public void GetPolicyById_EmptyGuidId_ReturnsNull() // NameOfMethodTesting_TestConditionUsed_ExpectedResult
{
// ARRANGE (set up the test)
// Create mock repository to avoid using the actual database
IPolicyRepository fakeRepo = new MirrorPolicyRepository();
// Create interactor to test and inject mock repository
// Your production code may not need a constructor that calls for a repo as a paramter,
// so you may need to add it strictly for testing purposes.
IGetPolicyInteractor interactor = new GetPolicyInteractor(fakeRepo);
// Create value to test with
var newGuid = Guid.Empty;
// ACT (run the test)
// Perform the unit of work needing to be tested
var result = interactor.GetById(newGuid);
// ASSERT (declare what should have happened and check it)
// There is no policy with that Guid, so no policy should be returned
result.ShouldBe(null);
}
public void GetPolicyById_NewTestPolicy_ReturnsTestId()
{
// Arrange
// Create mock repo and insert a new policy
IPolicyRepository fakeRepo = new MirrorPolicyRepository();
var testPolicy = new Policy {
Id = Guid.NewGuid()
};
// Create interactor to test and insert the mock repository
IGetPolicyInteractor interactor = new GetPolicyInteractor(fakeRepo);
// Act
// using testPolicy's Id, try to get the test policy
var result = interactor.GetById(testPolicy.Id);
// Assert
// Since the test policy exists, the interactor should return it and it should be the same
// as the testPolicy object
result.Id.ShouldBe(testPolicy.Id);
}