Counting method invocations in Unit tests

Question

What is the best way to count method invocations in a Unit Test. Do any of the testing frameworks allow that?

Answer 1

It sounds like you may want to be using the .expects(1) type methods that mock frameworks usually provide.

Using mockito, if you were testing a List and wanted to verify that clear was called 3 times and add was called at least once with these parameters you do the following:

List mock = mock(List.class);         someCodeThatInteractsWithMock();                   verify(mock, times(3)).clear(); verify(mock, atLeastOnce()).add(anyObject());       

Source - MockitoVsEasyMock

Answer 2

In Mockito you can do something like this:

YourService serviceMock = Mockito.mock(YourService.class);  // code using YourService  // details of all invocations including methods and arguments Collection<Invocation> invocations = Mockito.mockingDetails(serviceMock).getInvocations(); // just a number of calls of any mock's methods int numberOfCalls = invocations.size();