mockito学习
mockito学习
写一个测试用例,如果在测试类上面添加了注解@RunWith(SpringJUnit4ClassRunner.class),必须添加@ContextConfiguration("/meta/springConfigured.xml")
否则执行测试用例会报错:Caused by: java.lang.IllegalArgumentException: Cannot load an ApplicationContext with a NULL 'contextLoader'. Consider annotating your test class with @ContextConfiguration or @ContextHierarchy.
package mockitotest; import java.util.Arrays;
import java.util.List; import org.junit.Test;
import org.mockito.ArgumentMatcher; import static org.mockito.Mockito.*;
import static org.mockito.Matchers.*; public class ArgumentMatchersTest { @SuppressWarnings("unchecked")
@Test
public void test() {
List mock = mock(List.class);
when(mock.addAll(argThat(new IsListOfTwoElements()))).thenReturn(true);
mock.addAll(Arrays.asList("one", "two"));
verify(mock).addAll(argThat(new IsListOfTwoElements()));
}
} class IsListOfTwoElements extends ArgumentMatcher<List<String>> {
@SuppressWarnings("unchecked")
public boolean matches(Object list) {
return ((List<String>) list).size() == 2;
}
}
package mockitotest; import java.util.List; import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import static org.mockito.Mockito.*;
import org.mockito.runners.MockitoJUnitRunner; @RunWith(MockitoJUnitRunner.class)
public class MockitoJUnitRunnerAndMockitoAnnotationsTest { @Mock
private List list; @Test
public void shouldDoSomething() {
list.add(100);
verify(list).add(200);
}
}
/**
*
*/
package mockitotest; /**
* @author Administrator
*
*/
import static org.mockito.Mockito.*; import java.util.LinkedList;
import java.util.List; import org.hamcrest.Matcher;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.ArgumentMatcher;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; //@RunWith(SpringJUnit4ClassRunner.class)
public class MockitoTest { @Test
public void testMockito_01() {
// TODO Auto-generated method stub
List<String> mockedList = mock(List.class);
mockedList.add("one");
mockedList.clear();
verify(mockedList).add("one");
verify(mockedList).size(); } @Test
public void testMockito_02() {
//You can mock concrete classes, not only interfaces
LinkedList mockedList = mock(LinkedList.class);
//stubbing
when(mockedList.get(0)).thenReturn("first");
when(mockedList.get(1)).thenThrow(new RuntimeException());
//following prints "first"
System.out.println(mockedList.get(0));
//following throws runtime exception
System.out.println(mockedList.get(1));
//following prints "null" because get(999) was not stubbed
System.out.println(mockedList.get(999));
//Although it is possible to verify a stubbed invocation, usually it's just redundant
//If your code cares what get(0) returns then something else breaks (often before even verify() gets executed).
//If your code doesn't care what get(0) returns then it should not be stubbed. Not convinced? See here.
verify(mockedList).get(0);
} @Test
public void testMockito_03() {
//You can mock concrete classes, not only interfaces
LinkedList mockedList = mock(LinkedList.class);
//stubbing using built-in anyInt() argument matcher
when(mockedList.get(anyInt())).thenReturn("element");
//stubbing using hamcrest (let's say isValid() returns your own hamcrest matcher):
when(mockedList.contains(argThat(isValid()))).thenReturn(true);
mockedList.contains(5);
verify(mockedList).contains(argThat(isValid()));
//following prints "element"
System.out.println(mockedList.get(999));
//you can also verify using an argument matcher
verify(mockedList).get(anyInt());
} private Matcher isValid(){
class IsNumber extends ArgumentMatcher<Integer> {
public boolean matches(Object number) {
return ((Integer) number)>10;
}
}
return new IsNumber();
} }
pom.xml文件添加如下依赖
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>1.10.8</version>
<scope>test</scope>
</dependency>
如何在spring容器无法找到接口对应的实现类,有一种情况是接口的注解没有加,可以在xml配置文件中添加bean定义,比如
<bean id="productService" class="sardine.commodity.solr.service.impl.ProductServiceImpl"/>
@Mock注解的作用和
<bean id="sendMessage" class="org.mockito.Mockito" factory-method="mock">
<constructor-arg value="com.som.SendMessage"></constructor-arg>
</bean>
作用是一样的。
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