/
accessibility.spec.ts
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/
accessibility.spec.ts
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/**
* Copyright 2018 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import assert from 'assert';
import expect from 'expect';
import {SerializedAXNode} from '../../lib/cjs/puppeteer/common/Accessibility.js';
import {
getTestState,
setupTestBrowserHooks,
setupTestPageAndContextHooks,
describeFailsFirefox,
} from './mocha-utils.js';
describeFailsFirefox('Accessibility', function () {
setupTestBrowserHooks();
setupTestPageAndContextHooks();
it('should work', async () => {
const {page, isFirefox} = getTestState();
await page.setContent(`
<head>
<title>Accessibility Test</title>
</head>
<body>
<div>Hello World</div>
<h1>Inputs</h1>
<input placeholder="Empty input" autofocus />
<input placeholder="readonly input" readonly />
<input placeholder="disabled input" disabled />
<input aria-label="Input with whitespace" value=" " />
<input value="value only" />
<input aria-placeholder="placeholder" value="and a value" />
<div aria-hidden="true" id="desc">This is a description!</div>
<input aria-placeholder="placeholder" value="and a value" aria-describedby="desc" />
<select>
<option>First Option</option>
<option>Second Option</option>
</select>
</body>`);
await page.focus('[placeholder="Empty input"]');
const golden = isFirefox
? {
role: 'document',
name: 'Accessibility Test',
children: [
{role: 'text leaf', name: 'Hello World'},
{role: 'heading', name: 'Inputs', level: 1},
{role: 'entry', name: 'Empty input', focused: true},
{role: 'entry', name: 'readonly input', readonly: true},
{role: 'entry', name: 'disabled input', disabled: true},
{role: 'entry', name: 'Input with whitespace', value: ' '},
{role: 'entry', name: '', value: 'value only'},
{role: 'entry', name: '', value: 'and a value'}, // firefox doesn't use aria-placeholder for the name
{
role: 'entry',
name: '',
value: 'and a value',
description: 'This is a description!',
}, // and here
{
role: 'combobox',
name: '',
value: 'First Option',
haspopup: true,
children: [
{
role: 'combobox option',
name: 'First Option',
selected: true,
},
{role: 'combobox option', name: 'Second Option'},
],
},
],
}
: {
role: 'RootWebArea',
name: 'Accessibility Test',
children: [
{role: 'StaticText', name: 'Hello World'},
{role: 'heading', name: 'Inputs', level: 1},
{role: 'textbox', name: 'Empty input', focused: true},
{role: 'textbox', name: 'readonly input', readonly: true},
{role: 'textbox', name: 'disabled input', disabled: true},
{role: 'textbox', name: 'Input with whitespace', value: ' '},
{role: 'textbox', name: '', value: 'value only'},
{role: 'textbox', name: 'placeholder', value: 'and a value'},
{
role: 'textbox',
name: 'placeholder',
value: 'and a value',
description: 'This is a description!',
},
{
role: 'combobox',
name: '',
value: 'First Option',
haspopup: 'menu',
children: [
{role: 'menuitem', name: 'First Option', selected: true},
{role: 'menuitem', name: 'Second Option'},
],
},
],
};
expect(await page.accessibility.snapshot()).toEqual(golden);
});
it('should report uninteresting nodes', async () => {
const {page, isFirefox} = getTestState();
await page.setContent(`<textarea>hi</textarea>`);
await page.focus('textarea');
const golden = isFirefox
? {
role: 'entry',
name: '',
value: 'hi',
focused: true,
multiline: true,
children: [
{
role: 'text leaf',
name: 'hi',
},
],
}
: {
role: 'textbox',
name: '',
value: 'hi',
focused: true,
multiline: true,
children: [
{
role: 'generic',
name: '',
children: [
{
role: 'StaticText',
name: 'hi',
},
],
},
],
};
expect(
findFocusedNode(
await page.accessibility.snapshot({interestingOnly: false})
)
).toEqual(golden);
});
it('roledescription', async () => {
const {page} = getTestState();
await page.setContent(
'<div tabIndex=-1 aria-roledescription="foo">Hi</div>'
);
const snapshot = await page.accessibility.snapshot();
// See https://chromium-review.googlesource.com/c/chromium/src/+/3088862
assert(snapshot);
assert(snapshot.children);
assert(snapshot.children[0]!);
expect(snapshot.children[0]!.roledescription).toBeUndefined();
});
it('orientation', async () => {
const {page} = getTestState();
await page.setContent(
'<a href="" role="slider" aria-orientation="vertical">11</a>'
);
const snapshot = await page.accessibility.snapshot();
assert(snapshot);
assert(snapshot.children);
assert(snapshot.children[0]!);
expect(snapshot.children[0]!.orientation).toEqual('vertical');
});
it('autocomplete', async () => {
const {page} = getTestState();
await page.setContent('<input type="number" aria-autocomplete="list" />');
const snapshot = await page.accessibility.snapshot();
assert(snapshot);
assert(snapshot.children);
assert(snapshot.children[0]!);
expect(snapshot.children[0]!.autocomplete).toEqual('list');
});
it('multiselectable', async () => {
const {page} = getTestState();
await page.setContent(
'<div role="grid" tabIndex=-1 aria-multiselectable=true>hey</div>'
);
const snapshot = await page.accessibility.snapshot();
assert(snapshot);
assert(snapshot.children);
assert(snapshot.children[0]!);
expect(snapshot.children[0]!.multiselectable).toEqual(true);
});
it('keyshortcuts', async () => {
const {page} = getTestState();
await page.setContent(
'<div role="grid" tabIndex=-1 aria-keyshortcuts="foo">hey</div>'
);
const snapshot = await page.accessibility.snapshot();
assert(snapshot);
assert(snapshot.children);
assert(snapshot.children[0]!);
expect(snapshot.children[0]!.keyshortcuts).toEqual('foo');
});
describe('filtering children of leaf nodes', function () {
it('should not report text nodes inside controls', async () => {
const {page, isFirefox} = getTestState();
await page.setContent(`
<div role="tablist">
<div role="tab" aria-selected="true"><b>Tab1</b></div>
<div role="tab">Tab2</div>
</div>`);
const golden = isFirefox
? {
role: 'document',
name: '',
children: [
{
role: 'pagetab',
name: 'Tab1',
selected: true,
},
{
role: 'pagetab',
name: 'Tab2',
},
],
}
: {
role: 'RootWebArea',
name: '',
children: [
{
role: 'tab',
name: 'Tab1',
selected: true,
},
{
role: 'tab',
name: 'Tab2',
},
],
};
expect(await page.accessibility.snapshot()).toEqual(golden);
});
it('rich text editable fields should have children', async () => {
const {page, isFirefox} = getTestState();
await page.setContent(`
<div contenteditable="true">
Edit this image: <img src="fakeimage.png" alt="my fake image">
</div>`);
const golden = isFirefox
? {
role: 'section',
name: '',
children: [
{
role: 'text leaf',
name: 'Edit this image: ',
},
{
role: 'StaticText',
name: 'my fake image',
},
],
}
: {
role: 'generic',
name: '',
value: 'Edit this image: ',
children: [
{
role: 'StaticText',
name: 'Edit this image:',
},
{
role: 'img',
name: 'my fake image',
},
],
};
const snapshot = await page.accessibility.snapshot();
assert(snapshot);
assert(snapshot.children);
expect(snapshot.children[0]!).toEqual(golden);
});
it('rich text editable fields with role should have children', async () => {
const {page, isFirefox} = getTestState();
await page.setContent(`
<div contenteditable="true" role='textbox'>
Edit this image: <img src="fakeimage.png" alt="my fake image">
</div>`);
// Image node should not be exposed in contenteditable elements. See https://crbug.com/1324392.
const golden = isFirefox
? {
role: 'entry',
name: '',
value: 'Edit this image: my fake image',
children: [
{
role: 'StaticText',
name: 'my fake image',
},
],
}
: {
role: 'textbox',
name: '',
value: 'Edit this image: ',
multiline: true,
children: [
{
role: 'StaticText',
name: 'Edit this image:',
},
],
};
const snapshot = await page.accessibility.snapshot();
assert(snapshot);
assert(snapshot.children);
expect(snapshot.children[0]!).toEqual(golden);
});
// Firefox does not support contenteditable="plaintext-only".
describeFailsFirefox('plaintext contenteditable', function () {
it('plain text field with role should not have children', async () => {
const {page} = getTestState();
await page.setContent(`
<div contenteditable="plaintext-only" role='textbox'>Edit this image:<img src="fakeimage.png" alt="my fake image"></div>`);
const snapshot = await page.accessibility.snapshot();
assert(snapshot);
assert(snapshot.children);
expect(snapshot.children[0]!).toEqual({
role: 'textbox',
name: '',
value: 'Edit this image:',
multiline: true,
});
});
});
it('non editable textbox with role and tabIndex and label should not have children', async () => {
const {page, isFirefox} = getTestState();
await page.setContent(`
<div role="textbox" tabIndex=0 aria-checked="true" aria-label="my favorite textbox">
this is the inner content
<img alt="yo" src="fakeimg.png">
</div>`);
const golden = isFirefox
? {
role: 'entry',
name: 'my favorite textbox',
value: 'this is the inner content yo',
}
: {
role: 'textbox',
name: 'my favorite textbox',
value: 'this is the inner content ',
};
const snapshot = await page.accessibility.snapshot();
assert(snapshot);
assert(snapshot.children);
expect(snapshot.children[0]!).toEqual(golden);
});
it('checkbox with and tabIndex and label should not have children', async () => {
const {page, isFirefox} = getTestState();
await page.setContent(`
<div role="checkbox" tabIndex=0 aria-checked="true" aria-label="my favorite checkbox">
this is the inner content
<img alt="yo" src="fakeimg.png">
</div>`);
const golden = isFirefox
? {
role: 'checkbutton',
name: 'my favorite checkbox',
checked: true,
}
: {
role: 'checkbox',
name: 'my favorite checkbox',
checked: true,
};
const snapshot = await page.accessibility.snapshot();
assert(snapshot);
assert(snapshot.children);
expect(snapshot.children[0]!).toEqual(golden);
});
it('checkbox without label should not have children', async () => {
const {page, isFirefox} = getTestState();
await page.setContent(`
<div role="checkbox" aria-checked="true">
this is the inner content
<img alt="yo" src="fakeimg.png">
</div>`);
const golden = isFirefox
? {
role: 'checkbutton',
name: 'this is the inner content yo',
checked: true,
}
: {
role: 'checkbox',
name: 'this is the inner content yo',
checked: true,
};
const snapshot = await page.accessibility.snapshot();
assert(snapshot);
assert(snapshot.children);
expect(snapshot.children[0]!).toEqual(golden);
});
describe('root option', function () {
it('should work a button', async () => {
const {page} = getTestState();
await page.setContent(`<button>My Button</button>`);
const button = (await page.$('button'))!;
expect(await page.accessibility.snapshot({root: button})).toEqual({
role: 'button',
name: 'My Button',
});
});
it('should work an input', async () => {
const {page} = getTestState();
await page.setContent(`<input title="My Input" value="My Value">`);
const input = (await page.$('input'))!;
expect(await page.accessibility.snapshot({root: input})).toEqual({
role: 'textbox',
name: 'My Input',
value: 'My Value',
});
});
it('should work a menu', async () => {
const {page} = getTestState();
await page.setContent(`
<div role="menu" title="My Menu">
<div role="menuitem">First Item</div>
<div role="menuitem">Second Item</div>
<div role="menuitem">Third Item</div>
</div>
`);
const menu = (await page.$('div[role="menu"]'))!;
expect(await page.accessibility.snapshot({root: menu})).toEqual({
role: 'menu',
name: 'My Menu',
children: [
{role: 'menuitem', name: 'First Item'},
{role: 'menuitem', name: 'Second Item'},
{role: 'menuitem', name: 'Third Item'},
],
orientation: 'vertical',
});
});
it('should return null when the element is no longer in DOM', async () => {
const {page} = getTestState();
await page.setContent(`<button>My Button</button>`);
const button = (await page.$('button'))!;
await page.$eval('button', button => {
return button.remove();
});
expect(await page.accessibility.snapshot({root: button})).toEqual(null);
});
it('should support the interestingOnly option', async () => {
const {page} = getTestState();
await page.setContent(`<div><button>My Button</button></div>`);
const div = (await page.$('div'))!;
expect(await page.accessibility.snapshot({root: div})).toEqual(null);
expect(
await page.accessibility.snapshot({
root: div,
interestingOnly: false,
})
).toEqual({
role: 'generic',
name: '',
children: [
{
role: 'button',
name: 'My Button',
children: [{role: 'StaticText', name: 'My Button'}],
},
],
});
});
});
});
function findFocusedNode(
node: SerializedAXNode | null
): SerializedAXNode | null {
if (node?.focused) {
return node;
}
for (const child of node?.children || []) {
const focusedChild = findFocusedNode(child);
if (focusedChild) {
return focusedChild;
}
}
return null;
}
});