Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! Join TestMu Conference

How to use warnForUnmatchedText method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactDOMHostConfig.js

Source:ReactDOMHostConfig.js

...451  textInstance: TextInstance,452  text: string,453) {454  if (__DEV__) {455    warnForUnmatchedText(textInstance, text);456  }457}458export function didNotMatchHydratedTextInstance(459  parentType: string,460  parentProps: Props,461  parentInstance: Instance,462  textInstance: TextInstance,463  text: string,464) {465  if (__DEV__ && parentProps[SUPPRESS_HYDRATION_WARNING] !== true) {466    warnForUnmatchedText(textInstance, text);467  }468}469export function didNotHydrateContainerInstance(470  parentContainer: Container,471  instance: Instance | TextInstance,472) {473  if (__DEV__) {474    if (instance.nodeType === 1) {475      warnForDeletedHydratableElement(parentContainer, (instance: any));476    } else {477      warnForDeletedHydratableText(parentContainer, (instance: any));478    }479  }480}...

SSRHydrationDev.js

Source:SSRHydrationDev.js

...103    tag,104    parentNode.nodeName.toLowerCase(),105  );106}107function warnForUnmatchedText(textNode: Text, text: string) {108  warnForTextDifference(textNode.nodeValue, text);109}110function warnForDeletedHydratableElement(111  parentNode: Element | Document,112  child: Element,113) {114  if (didWarnInvalidHydration) {115    return;116  }117  didWarnInvalidHydration = true;118  warning(119    false,120    'Did not expect server HTML to contain a <%s> in <%s>.',121    child.nodeName.toLowerCase(),122    parentNode.nodeName.toLowerCase(),123  );124}125function warnForDeletedHydratableText(126  parentNode: Element | Document,127  child: Text,128) {129  if (didWarnInvalidHydration) {130    return;131  }132  didWarnInvalidHydration = true;133  warning(134    false,135    'Did not expect server HTML to contain the text node "%s" in <%s>.',136    child.nodeValue,137    parentNode.nodeName.toLowerCase(),138  );139}140function diffHydratedProperties(141  domElement: Element,142  tag: string,143  rawProps: Object,144  // parentNamespace: string,145  // rootContainerElement: Element | Document,146): null | Array<[string, any]> {147  // Track extra attributes so that we can warn later148  let extraAttributeNames: Set<string> = new Set();149  const attributes = domElement.attributes;150  for (let i = 0; i < attributes.length; i++) {151    const name = attributes[i].name.toLowerCase();152    switch (name) {153      // Built-in SSR attribute is whitelisted154      case 'data-reactroot':155        break;156      // Controlled attributes are not validated157      // TODO: Only ignore them on controlled tags.158      case 'value':159        break;160      case 'checked':161        break;162      case 'selected':163        break;164      default:165        // Intentionally use the original name.166        // See discussion in https://github.com/facebook/react/pull/10676.167        extraAttributeNames.add(attributes[i].name);168    }169  }170  let updatePayload = null;171  for (const propKey in rawProps) {172    if (!rawProps.hasOwnProperty(propKey)) {173      continue;174    }175    const nextProp = rawProps[propKey];176    let match;177    if (propKey === 'children') {178      // Explanation as seen upstream179      // For text content children we compare against textContent. This180      // might match additional HTML that is hidden when we read it using181      // textContent. E.g. "foo" will match "f<span>oo</span>" but that still182      // satisfies our requirement. Our requirement is not to produce perfect183      // HTML and attributes. Ideally we should preserve structure but it's184      // ok not to if the visible content is still enough to indicate what185      // even listeners these nodes might be wired up to.186      // TODO: Warn if there is more than a single textNode as a child.187      // TODO: Should we use domElement.firstChild.nodeValue to compare?188      if (typeof nextProp === 'string') {189        if (domElement.textContent !== nextProp) {190          warnForTextDifference(domElement.textContent, nextProp);191          updatePayload = [['children', nextProp]];192        }193      } else if (typeof nextProp === 'number') {194        if (domElement.textContent !== '' + nextProp) {195          warnForTextDifference(domElement.textContent, nextProp);196          updatePayload = [['children', '' + nextProp]];197        }198      }199    } else if ((match = propKey.match(isEventRegex))) {200      if (nextProp != null) {201        if (typeof nextProp !== 'function') {202          warnForInvalidEventListener(propKey, nextProp);203        }204        Events.listenTo(((domElement: any): Element), match[1], nextProp); // Attention!205      }206    }207    // TODO shouldIgnoreAttribute && shouldRemoveAttribute208  }209  // $FlowFixMe - Should be inferred as not undefined.210  if (extraAttributeNames.size > 0) {211    // $FlowFixMe - Should be inferred as not undefined.212    warnForExtraAttributes(extraAttributeNames);213  }214  return updatePayload;215}216function diffHydratedText(textNode: Text, text: string): boolean {217  const isDifferent = textNode.nodeValue !== text;218  return isDifferent;219}220export const SSRHydrationDev = {221  canHydrateInstance(instance: Element, type: string): null | Element {222    if (223      instance.nodeType !== ELEMENT_NODE ||224      type.toLowerCase() !== instance.nodeName.toLowerCase()225    ) {226      return null;227    }228    return instance;229  },230  canHydrateTextInstance(instance: Element, text: string): null | Text {231    if (text === '' || instance.nodeType !== TEXT_NODE) {232      // Empty strings are not parsed by HTML so there won't be a correct match here.233      return null;234    }235    return ((instance: any): Text);236  },237  getNextHydratableSibling(instance: Element | Text): null | Element {238    let node = instance.nextSibling;239    // Skip non-hydratable nodes.240    while (241      node &&242      node.nodeType !== ELEMENT_NODE &&243      node.nodeType !== TEXT_NODE244    ) {245      node = node.nextSibling;246    }247    return (node: any);248  },249  getFirstHydratableChild(250    parentInstance: DOMContainer | Element,251  ): null | Element {252    let next = parentInstance.firstChild;253    // Skip non-hydratable nodes.254    while (255      next &&256      next.nodeType !== ELEMENT_NODE &&257      next.nodeType !== TEXT_NODE258    ) {259      next = next.nextSibling;260    }261    return ((next: any): Element);262  },263  hydrateInstance(264    instance: Element,265    type: string,266    props: Props,267    rootContainerInstance: DOMContainer,268    hostContext: HostContext,269    internalInstanceHandle: OpaqueHandle,270  ): null | Array<[string, any]> {271    cacheHandleByInstance(instance, internalInstanceHandle);272    return diffHydratedProperties(273      instance,274      type,275      props,276      /* hostContext, */277      /* rootContainerInstance,*/278    );279  },280  hydrateTextInstance(281    textInstance: Text,282    text: string,283    internalInstanceHandle: OpaqueHandle,284  ): boolean {285    cacheHandleByInstance(286      ((textInstance: any): Element),287      internalInstanceHandle,288    );289    return diffHydratedText(textInstance, text);290  },291  didNotMatchHydratedContainerTextInstance(292    parentContainer: DOMContainer,293    textInstance: Text,294    text: string,295  ) {296    warnForUnmatchedText(textInstance, text);297  },298  didNotMatchHydratedTextInstance(299    parentType: string,300    parentProps: Props,301    parentInstance: Element,302    textInstance: Text,303    text: string,304  ) {305    warnForUnmatchedText(textInstance, text);306  },307  didNotHydrateContainerInstance(308    parentContainer: DOMContainer,309    instance: Element | Text,310  ) {311    if (instance.nodeType === 1) {312      warnForDeletedHydratableElement(parentContainer, (instance: any));313    } else {314      warnForDeletedHydratableText(parentContainer, (instance: any));315    }316  },317  didNotHydrateInstance(318    parentType: string,319    parentProps: Props,...

Using AI Code Generation

1const playwright = require('playwright');2(async () => {3  const browser = await playwright["chromium"].launch();4  const page = await browser.newPage();5  await page.type('input[name="q"]', 'Playwright');6  await page.keyboard.press('Enter');7  await page.waitForNavigation();8  const internalAPI = await page.context();9  await internalAPI.warnForUnmatchedText();10  await browser.close();11})();

Using AI Code Generation

1const playwright = require('playwright');2const { warnForUnmatchedText } = playwright._internal;3const browser = await playwright.chromium.launch();4const context = await browser.newContext();5const page = await context.newPage();6await page.fill('input[aria-label="Search"]', 'Playwright');7await warnForUnmatchedText(page, 'Google');8await browser.close();9  ✕ should pass (14ms)10      at warnForUnmatchedText (node_modules/playwright/lib/internal.js:77:11)11      at processTicksAndRejections (internal/process/task_queues.js:93:5)12      at async Object.<anonymous> (test.js:11:3)

Using AI Code Generation

1const { warnForUnmatchedText } = require('playwright/lib/internal/inspectorInstrumentation');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  warnForUnmatchedText(page, 'text to match');8  await page.close();9  await context.close();10  await browser.close();11})();

Using AI Code Generation

1const { chromium } = require('playwright');2const { warnForUnmatchedText } = require('playwright/lib/internal/inspector');3(async () => {4    const browser = await chromium.launch({ headless: false });5    const page = await browser.newPage();6    await page.screenshot({ path: 'example.png' });7    await browser.close();8})();9const { warnForUnmatchedText } = require('playwright/lib/internal/inspector');10const { warnForUnmatchedText } = require('playwright/lib/internal/inspector');11const { warnForUnmatchedText } = require('playwright/lib/internal/inspector');12const { warnForUnmatchedText } = require('playwright/lib/internal/inspector');13const { warnForUnmatchedText } = require('playwright/lib/internal/inspector');14const { warnForUnmatchedText } = require('playwright/lib/internal/inspector');15const { warnForUnmatchedText } = require('playwright/lib/internal/inspector');16const { warnForUnmatchedText } = require('playwright/lib/internal/inspector');

Using AI Code Generation

1const { test, expect } = require('@playwright/test');2test('test', async ({ page }) => {3  await page.click('text=Get started');4  await expect(page).toHaveText('Playwright is a Node.js library to automate Chromium, Firefox and WebKit with a single API');5});6test.use({ warnForUnmatchedText: true });

Using AI Code Generation

1const { warnForUnmatchedText } = require('playwright/lib/utils/stackTrace');2const { test } = require('@playwright/test');3test('test', async ({ page }) => {4  warnForUnmatchedText(page, 'text', 'selector');5});6    at BrowserType._wrapApiCall (C:\Users\username\playwright\playwright\lib\server\browserType.js:122:15)7    at BrowserType.warnForUnmatchedText (C:\Users\username\playwright\playwright\lib\server\browserType.js:139:25)8    at warnForUnmatchedText (C:\Users\username\playwright\playwright\lib\utils\stackTrace.js:9:25)9    at Object.<anonymous> (C:\Users\username\playwright\test.js:10:3)10    at Module._compile (internal/modules/cjs/loader.js:1137:30)11    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1157:10)12    at Module.load (internal/modules/cjs/loader.js:985:32)13    at Function.Module._load (internal/modules/cjs/loader.js:878:14)14    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)15const { warnForUnmatchedText } = require('playwright/lib/utils/

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.