Angular controller unit testing is an essential practice in software development

I am currently working with an angular module named 'widgets'. In my app, I have used its signature as follows:

var app = angular.module('widgets', [
    'widget.Panel',
    'widget.List',
    'services'
]);

In addition to this, I have created a controller from the app variable:

app.controller('clientListController', ['$scope', '$http', 'ServiceProvider', function ($scope, $http, ServiceProvider) {

Now, I am attempting to write a unit test for the 'clientListController'. Here is what has been implemented so far:

describe('clientListController', function () {
    var ctrl, scope;

    beforeEach(angular.module('widgets'));
    beforeEach(inject(function ($rootScope, $controller) {
        scope = $rootScope.$new();
        ctrl = $controller('clientListController', { $scope: scope });
    }));

    it("should define openClient function", function () {
        expect(scope.openClient).toBeDefined();
    });
});

However, when running the tests, an error is encountered:

Error: Argument 'clientListController' is not a function, got undefined 

I am puzzled as to why 'clientListController' is not being defined in the test. Could there be an issue with how the test is written or possibly related to the dependencies?

Answer №1

To ensure angular-mocks works properly, make sure to include either beforeEach(module('widgets')) or

beforeEach(angular.mock.module('widgets'))
in your code. Simply calling module is not sufficient as it needs to be set for angular-mocks to function correctly. By using angular.mock.module, it will automatically assign to window.module for ease of use.

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