mirror of
https://github.com/microsoft/playwright.git
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267 lines
9.0 KiB
TypeScript
267 lines
9.0 KiB
TypeScript
/**
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* Copyright 2018 Google Inc. All rights reserved.
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* Modifications copyright (c) Microsoft Corporation.
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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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import { test as it, expect } from './pageTest';
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it('should timeout', async ({page}) => {
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const startTime = Date.now();
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const timeout = 42;
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await page.waitForTimeout(timeout);
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expect(Date.now() - startTime).not.toBeLessThan(timeout / 2);
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});
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it('should accept a string', async ({page}) => {
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const watchdog = page.waitForFunction('window.__FOO === 1');
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await page.evaluate(() => window['__FOO'] = 1);
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await watchdog;
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});
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it('should work when resolved right before execution context disposal', async ({page}) => {
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await page.addInitScript(() => window['__RELOADED'] = true);
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await page.waitForFunction(() => {
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if (!window['__RELOADED'])
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window.location.reload();
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return true;
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});
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});
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it('should poll on interval', async ({page, server}) => {
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const polling = 100;
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const timeDelta = await page.waitForFunction(() => {
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if (!window['__startTime']) {
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window['__startTime'] = Date.now();
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return false;
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}
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return Date.now() - window['__startTime'];
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}, {}, {polling});
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expect(await timeDelta.jsonValue()).not.toBeLessThan(polling);
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});
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it('should avoid side effects after timeout', async ({page}) => {
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let counter = 0;
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page.on('console', () => ++counter);
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const error = await page.waitForFunction(() => {
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window['counter'] = (window['counter'] || 0) + 1;
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console.log(window['counter']);
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}, {}, { polling: 1, timeout: 1000 }).catch(e => e);
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const savedCounter = counter;
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await page.waitForTimeout(2000); // Give it some time to produce more logs.
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expect(error.message).toContain('page.waitForFunction: Timeout 1000ms exceeded');
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expect(counter).toBe(savedCounter);
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});
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it('should throw on polling:mutation', async ({page}) => {
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// @ts-expect-error mutation is not a valid polling strategy
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const error = await page.waitForFunction(() => true, {}, {polling: 'mutation'}).catch(e => e);
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expect(error.message).toContain('Unknown polling option: mutation');
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});
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it('should poll on raf', async ({page}) => {
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const watchdog = page.waitForFunction(() => window['__FOO'] === 'hit', {}, {polling: 'raf'});
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await page.evaluate(() => window['__FOO'] = 'hit');
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await watchdog;
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});
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it('should fail with predicate throwing on first call', async ({page}) => {
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const error = await page.waitForFunction(() => { throw new Error('oh my'); }).catch(e => e);
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expect(error.message).toContain('oh my');
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});
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it('should fail with predicate throwing sometimes', async ({page}) => {
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const error = await page.waitForFunction(() => {
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window['counter'] = (window['counter'] || 0) + 1;
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if (window['counter'] === 3)
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throw new Error('Bad counter!');
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return window['counter'] === 5 ? 'result' : false;
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}).catch(e => e);
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expect(error.message).toContain('Bad counter!');
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});
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it('should fail with ReferenceError on wrong page', async ({page}) => {
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// @ts-ignore
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const error = await page.waitForFunction(() => globalVar === 123).catch(e => e);
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expect(error.message).toContain('globalVar');
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});
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it('should work with strict CSP policy', async ({page, server}) => {
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server.setCSP('/empty.html', 'script-src ' + server.PREFIX);
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await page.goto(server.EMPTY_PAGE);
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let error = null;
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await Promise.all([
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page.waitForFunction(() => window['__FOO'] === 'hit', {}, {polling: 'raf'}).catch(e => error = e),
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page.evaluate(() => window['__FOO'] = 'hit')
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]);
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expect(error).toBe(null);
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});
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it('should throw on bad polling value', async ({page}) => {
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let error = null;
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try {
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// @ts-expect-error 'unknown' is not a valid polling strategy
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await page.waitForFunction(() => !!document.body, {}, {polling: 'unknown'});
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} catch (e) {
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error = e;
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}
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expect(error).toBeTruthy();
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expect(error.message).toContain('polling');
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});
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it('should throw negative polling interval', async ({page}) => {
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let error = null;
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try {
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await page.waitForFunction(() => !!document.body, {}, {polling: -10});
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} catch (e) {
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error = e;
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}
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expect(error).toBeTruthy();
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expect(error.message).toContain('Cannot poll with non-positive interval');
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});
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it('should return the success value as a JSHandle', async ({page}) => {
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expect(await (await page.waitForFunction(() => 5)).jsonValue()).toBe(5);
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});
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it('should return the window as a success value', async ({ page }) => {
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expect(await page.waitForFunction(() => window)).toBeTruthy();
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});
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it('should accept ElementHandle arguments', async ({page}) => {
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await page.setContent('<div></div>');
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const div = await page.$('div');
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let resolved = false;
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const waitForFunction = page.waitForFunction(element => !element.parentElement, div).then(() => resolved = true);
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expect(resolved).toBe(false);
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await page.evaluate(element => element.remove(), div);
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await waitForFunction;
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});
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it('should respect timeout', async ({page, playwright}) => {
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let error = null;
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await page.waitForFunction('false', {}, {timeout: 10}).catch(e => error = e);
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expect(error).toBeTruthy();
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expect(error.message).toContain('page.waitForFunction: Timeout 10ms exceeded');
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expect(error).toBeInstanceOf(playwright.errors.TimeoutError);
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});
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it('should respect default timeout', async ({page, playwright}) => {
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page.setDefaultTimeout(1);
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let error = null;
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await page.waitForFunction('false').catch(e => error = e);
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expect(error).toBeInstanceOf(playwright.errors.TimeoutError);
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expect(error.message).toContain('page.waitForFunction: Timeout 1ms exceeded');
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});
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it('should disable timeout when its set to 0', async ({page}) => {
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const watchdog = page.waitForFunction(() => {
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window['__counter'] = (window['__counter'] || 0) + 1;
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return window['__injected'];
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}, {}, {timeout: 0, polling: 10});
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await page.waitForFunction(() => window['__counter'] > 10);
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await page.evaluate(() => window['__injected'] = true);
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await watchdog;
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});
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it('should survive cross-process navigation', async ({page, server}) => {
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let fooFound = false;
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const waitForFunction = page.waitForFunction('window.__FOO === 1').then(() => fooFound = true);
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await page.goto(server.EMPTY_PAGE);
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expect(fooFound).toBe(false);
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await page.reload();
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expect(fooFound).toBe(false);
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await page.goto(server.CROSS_PROCESS_PREFIX + '/grid.html');
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expect(fooFound).toBe(false);
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await page.evaluate(() => window['__FOO'] = 1);
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await waitForFunction;
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expect(fooFound).toBe(true);
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});
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it('should survive navigations', async ({page, server}) => {
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const watchdog = page.waitForFunction(() => window['__done']);
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await page.goto(server.EMPTY_PAGE);
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await page.goto(server.PREFIX + '/consolelog.html');
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await page.evaluate(() => window['__done'] = true);
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await watchdog;
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});
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it('should work with multiline body', async ({page}) => {
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const result = await page.waitForFunction(`
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(() => true)()
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`);
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expect(await result.jsonValue()).toBe(true);
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});
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it('should wait for predicate with arguments', async ({page}) => {
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await page.waitForFunction(({arg1, arg2}) => arg1 + arg2 === 3, { arg1: 1, arg2: 2});
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});
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it('should not be called after finishing successfully', async ({page, server}) => {
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await page.goto(server.EMPTY_PAGE);
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const messages = [];
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page.on('console', msg => {
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if (msg.text().startsWith('waitForFunction'))
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messages.push(msg.text());
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});
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await page.waitForFunction(() => {
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console.log('waitForFunction1');
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return true;
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});
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await page.reload();
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await page.waitForFunction(() => {
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console.log('waitForFunction2');
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return true;
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});
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await page.reload();
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await page.waitForFunction(() => {
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console.log('waitForFunction3');
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return true;
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});
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expect(messages.join('|')).toBe('waitForFunction1|waitForFunction2|waitForFunction3');
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});
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it('should not be called after finishing unsuccessfully', async ({page, server}) => {
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await page.goto(server.EMPTY_PAGE);
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const messages = [];
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page.on('console', msg => {
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if (msg.text().startsWith('waitForFunction'))
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messages.push(msg.text());
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});
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await page.waitForFunction(() => {
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console.log('waitForFunction1');
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throw new Error('waitForFunction1');
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}).catch(e => null);
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await page.reload();
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await page.waitForFunction(() => {
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console.log('waitForFunction2');
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throw new Error('waitForFunction2');
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}).catch(e => null);
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await page.reload();
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await page.waitForFunction(() => {
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console.log('waitForFunction3');
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throw new Error('waitForFunction3');
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}).catch(e => null);
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expect(messages.join('|')).toBe('waitForFunction1|waitForFunction2|waitForFunction3');
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});
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