Encountered an issue during Karma unit testing of an Ionic App: the error message [ng:areq] indicates that the argument 'StockCtrl' is not recognized as a function and is

I've encountered an issue while trying to conduct unit testing on my ionic app. Despite checking previous queries, none of the given solutions seem to work for me. Any suggestions on what might be causing this error?

The error message I'm receiving is as follows:

PhantomJS 1.9.8 (Mac OS X 0.0.0) StockCtrl should have a scope variable defined FAILED
TypeError: 'undefined' is not a function (evaluating 'queueableFn.fn.call(self.userContext)')
Error: [ng:areq] Argument 'StockCtrl' is not a function, got undefined
http://errors.angularjs.org/1.4.3/ng/areq?p0=StockCtrl&p1=not%20a%20function%2C%20got%20undefined
undefined
    at assertArg (/Users/Projects/online-shop/www/lib/angular/angular.js:1770)
    at assertArgFn (/Users/Projects/online-shop/www/lib/angular/angular.js:1781)
    at /Users/Projects/online-shop/www/lib/angular/angular.js:8975
    at /Users/Projects/online-shop/www/lib/angular-mocks/angular-mocks.js:1848
    at /Users/Projects/online-shop/test/stockController.spec.js:9
    at invoke (/Users/Projects/online-shop/www/lib/angular/angular.js:4450)
    at workFn (/Users/Projects/online-shop/www/lib/angular-mocks/angular-mocks.js:2404)
PhantomJS 1.9.8 (Mac OS X 0.0.0): Executed 1 of 1 (1 FAILED) ERROR (0.006 secs / 0.007 secs)

Here is a snippet from stockFactory.js file:

app.factory('stockService', function($resource){
 return $resource('js/shopStock.json/:items', 'items');
})

And here's code from stockController.js:

app.controller("StockCtrl", function($scope, $rootScope, $stateParams, stockService) {

var items = stockService.get(function(){
    $scope.stock = items['items'];
  });
});

For Unit Testing, here is stockController.spec.js:

describe('StockCtrl', function() {
  beforeEach(angular.module('Shop'));

   var scope;


   beforeEach(inject(function($rootScope, $controller){
       scope = $rootScope.$new();
      $controller("StockCtrl", {$scope: scope});
  }));

  it("should have a scope variable defined", function() {
      expect(scope).toBeDefined();
   });
});

I attempted using 'module' instead of 'angular.module' as recommended but was met with another error:

Error: [$injector:modulerr] Failed to instantiate module Shop due to:
Error: [$injector:modulerr] Failed to instantiate module ionic due to:
Error: [$injector:nomod] Module 'ionic' is not available! You either misspelled the module name or forgot to load it. If registering a module ensure that you specify the dependencies as the second argument.
http://errors.angularjs.org/1.4.3/$injector/nomod?p0=ionic

Your guidance and assistance would be highly appreciated.

Furthermore, does anyone have insights on how to test $resource as a next step?

javascriptangularjsunit-testingionic-framework

Answer №1

Make sure to update your code by replacing 

beforeEach(angular.module('Shop'))
with beforeEach(module('Shop')). If you are having trouble finding the ionic module, it could be due to various reasons. I recommend checking if Karma is loading the necessary files in the correct order when running your tests. Verify that the files property in your Karma.conf file includes a reference to your ionic module.

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