axe-core/test/checks/aria/valid-attr.js

Accessibility engine for automated Web UI testing

describe('aria-valid-attr', function () {
	'use strict';

	var fixture = document.getElementById('fixture');
	var checkContext = axe.testUtils.MockCheckContext();

	afterEach(function () {
		fixture.innerHTML = '';
		checkContext.reset();
	});

	it('should return false if any invalid ARIA attributes are found', function () {
		var node = document.createElement('div');
		node.id = 'test';
		node.tabIndex = 1;
		node.setAttribute('aria-cats', 'true');
		node.setAttribute('aria-dogs', 'true');
		fixture.appendChild(node);

		assert.isFalse(checks['aria-valid-attr'].evaluate.call(checkContext, node));
		assert.deepEqual(checkContext._data, ['aria-cats', 'aria-dogs']);


	});

	it('should return false if no invalid ARIA attributes are found', function () {
		var node = document.createElement('div');
		node.id = 'test';
		node.tabIndex = 1;
		node.setAttribute('aria-selected', 'true');
		fixture.appendChild(node);

		assert.isTrue(checks['aria-valid-attr'].evaluate.call(checkContext, node));
		assert.isNull(checkContext._data);

	});

	it('should determine attribute validity by calling axe.commons.aria.validateAttr', function () {
		var node = document.createElement('div');
		node.id = 'test';
		node.tabIndex = 1;
		node.setAttribute('aria-cats', 'true');
		node.setAttribute('aria-dogs', 'true');
		fixture.appendChild(node);

		var orig = axe.commons.aria.validateAttr;
		var called = 0;
		axe.commons.aria.validateAttr = function (attrName) {
			assert.match(attrName, /^aria-/);
			called++;
			return true;
		};
		assert.isTrue(checks['aria-valid-attr'].evaluate.call(checkContext, node));
		assert.isNull(checkContext._data);
		assert.equal(called, 2);

		axe.commons.aria.validateAttr = orig;
	});

	describe('options', function () {
		it('should exclude provided attribute names', function () {
			fixture.innerHTML = '<div id="target" aria-bats="cats" aria-puppies="2"></div>';
			var target = fixture.children[0];
			assert.isTrue(checks['aria-valid-attr'].evaluate.call(checkContext, target, ['aria-bats', 'aria-puppies']));
		});
	});

});