axe-core/test/core/utils/send-command-to-frame.js

Accessibility engine for automated Web UI testing

describe('axe.utils.sendCommandToFrame', function () {
	'use strict';

	var fixture = document.getElementById('fixture');

	afterEach(function () {
		fixture.innerHTML = '';
		axe._tree = undefined;
		axe._selectorData = undefined;
	});

	var assertNotCalled = function () {
		assert.ok(false, 'should not be called');
	};

	it('should timeout if there is no response from frame', function (done) {
		var orig = window.setTimeout;
		window.setTimeout = function (fn, to) {
			if (to === 30000) {
				assert.ok('timeout set');
				fn();
			} else { // ping timeout
				return orig(fn, to);
			}
			return 'cats';
		};

		var frame = document.createElement('iframe');
		frame.addEventListener('load', function () {
			axe._tree = axe.utils.getFlattenedTree(document.documentElement);
			axe.utils.sendCommandToFrame(frame, {}, function (result) {
				assert.equal(result, null);
				done();
			}, assertNotCalled);
			window.setTimeout = orig;
		});

		frame.id = 'level0';
		frame.src = '../mock/frames/zombie-frame.html';
		fixture.appendChild(frame);

	});

	it('should respond once when no keepalive', function (done) {
		var frame = document.createElement('iframe');
		frame.addEventListener('load', function () {
			axe.utils.sendCommandToFrame(frame, {
				number: 1
			}, function () {
				assert.isTrue(true);
				done();
			}, assertNotCalled);
		});

		frame.id = 'level0';
		frame.src = '../mock/frames/responder.html';
		fixture.appendChild(frame);

	});

	it('should respond multiple times when keepalive', function (done) {
		var number = 3;
		var called = 0;
		var frame = document.createElement('iframe');
		frame.addEventListener('load', function () {
			setTimeout(function () {
				axe.utils.sendCommandToFrame(frame, {
					number: number,
					keepalive: true
				}, function () {
					called += 1;
					if (called === number) {
						assert.isTrue(true);
						done();
					}
				}, assertNotCalled);
			}, 500);
		});

		frame.id = 'level0';
		frame.src = '../mock/frames/responder.html';
		fixture.appendChild(frame);

	});

	it('should respond once when no keepalive', function (done) {
		var number = 1;
		var called = 0;
		var frame = document.createElement('iframe');
		frame.addEventListener('load', function () {
			axe.utils.sendCommandToFrame(frame, {
				number: number
			}, function () {
				called += 1;
				if (called === number) {
					assert.isTrue(true);
					done();
				} else {
					throw new Error ('should not have been called');
				}
			}, assertNotCalled);
		});

		frame.id = 'level0';
		frame.src = '../mock/frames/responder.html';
		fixture.appendChild(frame);

	});

});