Spock如何在方法中模拟自动装配类的函数调用 [英] Spock How to mock Autowired class' function call within a method

问题描述

我有一个我想测试的类，如下所示：
package com.something;

  import org.springframework.beans.factory.annotation.Autowired; 
 public class ClassToTest implements InterfaceToTest {
 
 @Autowired 
 AnotherService serviceA; 
 
 @Override 
 public List< String> methodToTest（List< String> randomVar）{
 ... 
 String stringA = serviceA.someFunction（randomVar）; 
 ... 
} 
} 
  

如何模拟调用serviceA.someFunction（randomVar）返回任何我选择的字符串时使用spock测试的结果？

  package com .something; 
 import spock.lang.Shared $ b $ import spock.lang.Specification $ b $ class TestClass extends Specification {
 @Shared InterfaceToTest classToTest = new ClassToTest（）
 
静态doWithSpring = {
 serviceA（AnotherService）
} 
 
 deftests-part-1（）{
 when：something
。 .. 
 then：expect this
 ... 
} 
} 
  

我不知道该从哪里出发。我的IDE用添加到测试类中的doWithSpring代码显示错误。如何处理这个问题的任何想法？解决方案

它将serviceA字段设置为这样：

  import org.springframework.beans.factory.annotation.Autowired; 
 public class ClassToTest实现了InterfaceToTest {
 
 private AnotherService serviceA; 
 
 @Autowired 
 public ClassToTest（final AnotherService serviceA）{
 this.serviceA = serviceA; 
} 
 
 @Override 
 public List< String> methodToTest（List< String> randomVar）{
 ... 
 String stringA = serviceA.someFunction（randomVar）; 
 ... 
} 
} 
  

然后在你的spock单元测试你可以在构造函数中提供一个模拟：

pre $ class TestClass extends Specification {
def mockServiceA = Mock（AnotherService ）
@Shared InterfaceToTest classToTest = new ClassToTest（mockServiceA）


在每个测试用例中，您可以用通常的spock方式进行模拟：

  1 * mockServiceA.someFunction（_）>> '字符串'
  

I have a class that I want to test in that looks like this: package com.something;

import org.springframework.beans.factory.annotation.Autowired;
public class ClassToTest implements InterfaceToTest{

  @Autowired
  AnotherService serviceA;

  @Override
  public List<String> methodToTest(List<String> randomVar){
    ...
    String stringA = serviceA.someFunction(randomVar);
    ...
  }
}

How can I mock the results from the call to serviceA.someFunction(randomVar) to return any String of my choice when testing with spock?

package com.something;
import spock.lang.Shared
import spock.lang.Specification
class TestClass extends Specification{
  @Shared InterfaceToTest classToTest = new ClassToTest()

  static doWithSpring = {
    serviceA(AnotherService)
  }

  def "tests-part-1"(){
    when: "something"
    ...
    then: "expect this"
    ...
  }
}

I dont know where to go from here. My IDE shows errors with the doWithSpring code I added to the testing class. Any ideas on how to deal with this?

解决方案

A simple solution to enable unit testing would be to alter ClassToTest to have a constructor which sets the serviceA field like this:

import org.springframework.beans.factory.annotation.Autowired;
public class ClassToTest implements InterfaceToTest{

private AnotherService serviceA;

@Autowired
public ClassToTest(final AnotherService serviceA){
   this.serviceA = serviceA;
}

@Override
public List<String> methodToTest(List<String> randomVar){
...
String stringA = serviceA.someFunction(randomVar);
...
}
}

Then in your spock unit test you can provide a mock in the constructor:

class TestClass extends Specification{
 def mockServiceA = Mock(AnotherService)
 @Shared InterfaceToTest classToTest = new ClassToTest(mockServiceA)

And in each test case you can mock in the usual spock way:

1 * mockServiceA.someFunction(_) >> 'A string'

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