playwright/tests/page/wheel.spec.ts
2021-11-02 13:56:12 -07:00

128 lines
3.9 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 type { Page } from 'playwright-core';
import { test as it, expect } from './pageTest';
it.skip(({ isElectron, browserMajorVersion }) => {
// Old Electron has flaky wheel events.
return isElectron && browserMajorVersion <= 11;
});
it('should dispatch wheel events', async ({ page, server }) => {
await page.setContent(`<div style="width: 5000px; height: 5000px;"></div>`);
await page.mouse.move(50, 60);
await listenForWheelEvents(page, 'div');
await page.mouse.wheel(0, 100);
await page.waitForFunction('window.scrollY === 100');
expect(await page.evaluate('window.lastEvent')).toEqual({
deltaX: 0,
deltaY: 100,
clientX: 50,
clientY: 60,
deltaMode: 0,
ctrlKey: false,
shiftKey: false,
altKey: false,
metaKey: false,
});
});
it('should scroll when nobody is listening', async ({ page, server }) => {
await page.goto(server.PREFIX + '/input/scrollable.html');
await page.mouse.move(50, 60);
await page.mouse.wheel(0, 100);
await page.waitForFunction('window.scrollY === 100');
});
it('should set the modifiers', async ({ page }) => {
await page.setContent(`<div style="width: 5000px; height: 5000px;"></div>`);
await page.mouse.move(50, 60);
await listenForWheelEvents(page, 'div');
await page.keyboard.down('Shift');
await page.mouse.wheel(0, 100);
expect(await page.evaluate('window.lastEvent')).toEqual({
deltaX: 0,
deltaY: 100,
clientX: 50,
clientY: 60,
deltaMode: 0,
ctrlKey: false,
shiftKey: true,
altKey: false,
metaKey: false,
});
});
it('should scroll horizontally', async ({ page }) => {
await page.setContent(`<div style="width: 5000px; height: 5000px;"></div>`);
await page.mouse.move(50, 60);
await listenForWheelEvents(page, 'div');
await page.mouse.wheel(100, 0);
expect(await page.evaluate('window.lastEvent')).toEqual({
deltaX: 100,
deltaY: 0,
clientX: 50,
clientY: 60,
deltaMode: 0,
ctrlKey: false,
shiftKey: false,
altKey: false,
metaKey: false,
});
await page.waitForFunction('window.scrollX === 100');
});
it('should work when the event is canceled', async ({ page }) => {
await page.setContent(`<div style="width: 5000px; height: 5000px;"></div>`);
await page.mouse.move(50, 60);
await listenForWheelEvents(page, 'div');
await page.evaluate(() => {
document.querySelector('div').addEventListener('wheel', e => e.preventDefault());
});
await page.mouse.wheel(0, 100);
expect(await page.evaluate('window.lastEvent')).toEqual({
deltaX: 0,
deltaY: 100,
clientX: 50,
clientY: 60,
deltaMode: 0,
ctrlKey: false,
shiftKey: false,
altKey: false,
metaKey: false,
});
// give the page a chacne to scroll
await page.waitForTimeout(100);
// ensure that it did not.
expect(await page.evaluate('window.scrollY')).toBe(0);
});
async function listenForWheelEvents(page: Page, selector: string) {
await page.evaluate(selector => {
document.querySelector(selector).addEventListener('wheel', (e: WheelEvent) => {
window['lastEvent'] = {
deltaX: e.deltaX,
deltaY: e.deltaY,
clientX: e.clientX,
clientY: e.clientY,
deltaMode: e.deltaMode,
ctrlKey: e.ctrlKey,
shiftKey: e.shiftKey,
altKey: e.altKey,
metaKey: e.metaKey,
};
}, { passive: false });
}, selector);
}