如何測試是否一個實例方法是從另一個實例方法中調用Grails中使用3斯波克

Question

使用的Grails 3.2.8和用於測試的斯波克框架，給出下面的控制器類：

class SomeController { 
    def doSomething() { 
     // do a few things, then: 
     someOtherMethod() 
    } 

    protected void someOtherMethod() { 
     // do something here, but I don't care 
    } 
} 

我該如何測試doSomething（）方法以確保someOtherMethod()只被調用一次？

這是我的嘗試失敗：

@TestFor(SomeController) 
class SomeControllerSpec extends Specification { 
    void "Test that someOtherMethod() is called once inside doSomething()"() { 
     when: 
     controller.doSomething() 

     then: 
     1 * controller.someOtherMethod(_) 
    } 
} 

錯誤消息：

Too few invocations for: 

1 * controller.someOtherMethod(_) (0 invocations) 

注：專注於手頭的問題進口量已經省略

Answer 1

你不能這樣做，因爲控制器不是一個模擬編輯對象。相反，你需要使用元類是這樣的：

@TestFor(SomeController) 
class SomeControllerSpec extends Specification { 
    void "Test that someOtherMethod() is called once inside doSomething()"() { 
     given: 
      Integer callsToSomeOtherMethod = 0 
      controller.metaClass.someOtherMethod = { 
       callsToSomeOtherMethod++ 
      } 
     when: 
      controller.doSomething() 

     then: 
      callsToSomeOtherMethod == 1 
    } 
}