Angular unit testing Controller with service - angularjs

Question

I'm trying to write a unit test using karma and jasmine for an Angular controller that depends on a service
storesController.js
(function () {
var app = angular.module('storesController', ['storesService']);
app.controller('StoresListController', function ($scope, StoresService) {
$scope.getStores = function () {
StoresService.getStores().then(function (data) {
$scope.stores = data.data;
});
};
$scope.getStores();
$scope.deleteStore = function (id) {
StoresService.deleteStore(id).then(function () {
$scope.getStores();
});
};
});
storesService.js
(function () {
var app = angular.module('storesService', []);
app.factory('StoresService', ['$http', function ($http) {
var stores = [];
stores.getStores = function () {
return $http.get(/api/getStores');
};
stores.deleteStore = function (storeID) {
return $http.delete(/api/deleteStore/'+storeID);
};
return stores;
}]);
})();
And the test,
controllers.spec.js
describe('StoresController', function () {
beforeEach(module('storesController'));
var scope;
var storesServiceMock;
var controller;
beforeEach(inject(function ($controller, $rootScope) {
storesServiceMock = {
getStores: function() {
},
deleteStores: function() {
}
};
spyOn(storesServiceMock, 'getStores').and.returnValue({name : 'TestName', country : 'TestCountry'})
scope = $rootScope.$new();
controller = $controller('StoresListController', {
$scope: scope, StoresService: storesServiceMock
});
}));
it('scope.stores should be defined', function () {
expect(scope.stores).toBeDefined;
});
});
And I'm getting
TypeError: StoresService.getStores(...).then is not a function at n.$scope.getStores
I've also tried width httpBackend but I'm not be able to make it work, any clue about what I'm doing wrong?

Answer 1

Have the spy return a promise.
With ES2015:
spyOn(storesServiceMock, 'getStores').and.returnValue(Promise.resolve({name : 'TestName', country : 'TestCountry'}));
With $q:
spyOn(storesServiceMock, 'getStores').and.callFake(function() {
var deferred = $q.defer();
deferred.resolve({name : 'TestName', country : 'TestCountry'}));
return deferred.promise;
});