After reading the AngularJS document fo $httpBackend, I am still not very clear what the difference between $httpBackend.expect
and $httpBackend.when
as both are functions for mocking http requests.
Could someone help explain the difference between these two functions? And also when shall I use $httpBackend.when
instead of $httpBackend.expect
?
Answers
The answer is fairly clear in the documentation, however, here is the main difference:
$httpBackend.when
will return you a fake http response, but not fail the test if the URL declared is never called.
$httpBackend.expect
will return you a fake http response. but fail the test if the URL declared is never called.
So, expect
sets up an test expectation that the test must call the URL that is set up.
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