Top "Mocking" questions

How do Mockito matchers work?

Mockito argument matchers (such as any, argThat, eq, same, and ArgumentCaptor.capture()) behave very differently from Hamcrest matchers. Mockito matchers …

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How do I mock an open used in a with statement (using the Mock framework in Python)?

How do I test the following code with unittest.mock: def testme(filepath): with open(filepath) as f: return f.…

python mocking with-statement

Mocking Extension Methods with Moq

I have a preexisting Interface... public interface ISomeInterface { void SomeMethod(); } and I've extended this intreface using a mixin... public static …

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How to mock the JavaScript window object using Jest?

I need to test a function which opens a new tab in the browser openStatementsReport(contactIds) { window.open(`a_url_${…

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How to spyOn a value property (rather than a method) with Jasmine

Jasmine's spyOn is good to change a method's behavior, but is there any way to change a value property (rather …

javascript unit-testing mocking jasmine

Python mock multiple return values

I am using pythons mock.patch and would like to change the return value for each call. Here is the …

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Using Mockito, how do I verify a method was a called with a certain argument?

I'm using Mockito 1.9.0. How would i verify that a method got called exactly once, and that one of the fields …

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Asserting successive calls to a mock method

Mock has a helpful assert_called_with() method. However, as far as I understand this only checks the last call …

python mocking

Mocking a function to raise an Exception to test an except block

I have a function (foo) which calls another function (bar). If invoking bar() raises an HttpError, I want to handle …

python unit-testing python-2.7 mocking python-mock

Mocking a class: Mock() or patch()?

I am using mock with Python and was wondering which of those two approaches is better (read: more pythonic). Method …

python unit-testing mocking