Angular-jasmine: conducting tests on a component that utilizes timeout to render the DOM

Question

Angular-jasmine: conducting tests on a component that utilizes timeout to render the DOM

Within my custom directive, I have implemented the following functionality:

link: function (scope, element) {
    var editor = CKEDITOR.inline(element.find('div[contenteditable]')[0], {}

To ensure that the directive is properly linked and that the editor is successfully created within the element using the CKEDITOR.inline method, I have written this test:

it('should compile', function () {  

    var element = angular.element('<directive></directive>');
    var compiled = $compile(element)(scope);
    $('body').append(compiled);

    expect(element.find('.ckeditor')).toExist();
});

However, a challenge arises as CKEDITOR updates the DOM asynchronously:

CKEDITOR.inline = function(element) {
    setTimeout(function() {
        element.append('<div class=ckeditor></div>');
    },0);
}

As a result, the test fails to locate the element with the specified class due to the asynchronous nature of the element insertion. How can I address this issue in testing?

javascript angularjs unit-testing jasmine

Answer 1

Answer №1

Specifications have the ability to be executed in an asynchronous manner:

it('must pass compilation', function (done) {  
    ...
    setTimeout(() => {
        expect(element.find('.ckeditor')).toExist();
        done();
    }, 10);
});

Alternatively, jasmine.clock can be utilized:

beforeEach(function() {
    jasmine.clock().install();
});

afterEach(function() {
    jasmine.clock().uninstall();
});


it('must pass compilation', function () {  
    ...
    jasmine.clock().tick(10);
    expect(element.find('.ckeditor')).toExist();
});

Answer 2

Specifications have the ability to be executed in an asynchronous manner:

it('must pass compilation', function (done) {  
    ...
    setTimeout(() => {
        expect(element.find('.ckeditor')).toExist();
        done();
    }, 10);
});

Alternatively, jasmine.clock can be utilized:

beforeEach(function() {
    jasmine.clock().install();
});

afterEach(function() {
    jasmine.clock().uninstall();
});


it('must pass compilation', function () {  
    ...
    jasmine.clock().tick(10);
    expect(element.find('.ckeditor')).toExist();
});

Angular-jasmine: conducting tests on a component that utilizes timeout to render the DOM

Answer №1

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