spec/javascripts/version_check_image_spec.js


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33

const ClassSpecHelper = require('./helpers/class_spec_helper');
const VersionCheckImage = require('~/version_check_image');
require('jquery');

describe('VersionCheckImage', function () {
  describe('.bindErrorEvent', function () {
    ClassSpecHelper.itShouldBeAStaticMethod(VersionCheckImage, 'bindErrorEvent');

    beforeEach(function () {
      this.imageElement = $('<div></div>');
    });

    it('registers an error event', function () {
      spyOn($.prototype, 'on');
      spyOn($.prototype, 'off').and.callFake(function () { return this; });

      VersionCheckImage.bindErrorEvent(this.imageElement);

      expect($.prototype.off).toHaveBeenCalledWith('error');
      expect($.prototype.on).toHaveBeenCalledWith('error', jasmine.any(Function));
    });

    it('hides the imageElement on error', function () {
      spyOn($.prototype, 'hide');

      VersionCheckImage.bindErrorEvent(this.imageElement);

      this.imageElement.trigger('error');

      expect($.prototype.hide).toHaveBeenCalled();
    });
  });
});