public void RemoveCommitmentById_Valid() { // arrange var commitmentId = int.MinValue; var removeCommitmentByIdMethodCalled = false; _mockDataService.Setup(m => m.RemoveCommitmentById(It.IsAny <int>())).Callback(() => removeCommitmentByIdMethodCalled = true); // act _disasterService.RemoveCommitmentById(commitmentId); // assert Assert.IsTrue(removeCommitmentByIdMethodCalled); }