springboot系列学习笔记全部文章请移步值博主专栏**： spring boot 2.X/spring cloud Greenwich。

由于是一系列文章，所以后面的文章可能会使用到前面文章的项目。springboot系列代码全部上传至GitHub：https://github.com/liubenlong/springboot2_demo

本系列环境：Java11；springboot 2.1.1.RELEASE；springcloud Greenwich.RELEASE；MySQL 8.0.5；

单元测试和日志比较简单，放到一起讲一下。本篇文章需要使用到Junit、TestNg、Mockito、Spring Testing，本文不会对其使用进行特别详细的说明，请自行检索

日志

springboot官方文档中指出，如果我们使用Starters，那么默认使用Logback作为日志输出组件。当然还支持Commons Logging, Log4J等组件。

简单日志配置（包含了指定文件目录， 格式，以及level）：

  1. logging:
  2.   level:
  3.     root: info
  4.     com.example.controller: info
  5.     com.example.service: warn
  6.   file: d://a.log
  7.   pattern:
  8.     console: "%d - %msg%n"

springboot中提供的日志的配置参数

  1. # ----------------------------------------
  2. # CORE PROPERTIES
  3. # ----------------------------------------
  4. debug=false # Enable debug logs.
  5. trace=false # Enable trace logs.
  6. LOGGING
  8. logging.config= # Location of the logging configuration file. For instance, classpath:logback.xml for Logback.

  9. logging.exception-conversion-word=%wEx # Conversion word used when logging exceptions.

  10. logging.file= # Log file name (for instance, myapp.log). Names can be an exact location or relative to the current directory.

  11. logging.file.max-history=0 # Maximum of archive log files to keep. Only supported with the default logback setup.

  12. logging.file.max-size=10MB # Maximum log file size. Only supported with the default logback setup.

  13. logging.group.= # Log groups to quickly change multiple loggers at the same time. For instance, logging.level.db=org.hibernate,org.springframework.jdbc.

  14. logging.level.= # Log levels severity mapping. For instance, logging.level.org.springframework=DEBUG.

  15. logging.path= # Location of the log file. For instance, /var/log.

  16. logging.pattern.console= # Appender pattern for output to the console. Supported only with the default Logback setup.

  17. logging.pattern.dateformat=yyyy-MM-dd HH:mm:ss.SSS # Appender pattern for log date format. Supported only with the default Logback setup.

  18. logging.pattern.file= # Appender pattern for output to a file. Supported only with the default Logback setup.

  19. logging.pattern.level=%5p # Appender pattern for log level. Supported only with the default Logback setup.

  20. logging.register-shutdown-hook=false # Register a shutdown hook for the logging system when it is initialized.

通常只需要在applicatiom.yml中配置即可，但是如果想要对日志进行更加复杂纤细的配置，可能就需要使用到对应日志系统的配置文件了。如果使用logbak,我们只需要在resource中添加logback.xml文件即可(当然下面只是简单实例，详细的logbak的xml配置请读者自行配置)：

  1. <?xml version="1.0" encoding="GBK"?>
  2. <configuration debug="false">
  3.     <appender name="CONSOLE"
  4.               class="ch.qos.logback.core.ConsoleAppender">
  5.         <encoder>
  6.             <charset>UTF-8</charset>
  7.             <pattern>
  8.                 %d %-4relative [%thread] %-5level %logger{36} [T:%X{trans}]  - %msg%n
  9.             </pattern>
  10.         </encoder>
  11.     </appender>
  12.     <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
  13.         <file>logs/demo.log</file>
  14.         <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
  15.             <fileNamePattern>logs/demo.log.%d{yyyy-MM-dd}.%i</fileNamePattern>
  16.             <maxHistory>10</maxHistory>
  17.             <maxFileSize>200MB</maxFileSize>
  18.             <totalSizeCap>10GB</totalSizeCap>
  19.         </rollingPolicy>
  20.         <encoder>
  21.             <pattern>[%d{yyyy-MM-dd HH:mm:ss}] [%thread] %level %logger{35} [T:%X{trans}] %msg%n</pattern>
  22.         </encoder>
  23.     </appender>
  24. <span class="token tag"><span class="token tag"><span class="token punctuation"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag">&lt;</span></span></span></span></span><span class="hljs-tag"><span class="hljs-name"><span class="hljs-tag"><span class="hljs-name"><span class="hljs-tag"><span class="hljs-name"><span class="hljs-tag"><span class="hljs-name">root</span></span></span></span></span></span></span></span></span><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag"> </span></span></span></span><span class="token attr-name"><span class="hljs-tag"><span class="hljs-attr"><span class="hljs-tag"><span class="hljs-attr"><span class="hljs-tag"><span class="hljs-attr"><span class="hljs-tag"><span class="hljs-attr">level</span></span></span></span></span></span></span></span></span><span class="token attr-value"><span class="token punctuation"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag">=</span></span></span></span></span><span class="token punctuation"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string">"</span></span></span></span></span></span></span></span></span><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string">INFO</span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string">"</span></span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag">&gt;</span></span></span></span></span></span>
  25.     <span class="token tag"><span class="token tag"><span class="token punctuation"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag">&lt;</span></span></span></span></span><span class="hljs-tag"><span class="hljs-name"><span class="hljs-tag"><span class="hljs-name"><span class="hljs-tag"><span class="hljs-name"><span class="hljs-tag"><span class="hljs-name">appender-ref</span></span></span></span></span></span></span></span></span><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag"> </span></span></span></span><span class="token attr-name"><span class="hljs-tag"><span class="hljs-attr"><span class="hljs-tag"><span class="hljs-attr"><span class="hljs-tag"><span class="hljs-attr"><span class="hljs-tag"><span class="hljs-attr">ref</span></span></span></span></span></span></span></span></span><span class="token attr-value"><span class="token punctuation"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag">=</span></span></span></span></span><span class="token punctuation"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string">"</span></span></span></span></span></span></span></span></span><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string">FILE</span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string">"</span></span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag">/&gt;</span></span></span></span></span></span>
  26.     <span class="token tag"><span class="token tag"><span class="token punctuation"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag">&lt;</span></span></span></span></span><span class="hljs-tag"><span class="hljs-name"><span class="hljs-tag"><span class="hljs-name"><span class="hljs-tag"><span class="hljs-name"><span class="hljs-tag"><span class="hljs-name">appender-ref</span></span></span></span></span></span></span></span></span><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag"> </span></span></span></span><span class="token attr-name"><span class="hljs-tag"><span class="hljs-attr"><span class="hljs-tag"><span class="hljs-attr"><span class="hljs-tag"><span class="hljs-attr"><span class="hljs-tag"><span class="hljs-attr">ref</span></span></span></span></span></span></span></span></span><span class="token attr-value"><span class="token punctuation"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag">=</span></span></span></span></span><span class="token punctuation"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string">"</span></span></span></span></span></span></span></span></span><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string">CONSOLE</span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string"><span class="hljs-tag"><span class="hljs-string">"</span></span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag">/&gt;</span></span></span></span></span></span>
  27. <span class="token tag"><span class="token tag"><span class="token punctuation"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag">&lt;/</span></span></span></span></span><span class="hljs-tag"><span class="hljs-name"><span class="hljs-tag"><span class="hljs-name"><span class="hljs-tag"><span class="hljs-name"><span class="hljs-tag"><span class="hljs-name">root</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag"><span class="hljs-tag">&gt;</span></span></span></span></span></span>
  29. </configuration>

@Slf4j

为了方便的使用日志，可以借助spring的@slf4j注解，可以自动注入log，代码中可以直接使用，比较方便：

  1. @RestController
  2. @Slf4j
  3. public class HelloController {
  4.     @Autowired
  5.     private Stu stu;
  6.     @Autowired
  7.     private Person person;
  8. <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@GetMapping</span></span></span></span></span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"/properties1"</span></span></span></span></span><span class="token punctuation">)</span>
  9. <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">public</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> String </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">properties1</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token punctuation">{</span>
  10.     log<span class="token punctuation">.</span><span class="token function">debug</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"com.example.controller.HelloController.properties1 执行"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  11.     log<span class="token punctuation">.</span><span class="token function">info</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"stu={}"</span></span></span></span></span><span class="token punctuation">,</span> stu<span class="token punctuation">)</span><span class="token punctuation">;</span>
  12.     log<span class="token punctuation">.</span><span class="token function">info</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"person={}"</span></span></span></span></span><span class="token punctuation">,</span> person<span class="token punctuation">)</span><span class="token punctuation">;</span>
  14.     <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">return</span></span></span></span></span> <span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"Welcome to springboot2 world ~"</span></span></span></span></span><span class="token punctuation">;</span>
  15. <span class="token punctuation">}</span>
  16. <span class="token comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment">//省略代码</span></span></span></span></span>

单元测试

一个Spring Boot application 是Spring ApplicationContext, 在单元测试时没有什么特殊的。

当你使用SpringApplication 时，外部属性，日志等其他功能会被默认装配

springboot提供了@SpringBootTest注解来辅助我们进行测试。

需要注意：如果我们使用的是JUnit 4 ，那么需要添加@RunWith(SpringRunner.class)否则所有注解将会被忽略。

如果你使用的是JUnit5 ,那么在 SpringBootTest 上没有必要添加 @ExtendWith,因为@…Test已经添加了ExtendWith

  1. If you are using JUnit 4, don’t forget to also add @RunWith(SpringRunner.class) to your test, otherwise the annotations will be
  2. ignored. If you are using JUnit 5, there’s no need to add the equivalent @ExtendWith(SpringExtension) as @SpringBootTest and the
  3. other @…Test annotations are already annotated with it.

简单实例

引入test的starter依赖

  1. <dependency>
  2.     <groupId>org.springframework.boot</groupId>
  3.     <artifactId>spring-boot-starter-test</artifactId>
  4.     <scope>test</scope>
  5. </dependency>

在src/test/java目录下创建MyTest.java：


  2. @RunWith(SpringRunner.class)
  3. @SpringBootTest(classes = {Application.class})// 指定启动类
  4. @Slf4j
  5. public class MyTests {
  6.     @Autowired
  7.     private Person person;
  8.     @Autowired
  9.     private HelloService helloService;
  10. <span class="token comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment">/**
  11.  * 使用断言
  12.  */</span></span></span></span></span>
  13. <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@Test</span></span></span></span></span>
  14. <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">public</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">void</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">test2</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token punctuation">{</span>
  15.     log<span class="token punctuation">.</span><span class="token function">info</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"test hello 2"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  16.     TestCase<span class="token punctuation">.</span><span class="token function">assertEquals</span><span class="token punctuation">(</span><span class="token number"><span class="hljs-number"><span class="hljs-number"><span class="hljs-number"><span class="hljs-number">1</span></span></span></span></span><span class="token punctuation">,</span> <span class="token number"><span class="hljs-number"><span class="hljs-number"><span class="hljs-number"><span class="hljs-number">1</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  17. <span class="token punctuation">}</span>
  19. <span class="token comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment">/**
  20.  * 测试注入
  21.  */</span></span></span></span></span>
  22. <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@Test</span></span></span></span></span>
  23. <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">public</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">void</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">test3</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token punctuation">{</span>
  24.     log<span class="token punctuation">.</span><span class="token function">info</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"person={}"</span></span></span></span></span><span class="token punctuation">,</span> person<span class="token punctuation">)</span><span class="token punctuation">;</span>
  25.     log<span class="token punctuation">.</span><span class="token function">info</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"helloService.getVal()={}"</span></span></span></span></span><span class="token punctuation">,</span> helloService<span class="token punctuation">.</span><span class="token function">getVal</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  26. <span class="token punctuation">}</span>
  28. <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@Before</span></span></span></span></span>
  29. <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">public</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">void</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">testBefore</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token punctuation">{</span>
  30.     System<span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"before"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  31. <span class="token punctuation">}</span>
  33. <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@After</span></span></span></span></span>
  34. <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">public</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">void</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">testAfter</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token punctuation">{</span>
  35.     System<span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"after"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  36. <span class="token punctuation">}</span>
  38. }

我们这里单独执行test3，他会向正常启动springboot服务一样，注入相关的bean，输出如下：

@TestConfiguration

@TestConfiguration是Spring Boot Test提供的一种工具，用它我们可以在一般的@Configuration之外补充测试专门用的Bean或者自定义的配置。

我们看@TestConfiguration的定义

  1. @Target(ElementType.TYPE)
  2. @Retention(RetentionPolicy.RUNTIME)
  3. @Documented
  4. @Configuration
  5. @TestComponent
  6. public @interface TestConfiguration {
  7. //省略

可见真正起作用的是@TestComponent:

  1. @Target(ElementType.TYPE)
  2. @Retention(RetentionPolicy.RUNTIME)
  3. @Documented
  4. @Component
  5. public @interface TestComponent {
  6. //省略

@TestComponent 用于声明专门用于测试的bean , 他不应该被自动扫描到。也就是说如果你使用@ComponentScan来扫描bean，那么需要将其排除在外：

  1. @ComponentScan(excludeFilters = {
  2.   @Filter(type = FilterType.CUSTOM, classes = TypeExcludeFilter.class),
  3.   ...})

由于@SpringBootApplication已经添加有排除TypeExcludeFilter的功能，固使用@SpringBootApplication时不会加载@TestComponent声明的bean:

  1. @Target(ElementType.TYPE)
  2. @Retention(RetentionPolicy.RUNTIME)
  3. @Documented
  4. @Inherited
  5. @SpringBootConfiguration
  6. @EnableAutoConfiguration
  7. @ComponentScan(excludeFilters = {
  8.         @Filter(type = FilterType.CUSTOM, classes = TypeExcludeFilter.class),
  9.         @Filter(type = FilterType.CUSTOM, classes = AutoConfigurationExcludeFilter.class) })
  10. public @interface SpringBootApplication {

@TestConfiguration 应用实例

编写一个bean的创建类：

  1. package config;
  3. import com.example.pojo.Foo;

  4. import org.springframework.boot.test.context.TestConfiguration;

  5. import org.springframework.context.annotation.Bean;
  7. @TestConfiguration

  8. public class Config {
  9. <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@Bean</span></span></span></span></span>
  10. <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">public</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> Foo </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">foo</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token punctuation">{</span>
  11.     <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">return</span></span></span></span></span> <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">new</span></span></span></span></span> <span class="token class-name">Foo</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"from config"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  12. <span class="token punctuation">}</span>
  14. }

Foo.java:

  1. @Data
  2. @AllArgsConstructor
  3. @NoArgsConstructor
  4. public class Foo {
  5.     private String name;
  6. }

编写测试类(IDEA 可能会在foo属性上标红提示错误，不用管，IDE还没有那么智能，识别不了这里的自动注入)：

  1. @RunWith(SpringRunner.class)
  2. @SpringBootTest(classes = {Application.class})// 指定启动类
  3. @Import(Config.class)
  4. @Slf4j
  5. public class TestConfiguration1 {
  6. <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@Autowired</span></span></span></span></span>
  7. <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">private</span></span></span></span></span> Foo foo<span class="token punctuation">;</span>
  9. <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@Test</span></span></span></span></span>
  10. <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">public</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">void</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">testPlusCount</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token punctuation">{</span>
  11.     log<span class="token punctuation">.</span><span class="token function">info</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"TestConfiguration1"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  12.     Assert<span class="token punctuation">.</span><span class="token function">assertEquals</span><span class="token punctuation">(</span>foo<span class="token punctuation">.</span><span class="token function">getName</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"from config"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  13. <span class="token punctuation">}</span>
  15. }

执行这里的testPlusCount方法，测试通过。

当然上面Config中的注解@TestConfiguration可以换成@Configuration效果也是一样的，@TestConfiguration是专门用于测试的。

使用mock方式对controller进行单元测试（无需运行web服务）

默认情况下，使用@SpringBootTest不会真正启动web服务，当我们测试controller时，spring测试提供了MockMvc供我们方便的测试controller，就像从浏览器发起请求一样。

在HelloController中有这么一个方法：

  1. @GetMapping("/hello")
  2. public String hello() {
  3.     return "Welcome to springboot2 world ~";
  4. }

启动服务在浏览器中访问：

关闭tomcat服务，我们看如何进行单元测试。

  1. import com.example.Application;
  2. import org.junit.Test;
  3. import org.junit.runner.RunWith;
  4. import org.springframework.beans.factory.annotation.Autowired;
  5. import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
  6. import org.springframework.boot.test.context.SpringBootTest;
  7. import org.springframework.test.context.junit4.SpringRunner;
  8. import org.springframework.test.web.servlet.MockMvc;
  10. import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;

  11. import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;

  12. import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
  14. @RunWith(SpringRunner.class)

  15. @SpringBootTest(classes = {Application.class})// 指定启动类

  16. @AutoConfigureMockMvc

  17. public class MockMvcExampleTests {

  18. @Autowired

  19. private MockMvc mvc;
  20. <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@Test</span></span></span></span></span>
  21. <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">public</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">void</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">exampleTest</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">throws</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> Exception </span></span></span></span><span class="token punctuation">{</span>
  22.     <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">this</span></span></span></span></span><span class="token punctuation">.</span>mvc<span class="token punctuation">.</span><span class="token function">perform</span><span class="token punctuation">(</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"/hello"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">andExpect</span><span class="token punctuation">(</span><span class="token function">status</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">isOk</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span>
  23.             <span class="token punctuation">.</span><span class="token function">andExpect</span><span class="token punctuation">(</span><span class="token function">content</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">string</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"Welcome to springboot2 world ~"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">)</span>
  24.             <span class="token punctuation">.</span><span class="token function">andDo</span><span class="token punctuation">(</span>MockMvcResultHandlers<span class="token punctuation">.</span><span class="token function">print</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  25. <span class="token punctuation">}</span>
  27. }

tomcat服务已经关闭，执行单元测试，输出结果：


  2. 2018-12-30 19:29:29.971  INFO 15100 --- [           main] MockMvcExampleTests                      : Starting MockMvcExampleTests on HIH-D-20265 with PID 15100 (started by hzliubenlong in D:\workspace-wy\springboot2demo)
  3. 2018-12-30 19:29:29.973  INFO 15100 --- [           main] MockMvcExampleTests                      : No active profile set, falling back to default profiles: default
  4. 2018-12-30 19:29:31.419  INFO 15100 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
  5. 2018-12-30 19:29:31.620  INFO 15100 --- [           main] o.s.b.t.m.w.SpringBootMockServletContext : Initializing Spring TestDispatcherServlet ''
  6. 2018-12-30 19:29:31.624  INFO 15100 --- [           main] o.s.t.web.servlet.TestDispatcherServlet  : Initializing Servlet ''
  7. 2018-12-30 19:29:31.633  INFO 15100 --- [           main] o.s.t.web.servlet.TestDispatcherServlet  : Completed initialization in 9 ms
  8. 2018-12-30 19:29:31.651  INFO 15100 --- [           main] MockMvcExampleTests                      : Started MockMvcExampleTests in 2.201 seconds (JVM running for 2.974)
  10. MockHttpServletRequest:

  11. HTTP Method = GET

  12. Request URI = /hello

  13. Parameters = {}

  14. Headers = {}

  15. Body = null

  16. Session Attrs = {}
  18. Handler:

  19. Type = com.example.controller.HelloController

  20. Method = public java.lang.String com.example.controller.HelloController.hello()
  22. Async:

  23. Async started = false

  24. Async result = null
  26. Resolved Exception:

  27. Type = null
  29. ModelAndView:

  30. View name = null

  31. View = null

  32. Model = null
  34. FlashMap:

  35. Attributes = null
  37. MockHttpServletResponse:

  38. Status = 200

  39. Error message = null

  40. Headers = {Content-Type=[text/plain;charset=UTF-8], Content-Length=[30]}

  41. Content type = text/plain;charset=UTF-8

  42. Body = Welcome to springboot2 world ~

  43. Forwarded URL = null

  44. Redirected URL = null

  45. Cookies = []

  46. 2018-12-30 19:29:31.916  INFO 15100 --- [       Thread-2] o.s.s.concurrent.ThreadPoolTaskExecutor  : Shutting down ExecutorService 'applicationTaskExecutor'

其中中间的内容为打印的请求详细信息，该测试通过。

使用mock方式对controller进行单元测试（无需运行web服务）

如果您需要启动运行web服务，我们建议您使用随机端口。 如果您使用的是@SpringBootTest（webEnvironment = WebEnvironment.RANDOM_PORT），则可以随机进行测试运行。

这里允许自动注入TestRestTemplate:

  1. import com.example.Application;
  2. import org.junit.Test;
  3. import org.junit.runner.RunWith;
  4. import org.springframework.beans.factory.annotation.Autowired;
  5. import org.springframework.boot.test.context.SpringBootTest;
  6. import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
  7. import org.springframework.boot.test.web.client.TestRestTemplate;
  8. import org.springframework.test.context.junit4.SpringRunner;
  10. import static org.assertj.core.api.Assertions.assertThat;
  12. /**
    • 测试基于普通springmvc的运行的controller服务

    • */

    • @RunWith(SpringRunner.class)

    • //使用随机端口

    • @SpringBootTest(classes = Application.class, webEnvironment = WebEnvironment.RANDOM_PORT)

    • public class RandomPortTestRestTemplateExampleTests {
    • @Autowired

    • private TestRestTemplate restTemplate;
    • @Test

    • public void exampleTest() {

    • String body = this.restTemplate.getForObject("/hello", String.class);

    • assertThat(body).isEqualTo("Welcome to springboot2 world ~");

    • }

    • }

首先启动该springboot应用，然后执行这个单元测试。

使用mock方式对controller进行单元测试（需运行web服务且 使用webflux）

具体的webflux相关的内容后续会讲。这里只需要知道这个springboot提供的是基于reactor的响应式编程（异步非阻塞）架构就行了。而我们之前使用的基于Tomcat的servlet3.1之前的springmvc是同步阻塞的。

要想使用webflux，需要更换spring-boot-starter-web为spring-boot-starter-webflux

  1. <dependency>
  2.     <groupId>org.springframework.boot</groupId>
  3.     <artifactId>spring-boot-starter-webflux</artifactId>
  4. </dependency>

编写测试代码

  1. import com.example.Application;
  2. import org.junit.Test;
  3. import org.junit.runner.RunWith;
  4. import org.springframework.beans.factory.annotation.Autowired;
  5. import org.springframework.boot.test.context.SpringBootTest;
  6. import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
  7. import org.springframework.test.context.junit4.SpringRunner;
  8. import org.springframework.test.web.reactive.server.WebTestClient;
  10. @RunWith(SpringRunner.class)

  11. //指定使用随机端口（官网推荐的，原因待验证）

  12. @SpringBootTest(classes = Application.class, webEnvironment = WebEnvironment.RANDOM_PORT)

  13. public class RandomPortWebTestClientExampleTests {

  14. /**

  15. *WebTestClient 是用于测试web服务器的非阻塞的响应式客户端

  16. */

  17. @Autowired

  18. private WebTestClient webClient;
  19. <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@Test</span></span></span></span></span>
  20. <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">public</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">void</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">exampleTest</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token punctuation">{</span>
  21.     <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">this</span></span></span></span></span><span class="token punctuation">.</span>webClient<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">uri</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"/hello"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">exchange</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">expectStatus</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">isOk</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
  22.             <span class="token punctuation">.</span><span class="token function">expectBody</span><span class="token punctuation">(</span>String<span class="token punctuation">.</span><span class="token keyword">class</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">isEqualTo</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"Welcome to springboot2 world ~"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  23. <span class="token punctuation">}</span>
  25. }

首先启动该springboot应用，然后执行这个单元测试。

改为webflux的starter以后，观察启动日志，可以发现不再是基于Tomcat，而是基于netty了Netty started on port(s): 8080

@MockBean 对bean进行mock测试

在实际项目中，有一些bean可能会调用第三方，依赖外部组件或项目。但是我们单元测试不需要真正调用。那么我们可以使用@MockBean进行mock结果。

假设HelloService中有调用外部服务的方法：

  1. public interface HelloService {
  2. <span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function">String </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">getVal</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="token punctuation">;</span>
  4. <span class="token comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment">//模拟远程调用，或者其他服务调用</span></span></span></span></span>
  5. <span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function">String </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">getRemoteVal</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="token punctuation">;</span>
  7. }
  8. @Component

  9. @Slf4j

  10. public class HelloServiceImpl implements HelloService{
  11. <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">public</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> String </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">getVal</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="token punctuation">{</span>
  12.     <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">return</span></span></span></span></span> <span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"haha"</span></span></span></span></span><span class="token punctuation">;</span>
  13. <span class="token punctuation">}</span>
  15. <span class="token comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment">//模拟远程调用，或者其他服务调用</span></span></span></span></span>
  16. <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">public</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> String </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">getRemoteVal</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="token punctuation">{</span>
  17.     log<span class="token punctuation">.</span><span class="token function">info</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"真正发起外部请求"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  18.     <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">return</span></span></span></span></span> <span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"remote Val"</span></span></span></span></span><span class="token punctuation">;</span>
  19. <span class="token punctuation">}</span>
  21. }

编写单元测试代码：

  1. import com.example.Application;
  2. import com.example.service.HelloService;
  3. import org.junit.Test;
  4. import org.junit.runner.RunWith;
  5. import org.springframework.boot.test.context.SpringBootTest;
  6. import org.springframework.boot.test.mock.mockito.MockBean;
  7. import org.springframework.test.context.junit4.SpringRunner;
  9. import static org.assertj.core.api.Assertions.assertThat;

  10. import static org.mockito.BDDMockito.given;
  12. /**
    • 测试bean结果的mock

    • */

    • @RunWith(SpringRunner.class)

    • @SpringBootTest(classes = {Application.class})// 指定启动类

    • public class MockBeanTest {

    • @MockBean  //这里使用 @SpyBean 是同样效果

    • private HelloService helloService;

    • @Test

    • public void exampleTest() {

    • //这句的意思是当调用helloService的getRemoteVal方法时，返回mock的结果："远程调用结果"

    • given(this.helloService.getRemoteVal()).willReturn("远程调用结果");
    •  <span class="token comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment">//进行调用测试</span></span></span></span></span>
    •  String reverse <span class="token operator">=</span> helloService<span class="token punctuation">.</span><span class="token function">getRemoteVal</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    •  <span class="token function">assertThat</span><span class="token punctuation">(</span>reverse<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">isEqualTo</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"远程调用结果"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    • }

    • }

执行单元测试，可以发现并没有真正发起请求。

更多测试相关内容请参见官网 Testing

测试json @JsonTest

  1. import static org.assertj.core.api.Assertions.assertThat;
  3. @RunWith(SpringRunner.class)

  4. //这里不能使用@SpringBootTest否则报错：Configuration error: found multiple declarations of @BootstrapWith for test class [MyJsonTests]

  5. @ContextConfiguration(classes = {Application.class})

  6. @JsonTest

  7. public class MyJsonTests extends AbstractTestNGSpringContextTests {
  8. <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@Autowired</span></span></span></span></span>
  9. <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">private</span></span></span></span></span> JacksonTester<span class="token generics function"><span class="token punctuation">&lt;</span>Stu<span class="token punctuation">&gt;</span></span> json<span class="token punctuation">;</span>
  11. <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@Test</span></span></span></span></span>
  12. <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">public</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">void</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">testSerialize</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">throws</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> Exception </span></span></span></span><span class="token punctuation">{</span>
  13.     Stu details <span class="token operator">=</span> <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">new</span></span></span></span></span> <span class="token class-name">Stu</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"马云"</span></span></span></span></span><span class="token punctuation">,</span> <span class="token number"><span class="hljs-number"><span class="hljs-number"><span class="hljs-number"><span class="hljs-number">51</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  14.     <span class="token comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment">// Assert against a `.json` file in the same package as the test</span></span></span></span></span>
  15.     <span class="token function">assertThat</span><span class="token punctuation">(</span><span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">this</span></span></span></span></span><span class="token punctuation">.</span>json<span class="token punctuation">.</span><span class="token function">write</span><span class="token punctuation">(</span>details<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">isEqualToJson</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"expected.json"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  16.     <span class="token comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment">// 或者使用基于JSON path的校验</span></span></span></span></span>
  17.     <span class="token function">assertThat</span><span class="token punctuation">(</span><span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">this</span></span></span></span></span><span class="token punctuation">.</span>json<span class="token punctuation">.</span><span class="token function">write</span><span class="token punctuation">(</span>details<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">hasJsonPathStringValue</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"@.name"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  18.     <span class="token function">assertThat</span><span class="token punctuation">(</span><span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">this</span></span></span></span></span><span class="token punctuation">.</span>json<span class="token punctuation">.</span><span class="token function">write</span><span class="token punctuation">(</span>details<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">extractingJsonPathStringValue</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"@.name"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">isEqualTo</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"马云"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  19. <span class="token punctuation">}</span>
  21. <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@Test</span></span></span></span></span>
  22. <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">public</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">void</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">testDeserialize</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">throws</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> Exception </span></span></span></span><span class="token punctuation">{</span>
  23.     String content <span class="token operator">=</span> <span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"{\"name\":\"2\",\"age\":\"11\"}"</span></span></span></span></span><span class="token punctuation">;</span>
  24.     <span class="token function">assertThat</span><span class="token punctuation">(</span><span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">this</span></span></span></span></span><span class="token punctuation">.</span>json<span class="token punctuation">.</span><span class="token function">parse</span><span class="token punctuation">(</span>content<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">isEqualTo</span><span class="token punctuation">(</span><span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">new</span></span></span></span></span> <span class="token class-name">Stu</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"2"</span></span></span></span></span><span class="token punctuation">,</span> <span class="token number"><span class="hljs-number"><span class="hljs-number"><span class="hljs-number"><span class="hljs-number">11</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  25.     <span class="token function">assertThat</span><span class="token punctuation">(</span><span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">this</span></span></span></span></span><span class="token punctuation">.</span>json<span class="token punctuation">.</span><span class="token function">parseObject</span><span class="token punctuation">(</span>content<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getName</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">isEqualTo</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"2"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  26. <span class="token punctuation">}</span>
  28. }

这里不能使用@SpringBootTest否则报错：Configuration error: found multiple declarations of @BootstrapWith for test class [MyJsonTests]

有时候我们会自定义序列化风格，这里对@JsonComponent进行测试：

  1. @JsonComponent
  2. public class FooJsonComponent {
  3. <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">public</span></span></span></span></span> <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">static</span></span></span></span></span> <span class="token keyword"><span class="hljs-class"><span class="hljs-keyword"><span class="hljs-class"><span class="hljs-keyword"><span class="hljs-class"><span class="hljs-keyword"><span class="hljs-class"><span class="hljs-keyword">class</span></span></span></span></span></span></span></span></span><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"> </span></span></span></span><span class="token class-name"><span class="hljs-class"><span class="hljs-title"><span class="hljs-class"><span class="hljs-title"><span class="hljs-class"><span class="hljs-title"><span class="hljs-class"><span class="hljs-title">Serializer</span></span></span></span></span></span></span></span></span><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"> </span></span></span></span><span class="token keyword"><span class="hljs-class"><span class="hljs-keyword"><span class="hljs-class"><span class="hljs-keyword"><span class="hljs-class"><span class="hljs-keyword"><span class="hljs-class"><span class="hljs-keyword">extends</span></span></span></span></span></span></span></span></span><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"> </span></span></span></span><span class="token class-name"><span class="hljs-class"><span class="hljs-title"><span class="hljs-class"><span class="hljs-title"><span class="hljs-class"><span class="hljs-title"><span class="hljs-class"><span class="hljs-title">JsonSerializer</span></span></span></span></span></span></span></span></span><span class="token generics function"><span class="token punctuation"><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"><span class="hljs-class">&lt;</span></span></span></span></span><span class="hljs-class"><span class="hljs-title"><span class="hljs-class"><span class="hljs-title"><span class="hljs-class"><span class="hljs-title"><span class="hljs-class"><span class="hljs-title">Stu</span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"><span class="hljs-class">&gt;</span></span></span></span></span></span><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"> </span></span></span></span><span class="token punctuation">{</span>
  4.     <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@Override</span></span></span></span></span>
  5.     <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">public</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">void</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">serialize</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">Stu value</span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">,</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"> JsonGenerator gen</span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">,</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"> SerializerProvider serializers</span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function">
  6.             </span></span></span></span><span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">throws</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> IOException</span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function">,</span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> JsonProcessingException </span></span></span></span><span class="token punctuation">{</span>
  7.         gen<span class="token punctuation">.</span><span class="token function">writeString</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"name="</span></span></span></span></span> <span class="token operator">+</span> value<span class="token punctuation">.</span><span class="token function">getName</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">",age="</span></span></span></span></span> <span class="token operator">+</span> value<span class="token punctuation">.</span><span class="token function">getAge</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  8.     <span class="token punctuation">}</span>
  10. <span class="token punctuation">}</span>
  12. <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">public</span></span></span></span></span> <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">static</span></span></span></span></span> <span class="token keyword"><span class="hljs-class"><span class="hljs-keyword"><span class="hljs-class"><span class="hljs-keyword"><span class="hljs-class"><span class="hljs-keyword"><span class="hljs-class"><span class="hljs-keyword">class</span></span></span></span></span></span></span></span></span><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"> </span></span></span></span><span class="token class-name"><span class="hljs-class"><span class="hljs-title"><span class="hljs-class"><span class="hljs-title"><span class="hljs-class"><span class="hljs-title"><span class="hljs-class"><span class="hljs-title">Deserializer</span></span></span></span></span></span></span></span></span><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"> </span></span></span></span><span class="token keyword"><span class="hljs-class"><span class="hljs-keyword"><span class="hljs-class"><span class="hljs-keyword"><span class="hljs-class"><span class="hljs-keyword"><span class="hljs-class"><span class="hljs-keyword">extends</span></span></span></span></span></span></span></span></span><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"> </span></span></span></span><span class="token class-name"><span class="hljs-class"><span class="hljs-title"><span class="hljs-class"><span class="hljs-title"><span class="hljs-class"><span class="hljs-title"><span class="hljs-class"><span class="hljs-title">JsonDeserializer</span></span></span></span></span></span></span></span></span><span class="token generics function"><span class="token punctuation"><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"><span class="hljs-class">&lt;</span></span></span></span></span><span class="hljs-class"><span class="hljs-title"><span class="hljs-class"><span class="hljs-title"><span class="hljs-class"><span class="hljs-title"><span class="hljs-class"><span class="hljs-title">Stu</span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"><span class="hljs-class">&gt;</span></span></span></span></span></span><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"><span class="hljs-class"> </span></span></span></span><span class="token punctuation">{</span>
  14.     <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@Override</span></span></span></span></span>
  15.     <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">public</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> Stu </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">deserialize</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">JsonParser p</span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">,</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"> DeserializationContext ctxt</span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">throws</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> IOException</span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function">,</span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> JsonProcessingException </span></span></span></span><span class="token punctuation">{</span>
  16.         JsonToken t <span class="token operator">=</span> p<span class="token punctuation">.</span><span class="token function">getCurrentToken</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  18.         <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">if</span></span></span></span></span> <span class="token punctuation">(</span>t <span class="token operator">==</span> JsonToken<span class="token punctuation">.</span>VALUE_STRING<span class="token punctuation">)</span> <span class="token punctuation">{</span>
  19.             String trim <span class="token operator">=</span> p<span class="token punctuation">.</span><span class="token function">getText</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">trim</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  21.             String<span class="token punctuation">[</span><span class="token punctuation">]</span> split <span class="token operator">=</span> trim<span class="token punctuation">.</span><span class="token function">split</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">","</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  22.             Stu stu <span class="token operator">=</span> <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">new</span></span></span></span></span> <span class="token class-name">Stu</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  23.             stu<span class="token punctuation">.</span><span class="token function">setName</span><span class="token punctuation">(</span>split<span class="token punctuation">[</span><span class="token number"><span class="hljs-number"><span class="hljs-number"><span class="hljs-number"><span class="hljs-number">0</span></span></span></span></span><span class="token punctuation">]</span><span class="token punctuation">.</span><span class="token function">split</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"="</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">[</span><span class="token number"><span class="hljs-number"><span class="hljs-number"><span class="hljs-number"><span class="hljs-number">1</span></span></span></span></span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  24.             stu<span class="token punctuation">.</span><span class="token function">setAge</span><span class="token punctuation">(</span>Integer<span class="token punctuation">.</span><span class="token function">parseInt</span><span class="token punctuation">(</span>split<span class="token punctuation">[</span><span class="token number"><span class="hljs-number"><span class="hljs-number"><span class="hljs-number"><span class="hljs-number">1</span></span></span></span></span><span class="token punctuation">]</span><span class="token punctuation">.</span><span class="token function">split</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"="</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">[</span><span class="token number"><span class="hljs-number"><span class="hljs-number"><span class="hljs-number"><span class="hljs-number">1</span></span></span></span></span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  25.             <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">return</span></span></span></span></span> stu<span class="token punctuation">;</span>
  26.         <span class="token punctuation">}</span>
  28.         <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">return</span></span></span></span></span> <span class="token punctuation">(</span>Stu<span class="token punctuation">)</span> ctxt<span class="token punctuation">.</span><span class="token function">handleUnexpectedToken</span><span class="token punctuation">(</span><span class="token function">handledType</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> p<span class="token punctuation">)</span><span class="token punctuation">;</span>
  30.     <span class="token punctuation">}</span>
  31. <span class="token punctuation">}</span>
  33. }
  34. /**
    • 测试自定义的@JsonComponent

    • */

    • @ContextConfiguration(classes = {JsonComponentJacksonTest.class, FooJsonComponent.class})

    • @JsonTest

    • public class JsonComponentJacksonTest extends AbstractTestNGSpringContextTests {
    • @Autowired

    • private JacksonTester<Stu> json;
    • @Test

    • public void testSerialize() throws Exception {

    • Stu details = new Stu("zhangsan", 12);

    • assertThat(this.json.write(details).getJson()).isEqualTo(""name=zhangsan,age=12"");

    • }
    • @Test

    • public void testDeserialize() throws Exception {

    • String content = ""name=zhangsan,age=13"";

    • Stu actual = this.json.parseObject(content);

    • assertThat(actual).isEqualTo(new Stu("zhangsan", 13));

    • assertThat(actual.getName()).isEqualTo("zhangsan");

    • assertThat(actual.getAge()).isEqualTo(13);

    • }

    • }

@TestPropertySource 对属性配置进行mock

使用springboot我们通常会将配置设置在application.yml中，但是在测试的时候，可能会对某些配置的值进行修改，接下来我们使用@TestPropertySource来实现这个功能。

使用spring提供的@PropertySource

springboot提供的@ConfigurationProperties可以加载application.yml中的配置，如果你的配置放到其他目录或者叫其他名称，可以使用@PropertySource来进行加载。

我们在resources目录下创建两个配置文件：



property-source.properties文件内容是lastName=wanganshi。property-source.yml内容是lastName: libai。@PropertySource可以支持properties和yml两种格式。

编写类PropertySourceConfig.java来加载配置文件中的内容

  1. import org.springframework.context.annotation.Configuration;
  2. import org.springframework.context.annotation.PropertySource;
  4. @Configuration

  5. //支持properties和yml

  6. //@PropertySource("classpath:property-source.properties")

  7. @PropertySource("classpath:property-source.yml")

  8. public class PropertySourceConfig {

  9. }

编写测试类：

  1. import lombok.extern.slf4j.Slf4j;
  2. import org.junit.Assert;
  3. import org.junit.Test;
  4. import org.junit.runner.RunWith;
  5. import org.springframework.boot.test.context.SpringBootTest;
  6. import org.springframework.context.EnvironmentAware;
  7. import org.springframework.core.env.ConfigurableEnvironment;
  8. import org.springframework.core.env.Environment;
  9. import org.springframework.test.context.ContextConfiguration;
  10. import org.springframework.test.context.TestPropertySource;
  11. import org.springframework.test.context.junit4.SpringRunner;
  13. import java.util.Map;
  15. import static java.util.stream.Collectors.toList;
  17. @RunWith(SpringRunner.class)

  18. @SpringBootTest

  19. @Slf4j

  20. @ContextConfiguration(classes = PropertySourceConfig.class) //加载属性配置

  21. @TestPropertySource( // 对属性进行设置

  22. properties = {"lastName=abc", "bar=uvw"}

  23. )

  24. public class PropertySourceTest1 implements EnvironmentAware {
  25. <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">private</span></span></span></span></span> Environment environment<span class="token punctuation">;</span>
  27. <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@Test</span></span></span></span></span>
  28. <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">public</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">void</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">test1</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token punctuation">{</span>
  29.     Assert<span class="token punctuation">.</span><span class="token function">assertEquals</span><span class="token punctuation">(</span>environment<span class="token punctuation">.</span><span class="token function">getProperty</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"lastName"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"abc"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  30. <span class="token punctuation">}</span>
  32. <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@Override</span></span></span></span></span>
  33. <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">public</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">void</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">setEnvironment</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">Environment environment</span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token punctuation">{</span>
  34.     <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">this</span></span></span></span></span><span class="token punctuation">.</span>environment <span class="token operator">=</span> environment<span class="token punctuation">;</span>
  35.     Map<span class="token generics function"><span class="token punctuation">&lt;</span>String<span class="token punctuation">,</span> Object<span class="token punctuation">&gt;</span></span> systemEnvironment <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token punctuation">(</span>ConfigurableEnvironment<span class="token punctuation">)</span> environment<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getSystemEnvironment</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  36.     System<span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"=== System Environment ==="</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  37.     System<span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token function">getMapString</span><span class="token punctuation">(</span>systemEnvironment<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  38.     System<span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  40.     System<span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"=== Java System Properties ==="</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  41.     Map<span class="token generics function"><span class="token punctuation">&lt;</span>String<span class="token punctuation">,</span> Object<span class="token punctuation">&gt;</span></span> systemProperties <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token punctuation">(</span>ConfigurableEnvironment<span class="token punctuation">)</span> environment<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getSystemProperties</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  42.     System<span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token function">getMapString</span><span class="token punctuation">(</span>systemProperties<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  43. <span class="token punctuation">}</span>
  45. <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">private</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> String </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">getMapString</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">Map</span></span></span></span></span></span></span></span><span class="token generics function"><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">&lt;</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">String</span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">,</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"> Object</span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">&gt;</span></span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"> map</span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token punctuation">{</span>
  46.     <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">return</span></span></span></span></span> String<span class="token punctuation">.</span><span class="token function">join</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"\n"</span></span></span></span></span><span class="token punctuation">,</span>
  47.             map<span class="token punctuation">.</span><span class="token function">keySet</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">stream</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">map</span><span class="token punctuation">(</span>k <span class="token operator">-</span><span class="token operator">&gt;</span> k <span class="token operator">+</span> <span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"="</span></span></span></span></span> <span class="token operator">+</span> map<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span>k<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">collect</span><span class="token punctuation">(</span><span class="token function">toList</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span>
  48.     <span class="token punctuation">)</span><span class="token punctuation">;</span>
  49. <span class="token punctuation">}</span>
  51. }

测试通过。大家可以将@TestPropertySource注解去掉来观察输出结果。

对springboot提供的类型安全的属性配置进行mock

前面已经讲过如何进行类型安全的属性配置。这种情况依然可以使用@TestPropertySource对属性进行mock:

我们使用spring boot 2.1学习笔记【四】属性配置的Person类进行测试。

直接编写测试类：

  1. import com.example.Application;
  2. import com.example.pojo.Person;
  3. import lombok.extern.slf4j.Slf4j;
  4. import org.junit.Assert;
  5. import org.junit.Test;
  6. import org.junit.runner.RunWith;
  7. import org.springframework.beans.factory.annotation.Autowired;
  8. import org.springframework.boot.test.context.SpringBootTest;
  9. import org.springframework.test.context.TestPropertySource;
  10. import org.springframework.test.context.junit4.SpringRunner;
  12. @RunWith(SpringRunner.class)

  13. @SpringBootTest(classes = {Application.class})// 指定启动类

  14. @Slf4j

  15. @TestPropertySource(

  16. properties = {"person.lastName=张飞", "person.age=49"}

  17. )

  18. public class PropertySourceTest {

  19. @Autowired

  20. private Person person;
  21. <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@Test</span></span></span></span></span>
  22. <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">public</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">void</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">test1</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token punctuation">{</span>
  23.     log<span class="token punctuation">.</span><span class="token function">info</span><span class="token punctuation">(</span>person<span class="token punctuation">.</span><span class="token function">getLastName</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  24.     Assert<span class="token punctuation">.</span><span class="token function">assertEquals</span><span class="token punctuation">(</span>person<span class="token punctuation">.</span><span class="token function">getLastName</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"张飞"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  25. <span class="token punctuation">}</span>
  27. }

测试结果通过，大家可以将@TestPropertySource注解去电观察运行结果。

为单元测试单独提供测试配置

就像上图中那样，我们在src/test/resources目录下创建一个单元测试专用的属性配置文件。就可以在@TestPropertySource指定加载这个配置即可。

test-property-source.yml文件内容：

  1. testp: 123456789
  2. person:
  3.   lastName: abc

对PropertySourceTest1进行改造：

  1. @RunWith(SpringRunner.class)
  2. @SpringBootTest
  3. @Slf4j
  4. @ContextConfiguration(classes = PropertySourceConfig.class) //加载属性配置
  5. @TestPropertySource( // 对属性进行设置
  6.         properties = {"bar=uvw"},
  7.         locations = "classpath:test-property-source.yml"
  8. )
  9. public class PropertySourceTest1 implements EnvironmentAware {
  10. <span class="token keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword"><span class="hljs-keyword">private</span></span></span></span></span> Environment environment<span class="token punctuation">;</span>
  12. <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@Value</span></span></span></span></span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"${testp}"</span></span></span></span></span><span class="token punctuation">)</span>
  13. String testp<span class="token punctuation">;</span>
  15. <span class="token annotation punctuation"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta"><span class="hljs-meta">@Test</span></span></span></span></span>
  16. <span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">public</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword"><span class="hljs-function"><span class="hljs-keyword">void</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token function"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title"><span class="hljs-function"><span class="hljs-title">test1</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">(</span></span></span></span></span></span></span></span></span><span class="token punctuation"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params"><span class="hljs-function"><span class="hljs-params">)</span></span></span></span></span></span></span></span></span><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"><span class="hljs-function"> </span></span></span></span><span class="token punctuation">{</span>
  17.     Assert<span class="token punctuation">.</span><span class="token function">assertEquals</span><span class="token punctuation">(</span>environment<span class="token punctuation">.</span><span class="token function">getProperty</span><span class="token punctuation">(</span><span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"lastName"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"abc"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  18.     Assert<span class="token punctuation">.</span><span class="token function">assertEquals</span><span class="token punctuation">(</span>testp<span class="token punctuation">,</span> <span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"123456789"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  19. <span class="token punctuation">}</span>
  20. <span class="token comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment">//省略部分代码</span></span></span></span></span>
  22. }

对AOP进行测试

我们这里对HelloService使用AspectJ进行AOP代理：

  1. /**
  2.  * AOP
  3.  */
  4. @Component
  5. @Aspect
  6. public class HelloAspect {
  7.   @Pointcut("execution(* com.example.service.HelloService.getVal())")
  8.   public void pointcut() {
  9.   }
  10.   @Around("pointcut()")
  11.   public String changeGetVal(ProceedingJoinPoint pjp) {
  12.     return "aopResult";//简单起见，这里直接模拟一个返回值了
  13.   }
  14. }

使用springboot进行配置，启用AOP

  1. @Configuration
  2. @EnableAspectJAutoProxy(proxyTargetClass = true)//启用aop
  3. @ComponentScan("com.example.service")
  4. public class AopConfig {
  5. }

我们队MockMvcExampleTests添加一个测试方法，验证一下结果：

  1. @Test
  2. public void exampleTest1() throws Exception {
  3.    this.mvc.perform(get("/hello1")).andExpect(status().isOk())
  4.            .andExpect(content().string("aopResult"))
  5.            .andDo(MockMvcResultHandlers.print());
  6. }

测试通过，说明代理成功。接下来我们通过另一种方式直接对AOP进行测试，注释已经在代码中写清楚了：

  1. //省略部分import
  2. import static org.mockito.Matchers.any;
  3. import static org.mockito.Mockito.times;
  4. import static org.mockito.Mockito.verify;
  5. import static org.testng.Assert.*;
  7. /**
    • AOP测试

    • */

    • @RunWith(SpringRunner.class)

    • @SpringBootTest(classes = {Application.class})// 指定启动类

    • @TestExecutionListeners(listeners = MockitoTestExecutionListener.class)//开启Mockito的支持

    • @Slf4j

    • public class SpringBootAopTest extends AbstractTestNGSpringContextTests {
    • @SpyBean

    • private HelloAspect helloAspect;
    • @Autowired

    • private HelloService helloService;
    • @Test

    • public void testFooService() {

    • //判断helloService对象是不是HelloServiceImpl

    • assertNotEquals(helloService.getClass(), HelloServiceImpl.class);
    •  <span class="token comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment">//接下来通过AopUtils、AopProxyUtils、AopTestUtils来判断helloService是否是代理的对象</span></span></span></span></span>
    •  <span class="token function">assertTrue</span><span class="token punctuation">(</span>AopUtils<span class="token punctuation">.</span><span class="token function">isAopProxy</span><span class="token punctuation">(</span>helloService<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    •  <span class="token function">assertTrue</span><span class="token punctuation">(</span>AopUtils<span class="token punctuation">.</span><span class="token function">isCglibProxy</span><span class="token punctuation">(</span>helloService<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    •  <span class="token function">assertEquals</span><span class="token punctuation">(</span>AopProxyUtils<span class="token punctuation">.</span><span class="token function">ultimateTargetClass</span><span class="token punctuation">(</span>helloService<span class="token punctuation">)</span><span class="token punctuation">,</span> HelloServiceImpl<span class="token punctuation">.</span><span class="token keyword">class</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    •  <span class="token function">assertEquals</span><span class="token punctuation">(</span>AopTestUtils<span class="token punctuation">.</span><span class="token function">getTargetObject</span><span class="token punctuation">(</span>helloService<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getClass</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> HelloServiceImpl<span class="token punctuation">.</span><span class="token keyword">class</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    •  <span class="token function">assertEquals</span><span class="token punctuation">(</span>AopTestUtils<span class="token punctuation">.</span><span class="token function">getUltimateTargetObject</span><span class="token punctuation">(</span>helloService<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getClass</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> HelloServiceImpl<span class="token punctuation">.</span><span class="token keyword">class</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    •  <span class="token comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment">/**
    •   * 但是证明HelloServiceImpl Bean被代理并不意味着HelloAspect生效了（假设此时有多个</span></span></span><span class="hljs-doctag"><span class="hljs-comment"><span class="hljs-doctag"><span class="hljs-comment"><span class="hljs-doctag"><span class="hljs-comment"><span class="hljs-doctag">@Aspect</span></span></span></span></span></span></span><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment">），
    •   * 那么我们还需要验证HelloServiceImpl.getVal的行为。
    •   * 这里调用两次:
    •   */</span></span></span></span></span>
    •  <span class="token function">assertEquals</span><span class="token punctuation">(</span>helloService<span class="token punctuation">.</span><span class="token function">getVal</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"aopResult"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    •  <span class="token function">assertEquals</span><span class="token punctuation">(</span>helloService<span class="token punctuation">.</span><span class="token function">getVal</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string"><span class="hljs-string">"aopResult"</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    •  <span class="token comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment">//通过MockitoTestExecutionListener来监听是否是调用了两次helloService.getVal()方法</span></span></span></span></span>
    •  <span class="token comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment"><span class="hljs-comment">//注意这一行代码测试的是helloAspect的行为，而不是helloService的行为</span></span></span></span></span>
    •  <span class="token function">verify</span><span class="token punctuation">(</span>helloAspect<span class="token punctuation">,</span> <span class="token function">times</span><span class="token punctuation">(</span><span class="token number"><span class="hljs-number"><span class="hljs-number"><span class="hljs-number"><span class="hljs-number">2</span></span></span></span></span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">changeGetVal</span><span class="token punctuation">(</span><span class="token function">any</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    • }

    • }

测试结果是通过。

springboot系列学习笔记全部文章请移步值博主专栏**： spring boot 2.X/spring cloud Greenwich。

由于是一系列文章，所以后面的文章可能会使用到前面文章的项目。springboot系列代码全部上传至GitHub：https://github.com/liubenlong/springboot2_demo

本系列环境：Java11；springboot 2.1.1.RELEASE；springcloud Greenwich.RELEASE；MySQL 8.0.5；

参考资料

官方文档

spring-test-examples

springboot(16)Spring Boot使用单元测试

  1.                     原文地址:https://blog.csdn.net/liubenlong007/article/details/85398181            </div>

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