AngularJS JasmineJS decorated $log object not injected correctly - angularjs

Question

I am new to AngularJS and JasmineJS.
I have decorated the Angular $log service to do logging over http. I verified that it works fine in the program itself. However, when running the Jasmine unit tests, the $log calls create errors. I get messages such as the following:
TypeError: TypeError: $log.warn.logs is undefined in
http...[snip]...angular-mocks.js (line 316)
The messages follow this pattern for all the different $log functions ($log.error.logs, $log.info.logs, etc.).
My current injector looks like this:
var $httpBackend, log;
beforeEach(inject(function ($injector, $log) {
log = $log;
//lots of mock http service things here
}));
I have also tried this:
beforeEach(inject(['$log', function (log) {
$log = log;
}]));
And this:
beforeEach(inject(function ($injector) {
log = $injector.get('$log');
// mock http things here
}));
A failing test looks like this:
it('should log error', function () {
$httpBackend.expectPOST('the url for logging');
var controller = createController();
log.warn('Test warning');
$httpBackend.flush();
});
All calls to $log in the code being tested result in the same error. When I commented them out and removed the failing test above, all unit tests passed.
How should I set up the unit tests correctly?

Answer 1

The answer is that there is something wrong with angular-mocks.js and it is not instantiating the log arrays correctly. I downloaded the latest non-beta copy, and it's still doing the same thing. The instantiation of arrays happens in their code using a call to $log.reset(), but somehow, that part of their code is not being reached. Therefore, I fixed my problem by manually calling $log.reset():
//This works
var $log;
beforeEach(inject(function ($injector) {
$log = $injector.get('$log');
$log.reset();
//continue other stuff
}));
//This also works
var log;
beforeEach(inject(function ($injector, $log) {
log = $log;
log.reset();
//continue other stuff
}));