Mockito: Verifying method arguments with inOrder


Posted by Steven

Yesterday, I learned how to verify the method parameter for multiple method calls in Mockito. My pair-programmer and I wrote code that send multiple messages to an Amazon SQSClient. We wanted to test if a) all expected send-calls were executed and b) if all of those had the correct argument.

On SO, we found the solution (rewritten for better understanding):

  1.     @Test
  2.     void capturingArgumentOfMultipleSubsequentCalls() {
  3.  
  4.         MyClass myClassSpy = spy(new MyClass());
  5.  
  6.         myClassSpy.receivingAnArgument(1);
  7.         myClassSpy.receivingAnArgument(2);
  8.         myClassSpy.receivingAnArgument(3);
  9.  
  10.         InOrder inOrder = inOrder(myClassSpy);
  11.         inOrder.verify(myClassSpy).receivingAnArgument(argThat((i) -> (i == 1)));
  12.         inOrder.verify(myClassSpy).subsequentlyCalledMethod(argThat((i) -> (i == 1)));
  13.         inOrder.verify(myClassSpy).receivingAnArgument(argThat((i) -> (i == 2)));
  14.         inOrder.verify(myClassSpy).subsequentlyCalledMethod(argThat((i) -> (i == 2)));
  15.         inOrder.verify(myClassSpy).receivingAnArgument(argThat((i) -> (i == 3)));
  16.         inOrder.verify(myClassSpy).subsequentlyCalledMethod(argThat((i) -> (i == 3)));
  17.  
  18.     }
  19.  
  20.     class MyClass {
  21.  
  22.         void receivingAnArgument(Integer i) {
  23.             System.out.println("Received a " + i);
  24.             subsequentlyCalledMethod(i);
  25.         }
  26.  
  27.         void subsequentlyCalledMethod(Integer i) {
  28.             System.out.println("Private method called with " + i);
  29.         }
  30.     }
Share: