puppeteer/test/elementhandle.spec.ts
Jack Franklin f1a6b8d66d
chore: vendor Mitt & update project structure (#6209)
* chore: vendor Mitt into src/common/third-party

As discussed in #6203 we need to vendor our common dependencies in so
that when we ship an ESM build all imports point to file paths and do
not rely on Node resolution (e.g. a browser does not understand `import
mitt from 'mitt'`).
2020-07-14 16:57:29 +01:00

410 lines
14 KiB
TypeScript

/**
* 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 expect from 'expect';
import {
getTestState,
setupTestBrowserHooks,
setupTestPageAndContextHooks,
describeFailsFirefox,
itFailsFirefox,
} from './mocha-utils'; // eslint-disable-line import/extensions
import utils from './utils.js';
import { ElementHandle } from '../lib/cjs/puppeteer/common/JSHandle.js';
describe('ElementHandle specs', function () {
setupTestBrowserHooks();
setupTestPageAndContextHooks();
describeFailsFirefox('ElementHandle.boundingBox', function () {
it('should work', async () => {
const { page, server } = getTestState();
await page.setViewport({ width: 500, height: 500 });
await page.goto(server.PREFIX + '/grid.html');
const elementHandle = await page.$('.box:nth-of-type(13)');
const box = await elementHandle.boundingBox();
expect(box).toEqual({ x: 100, y: 50, width: 50, height: 50 });
});
it('should handle nested frames', async () => {
const { page, server, isChrome } = getTestState();
await page.setViewport({ width: 500, height: 500 });
await page.goto(server.PREFIX + '/frames/nested-frames.html');
const nestedFrame = page.frames()[1].childFrames()[1];
const elementHandle = await nestedFrame.$('div');
const box = await elementHandle.boundingBox();
if (isChrome)
expect(box).toEqual({ x: 28, y: 260, width: 264, height: 18 });
else expect(box).toEqual({ x: 28, y: 182, width: 254, height: 18 });
});
it('should return null for invisible elements', async () => {
const { page } = getTestState();
await page.setContent('<div style="display:none">hi</div>');
const element = await page.$('div');
expect(await element.boundingBox()).toBe(null);
});
it('should force a layout', async () => {
const { page } = getTestState();
await page.setViewport({ width: 500, height: 500 });
await page.setContent(
'<div style="width: 100px; height: 100px">hello</div>'
);
const elementHandle = await page.$('div');
await page.evaluate<(element: HTMLElement) => void>(
(element) => (element.style.height = '200px'),
elementHandle
);
const box = await elementHandle.boundingBox();
expect(box).toEqual({ x: 8, y: 8, width: 100, height: 200 });
});
it('should work with SVG nodes', async () => {
const { page } = getTestState();
await page.setContent(`
<svg xmlns="http://www.w3.org/2000/svg" width="500" height="500">
<rect id="theRect" x="30" y="50" width="200" height="300"></rect>
</svg>
`);
const element = await page.$('#therect');
const pptrBoundingBox = await element.boundingBox();
const webBoundingBox = await page.evaluate((e: HTMLElement) => {
const rect = e.getBoundingClientRect();
return { x: rect.x, y: rect.y, width: rect.width, height: rect.height };
}, element);
expect(pptrBoundingBox).toEqual(webBoundingBox);
});
});
describeFailsFirefox('ElementHandle.boxModel', function () {
it('should work', async () => {
const { page, server } = getTestState();
await page.goto(server.PREFIX + '/resetcss.html');
// Step 1: Add Frame and position it absolutely.
await utils.attachFrame(page, 'frame1', server.PREFIX + '/resetcss.html');
await page.evaluate(() => {
const frame = document.querySelector<HTMLElement>('#frame1');
frame.style.position = 'absolute';
frame.style.left = '1px';
frame.style.top = '2px';
});
// Step 2: Add div and position it absolutely inside frame.
const frame = page.frames()[1];
const divHandle = (
await frame.evaluateHandle(() => {
const div = document.createElement('div');
document.body.appendChild(div);
div.style.boxSizing = 'border-box';
div.style.position = 'absolute';
div.style.borderLeft = '1px solid black';
div.style.paddingLeft = '2px';
div.style.marginLeft = '3px';
div.style.left = '4px';
div.style.top = '5px';
div.style.width = '6px';
div.style.height = '7px';
return div;
})
).asElement();
// Step 3: query div's boxModel and assert box values.
const box = await divHandle.boxModel();
expect(box.width).toBe(6);
expect(box.height).toBe(7);
expect(box.margin[0]).toEqual({
x: 1 + 4, // frame.left + div.left
y: 2 + 5,
});
expect(box.border[0]).toEqual({
x: 1 + 4 + 3, // frame.left + div.left + div.margin-left
y: 2 + 5,
});
expect(box.padding[0]).toEqual({
x: 1 + 4 + 3 + 1, // frame.left + div.left + div.marginLeft + div.borderLeft
y: 2 + 5,
});
expect(box.content[0]).toEqual({
x: 1 + 4 + 3 + 1 + 2, // frame.left + div.left + div.marginLeft + div.borderLeft + dif.paddingLeft
y: 2 + 5,
});
});
it('should return null for invisible elements', async () => {
const { page } = getTestState();
await page.setContent('<div style="display:none">hi</div>');
const element = await page.$('div');
expect(await element.boxModel()).toBe(null);
});
});
describe('ElementHandle.contentFrame', function () {
itFailsFirefox('should work', async () => {
const { page, server } = getTestState();
await page.goto(server.EMPTY_PAGE);
await utils.attachFrame(page, 'frame1', server.EMPTY_PAGE);
const elementHandle = await page.$('#frame1');
const frame = await elementHandle.contentFrame();
expect(frame).toBe(page.frames()[1]);
});
});
describe('ElementHandle.click', function () {
it('should work', async () => {
const { page, server } = getTestState();
await page.goto(server.PREFIX + '/input/button.html');
const button = await page.$('button');
await button.click();
expect(await page.evaluate(() => globalThis.result)).toBe('Clicked');
});
it('should work for Shadow DOM v1', async () => {
const { page, server } = getTestState();
await page.goto(server.PREFIX + '/shadow.html');
const buttonHandle = await page.evaluateHandle<ElementHandle>(
// @ts-expect-error button is expected to be in the page's scope.
() => button
);
await buttonHandle.click();
expect(
await page.evaluate(
// @ts-expect-error clicked is expected to be in the page's scope.
() => clicked
)
).toBe(true);
});
it('should work for TextNodes', async () => {
const { page, server } = getTestState();
await page.goto(server.PREFIX + '/input/button.html');
const buttonTextNode = await page.evaluateHandle(
() => document.querySelector('button').firstChild
);
let error = null;
// @ts-expect-error
await buttonTextNode.click().catch((error_) => (error = error_));
expect(error.message).toBe('Node is not of type HTMLElement');
});
it('should throw for detached nodes', async () => {
const { page, server } = getTestState();
await page.goto(server.PREFIX + '/input/button.html');
const button = await page.$('button');
await page.evaluate((button: HTMLElement) => button.remove(), button);
let error = null;
await button.click().catch((error_) => (error = error_));
expect(error.message).toBe('Node is detached from document');
});
it('should throw for hidden nodes', async () => {
const { page, server } = getTestState();
await page.goto(server.PREFIX + '/input/button.html');
const button = await page.$('button');
await page.evaluate(
(button: HTMLElement) => (button.style.display = 'none'),
button
);
const error = await button.click().catch((error_) => error_);
expect(error.message).toBe(
'Node is either not visible or not an HTMLElement'
);
});
it('should throw for recursively hidden nodes', async () => {
const { page, server } = getTestState();
await page.goto(server.PREFIX + '/input/button.html');
const button = await page.$('button');
await page.evaluate(
(button: HTMLElement) => (button.parentElement.style.display = 'none'),
button
);
const error = await button.click().catch((error_) => error_);
expect(error.message).toBe(
'Node is either not visible or not an HTMLElement'
);
});
it('should throw for <br> elements', async () => {
const { page } = getTestState();
await page.setContent('hello<br>goodbye');
const br = await page.$('br');
const error = await br.click().catch((error_) => error_);
expect(error.message).toBe(
'Node is either not visible or not an HTMLElement'
);
});
});
describe('ElementHandle.hover', function () {
itFailsFirefox('should work', async () => {
const { page, server } = getTestState();
await page.goto(server.PREFIX + '/input/scrollable.html');
const button = await page.$('#button-6');
await button.hover();
expect(
await page.evaluate(() => document.querySelector('button:hover').id)
).toBe('button-6');
});
});
describe('ElementHandle.isIntersectingViewport', function () {
it('should work', async () => {
const { page, server } = getTestState();
await page.goto(server.PREFIX + '/offscreenbuttons.html');
for (let i = 0; i < 11; ++i) {
const button = await page.$('#btn' + i);
// All but last button are visible.
const visible = i < 10;
expect(await button.isIntersectingViewport()).toBe(visible);
}
});
});
describe('Custom queries', function () {
this.afterEach(() => {
const { puppeteer } = getTestState();
puppeteer.__experimental_clearQueryHandlers();
});
it('should register and unregister', async () => {
const { page, puppeteer } = getTestState();
await page.setContent('<div id="not-foo"></div><div id="foo"></div>');
// Register.
puppeteer.__experimental_registerCustomQueryHandler(
'getById',
(element, selector) => document.querySelector(`[id="${selector}"]`)
);
const element = await page.$('getById/foo');
expect(
await page.evaluate<(element: HTMLElement) => string>(
(element) => element.id,
element
)
).toBe('foo');
// Unregister.
puppeteer.__experimental_unregisterCustomQueryHandler('getById');
try {
await page.$('getById/foo');
throw new Error('Custom query handler name not set - throw expected');
} catch (error) {
expect(error).toStrictEqual(
new Error(
'Query set to use "getById", but no query handler of that name was found'
)
);
}
});
it('should throw with invalid query names', () => {
try {
const { puppeteer } = getTestState();
puppeteer.__experimental_registerCustomQueryHandler(
'1/2/3',
// @ts-expect-error
() => {}
);
throw new Error(
'Custom query handler name was invalid - throw expected'
);
} catch (error) {
expect(error).toStrictEqual(
new Error('Custom query handler names may only contain [a-zA-Z]')
);
}
});
it('should work for multiple elements', async () => {
const { page, puppeteer } = getTestState();
await page.setContent(
'<div id="not-foo"></div><div class="foo">Foo1</div><div class="foo baz">Foo2</div>'
);
puppeteer.__experimental_registerCustomQueryHandler(
'getByClass',
(element, selector) => document.querySelectorAll(`.${selector}`)
);
const elements = await page.$$('getByClass/foo');
const classNames = await Promise.all(
elements.map(
async (element) =>
await page.evaluate<(element: HTMLElement) => string>(
(element) => element.className,
element
)
)
);
expect(classNames).toStrictEqual(['foo', 'foo baz']);
});
it('should eval correctly', async () => {
const { page, puppeteer } = getTestState();
await page.setContent(
'<div id="not-foo"></div><div class="foo">Foo1</div><div class="foo baz">Foo2</div>'
);
puppeteer.__experimental_registerCustomQueryHandler(
'getByClass',
(element, selector) => document.querySelectorAll(`.${selector}`)
);
const elements = await page.$$eval(
'getByClass/foo',
(divs) => divs.length
);
expect(elements).toBe(2);
});
it('should wait correctly with waitForSelector', async () => {
const { page, puppeteer } = getTestState();
puppeteer.__experimental_registerCustomQueryHandler(
'getByClass',
(element, selector) => element.querySelector(`.${selector}`)
);
const waitFor = page.waitForSelector('getByClass/foo');
// Set the page content after the waitFor has been started.
await page.setContent(
'<div id="not-foo"></div><div class="foo">Foo1</div>'
);
const element = await waitFor;
expect(element).toBeDefined();
});
it('should wait correctly with waitFor', async () => {
const { page, puppeteer } = getTestState();
puppeteer.__experimental_registerCustomQueryHandler(
'getByClass',
(element, selector) => element.querySelector(`.${selector}`)
);
const waitFor = page.waitFor('getByClass/foo');
// Set the page content after the waitFor has been started.
await page.setContent(
'<div id="not-foo"></div><div class="foo">Foo1</div>'
);
const element = await waitFor;
expect(element).toBeDefined();
});
});
});