9ba3261571
This adds `page.accessibility.snapshot()`. It serializes and returns the accessibility tree for the page. By default, uninteresting nodes are filtered out of the snapshot. fixes #2033
220 lines
8.2 KiB
JavaScript
220 lines
8.2 KiB
JavaScript
/**
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* Copyright 2018 Google Inc. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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module.exports.addTests = function({testRunner, expect}) {
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const {describe, xdescribe, fdescribe} = testRunner;
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const {it, fit, xit} = testRunner;
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const {beforeAll, beforeEach, afterAll, afterEach} = testRunner;
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describe('Accessibility', function() {
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it('should work', async function({page}) {
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await page.setContent(`
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<head>
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<title>Accessibility Test</title>
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</head>
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<body>
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<div>Hello World</div>
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<h1>Inputs</h1>
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<input placeholder="Empty input" autofocus />
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<input placeholder="readonly input" readonly />
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<input placeholder="disabled input" disabled />
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<input aria-label="Input with whitespace" value=" " />
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<input value="value only" />
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<input aria-placeholder="placeholder" value="and a value" />
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<div aria-hidden="true" id="desc">This is a description!</div>
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<input aria-placeholder="placeholder" value="and a value" aria-describedby="desc" />
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<select>
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<option>First Option</option>
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<option>Second Option</option>
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</select>
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</body>`);
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expect(await page.accessibility.snapshot()).toEqual({
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role: 'WebArea',
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name: 'Accessibility Test',
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children: [
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{role: 'text', name: 'Hello World'},
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{role: 'heading', name: 'Inputs', level: 1},
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{role: 'textbox', name: 'Empty input', focused: true},
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{role: 'textbox', name: 'readonly input', readonly: true},
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{role: 'textbox', name: 'disabled input', disabled: true},
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{role: 'textbox', name: 'Input with whitespace', value: ' '},
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{role: 'textbox', name: '', value: 'value only'},
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{role: 'textbox', name: 'placeholder', value: 'and a value'},
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{role: 'textbox', name: 'placeholder', value: 'and a value', description: 'This is a description!'},
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{role: 'combobox', name: '', value: 'First Option', children: [
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{role: 'menuitem', name: 'First Option', selected: true},
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{role: 'menuitem', name: 'Second Option'}]}]
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});
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});
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it('should report uninteresting nodes', async function({page}) {
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await page.setContent(`<textarea autofocus>hi</textarea>`);
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expect(findFocusedNode(await page.accessibility.snapshot({interestingOnly: false}))).toEqual({
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role: 'textbox',
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name: '',
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value: 'hi',
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focused: true,
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multiline: true,
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children: [{
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role: 'GenericContainer',
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name: '',
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children: [{
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role: 'text', name: 'hi'
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}]
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}]
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});
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});
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describe('filtering children of leaf nodes', function() {
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it('should not report text nodes inside controls', async function({page}) {
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await page.setContent(`
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<div role="tablist">
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<div role="tab" aria-selected="true"><b>Tab1</b></div>
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<div role="tab">Tab2</div>
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</div>`);
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expect(await page.accessibility.snapshot()).toEqual({
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role: 'WebArea',
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name: '',
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children: [{
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role: 'tab',
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name: 'Tab1',
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selected: true
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}, {
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role: 'tab',
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name: 'Tab2'
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}]
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});
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});
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it('rich text editable fields should have children', async function({page}) {
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await page.setContent(`
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<div contenteditable="true">
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Edit this image: <img src="fakeimage.png" alt="my fake image">
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</div>`);
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const snapshot = await page.accessibility.snapshot();
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expect(snapshot.children[0]).toEqual({
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role: 'GenericContainer',
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name: '',
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value: 'Edit this image: ',
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children: [{
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role: 'text',
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name: 'Edit this image:'
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}, {
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role: 'img',
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name: 'my fake image'
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}]
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});
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});
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it('rich text editable fields with role should have children', async function({page}) {
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await page.setContent(`
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<div contenteditable="true" role='textbox'>
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Edit this image: <img src="fakeimage.png" alt="my fake image">
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</div>`);
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const snapshot = await page.accessibility.snapshot();
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expect(snapshot.children[0]).toEqual({
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role: 'textbox',
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name: '',
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value: 'Edit this image: ',
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children: [{
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role: 'text',
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name: 'Edit this image:'
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}, {
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role: 'img',
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name: 'my fake image'
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}]
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});
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});
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it('plain text field with role should not have children', async function({page}) {
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await page.setContent(`
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<div contenteditable="plaintext-only" role='textbox'>Edit this image:<img src="fakeimage.png" alt="my fake image"></div>`);
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const snapshot = await page.accessibility.snapshot();
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expect(snapshot.children[0]).toEqual({
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role: 'textbox',
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name: '',
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value: 'Edit this image:'
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});
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});
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it('plain text field without role should not have content', async function({page}) {
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await page.setContent(`
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<div contenteditable="plaintext-only">Edit this image:<img src="fakeimage.png" alt="my fake image"></div>`);
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const snapshot = await page.accessibility.snapshot();
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expect(snapshot.children[0]).toEqual({
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role: 'GenericContainer',
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name: ''
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});
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});
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it('plain text field with tabindex and without role should not have content', async function({page}) {
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await page.setContent(`
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<div contenteditable="plaintext-only">Edit this image:<img src="fakeimage.png" alt="my fake image"></div>`);
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const snapshot = await page.accessibility.snapshot();
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expect(snapshot.children[0]).toEqual({
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role: 'GenericContainer',
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name: ''
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});
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});
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it('non editable textbox with role and tabIndex and label should not have children', async function({page}) {
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await page.setContent(`
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<div role="textbox" tabIndex=0 aria-checked="true" aria-label="my favorite textbox">
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this is the inner content
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<img alt="yo" src="fakeimg.png">
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</div>`);
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const snapshot = await page.accessibility.snapshot();
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expect(snapshot.children[0]).toEqual({
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role: 'textbox',
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name: 'my favorite textbox',
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value: 'this is the inner content '
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});
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});
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it('checkbox with and tabIndex and label should not have children', async function({page}) {
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await page.setContent(`
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<div role="checkbox" tabIndex=0 aria-checked="true" aria-label="my favorite checkbox">
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this is the inner content
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<img alt="yo" src="fakeimg.png">
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</div>`);
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const snapshot = await page.accessibility.snapshot();
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expect(snapshot.children[0]).toEqual({
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role: 'checkbox',
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name: 'my favorite checkbox',
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checked: true
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});
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});
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it('checkbox without label should not have children', async function({page}) {
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await page.setContent(`
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<div role="checkbox" aria-checked="true">
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this is the inner content
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<img alt="yo" src="fakeimg.png">
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</div>`);
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const snapshot = await page.accessibility.snapshot();
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expect(snapshot.children[0]).toEqual({
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role: 'checkbox',
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name: 'this is the inner content yo',
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checked: true
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});
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});
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});
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function findFocusedNode(node) {
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if (node.focused)
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return node;
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for (const child of node.children || []) {
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const focusedChild = findFocusedNode(child);
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if (focusedChild)
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return focusedChild;
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}
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return null;
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}
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});
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};
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