Angular JS Unit Testing (Karma Jasmine) - angularjs

Question

This is my service
angular.module('providers',)
.provider('sample', function(){
this.getName = function(){
return 'name';
};
this.$get = function($http, $log, $q, $localStorage, $sessionStorage) {
this.getTest = function(){
return 'test';
};
};
});
This is my unit test
describe('ProvideTest', function()
{
beforeEach(module("providers"));
beforeEach(function(){
module(function(sampleProvider){
sampleProviderObj=sampleProvider;
});
});
beforeEach(inject());
it('Should call Name', function()
{
expect(sampleProviderObj.getName()).toBe('name');
});
it('Should call test', function()
{
expect(sampleProviderObj.getTest()).toBe('test');
});
});
I am getting an error Type Error: 'undefined' is not a function evaluating sampleProviderObj.getTest()
I need a way to access function inside this.$get . Please help

Answer 1

You should inject your service into the test. Replace this:
beforeEach(function(){
module(function(sampleProvider){
sampleProviderObj=sampleProvider;
});
});
beforeEach(inject());
With this:
beforeEach(inject(function(_sampleProvider_) {
sampleProvider = _sampleProvider_;
}));

Answer 2

Firstly, you need, as had already been said, inject service, that you test. Like following
beforeEach(angular.mock.inject(function ($injector) {
sampleProviderObj = $injector.get('sample');
}));
Second, and more important thing. Sample have no any getTest functions. If you really need to test this function, you should as "Arrange" part of your test execute also $get function of your provider. And then test getTest function of result of previous execution. Like this:
it('Should call test', function()
{
var nestedObj = sampleProviderObj.$get(/*provide correct parameters for this function*/)
expect(nestedObj.getTest()).toBe('test');
});
But it's not good because this test can fail even if nestedObj.getTest work properly (in case when sampleProviderObj.$get works incorrect).
And one more thing, it seems like you need to inject this services $http, $log, $q, $localStorage, $sessionStorage to you provider rather then passing them as parameters.