Testing a simple service with $httpBackend

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I have a simple service that I want to test. I'm using $httpBackend to mock requests. I'm having problems getting the mocked data back after the ajax call. I know its asynchronous and I need to maybe use a promise. But the problem is I can't find a way to do it. what I think I should do is to use a .then() but Im not sure.

'use strict';

angular.module('adminApp').service("categoryService", function ($http) {

    this.getAllCategories = function () {
        var dataToSend = [];
        console.log("GOING TO CALL GET");
        $http.get("./category/categories").success(function(data, status, headers){
            console.log("IN SUCCESS", data);
             // i need to do something here to return the data to my test
            dataToSend =  data;
        }).error(function(data, status, headers, config){
            console.log("ERROR: ", data,status,headers,config);
            dataToSend = "error";
        });

        return dataToSend;
    };
});

The test

describe("Category Service Tests", function () {

    var myCategoryService, $httpBackend;

    beforeEach(module("adminApp"));

    beforeEach(inject(function (categoryService,_$httpBackend_) {
        $httpBackend = _$httpBackend_;
        $httpBackend.when("GET", "./category/categories").respond(["hello","world"]);
        myCategoryService = categoryService;
     }));

     afterEach(function() {
         $httpBackend.verifyNoOutstandingExpectation();
         $httpBackend.verifyNoOutstandingRequest();
     });

     it('should not be undefined', function() {
         expect($httpBackend).toBeDefined();
     });

     it("Should not be null", function () {
         expect(myCategoryService).toBeDefined();
     });

     it("Should return all available categories", function () {
         $httpBackend.expect("GET",'./category/categories');
         var categoriesList = myCategoryService.getAllCategories();
         $httpBackend.flush();
         console.log(categoriesList);

         expect(categoriesList.length).toBe(2);
});


});

asked 24 secs ago

milo

365