playwright/tests/library/role-utils.spec.ts
2023-06-08 16:00:48 -07:00

312 lines
14 KiB
TypeScript

/**
* Copyright (c) Microsoft Corporation.
*
* 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 { contextTest as test, expect } from '../config/browserTest';
import type { Page } from 'playwright-core';
import fs from 'fs';
test.skip(({ mode }) => mode !== 'default');
async function getNameAndRole(page: Page, selector: string) {
return await page.$eval(selector, e => {
const name = (window as any).__injectedScript.getElementAccessibleName(e);
const role = (window as any).__injectedScript.getAriaRole(e);
return { name, role };
});
}
const ranges = [
'name_test_case_539-manual.html',
'name_test_case_721-manual.html',
];
for (let range = 0; range <= ranges.length; range++) {
test('wpt accname #' + range, async ({ page, asset, server, browserName }) => {
const skipped = [
// Spec clearly says to only use control's value when embedded in a label (step 2C).
'name_heading-combobox-focusable-alternative-manual.html',
// This test expects ::before + title + ::after, which is neither 2F nor 2I.
'name_test_case_659-manual.html',
// This test expects ::before + title + ::after, which is neither 2F nor 2I.
'name_test_case_660-manual.html',
];
if (browserName === 'firefox') {
// This test contains the following style:
// [data-after]:after { content: attr(data-after); }
// In firefox, content is returned as "attr(data-after)"
// instead of being resolved to the actual value.
skipped.push('name_test_case_553-manual.html');
}
await page.addInitScript(() => {
const self = window as any;
self.setup = () => {};
self.ATTAcomm = class {
constructor(data) {
self.steps = [];
for (const step of data.steps) {
if (!step.test.ATK)
continue;
for (const atk of step.test.ATK) {
if (atk[0] !== 'property' || atk[1] !== 'name' || atk[2] !== 'is' || typeof atk[3] !== 'string')
continue;
self.steps.push({ selector: '#' + step.element, name: atk[3] });
}
}
}
};
});
const testDir = asset('wpt/accname');
const testFiles = fs.readdirSync(testDir, { withFileTypes: true }).filter(e => e.isFile() && e.name.endsWith('.html')).map(e => e.name);
for (const testFile of testFiles) {
if (skipped.includes(testFile))
continue;
const included = (range === 0 || testFile >= ranges[range - 1]) && (range === ranges.length || testFile < ranges[range]);
if (!included)
continue;
await test.step(testFile, async () => {
await page.goto(server.PREFIX + `/wpt/accname/` + testFile);
// Use $eval to force injected script.
const result = await page.$eval('body', () => {
const result = [];
for (const step of (window as any).steps) {
const element = document.querySelector(step.selector);
if (!element)
throw new Error(`Unable to resolve "${step.selector}"`);
const received = (window as any).__injectedScript.getElementAccessibleName(element);
result.push({ selector: step.selector, expected: step.name, received });
}
return result;
});
for (const { selector, expected, received } of result)
expect.soft(received, `checking "${selector}" in ${testFile}`).toBe(expected);
});
}
});
}
test('axe-core implicit-role', async ({ page, asset, server }) => {
await page.goto(server.EMPTY_PAGE);
const testCases = require(asset('axe-core/implicit-role'));
for (const testCase of testCases) {
await test.step(`checking ${JSON.stringify(testCase)}`, async () => {
await page.setContent(`
<body>
${testCase.html}
</body>
`);
// Use $eval to force injected script.
const received = await page.$eval('body', (_, selector) => {
const element = document.querySelector(selector);
if (!element)
throw new Error(`Unable to resolve "${selector}"`);
return (window as any).__injectedScript.getAriaRole(element);
}, testCase.target);
expect.soft(received, `checking ${JSON.stringify(testCase)}`).toBe(testCase.role);
});
}
});
test('axe-core accessible-text', async ({ page, asset, server }) => {
await page.goto(server.EMPTY_PAGE);
const testCases = require(asset('axe-core/accessible-text'));
for (const testCase of testCases) {
await test.step(`checking ${JSON.stringify(testCase)}`, async () => {
await page.setContent(`
<body>
${testCase.html}
</body>
<script>
for (const template of document.querySelectorAll("template[shadow]")) {
const shadowRoot = template.parentElement.attachShadow({ mode: 'open' });
shadowRoot.appendChild(template.content);
template.remove();
}
</script>
`);
// Use $eval to force injected script.
const targets = toArray(testCase.target);
const expected = toArray(testCase.accessibleText);
const received = await page.$eval('body', (_, selectors) => {
return selectors.map(selector => {
const injected = (window as any).__injectedScript;
const element = injected.querySelector(injected.parseSelector('css=' + selector), document, false);
if (!element)
throw new Error(`Unable to resolve "${selector}"`);
return injected.getElementAccessibleName(element);
});
}, targets);
expect.soft(received, `checking ${JSON.stringify(testCase)}`).toEqual(expected);
});
}
});
test('accessible name with slots', async ({ page }) => {
// Text "foo" is assigned to the slot, should not be used twice.
await page.setContent(`
<button><div>foo</div></button>
<script>
(() => {
const container = document.querySelector('div');
const shadow = container.attachShadow({ mode: 'open' });
const slot = document.createElement('slot');
shadow.appendChild(slot);
})();
</script>
`);
expect.soft(await getNameAndRole(page, 'button')).toEqual({ role: 'button', name: 'foo' });
// Text "foo" is assigned to the slot, should be used instead of slot content.
await page.setContent(`
<div>foo</div>
<script>
(() => {
const container = document.querySelector('div');
const shadow = container.attachShadow({ mode: 'open' });
const button = document.createElement('button');
shadow.appendChild(button);
const slot = document.createElement('slot');
button.appendChild(slot);
const span = document.createElement('span');
span.textContent = 'pre';
slot.appendChild(span);
})();
</script>
`);
expect.soft(await getNameAndRole(page, 'button')).toEqual({ role: 'button', name: 'foo' });
// Nothing is assigned to the slot, should use slot content.
await page.setContent(`
<div></div>
<script>
(() => {
const container = document.querySelector('div');
const shadow = container.attachShadow({ mode: 'open' });
const button = document.createElement('button');
shadow.appendChild(button);
const slot = document.createElement('slot');
button.appendChild(slot);
const span = document.createElement('span');
span.textContent = 'pre';
slot.appendChild(span);
})();
</script>
`);
expect.soft(await getNameAndRole(page, 'button')).toEqual({ role: 'button', name: 'pre' });
});
test('accessible name nested treeitem', async ({ page }) => {
await page.setContent(`
<div role=treeitem id=target>
<span>Top-level</span>
<div role=group>
<div role=treeitem><span>Nested 1</span></div>
<div role=treeitem><span>Nested 2</span></div>
</div>
</div>
`);
expect.soft(await getNameAndRole(page, '#target')).toEqual({ role: 'treeitem', name: 'Top-level' });
});
test('svg title', async ({ page }) => {
await page.setContent(`
<div>
<svg width="162" height="30" viewBox="0 0 162 30" fill="none" xmlns="http://www.w3.org/2000/svg">
<title>Submit</title>
<g>
<title>Hello</title>
</g>
<a href="example.com" xlink:title="a link"><circle cx="50" cy="40" r="35" /></a>
</svg>
</div>
`);
expect.soft(await getNameAndRole(page, 'svg')).toEqual({ role: 'img', name: 'Submit' });
expect.soft(await getNameAndRole(page, 'g')).toEqual({ role: null, name: 'Hello' });
expect.soft(await getNameAndRole(page, 'a')).toEqual({ role: 'link', name: 'a link' });
});
test('native controls', async ({ page }) => {
await page.setContent(`
<label for="text1">TEXT1</label><input id="text1" type=text>
<input id="text2" type=text title="TEXT2">
<input id="text3" type=text placeholder="TEXT3">
<label for="image1">IMAGE1</label><input id="image1" type=image>
<input id="image2" type=image alt="IMAGE2">
<label for="image3">IMAGE3</label><input id="image3" type=image alt="MORE3">
<label for="button1">BUTTON1</label><button id="button1" role="combobox">button</button>
<button id="button2" role="combobox">BUTTON2</button>
<button id="button3">BUTTON3</button>
<button id="button4" title="BUTTON4"></button>
`);
expect.soft(await getNameAndRole(page, '#text1')).toEqual({ role: 'textbox', name: 'TEXT1' });
expect.soft(await getNameAndRole(page, '#text2')).toEqual({ role: 'textbox', name: 'TEXT2' });
expect.soft(await getNameAndRole(page, '#text3')).toEqual({ role: 'textbox', name: 'TEXT3' });
expect.soft(await getNameAndRole(page, '#image1')).toEqual({ role: 'button', name: 'IMAGE1' });
expect.soft(await getNameAndRole(page, '#image2')).toEqual({ role: 'button', name: 'IMAGE2' });
expect.soft(await getNameAndRole(page, '#image3')).toEqual({ role: 'button', name: 'IMAGE3' });
expect.soft(await getNameAndRole(page, '#button1')).toEqual({ role: 'combobox', name: 'BUTTON1' });
expect.soft(await getNameAndRole(page, '#button2')).toEqual({ role: 'combobox', name: '' });
expect.soft(await getNameAndRole(page, '#button3')).toEqual({ role: 'button', name: 'BUTTON3' });
expect.soft(await getNameAndRole(page, '#button4')).toEqual({ role: 'button', name: 'BUTTON4' });
});
test('native controls labelled-by', async ({ page }) => {
await page.setContent(`
<label id="for-text1">TEXT1</label><input aria-labelledby="for-text1" id="text1" type=text>
<label id="for-text2">TEXT2</label><input aria-labelledby="for-text2 text2" id="text2" type=text>
<label id="for-text3" for="text3">TEXT3</label><input aria-labelledby="for-text3 text3" id="text3" type=text>
<label id="for-submit1" for="submit1">SUBMIT1</label><input aria-labelledby="for-submit1 submit1" id="submit1" type=submit>
<label id="for-image1" for="image1">IMAGE1</label><input aria-labelledby="for-image1 image1" id="image1" type=image alt="MORE1">
<label id="for-image2" for="image2">IMAGE2</label><img aria-labelledby="for-image2 image2" id="image2" alt="MORE2" src="data:image/svg,<g></g>">
<label id="for-button1">BUTTON1</label><button aria-labelledby="for-button1" id="button1">MORE1</button>
<label id="for-button2">BUTTON2</label><button aria-labelledby="for-button2 button2" id="button2">MORE2</button>
<label id="for-button3" for="button3">BUTTON3</label><button aria-labelledby="for-button3 button3" id="button3">MORE3</button>
<label id="for-button4" for="button4">BUTTON4</label><button aria-labelledby="for-button4" id="button4">MORE4</button>
<label id="for-textarea1" for="textarea1">TEXTAREA1</label><textarea aria-labelledby="for-textarea1 textarea1" id="textarea1" placeholder="MORE1">MORE2</textarea>
`);
expect.soft(await getNameAndRole(page, '#text1')).toEqual({ role: 'textbox', name: 'TEXT1' });
expect.soft(await getNameAndRole(page, '#text2')).toEqual({ role: 'textbox', name: 'TEXT2' });
expect.soft(await getNameAndRole(page, '#text3')).toEqual({ role: 'textbox', name: 'TEXT3' });
expect.soft(await getNameAndRole(page, '#submit1')).toEqual({ role: 'button', name: 'SUBMIT1 Submit' });
expect.soft(await getNameAndRole(page, '#image1')).toEqual({ role: 'button', name: 'IMAGE1 MORE1' });
expect.soft(await getNameAndRole(page, '#image2')).toEqual({ role: 'img', name: 'IMAGE2 MORE2' });
expect.soft(await getNameAndRole(page, '#button1')).toEqual({ role: 'button', name: 'BUTTON1' });
expect.soft(await getNameAndRole(page, '#button2')).toEqual({ role: 'button', name: 'BUTTON2 MORE2' });
expect.soft(await getNameAndRole(page, '#button3')).toEqual({ role: 'button', name: 'BUTTON3 MORE3' });
expect.soft(await getNameAndRole(page, '#button4')).toEqual({ role: 'button', name: 'BUTTON4' });
expect.soft(await getNameAndRole(page, '#textarea1')).toEqual({ role: 'textbox', name: 'TEXTAREA1 MORE2' });
});
test('display:contents should be visible when contents are visible', async ({ page }) => {
await page.setContent(`
<button style='display: contents;'>yo</button>
`);
await expect(page.getByRole('button')).toHaveCount(1);
});
function toArray(x: any): any[] {
return Array.isArray(x) ? x : [x];
}