Best JavaScript code snippet using playwright-internal
ReactFiberHooks.js
Source: ReactFiberHooks.js
...1207 },1208 useDebugValue<T>(value: T, formatterFn: ?(value: T) => mixed): void {1209 currentHookNameInDev = 'useDebugValue';1210 mountHookTypesDev();1211 return mountDebugValue(value, formatterFn);1212 },1213 };1214 HooksDispatcherOnMountWithHookTypesInDEV = {1215 readContext<T>(1216 context: ReactContext<T>,1217 observedBits: void | number | boolean,1218 ): T {1219 return readContext(context, observedBits);1220 },1221 useCallback<T>(callback: T, deps: Array<mixed> | void | null): T {1222 currentHookNameInDev = 'useCallback';1223 updateHookTypesDev();1224 return mountCallback(callback, deps);1225 },1226 useContext<T>(1227 context: ReactContext<T>,1228 observedBits: void | number | boolean,1229 ): T {1230 currentHookNameInDev = 'useContext';1231 updateHookTypesDev();1232 return readContext(context, observedBits);1233 },1234 useEffect(1235 create: () => (() => void) | void,1236 deps: Array<mixed> | void | null,1237 ): void {1238 currentHookNameInDev = 'useEffect';1239 updateHookTypesDev();1240 return mountEffect(create, deps);1241 },1242 useImperativeHandle<T>(1243 ref: {current: T | null} | ((inst: T | null) => mixed) | null | void,1244 create: () => T,1245 deps: Array<mixed> | void | null,1246 ): void {1247 currentHookNameInDev = 'useImperativeHandle';1248 updateHookTypesDev();1249 return mountImperativeHandle(ref, create, deps);1250 },1251 useLayoutEffect(1252 create: () => (() => void) | void,1253 deps: Array<mixed> | void | null,1254 ): void {1255 currentHookNameInDev = 'useLayoutEffect';1256 updateHookTypesDev();1257 return mountLayoutEffect(create, deps);1258 },1259 useMemo<T>(create: () => T, deps: Array<mixed> | void | null): T {1260 currentHookNameInDev = 'useMemo';1261 updateHookTypesDev();1262 const prevDispatcher = ReactCurrentDispatcher.current;1263 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;1264 try {1265 return mountMemo(create, deps);1266 } finally {1267 ReactCurrentDispatcher.current = prevDispatcher;1268 }1269 },1270 useReducer<S, I, A>(1271 reducer: (S, A) => S,1272 initialArg: I,1273 init?: I => S,1274 ): [S, Dispatch<A>] {1275 currentHookNameInDev = 'useReducer';1276 updateHookTypesDev();1277 const prevDispatcher = ReactCurrentDispatcher.current;1278 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;1279 try {1280 return mountReducer(reducer, initialArg, init);1281 } finally {1282 ReactCurrentDispatcher.current = prevDispatcher;1283 }1284 },1285 useRef<T>(initialValue: T): {current: T} {1286 currentHookNameInDev = 'useRef';1287 updateHookTypesDev();1288 return mountRef(initialValue);1289 },1290 useState<S>(1291 initialState: (() => S) | S,1292 ): [S, Dispatch<BasicStateAction<S>>] {1293 currentHookNameInDev = 'useState';1294 updateHookTypesDev();1295 const prevDispatcher = ReactCurrentDispatcher.current;1296 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;1297 try {1298 return mountState(initialState);1299 } finally {1300 ReactCurrentDispatcher.current = prevDispatcher;1301 }1302 },1303 useDebugValue<T>(value: T, formatterFn: ?(value: T) => mixed): void {1304 currentHookNameInDev = 'useDebugValue';1305 updateHookTypesDev();1306 return mountDebugValue(value, formatterFn);1307 },1308 };1309 HooksDispatcherOnUpdateInDEV = {1310 readContext<T>(1311 context: ReactContext<T>,1312 observedBits: void | number | boolean,1313 ): T {1314 return readContext(context, observedBits);1315 },1316 useCallback<T>(callback: T, deps: Array<mixed> | void | null): T {1317 currentHookNameInDev = 'useCallback';1318 updateHookTypesDev();1319 return updateCallback(callback, deps);1320 },1321 useContext<T>(1322 context: ReactContext<T>,1323 observedBits: void | number | boolean,1324 ): T {1325 currentHookNameInDev = 'useContext';1326 updateHookTypesDev();1327 return readContext(context, observedBits);1328 },1329 useEffect(1330 create: () => (() => void) | void,1331 deps: Array<mixed> | void | null,1332 ): void {1333 currentHookNameInDev = 'useEffect';1334 updateHookTypesDev();1335 return updateEffect(create, deps);1336 },1337 useImperativeHandle<T>(1338 ref: {current: T | null} | ((inst: T | null) => mixed) | null | void,1339 create: () => T,1340 deps: Array<mixed> | void | null,1341 ): void {1342 currentHookNameInDev = 'useImperativeHandle';1343 updateHookTypesDev();1344 return updateImperativeHandle(ref, create, deps);1345 },1346 useLayoutEffect(1347 create: () => (() => void) | void,1348 deps: Array<mixed> | void | null,1349 ): void {1350 currentHookNameInDev = 'useLayoutEffect';1351 updateHookTypesDev();1352 return updateLayoutEffect(create, deps);1353 },1354 useMemo<T>(create: () => T, deps: Array<mixed> | void | null): T {1355 currentHookNameInDev = 'useMemo';1356 updateHookTypesDev();1357 const prevDispatcher = ReactCurrentDispatcher.current;1358 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;1359 try {1360 return updateMemo(create, deps);1361 } finally {1362 ReactCurrentDispatcher.current = prevDispatcher;1363 }1364 },1365 useReducer<S, I, A>(1366 reducer: (S, A) => S,1367 initialArg: I,1368 init?: I => S,1369 ): [S, Dispatch<A>] {1370 currentHookNameInDev = 'useReducer';1371 updateHookTypesDev();1372 const prevDispatcher = ReactCurrentDispatcher.current;1373 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;1374 try {1375 return updateReducer(reducer, initialArg, init);1376 } finally {1377 ReactCurrentDispatcher.current = prevDispatcher;1378 }1379 },1380 useRef<T>(initialValue: T): {current: T} {1381 currentHookNameInDev = 'useRef';1382 updateHookTypesDev();1383 return updateRef(initialValue);1384 },1385 useState<S>(1386 initialState: (() => S) | S,1387 ): [S, Dispatch<BasicStateAction<S>>] {1388 currentHookNameInDev = 'useState';1389 updateHookTypesDev();1390 const prevDispatcher = ReactCurrentDispatcher.current;1391 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;1392 try {1393 return updateState(initialState);1394 } finally {1395 ReactCurrentDispatcher.current = prevDispatcher;1396 }1397 },1398 useDebugValue<T>(value: T, formatterFn: ?(value: T) => mixed): void {1399 currentHookNameInDev = 'useDebugValue';1400 updateHookTypesDev();1401 return updateDebugValue(value, formatterFn);1402 },1403 };1404 InvalidNestedHooksDispatcherOnMountInDEV = {1405 readContext<T>(1406 context: ReactContext<T>,1407 observedBits: void | number | boolean,1408 ): T {1409 warnInvalidContextAccess();1410 return readContext(context, observedBits);1411 },1412 useCallback<T>(callback: T, deps: Array<mixed> | void | null): T {1413 currentHookNameInDev = 'useCallback';1414 warnInvalidHookAccess();1415 mountHookTypesDev();1416 return mountCallback(callback, deps);1417 },1418 useContext<T>(1419 context: ReactContext<T>,1420 observedBits: void | number | boolean,1421 ): T {1422 currentHookNameInDev = 'useContext';1423 warnInvalidHookAccess();1424 mountHookTypesDev();1425 return readContext(context, observedBits);1426 },1427 useEffect(1428 create: () => (() => void) | void,1429 deps: Array<mixed> | void | null,1430 ): void {1431 currentHookNameInDev = 'useEffect';1432 warnInvalidHookAccess();1433 mountHookTypesDev();1434 return mountEffect(create, deps);1435 },1436 useImperativeHandle<T>(1437 ref: {current: T | null} | ((inst: T | null) => mixed) | null | void,1438 create: () => T,1439 deps: Array<mixed> | void | null,1440 ): void {1441 currentHookNameInDev = 'useImperativeHandle';1442 warnInvalidHookAccess();1443 mountHookTypesDev();1444 return mountImperativeHandle(ref, create, deps);1445 },1446 useLayoutEffect(1447 create: () => (() => void) | void,1448 deps: Array<mixed> | void | null,1449 ): void {1450 currentHookNameInDev = 'useLayoutEffect';1451 warnInvalidHookAccess();1452 mountHookTypesDev();1453 return mountLayoutEffect(create, deps);1454 },1455 useMemo<T>(create: () => T, deps: Array<mixed> | void | null): T {1456 currentHookNameInDev = 'useMemo';1457 warnInvalidHookAccess();1458 mountHookTypesDev();1459 const prevDispatcher = ReactCurrentDispatcher.current;1460 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;1461 try {1462 return mountMemo(create, deps);1463 } finally {1464 ReactCurrentDispatcher.current = prevDispatcher;1465 }1466 },1467 useReducer<S, I, A>(1468 reducer: (S, A) => S,1469 initialArg: I,1470 init?: I => S,1471 ): [S, Dispatch<A>] {1472 currentHookNameInDev = 'useReducer';1473 warnInvalidHookAccess();1474 mountHookTypesDev();1475 const prevDispatcher = ReactCurrentDispatcher.current;1476 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;1477 try {1478 return mountReducer(reducer, initialArg, init);1479 } finally {1480 ReactCurrentDispatcher.current = prevDispatcher;1481 }1482 },1483 useRef<T>(initialValue: T): {current: T} {1484 currentHookNameInDev = 'useRef';1485 warnInvalidHookAccess();1486 mountHookTypesDev();1487 return mountRef(initialValue);1488 },1489 useState<S>(1490 initialState: (() => S) | S,1491 ): [S, Dispatch<BasicStateAction<S>>] {1492 currentHookNameInDev = 'useState';1493 warnInvalidHookAccess();1494 mountHookTypesDev();1495 const prevDispatcher = ReactCurrentDispatcher.current;1496 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;1497 try {1498 return mountState(initialState);1499 } finally {1500 ReactCurrentDispatcher.current = prevDispatcher;1501 }1502 },1503 useDebugValue<T>(value: T, formatterFn: ?(value: T) => mixed): void {1504 currentHookNameInDev = 'useDebugValue';1505 warnInvalidHookAccess();1506 mountHookTypesDev();1507 return mountDebugValue(value, formatterFn);1508 },1509 };1510 InvalidNestedHooksDispatcherOnUpdateInDEV = {1511 readContext<T>(1512 context: ReactContext<T>,1513 observedBits: void | number | boolean,1514 ): T {1515 warnInvalidContextAccess();1516 return readContext(context, observedBits);1517 },1518 useCallback<T>(callback: T, deps: Array<mixed> | void | null): T {1519 currentHookNameInDev = 'useCallback';1520 warnInvalidHookAccess();1521 updateHookTypesDev();...
Using AI Code Generation
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 elementHandle = await page.$('body');7 await elementHandle._debugValue();8 await browser.close();9})();10{ type: 'object',11 objectId: '{"injectedScriptId":1,"id":2}' }
Using AI Code Generation
1const { mountDebugValue } = require('@playwright/test');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 const value = await page.$('text=Get started');8 mountDebugValue(value);9 await browser.close();10})();
Using AI Code Generation
1const { chromium } = require("playwright");2const { mountDebugValue } = require("playwright/lib/server/debugServer");3(async () => {4 const browser = await chromium.launch();5 const page = await browser.newPage();6 await page.waitForSelector("text=Get started");7 const element = await page.$("text=Get started");8 mountDebugValue(element, "element", "element");9 await browser.close();10})();
Using AI Code Generation
1const { mountDebugValue } = require('playwright/lib/server/debugSupport');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 await page.fill('input[name="q"]', 'Hello World');8 await page.click('input[name="btnK"]');9 await page.waitForSelector('h3');10 await page.screenshot({ path: 'test.png' });11 await browser.close();12})();
Using AI Code Generation
1const { mountDebugValue } = require('playwright/lib/server/debugSupport');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const page = await browser.newPage();6 await page.click('text=Get started');7 const element = await page.waitForSelector('text=Playwright');8 await mountDebugValue(element, 'element');9 await browser.close();10})();11const { test } = require('@playwright/test');12test('test', async ({ page }) => {13 await page.click('text=Get started');14 const element = await page.waitForSelector('text=Playwright');15 await element.debugValue();16});17const { mountDebugValue } = require('playwright/lib/server/debugSupport');18const { chromium } = require('playwright');19(async () => {20 const browser = await chromium.launch();21 const page = await browser.newPage();22 await page.click('text=Get started');23 const elements = await page.$$('text=Playwright');24 await mountDebugValue(elements[0], 'first element');25 await mountDebugValue(elements[1], 'second element');26 await browser.close();27})();28const { test } = require('@playwright/test');29test('test', async ({ page }) => {30 await page.click('text=Get started');31 const elements = await page.$$('text=Playwright');32 await elements[0].debugValue();33 await elements[1].debugValue();34});
Using AI Code Generation
1const { mountDebugValue } = require('@playwright/test/lib/server/debug');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 await page.screenshot({ path: 'example.png' });8 await page.evaluate(() => {9 mountDebugValue(document.querySelector('h1'), 'main-title');10 });11 await browser.close();12})();
Using AI Code Generation
1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch();4 const page = await browser.newPage();5 await page.type('#searchInput', 'Playwright');6 await page.keyboard.press('Enter');7 const elementHandle = await page.$('#firstHeading');8 await elementHandle._debugValue();9 await browser.close();10})();
Using AI Code Generation
1const { mountDebugValue } = require('@playwright/test/lib/server/debugServer');2const { chromium } = require('playwright');3const browser = await chromium.launch();4const page = await browser.newPage();5await mountDebugValue(browser, 'browser');6await mountDebugValue(page, 'page');7const { mountDebugValue } = require('@playwright/test/lib/server/debugServer');8const { chromium } = require('playwright');9const browser = await chromium.launch();10const page = await browser.newPage();11await mountDebugValue(browser, 'browser');12await mountDebugValue(page, 'page');13const { mountDebugValue } = require('@playwright/test/lib/server/debugServer');14const { chromium } = require('playwright');15const browser = await chromium.launch();16const page = await browser.newPage();17await mountDebugValue(browser, 'browser');18await mountDebugValue(page, 'page');19const { mountDebugValue } = require('@playwright/test/lib/server/debugServer');20const { chromium } = require('playwright');21const browser = await chromium.launch();22const page = await browser.newPage();23await mountDebugValue(browser, 'browser');24await mountDebugValue(page, 'page');25const { mountDebugValue } = require('@playwright/test/lib/server/debugServer');26const { chromium } = require('playwright');27const browser = await chromium.launch();28const page = await browser.newPage();29await mountDebugValue(browser, 'browser');30await mountDebugValue(page, 'page');31const { mountDebugValue } = require('@playwright/test/lib/server/debugServer');32const { chromium } = require('playwright');33const browser = await chromium.launch();34const page = await browser.newPage();35await mountDebugValue(browser, 'browser');36await mountDebugValue(page, 'page');37const { mountDebugValue } = require('@playwright/test/lib/server/debugServer');38const { chromium } = require('playwright');39const browser = await chromium.launch();40const page = await browser.newPage();41await mountDebugValue(browser, 'browser');
Using AI Code Generation
1const { mountDebugValue } = require('playwright-core/lib/server/debugSupport.js');2const { context } = require('playwright-core/lib/server/chromium.js');3const { mountDebugValue } = require('playwright-core/lib/server/debugSupport.js');4const { context } = require('playwright-core/lib/server/chromium.js');5const { mountDebugValue } = require('playwright-core/lib/server/debugSupport.js');6const { context } = require('playwright-core/lib/server/chromium.js');7const { mountDebugValue } = require('playwright-core/lib/server/debugSupport.js');8const { context } = require('playwright-core/lib/server/chromium.js');9const { mountDebugValue } = require('playwright-core/lib/server/debugSupport.js');10const { context } = require('playwright-core/lib/server/chromium.js');11const { mountDebugValue } = require('playwright-core/lib/server/debugSupport.js');12const { context } = require('playwright-core/lib/server/chromium.js');13const { mountDebugValue } = require('playwright-core/lib/server/debugSupport.js');14const { context } = require('playwright-core/lib/server/chromium.js');15const { mountDebugValue } = require('playwright-core/lib/server/debugSupport.js');16const { context } = require('playwright-core/lib/server/chromium.js');17const { mountDebugValue } = require('playwright-core/lib/server/debugSupport.js');18const { context } = require('playwright-core/lib/server/chromium.js');19const { mountDebugValue } = require('playwright-core/lib/server/debugSupport.js');20const { context } = require('playwright-core/lib/server/chromium.js');21const { mountDebugValue } = require('playwright-core/lib/server/debugSupport.js
Using AI Code Generation
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 title = await page.title();7 await page._internalApi().mountDebugValue(title);8 await browser.close();9})();10const { chromium } = require('playwright');11(async () => {12 const browser = await chromium.launch({ headless: false });13 const context = await browser.newContext();14 const page = await context.newPage();15 const title = await page.title();16 await page._internalApi().mountDebugValue(title, 'title');17 await browser.close();18})();
Jest + Playwright - Test callbacks of event-based DOM library
firefox browser does not start in playwright
Is it possible to get the selector from a locator object in playwright?
How to run a list of test suites in a single file concurrently in jest?
Running Playwright in Azure Function
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
})
Check out the latest blogs from LambdaTest on this topic:
Native apps are developed specifically for one platform. Hence they are fast and deliver superior performance. They can be downloaded from various app stores and are not accessible through browsers.
One of the essential parts when performing automated UI testing, whether using Selenium or another framework, is identifying the correct web elements the tests will interact with. However, if the web elements are not located correctly, you might get NoSuchElementException in Selenium. This would cause a false negative result because we won’t get to the actual functionality check. Instead, our test will fail simply because it failed to interact with the correct element.
Smartphones have changed the way humans interact with technology. Be it travel, fitness, lifestyle, video games, or even services, it’s all just a few touches away (quite literally so). We only need to look at the growing throngs of smartphone or tablet users vs. desktop users to grasp this reality.
As part of one of my consulting efforts, I worked with a mid-sized company that was looking to move toward a more agile manner of developing software. As with any shift in work style, there is some bewilderment and, for some, considerable anxiety. People are being challenged to leave their comfort zones and embrace a continuously changing, dynamic working environment. And, dare I say it, testing may be the most ‘disturbed’ of the software roles in agile development.
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.
Get 100 minutes of automation test minutes FREE!!