本文基于SpringBoot

在pom.xml添加Spock依赖

        <!-- test -->
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-all</artifactId>
<version>2.4.</version>
</dependency> <dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency> <dependency>
<groupId>org.spockframework</groupId>
<artifactId>spock-core</artifactId>
<version>1.1-groovy-2.4</version>
<scope>test</scope>
</dependency>

新建Sum.java

 public class Sum {
public int sum(int a, int b) {
return a + b;
}
}

新建groovy测试脚本SpockSpecification.groovy

 package com.test.bookup

 import com.example.demo.Sum
import spock.lang.Specification
import spock.lang.Unroll; /**
* Created by hande on 2018/7/18.
*/
class SpockSpecification extends Specification{ // 调用外部类测试
def sum = new Sum();
def "get sum"(){
expect:
sum.sum(,) ==
} // Where Blocks 简单大小比较函数测试
def "get max num"(){
expect:
Math.max(a,b) == c where:
a|b|c
||
||
||
} def "get min num"(){
expect:
Math.min(a,b) == c where:
a|b|c
||
||
||
} // 上述例子实际会跑三次测试,相当于在for循环中执行三次测试,如果在方法前声明@Unroll,则会当成三个方法运行。
@Unroll
def "@Unroll test"(){
expect:
Math.min(a,b) == c where:
a|b|c
||
||
||
} // where block另外两种数据定义方法
def "where block data init method"(){
expect:
Math.max(a,b) == c where:
a|_
|_
|_
|_ b<<[,,] c=a>b?a:b
} // When and Then Blocks
def "When and Then Blocks"(){
setup:
def stack = new Stack();
def em = "push me"; when:
stack.push(em); then:
!stack.empty();
stack.size() == ;
stack.peek() == em;
} // mock应用
Publisher publisher = new Publisher()
Subscriber subscriber = Mock()
Subscriber subscriber2 = Mock() def setup() {
publisher.subscribers.add(subscriber)
publisher.subscribers.add(subscriber2)
} def"should send messages to all subscribers"(){
when:
publisher.send("hello") then:
*subscriber.receive("hello")
*subscriber2.receive("hello")
}
// 上面的例子里验证了:在publisher调用send时,两个subscriber都应该被调用一次receive(“hello”)。
109 }

表达式中的次数、对象、函数和参数部分说明

 * subscriber.receive("hello")      // exactly one call
* subscriber.receive("hello") // zero calls
(..) * subscriber.receive("hello") // between one and three calls (inclusive)
(.._) * subscriber.receive("hello") // at least one call
(_..) * subscriber.receive("hello") // at most three calls
_ * subscriber.receive("hello") // any number of calls, including zero
* subscriber.receive("hello") // an argument that is equal to the String "hello"
* subscriber.receive(!"hello") // an argument that is unequal to the String "hello"
* subscriber.receive() // the empty argument list (would never match in our example)
* subscriber.receive(_) // any single argument (including null)
* subscriber.receive(*_) // any argument list (including the empty argument list)
* subscriber.receive(!null) // any non-null argument
* subscriber.receive(_ as String) // any non-null argument that is-a String
* subscriber.receive({ it.size() > }) // an argument that satisfies the given predicate
// (here: message length is greater than 3)
* subscriber._(*_) // any method on subscriber, with any argument list
* subscriber._ // shortcut for and preferred over the above
* _._ // any method call on any mock object
* _ // shortcut for and preferred over the above

Stubbing

对mock对象定义函数的返回值可以用如下方法:

subscriber.receive(_)>>"ok"

符号代表函数的返回值,执行上面的代码后,再调用subscriber.receice方法将返回ok。如果要每次调用返回不同结果,可以使用:

subscriber.receive(_) >>> ["ok", "error", "error", "ok"]

如果要做额外的操作,如抛出异常,可以使用:

subscriber.receive(_)>>{thrownewInternalError("ouch")}

而如果要每次调用都有不同的结果,可以把多次的返回连接起来:

subscriber.receive(_) >>> ["ok", "fail", "ok"] >> { throw new InternalError() } >> "ok"

mock and stubbing

如果既要判断某个mock对象的交互,又希望它返回值的话,可以结合mock和stub,可以这样:

then:
*subscriber.receive("message1")>>"ok"
*subscriber.receive("message2")>>"fail"

注意,spock不支持两次分别设定调用和返回值,如果把上例写成这样是错的:

setup:
subscriber.receive("message1")>>"ok" when:
publisher.send("message1") then:
*subscriber.receive("message1")

此时spock会对subscriber执行两次设定:

第一次设定receive(“message1”)只能调用一次,返回值为默认值(null)。
第二次设定receive(“message1”)会返回ok,不限制次数。

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