OCMockito - Verify order of method invocations

Question

As far as I can see, there is no way to verify the order of method invocations on a mock.
Or am I missing something?

- (void)testResetCameraState_resetsCameraView
{
   // Arrange
   [given([_cameraManagerMock previewLayer]) willReturn:_testLayer];

   // Act
   [_cameraInteractor resetCameraState];

   // Assert
   [verifyCount(_cameraViewMock, times(1)) resetPreview];
   [verifyCount(_cameraViewMock, times(1)) setPreviewLayer:_testLayer];
}

In this case you cannot verify, that the setPreviewLayer: is called after resetPreview.

Answer 1

I think I found a solution.
It's based on the givenVoid method added in this pull request: https://github.com/jonreid/OCMockito/pull/93

Sadly it is not merged yet, so you need to download and build this version by yourself: https://github.com/lysannschlegel/OCMockito/tree/given_void

With the new method you can verify the order of method calls in the following way:

- (void)testResetCameraState_resetsCameraView
{
    // Arrange
    [given([_cameraManagerMock previewLayer]) willReturn:_testLayer];
    [givenVoid([self->_cameraViewMock resetPreview]) willDo:^id (NSInvocation *invocation)
     {
         [(MKTBaseMockObject*)self->_cameraViewMock reset];
         return nil;
     }];

    // Act
    [_cameraInteractor resetCameraState];

    // Assert
    [verifyCount(_cameraViewMock, never()) resetPreview];
    [verifyCount(_cameraViewMock, times(1)) setPreviewLayer:_testLayer];
}

This will reset the mock after the first call of resetPreview.
So we can verify stuff after that call:

1. resetPreview is never called after the first call.
2. setPreviewLayer is called after resetPreview.

The reset call also resets the givenVoid() willDo: so a second reset call wouldn't reset the mock again.

Hope this helps, happy coding :D