CODEWITHSUNDEEP
angularjsunit-testingjasminepromise
Harry
Harry

Reputation: 73

How to mock AngularJS $resource with $promise.then in jasmine

I have a a factory which uses Angular resource to make API call. I then created a function called getObjectById and use the factory to query for that object and then modify the object before returning.

Service:

return getObjectById: function(id) {
   return objectFactory.getById({ id: id }).$promise.then(function(response) {
      return modifyObject(response.object);
   });
}

I want to test that modifyObject() is working correctly but modifyObject is a private function.

So to test it i'm trying to mock object the response object factory is returning with a spy.

Test:

beforeEach(function() {
   inject(function(objectFactory, $q) {
      spyOn(objectFactory, 'getById').and.returnValue({ $promise: $q.when(readJSON('test/resources/object.json'))});
   });
});

But everytime I run the test I get the error:

TypeError: Cannot read property 'returnValue' of undefined

If I can get any help on getting it to work that will be great. Even suggestion if i'm doing the layout wrong. Using latest Version Of Jasmine

Upvotes: 3

Views: 910

Answers (2)

masterfloda
masterfloda

Reputation: 3038

It's a very late answer, but I just ran into the same issue in an AngularJS / Angular hybrid app. We are using jasmine v1, but imported jasmine v2 typing. Which means the TypeScript would not compile with v1 syntax but would fail with TypeError: Cannot read property 'returnValue' of undefined.

The jasmine version needs to match the typing:

"karma-jasmine": "0.1" means jasmine v1 and requires "@types/jasmine": "^1.3.0"

"karma-jasmine": "0.3" would be jasmine v2 and requires "@types/jasmine": "2.8"

Upvotes: 1

Sherlocked Nguyen
Sherlocked Nguyen

Reputation: 594

You're missing the closing bracket

spyOn(objectFactory, 'getById').and.returnValue({ $promise: $q.when(readJSON('test/resources/object.json'))});

Upvotes: 0

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