Angular unit tests - timeout, exception

Demonstrating usage of module and inject from angular mocks

by John-Philip Johansson

HTML

<script src="http://jasmine.github.io/1.3/lib/jasmine.js"></script>
<script src="http://jasmine.github.io/1.3/lib/jasmine-html.js"></script>
<link rel="stylesheet" href="http://jasmine.github.io/1.3/lib/jasmine.css">
<script src="http://code.angularjs.org/1.2.9/angular.js"></script>
<script src="http://code.angularjs.org/1.2.9/angular-mocks.js"></script>

JavaScript

//--- CODE --------------------------
angular.module('myApp', []).service('MyService', ['$q', '$timeout', function ($q, $timeout) {
    this.foo = function () {
        var deferred = $q.defer();

        $timeout(function () {
            deferred.resolve('resolved value');
        }, 90000);

        return deferred.promise;
    }
}]);

// --- SPECS -------------------------

describe('$timeout', function () {

    beforeEach(function () {
        // Register module configuation code for myApp
        module('myApp');
    });

    it("flushes timeout synchronously", inject(function (MyService, $timeout) {
        var valueToVerify,
        resolvedSpy = jasmine.createSpy();
        // Call service under test with mock object
        MyService.foo().then(resolvedSpy);
        expect(resolvedSpy).not.toHaveBeenCalled();
        // Timeout immediately executes function on flush()
        $timeout.flush();
        expect(resolvedSpy).toHaveBeenCalledWith('resolved value');
    }));

    it('should throw an exception when not flushed', inject(function ($timeout) {
        $timeout(angular.noop);

        expect(function () {
            $timeout.verifyNoPendingTasks();
        }).toThrow();
    }));


    it('should do nothing when all tasks have been flushed', inject(function ($timeout) {
        $timeout(angular.noop);

        $timeout.flush();
        expect(function () {
            $timeout.verifyNoPendingTasks();
        }).not.toThrow();
    }));
});

describe('$exceptionHandlerProvider and $LogProvider', function () {

    it('should capture log messages and exceptions', function () {

        // Mock implementation of $log gathers all logged messages in arrays
        // These arrays are exposed as `logs` property of each of the
        // level-specific log function

        module(function ($exceptionHandlerProvider) {
            // "log" mode stores an array of errors in $exceptionHandler.errors
            $exceptionHandlerProvider.mode('log');
      ...