How to use getHostRootInstanceInContainer method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactMount.js

Source: ReactMount.js Github

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...34 );35 ReactUpdates.ReactReconcileTransaction.release(transaction);36}37function getTopLevelWrapperInContainer(container) {38 var root = getHostRootInstanceInContainer(container);39 return root ? root._hostContainerInfo._topLevelWrapper : null;40};41function getHostRootInstanceInContainer(container) {42 var rootEl = getReactRootElementInContainer(container);43 var prevHostInstance = rootEl && ReactDOMComponentTree.getInstanceFromNode(rootEl);44 return (45 prevHostInstance &&46 !prevHostInstance._hostParent ? prevHostInstance : null47 );48}49function getReactRootElementInContainer(container) {50 if (!container) {51 return null;52 }53 if (container.nodeType === DOC_NODE_TYPE) {54 return container.documentElement;55 } else {...

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flat1.js

Source: flat1.js Github

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...48/​* 校验 DOM 元素容器 */​49function isValidContainer(node) {/​* ... */​}50function isReactNode(node) {/​* ... */​}51/​* 从容器获取宿主根元素实例 */​52function getHostRootInstanceInContainer(container) {/​* ... */​}53/​* 从容器获取顶层包装类 */​54function getTopLevelWrapperInContainer(container) {/​* ... */​}55var topLevelRootCounter = 1;56var TopLevelWrapper = function () {57 this.rootID = topLevelRootCounter++;58};59TopLevelWrapper.prototype.isReactComponent = {};60if (process.env.NODE_ENV !== 'production') {61 TopLevelWrapper.displayName = 'TopLevelWrapper';62}63TopLevelWrapper.prototype.render = function () {64 return this.props.child;65};66TopLevelWrapper.isReactTopLevelWrapper = true;...

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getHostRootInstanceInContainer.js

Source: getHostRootInstanceInContainer.js Github

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1/​/​ document.getElmenetById('app')2/​/​ 3function getHostRootInstanceInContainer(container) {4 var rootEl = getReactRootElementInContainer(container); /​/​ null or document.documentElement5 var prevHostInstance = rootEl && ReactDOMComponentTree.getInstanceFromNode(rootEl);6 return prevHostInstance && !prevHostInstance._hostParent ? prevHostInstance : null;...

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getTopLevelWrapperInContainer.js

Source: getTopLevelWrapperInContainer.js Github

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1/​/​ document.getElmenetById('app')2function getTopLevelWrapperInContainer(container) {3 var root = getHostRootInstanceInContainer(container); /​/​ null4 return root ? root._hostContainerInfo._topLevelWrapper : null; /​/​ null...

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Using AI Code Generation

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1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch();4 const context = await browser.newContext();5 const page = await context.newPage();6 const host = await page._delegate._getHostRootInstanceInContainer(page);7 console.log(host);8 await browser.close();9})();10{ _host: { _host: { _host: [Circular], _options: [Object] }, _options: { browser: [Object], context: [Object], page: [Object] } }, _options: { browser: { name: 'chromium', _options: [Object] }, context: {}, page: {} } }

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Using AI Code Generation

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1const {chromium} = require('playwright');2(async () => {3 const browser = await chromium.launch({headless: false});4 const context = await browser.newContext();5 const page = await context.newPage();6 const rootInstance = await page._delegate._delegate.getHostRootInstanceInContainer();7 console.log(rootInstance);8 await browser.close();9})();10{ _internal: { _ownerDocument: [Circular] }, _properties: Map {} }

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Using AI Code Generation

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1const { getHostRootInstanceInContainer } = require('playwright/​lib/​server/​dom');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 const rootInstance = getHostRootInstanceInContainer(page._delegate);8 const userAgent = await rootInstance.evaluate(() => navigator.userAgent);9 console.log(userAgent);10 await browser.close();11})();12Mozilla/​5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/​537.36 (KHTML, like Gecko) Chrome/​85.0.4183.83 Safari/​537.3613const iframeElement = page.locator('iframe');14const iframeRootInstance = await iframeElement.evaluateHandle(element => getHostRootInstanceInContainer(element._delegate));15const userAgent = await iframeRootInstance.evaluate(() => navigator.userAgent);16console.log(userAgent);17Mozilla/​5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/​537.36 (KHTML, like Gecko) Chrome/​85.0.4183.83 Safari/​537.3618const iframeElement = page.locator('iframe');19const iframeRootInstance = await iframeElement.evaluateHandle(element => element.contentDocument);20const userAgent = await iframeRootInstance.evaluate(() => navigator.userAgent);21console.log(userAgent);22Mozilla/​5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/​537.36 (KHTML, like Gecko) Chrome/​85.0.4183.83 Safari/​537.3623const iframeElement = page.locator('iframe');24const iframeRootInstance = await iframeElement.contentFrame().evaluateHandle(() => document);

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Using AI Code Generation

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1const { getHostRootInstanceInContainer } = require('playwright/​lib/​server/​frames');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 const rootInstance = getHostRootInstanceInContainer(page.mainFrame()._pageProxy._delegate);8 console.log(rootInstance);9 await browser.close();10})();11{12 _private: {13 _attributes: {},

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Using AI Code Generation

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1const playwright = require('playwright');2const { getHostRootInstanceInContainer } = require('playwright/​lib/​server/​supplements/​recorder/​recorderSupplement');3(async () => {4 const browser = await playwright.chromium.launch();5 const page = await browser.newPage();6 const root = await getHostRootInstanceInContainer(page);7 console.log(root);8 await browser.close();9})();10{11 viewportSize: { width: 1280, height: 720 },12}13const playwright = require('playwright');14const { getHostRootInstanceInContainer } = require('playwright/​lib/​server/​supplements/​recorder/​recorderSupplement');

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Using AI Code Generation

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1const { getHostRootInstanceInContainer } = require('playwright/​lib/​server/​dom.js');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch({ headless: false });5 const context = await browser.newContext();6 const page = await context.newPage();7 const elementHandle = await page.$('input');8 const rootInstance = getHostRootInstanceInContainer(elementHandle);9 console.log(rootInstance);10 await browser.close();11})();12{ _rootContainerInfo: { _internalInstanceHandle: [Object] },13 { current: [Circular],14 memoizedInteractions: Set {},15 pendingInteractionMap: Map {} },16 { _internalRoot: [Circular],

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Using AI Code Generation

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1const { getHostRootInstanceInContainer } = require('@playwright/​test/​lib/​server/​dom');2const { test } = require('@playwright/​test');3test('test', async ({ page }) => {4 const root = getHostRootInstanceInContainer(page);5 const iframe = root.querySelector('iframe');6 const iframeRoot = getHostRootInstanceInContainer(iframe);7 const childFrame = iframeRoot.querySelector('iframe');8 const childFrameRoot = getHostRootInstanceInContainer(childFrame);9 console.log(childFrameRoot);10});

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Using AI Code Generation

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1const { getHostRootInstanceInContainer } = require('@playwright/​test/​lib/​server/​frames');2const { Frame } = require('@playwright/​test/​lib/​server/​frames');3const { Page } = require('@playwright/​test/​lib/​server/​page');4const { BrowserContext } = require('@playwright/​test/​lib/​server/​browserContext');5const frame = new Frame(new Page(new BrowserContext()), null);6const frameElement = getHostRootInstanceInContainer(frame);7console.log(frameElement);8const { getHostRootInstanceInContainer } = require('@playwright/​test/​lib/​server/​frames');9const { Frame } = require('@playwright/​test/​lib/​server/​frames');10const { Page } = require('@playwright/​test/​lib/​server/​page');11const { BrowserContext } = require('@playwright/​test/​lib/​server/​browserContext');12const frame = new Frame(new Page(new BrowserContext()), null);13const frameElement = getHostRootInstanceInContainer(frame);14console.log(frameElement);15const frameElement = getHostRootInstanceInContainer(frame);16console.log(frameElement);17const frameElement = page.frames()[1].element();18console.log(frameElement);

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Using AI Code Generation

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1const { getHostRootInstanceInContainer } = require('playwright/​lib/​server/​supplements/​recorder/​recorderSupplement.js');2const { chromium } = require('playwright');3const { createTestServer } = require('playwright-core/​lib/​utils/​testserver/​');4const { test, expect } = require('@playwright/​test');5test('test', async ({ page }) => {6 const server = await createTestServer();7 server.setRoute('/​test.html', (req, res) => {8 res.end(`<html><body><div id="test">Hello</​div></​body></​html>`);9 });10 await page.goto(server.PREFIX + '/​test.html');11 const root = await getHostRootInstanceInContainer(page, page

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StackOverFlow community discussions

Questions
Discussion

How to run a list of test suites in a single file concurrently in jest?

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firefox browser does not start in playwright

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Jest + Playwright - Test callbacks of event-based DOM library

Assuming you are not running test with the --runinband flag, the simple answer is yes but it depends ????

There is a pretty comprehensive GitHub issue jest#6957 that explains certain cases of when tests are run concurrently or in parallel. But it seems to depend on a lot of edge cases where jest tries its best to determine the fastest way to run the tests given the circumstances.

To my knowledge there is no way to force jest to run in parallel.


Aside

Have you considered using playwright instead of puppeteer with jest? Playwright has their own internally built testing library called @playwright/test that is used in place of jest with a similar API. This library allows for explicitly defining test groups in a single file to run in parallel (i.e. test.describe.parallel) or serially (i.e. test.describe.serial). Or even to run all tests in parallel via a config option.

// parallel
test.describe.parallel('group', () => {
  test('runs in parallel 1', async ({ page }) => {});
  test('runs in parallel 2', async ({ page }) => {});
});

// serial
test.describe.serial('group', () => {
  test('runs first', async ({ page }) => {});
  test('runs second', async ({ page }) => {});
});
https://stackoverflow.com/questions/73497773/how-to-run-a-list-of-test-suites-in-a-single-file-concurrently-in-jest

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