Jasmine spec helper basics

ajax.js

App.testHelpers.stubAjaxRequestWithData = function (requestURL, data, status) {
  jasmine.Ajax.stubRequest(requestURL)
  .andReturn({
    status: status,
    responseText: data,
    contentType: 'text/html',
  });
};

App.testHelpers.stubSuccessfulAjaxRequestWithData =
  function (requestURL, data) {
    App.testHelpers.stubAjaxRequestWithData(requestURL, data, 200);
  };

App.testHelpers.dataForFixturePath = function (fixturePath) {
  return App.testHelpers.withoutMockAjax(function () {
    return readFixtures(fixturePath);
  });
};

App.testHelpers.stubAjaxRequestNoFixture = function (requestURL) {
  App.testHelpers.stubSuccessfulAjaxRequestWithData(requestURL, '');
};

App.testHelpers.stubAjaxRequestWithStatus =
  function (requestURL, fixturePath, status) {
    App.testHelpers.stubAjaxRequestWithData(
    requestURL,
    App.testHelpers.dataForFixturePath(fixturePath),
    status
  );
};

App.testHelpers.stubAjaxRequest = function (requestURL, fixturePath) {
  App.testHelpers.stubSuccessfulAjaxRequestWithData(
    requestURL,
    App.testHelpers.dataForFixturePath(fixturePath)
  );
};

/*
jQuery's AJAX handler normally fires the callback in a setTimeout
in order to make it occur in the next tick of the event loop. This
forces us to use `jasmine.clock().tick()` in tests. By making AJAX
synchronous, the callbacks fire immediately.
*/
$.ajaxSetup({ async: false });

disable_transitions.css

* {
  transition: none !important; // the only time I will *EVER* use !important, I promise.
}

load_fixture.js

jasmine.getFixtures().containerId = 'jasmine_content';

App.testHelpers.loadFixture = function (fixturePath) {
  App.testHelpers.withoutMockAjax(function () {
    loadFixtures(fixturePath + '.html');
  });
};

mock-ajax.js

// Get this from http://github.com/jasmine/jasmine-ajax

mock_all_ajax.js

/**
 * This ensures that our JavaScript doesn't use unstubbed AJAX calls
 */

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

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

mock_clock.js

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

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

mock_date.js

beforeEach(function () {
  jasmine.clock().mockDate(
    new Date(2015, 4, 20)
  );
  spyOn(jQuery, 'now').and.callFake(Date.now);
});

prevent_globals.js

/**
 * This ensures that our JavaScript doesn't set global variables.
 */

beforeEach(function () {
  this.windowKeys = _.keys(window);
});

afterEach(function () {
  expect(_.difference(
    _.keys(window),
    this.windowKeys
  )).toEqual([]);
});

stub_turbolinks.js

beforeEach(function () {
  spyOn(Turbolinks, 'visit');
});

without_mock_ajax.js

App.testHelpers.withoutMockAjax = function (callback) {
  try {
    jasmine.Ajax.uninstall();
    return callback();
  }finally {
    jasmine.Ajax.install();
  }
};