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How to use checkReactTypeSpec method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactFiberContext.js

...45  }46  if (__DEV__) {47    const name = getComponentName(fiber);48    const debugID = 0; // TODO: pass a real ID49    checkReactTypeSpec(contextTypes, context, 'context', name, null, debugID);50  }51  return context;52};53exports.hasContextChanged = function() : boolean {54  return index > -1 && didPerformWorkStack[index];55};56function isContextProvider(fiber : Fiber) : boolean {57  return (58    fiber.tag === ClassComponent &&59    typeof fiber.stateNode.getChildContext === 'function'60  );61}62exports.isContextProvider = isContextProvider;63exports.popContextProvider = function() : void {64  contextStack[index] = emptyObject;65  didPerformWorkStack[index] = false;66  index--;67};68exports.pushTopLevelContextObject = function(context : Object, didChange : boolean) : void {69  invariant(index === -1, 'Unexpected context found on stack');70  index++;71  contextStack[index] = context;72  didPerformWorkStack[index] = didChange;73};74function processChildContext(fiber : Fiber, parentContext : Object): Object {75  const instance = fiber.stateNode;76  const childContextTypes = fiber.type.childContextTypes;77  const childContext = instance.getChildContext();78  for (let contextKey in childContext) {79    invariant(80      contextKey in childContextTypes,81      '%s.getChildContext(): key "%s" is not defined in childContextTypes.',82      getComponentName(fiber),83      contextKey84    );85  }86  if (__DEV__) {87    const name = getComponentName(fiber);88    const debugID = 0; // TODO: pass a real ID89    checkReactTypeSpec(childContextTypes, childContext, 'childContext', name, null, debugID);90  }91  return {...parentContext, ...childContext};92}93exports.processChildContext = processChildContext;94exports.pushContextProvider = function(fiber : Fiber, didPerformWork : boolean) : void {95  const instance = fiber.stateNode;96  const memoizedMergedChildContext = instance.__reactInternalMemoizedMergedChildContext;97  const canReuseMergedChildContext = !didPerformWork && memoizedMergedChildContext != null;98  let mergedContext = null;99  if (canReuseMergedChildContext) {100    mergedContext = memoizedMergedChildContext;101  } else {102    mergedContext = processChildContext(fiber, getUnmaskedContext());103    instance.__reactInternalMemoizedMergedChildContext = mergedContext;...

patchTypeSpec.js

Source: patchTypeSpec.js

1const Module = require('module');2const original = require('react/lib/checkReactTypeSpec');3const assertPropTypes = require('check-prop-types').assertPropTypes;4let isPatched = false;5function wrapped(specs, values, location, componentName, element, debugId) {6  return isPatched7    ? assertPropTypes(specs, values, location, componentName)8    : original(specs, values, location, componentName, element, debugId);9}10Module.prototype.require = function patchedRequire(path) {11  if (path.endsWith('/checkReactTypeSpec') ||12      path.endsWith('/checkReactTypeSpec.js')) {13    return wrapped;14  }15  return Module._load(path, this);  // eslint-disable-line no-underscore-dangle16}17function patch() {18  isPatched = true;19  return unpatch;20}21function unpatch() {22  isPatched = false;23  return patch;24}25patch.isPatched = unpatch.isPatched = function() {26  return isPatched;27};...

checkReactTypeSpec.js

Source: checkReactTypeSpec.js

...10 */11'use strict';12var checkPropTypes = require('react/lib/checkPropTypes');13var { getStackAddendum } = require('react/lib/ReactDebugCurrentFrame');14function checkReactTypeSpec(15  typeSpecs,16  values,17  location: string,18  componentName19) {20  checkPropTypes(21    typeSpecs,22    values,23    location,24    componentName,25    getStackAddendum26  );27}28module.exports = checkReactTypeSpec;

bb2e1ccheckReactTypeSpec.js

Source: bb2e1ccheckReactTypeSpec.js

1'use strict';2var checkPropTypes = require('react/lib/checkPropTypes');3var _require = require('react/lib/ReactDebugCurrentFrame'),4    getStackAddendum = _require.getStackAddendum;5function checkReactTypeSpec(typeSpecs, values, location, componentName) {6  checkPropTypes(typeSpecs, values, location, componentName, getStackAddendum);7}...

484f39checkReactTypeSpec.js

Source: 484f39checkReactTypeSpec.js

1'use strict';2var checkPropTypes = require('./checkPropTypes');3var _require = require('./ReactDebugCurrentFrame'),4    getStackAddendum = _require.getStackAddendum;5function checkReactTypeSpec(typeSpecs, values, location, componentName) {6  checkPropTypes(typeSpecs, values, location, componentName, getStackAddendum);7}...

1191cccheckReactTypeSpec.js

Source: 1191cccheckReactTypeSpec.js

1'use strict';2var checkPropTypes = require('./checkPropTypes');3var _require = require('./ReactDebugCurrentFrame'),4    getStackAddendum = _require.getStackAddendum;5function checkReactTypeSpec(typeSpecs, values, location, componentName) {6  checkPropTypes(typeSpecs, values, location, componentName, getStackAddendum);7}...

Using AI Code Generation

1const { checkReactTypeSpec } = require('playwright/lib/internal/inspector');2const { checkReactTypeSpec } = require('playwright/lib/internal/inspector');3const { checkReactTypeSpec } = require('playwright/lib/internal/inspector');4const { checkReactTypeSpec } = require('playwright/lib/internal/inspector');5const { checkReactTypeSpec } = require('playwright/lib/internal/inspector');6const { checkReactTypeSpec } = require('playwright/lib/internal/inspector');7const { checkReactTypeSpec } = require('playwright/lib/internal/inspector');8const { checkReactTypeSpec } = require('playwright/lib/internal/inspector');9const { checkReactTypeSpec } = require('playwright/lib/internal/inspector');10const { checkReactTypeSpec } = require('playwright/lib/internal/inspector');11const { checkReactTypeSpec } = require('playwright/lib/internal/inspector');12const { checkReactTypeSpec } = require('playwright/lib/internal/inspector');13const { checkReactTypeSpec } = require('playwright/lib/internal/inspector');14const { checkReactTypeSpec } = require('playwright/lib/internal/inspector');15const { checkReactTypeSpec } = require('playwright/lib/internal/inspector');16const {

Using AI Code Generation

1const { checkReactTypeSpec } = require('@playwright/test/lib/server/frames');2const { Page } = require('@playwright/test/lib/server/page');3const { Frame } = require('@playwright/test/lib/server/frames');4const { checkReactTypeSpec } = require('@playwright/test/lib/server/frames');5const { Page } = require('@playwright/test/lib/server/page');6const { Frame } = require('@playwright/test/lib/server/frames');7const { checkReactTypeSpec } = require('@playwright/test/lib/server/frames');8const { Page } = require('@playwright/test/lib/server/page');9const { Frame } = require('@playwright/test/lib/server/frames');10const { checkReactTypeSpec } = require('@playwright/test/lib/server/frames');11const { Page } = require('@playwright/test/lib/server/page');12const { Frame } = require('@playwright/test/lib/server/frames');13const { checkReactTypeSpec } = require('@playwright/test/lib/server/frames');14const { Page } = require('@playwright/test/lib/server/page');15const { Frame } = require('@playwright/test/lib/server/frames');16const { checkReactTypeSpec } = require('@playwright/test/lib/server/frames');17const { Page } = require('@playwright/test/lib/server/page');18const { Frame } = require('@playwright/test/lib/server/frames');19const { checkReactTypeSpec } = require('@playwright/test/lib/server/frames');20const { Page } = require('@playwright/test/lib/server/page');21const { Frame } = require('@playwright/test/lib/server/frames');22const { checkReactTypeSpec } = require('@playwright/test/lib/server/frames');23const { Page } = require('@playwright/test/lib/server/page');24const { Frame } = require('@playwright/test/lib/server/frames');

Using AI Code Generation

1const { checkReactTypeSpec } = require('@playwright/test/lib/server/reactUtils');2const { test } = require('@playwright/test');3test('test', async ({ page }) => {4  await checkReactTypeSpec(page, 'div');5});6const { checkReactTypeSpec } = require('@playwright/test/lib/server/reactUtils');7const { test } = require('@playwright/test');8test('test', async ({ page }) => {9  await checkReactTypeSpec(page, 'div');10});

Using AI Code Generation

1const { checkReactTypeSpec } = require('@playwright/test/lib/reactTypeCheck');2const { ReactTypeSpec } = require('@playwright/test/lib/types');3const { Page } = require('@playwright/test/lib/page');4const { ElementHandle } = require('@playwright/test/lib/elementHandler');5const spec = new ReactTypeSpec({6  props: {7  },8});9const page = new Page();10const elementHandle = new ElementHandle();11checkReactTypeSpec(page, elementHandle, spec);12const { test, expect } = require('@playwright/test');13test('react fixture', async ({ react }) => {14  await react.render(MyComponent, { name: 'John' });15  const text = await react.findByText('Hello John');16  expect(text).toBeTruthy();17});18- `findByText(text: string): Promise<ElementHandle>`19- `findAllByText(text: string): Promise<ElementHandle[]>`20- `findByTestId(id: string): Promise<ElementHandle>`21- `findAllByTestId(id: string): Promise<ElementHandle[]>`22- `findByRole(role: string): Promise<ElementHandle>`23- `findAllByRole(role: string): Promise<ElementHandle[]>`24- `findByPlaceholderText(text: string): Promise<ElementHandle>`25- `findAllByPlaceholderText(text: string): Promise<ElementHandle[]>`26- `findByLabelText(text: string): Promise<ElementHandle>`27- `findAllByLabelText(text: string): Promise<ElementHandle[]>`28- `findByDisplayValue(value: string): Promise<ElementHandle>`29- `findAllByDisplayValue(value: string): Promise<ElementHandle[]>`

Using AI Code Generation

1const { checkReactTypeSpec } = require('playwright-core/lib/server/supplements/reactUtils');2const { ReactTypeSpecs } = require('playwright-core/lib/server/supplements/types');3async function main() {4  const specs = new ReactTypeSpecs();5  specs.addType('MyType', {6      {7      },8      {9      },10  });11  const result = checkReactTypeSpec(specs, {12      {13      },14      {15      },16  });17  console.log(result);18}19main();20const { checkReactTypeSpec } = require('playwright-core/lib/server/supplements/reactUtils');21const { ReactTypeSpecs } = require('playwright-core/lib/server/supplements/types');22async function main() {23  const specs = new ReactTypeSpecs();24  specs.addType('MyType', {25      {26      },27      {28      },29  });30  const result = checkReactTypeSpec(specs, {31      {32      },33      {34      },35  });36  console.log(result);37}38main();

Using AI Code Generation

1const { checkReactTypeSpec } = require("playwright");2const { expect } = require("chai");3describe("React Test", () => {4  it("Should check React type spec", async () => {5    const result = await checkReactTypeSpec({6      props: {},7        {8          props: {},9        },10        {11          props: {},12        },13    });14    expect(result).to.be.true;15  });16});

Using AI Code Generation

1const { checkReactTypeSpec } = require('playwright-core/lib/server/chromium/crProtocolHelper.js');2const spec = {3  properties: {4    foo: {5    },6    bar: {7    },8  },9};10const value = {11};12const { valid, errors } = checkReactTypeSpec(spec, value);13console.log(valid, errors);14const { checkReactTypeSpec } = require('playwright-core/lib/server/chromium/crProtocolHelper.js');15const spec = {16  properties: {17    foo: {18    },19    bar: {20    },21  },22};23const value = {24};25const { valid, errors } = checkReactTypeSpec(spec, value);26console.log(valid, errors);27const { checkReactTypeSpec } = require('playwright-core/lib/server/chromium/crProtocolHelper.js');28const spec = {29  properties: {30    foo: {31    },32    bar: {33    },34  },35};36const value = {37};38const { valid, errors } = checkReactTypeSpec(spec, value);39console.log(valid, errors);40const { checkReactTypeSpec } = require('playwright-core/lib/server/chromium/crProtocolHelper.js');41const spec = {

Using AI Code Generation

1const { checkReactTypeSpec } = require('playwright');2const { ReactSpec } = require('./ReactSpec');3const { ReactSpec } = require('./ReactSpec');4const { checkReactTypeSpec } = require('playwright');5const { ReactSpec } = require('./ReactSpec');6const { ReactSpec } = require('./ReactSpec');7I have tried to import it like this:8import { checkReactTypeSpec } from “playwright”;9Could not find a declaration file for module ‘playwright’. ‘/Users/…/node_modules/playwright/index.js’ implicitly has an ‘any’ type.   Try `npm install @types/playwright` if it exists or add a new declaration (.d.ts) file containing `declare module ‘playwright’;`10I have tried to import it like this:11import * as playwright from “playwright”;12Could not find a declaration file for module ‘playwright’. ‘/Users/…/node_modules/playwright/index.js’ implicitly has an ‘any’ type.   Try `npm install @types/playwright` if it exists or add a new declaration (.d.ts) file containing `declare module ‘playwright’;`13I have tried to import it like this:14import { checkReactTypeSpec } from “playwright”;15I have tried to import

StackOverFlow community discussions

Questions

Discussion

Is it possible to get the selector from a locator object in playwright?

firefox browser does not start in playwright

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

firefox browser does not start in playwright

Running Playwright in Azure Function

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

Well this is one way, but not sure if it will work for all possible locators!.

// Get a selector from a playwright locator
import { Locator } from "@playwright/test";
export function extractSelector(locator: Locator) {
    const selector = locator.toString();
    const parts = selector.split("@");
    if (parts.length !== 2) { throw Error("extractSelector: susupect that this is not a locator"); }
    if (parts[0] !== "Locator") { throw Error("extractSelector: did not find locator"); }
    return parts[1];
}

https://stackoverflow.com/questions/72044959/is-it-possible-to-get-the-selector-from-a-locator-object-in-playwright

I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/firefox-browser-does-not-start-in-playwright

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

I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/firefox-browser-does-not-start-in-playwright

This question is quite close to a "need more focus" question. But let's try to give it some focus:

Does Playwright has access to the cPicker object on the page? Does it has access to the window object?

Yes, you can access both cPicker and the window object inside an evaluate call.

Should I trigger the events from the HTML file itself, and in the callbacks, print in the DOM the result, in some dummy-element, and then infer from that dummy element text that the callbacks fired?

Exactly, or you can assign values to a javascript variable:

const cPicker = new ColorPicker({
  onClickOutside(e){
  },
  onInput(color){
    window['color'] = color;
  },
  onChange(color){
    window['result'] = color;
  }
})

And then

it('Should call all callbacks with correct arguments', async() => {
    await page.goto(`http://localhost:5000/tests/visual/basic.html`, {waitUntil:'load'})

    // Wait until the next frame
    await page.evaluate(() => new Promise(requestAnimationFrame))

    // Act
   
    // Assert
    const result = await page.evaluate(() => window['color']);
    // Check the value
})

https://stackoverflow.com/questions/65477895/jest-playwright-test-callbacks-of-event-based-dom-library

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Playwright tutorial

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Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
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