How to use shouldSuspend method in Playwright Internal
Best JavaScript code snippet using playwright-internal
ReactSuspensePlaceholder-test.internal.js
Source:ReactSuspensePlaceholder-test.internal.js 
1/**2 * Copyright (c) 2013-present, Facebook, Inc.3 *4 * This source code is licensed under the MIT license found in the5 * LICENSE file in the root directory of this source tree.6 *7 * @emails react-core8 * @jest-environment node9 */10// TODO: This does nothing since it was migrated from noop renderer to test11// renderer! Switch back to noop renderer, or add persistent mode to test12// renderer, or merge the two renderers into one somehow.13// runPlaceholderTests('ReactSuspensePlaceholder (mutation)', () =>14// require('react-noop-renderer'),15// );16runPlaceholderTests('ReactSuspensePlaceholder (persistence)', () =>17 require('react-noop-renderer/persistent'),18);19function runPlaceholderTests(suiteLabel, loadReactNoop) {20 let advanceTimeBy;21 let mockNow;22 let Profiler;23 let React;24 let ReactTestRenderer;25 let ReactFeatureFlags;26 let ReactCache;27 let Suspense;28 let TextResource;29 let textResourceShouldFail;30 describe(suiteLabel, () => {31 beforeEach(() => {32 jest.resetModules();33 let currentTime = 0;34 mockNow = jest.fn().mockImplementation(() => currentTime);35 global.Date.now = mockNow;36 advanceTimeBy = amount => {37 currentTime += amount;38 };39 ReactFeatureFlags = require('shared/ReactFeatureFlags');40 ReactFeatureFlags.debugRenderPhaseSideEffectsForStrictMode = false;41 ReactFeatureFlags.enableProfilerTimer = true;42 ReactFeatureFlags.replayFailedUnitOfWorkWithInvokeGuardedCallback = false;43 React = require('react');44 ReactTestRenderer = require('react-test-renderer');45 ReactTestRenderer.unstable_setNowImplementation(mockNow);46 ReactCache = require('react-cache');47 Profiler = React.unstable_Profiler;48 Suspense = React.Suspense;49 TextResource = ReactCache.unstable_createResource(([text, ms = 0]) => {50 let listeners = null;51 let status = 'pending';52 let value = null;53 return {54 then(resolve, reject) {55 switch (status) {56 case 'pending': {57 if (listeners === null) {58 listeners = [{resolve, reject}];59 setTimeout(() => {60 if (textResourceShouldFail) {61 ReactTestRenderer.unstable_yield(62 `Promise rejected [${text}]`,63 );64 status = 'rejected';65 value = new Error('Failed to load: ' + text);66 listeners.forEach(listener => listener.reject(value));67 } else {68 ReactTestRenderer.unstable_yield(69 `Promise resolved [${text}]`,70 );71 status = 'resolved';72 value = text;73 listeners.forEach(listener => listener.resolve(value));74 }75 }, ms);76 } else {77 listeners.push({resolve, reject});78 }79 break;80 }81 case 'resolved': {82 resolve(value);83 break;84 }85 case 'rejected': {86 reject(value);87 break;88 }89 }90 },91 };92 }, ([text, ms]) => text);93 textResourceShouldFail = false;94 });95 function Text({fakeRenderDuration = 0, text = 'Text'}) {96 advanceTimeBy(fakeRenderDuration);97 ReactTestRenderer.unstable_yield(text);98 return text;99 }100 function AsyncText({fakeRenderDuration = 0, ms, text}) {101 advanceTimeBy(fakeRenderDuration);102 try {103 TextResource.read([text, ms]);104 ReactTestRenderer.unstable_yield(text);105 return text;106 } catch (promise) {107 if (typeof promise.then === 'function') {108 ReactTestRenderer.unstable_yield(`Suspend! [${text}]`);109 } else {110 ReactTestRenderer.unstable_yield(`Error! [${text}]`);111 }112 throw promise;113 }114 }115 it('times out children that are already hidden', () => {116 class HiddenText extends React.PureComponent {117 render() {118 const text = this.props.text;119 ReactTestRenderer.unstable_yield(text);120 return <span hidden={true}>{text}</span>;121 }122 }123 function App(props) {124 return (125 <Suspense maxDuration={500} fallback={<Text text="Loading..." />}>126 <HiddenText text="A" />127 <span>128 <AsyncText ms={1000} text={props.middleText} />129 </span>130 <span>131 <Text text="C" />132 </span>133 </Suspense>134 );135 }136 // Initial mount137 const root = ReactTestRenderer.create(<App middleText="B" />, {138 unstable_isConcurrent: true,139 });140 expect(root).toFlushAndYield(['A', 'Suspend! [B]', 'C', 'Loading...']);141 expect(root).toMatchRenderedOutput(null);142 jest.advanceTimersByTime(1000);143 expect(ReactTestRenderer).toHaveYielded(['Promise resolved [B]']);144 expect(root).toFlushAndYield(['A', 'B', 'C']);145 expect(root).toMatchRenderedOutput(146 <React.Fragment>147 <span hidden={true}>A</span>148 <span>B</span>149 <span>C</span>150 </React.Fragment>,151 );152 // Update153 root.update(<App middleText="B2" />);154 expect(root).toFlushAndYield(['Suspend! [B2]', 'C', 'Loading...']);155 // Time out the update156 jest.advanceTimersByTime(750);157 expect(root).toFlushAndYield([]);158 expect(root).toMatchRenderedOutput('Loading...');159 // Resolve the promise160 jest.advanceTimersByTime(1000);161 expect(ReactTestRenderer).toHaveYielded(['Promise resolved [B2]']);162 expect(root).toFlushAndYield(['B2', 'C']);163 // Render the final update. A should still be hidden, because it was164 // given a `hidden` prop.165 expect(root).toMatchRenderedOutput(166 <React.Fragment>167 <span hidden={true}>A</span>168 <span>B2</span>169 <span>C</span>170 </React.Fragment>,171 );172 });173 it('times out text nodes', async () => {174 function App(props) {175 return (176 <Suspense maxDuration={500} fallback={<Text text="Loading..." />}>177 <Text text="A" />178 <AsyncText ms={1000} text={props.middleText} />179 <Text text="C" />180 </Suspense>181 );182 }183 // Initial mount184 const root = ReactTestRenderer.create(<App middleText="B" />, {185 unstable_isConcurrent: true,186 });187 expect(root).toFlushAndYield(['A', 'Suspend! [B]', 'C', 'Loading...']);188 expect(root).toMatchRenderedOutput(null);189 jest.advanceTimersByTime(1000);190 expect(ReactTestRenderer).toHaveYielded(['Promise resolved [B]']);191 expect(root).toFlushAndYield(['A', 'B', 'C']);192 expect(root).toMatchRenderedOutput('ABC');193 // Update194 root.update(<App middleText="B2" />);195 expect(root).toFlushAndYield(['A', 'Suspend! [B2]', 'C', 'Loading...']);196 // Time out the update197 jest.advanceTimersByTime(750);198 expect(root).toFlushAndYield([]);199 expect(root).toMatchRenderedOutput('Loading...');200 // Resolve the promise201 jest.advanceTimersByTime(1000);202 expect(ReactTestRenderer).toHaveYielded(['Promise resolved [B2]']);203 expect(root).toFlushAndYield(['A', 'B2', 'C']);204 // Render the final update. A should still be hidden, because it was205 // given a `hidden` prop.206 expect(root).toMatchRenderedOutput('AB2C');207 });208 describe('profiler durations', () => {209 let App;210 let onRender;211 beforeEach(() => {212 // Order of parameters: id, phase, actualDuration, treeBaseDuration213 onRender = jest.fn();214 const Fallback = () => {215 ReactTestRenderer.unstable_yield('Fallback');216 advanceTimeBy(10);217 return 'Loading...';218 };219 const Suspending = () => {220 ReactTestRenderer.unstable_yield('Suspending');221 advanceTimeBy(2);222 return <AsyncText ms={1000} text="Loaded" fakeRenderDuration={1} />;223 };224 App = ({shouldSuspend, text = 'Text', textRenderDuration = 5}) => {225 ReactTestRenderer.unstable_yield('App');226 return (227 <Profiler id="root" onRender={onRender}>228 <Suspense maxDuration={500} fallback={<Fallback />}>229 {shouldSuspend && <Suspending />}230 <Text fakeRenderDuration={textRenderDuration} text={text} />231 </Suspense>232 </Profiler>233 );234 };235 });236 describe('when suspending during mount', () => {237 it('properly accounts for base durations when a suspended times out in a sync tree', () => {238 const root = ReactTestRenderer.create(<App shouldSuspend={true} />);239 expect(root.toJSON()).toEqual('Loading...');240 expect(onRender).toHaveBeenCalledTimes(1);241 // Initial mount only shows the "Loading..." Fallback.242 // The treeBaseDuration then should be 10ms spent rendering Fallback,243 // but the actualDuration should also include the 8ms spent rendering the hidden tree.244 expect(onRender.mock.calls[0][2]).toBe(18);245 expect(onRender.mock.calls[0][3]).toBe(10);246 jest.advanceTimersByTime(1000);247 expect(root.toJSON()).toEqual(['Loaded', 'Text']);248 expect(onRender).toHaveBeenCalledTimes(2);249 // When the suspending data is resolved and our final UI is rendered,250 // the baseDuration should only include the 1ms re-rendering AsyncText,251 // but the treeBaseDuration should include the full 8ms spent in the tree.252 expect(onRender.mock.calls[1][2]).toBe(1);253 expect(onRender.mock.calls[1][3]).toBe(8);254 });255 it('properly accounts for base durations when a suspended times out in a concurrent tree', () => {256 const root = ReactTestRenderer.create(<App shouldSuspend={true} />, {257 unstable_isConcurrent: true,258 });259 expect(root).toFlushAndYield([260 'App',261 'Suspending',262 'Suspend! [Loaded]',263 'Text',264 'Fallback',265 ]);266 expect(root).toMatchRenderedOutput(null);267 // Show the fallback UI.268 jest.advanceTimersByTime(750);269 expect(root).toMatchRenderedOutput('Loading...');270 expect(onRender).toHaveBeenCalledTimes(1);271 // Initial mount only shows the "Loading..." Fallback.272 // The treeBaseDuration then should be 10ms spent rendering Fallback,273 // but the actualDuration should also include the 8ms spent rendering the hidden tree.274 expect(onRender.mock.calls[0][2]).toBe(18);275 expect(onRender.mock.calls[0][3]).toBe(10);276 // Resolve the pending promise.277 jest.advanceTimersByTime(250);278 expect(ReactTestRenderer).toHaveYielded([279 'Promise resolved [Loaded]',280 ]);281 expect(root).toFlushAndYield(['Suspending', 'Loaded', 'Text']);282 expect(root).toMatchRenderedOutput('LoadedText');283 expect(onRender).toHaveBeenCalledTimes(2);284 // When the suspending data is resolved and our final UI is rendered,285 // both times should include the 8ms re-rendering Suspending and AsyncText.286 expect(onRender.mock.calls[1][2]).toBe(8);287 expect(onRender.mock.calls[1][3]).toBe(8);288 });289 });290 describe('when suspending during update', () => {291 it('properly accounts for base durations when a suspended times out in a sync tree', () => {292 const root = ReactTestRenderer.create(293 <App shouldSuspend={false} textRenderDuration={5} />,294 );295 expect(root.toJSON()).toEqual('Text');296 expect(onRender).toHaveBeenCalledTimes(1);297 // Initial mount only shows the "Text" text.298 // It should take 5ms to render.299 expect(onRender.mock.calls[0][2]).toBe(5);300 expect(onRender.mock.calls[0][3]).toBe(5);301 root.update(<App shouldSuspend={true} textRenderDuration={5} />);302 expect(root.toJSON()).toEqual('Loading...');303 expect(onRender).toHaveBeenCalledTimes(2);304 // The suspense update should only show the "Loading..." Fallback.305 // Both durations should include 10ms spent rendering Fallback306 // plus the 8ms rendering the (hidden) components.307 expect(onRender.mock.calls[1][2]).toBe(18);308 expect(onRender.mock.calls[1][3]).toBe(18);309 root.update(310 <App shouldSuspend={true} text="New" textRenderDuration={6} />,311 );312 expect(root.toJSON()).toEqual('Loading...');313 expect(onRender).toHaveBeenCalledTimes(3);314 // If we force another update while still timed out,315 // but this time the Text component took 1ms longer to render.316 // This should impact both actualDuration and treeBaseDuration.317 expect(onRender.mock.calls[2][2]).toBe(19);318 expect(onRender.mock.calls[2][3]).toBe(19);319 jest.advanceTimersByTime(1000);320 expect(root.toJSON()).toEqual(['Loaded', 'New']);321 expect(onRender).toHaveBeenCalledTimes(4);322 // When the suspending data is resolved and our final UI is rendered,323 // the baseDuration should only include the 1ms re-rendering AsyncText,324 // but the treeBaseDuration should include the full 9ms spent in the tree.325 expect(onRender.mock.calls[3][2]).toBe(1);326 expect(onRender.mock.calls[3][3]).toBe(9);327 });328 it('properly accounts for base durations when a suspended times out in a concurrent tree', () => {329 const root = ReactTestRenderer.create(330 <App shouldSuspend={false} textRenderDuration={5} />,331 {332 unstable_isConcurrent: true,333 },334 );335 expect(root).toFlushAndYield(['App', 'Text']);336 expect(root).toMatchRenderedOutput('Text');337 expect(onRender).toHaveBeenCalledTimes(1);338 // Initial mount only shows the "Text" text.339 // It should take 5ms to render.340 expect(onRender.mock.calls[0][2]).toBe(5);341 expect(onRender.mock.calls[0][3]).toBe(5);342 root.update(<App shouldSuspend={true} textRenderDuration={5} />);343 expect(root).toFlushAndYield([344 'App',345 'Suspending',346 'Suspend! [Loaded]',347 'Text',348 'Fallback',349 ]);350 expect(root).toMatchRenderedOutput('Text');351 // Show the fallback UI.352 jest.advanceTimersByTime(750);353 expect(root).toMatchRenderedOutput('Loading...');354 expect(onRender).toHaveBeenCalledTimes(2);355 // The suspense update should only show the "Loading..." Fallback.356 // The actual duration should include 10ms spent rendering Fallback,357 // plus the 8ms render all of the hidden, suspended subtree.358 // But the tree base duration should only include 10ms spent rendering Fallback,359 // plus the 5ms rendering the previously committed version of the hidden tree.360 expect(onRender.mock.calls[1][2]).toBe(18);361 expect(onRender.mock.calls[1][3]).toBe(15);362 // Update again while timed out.363 root.update(364 <App shouldSuspend={true} text="New" textRenderDuration={6} />,365 );366 expect(root).toFlushAndYield([367 'App',368 'Suspending',369 'Suspend! [Loaded]',370 'New',371 'Fallback',372 ]);373 expect(root).toMatchRenderedOutput('Loading...');374 expect(onRender).toHaveBeenCalledTimes(2);375 // Resolve the pending promise.376 jest.advanceTimersByTime(250);377 expect(ReactTestRenderer).toHaveYielded([378 'Promise resolved [Loaded]',379 ]);380 expect(root).toFlushAndYield(['App', 'Suspending', 'Loaded', 'New']);381 expect(onRender).toHaveBeenCalledTimes(3);382 // When the suspending data is resolved and our final UI is rendered,383 // both times should include the 6ms rendering Text,384 // the 2ms rendering Suspending, and the 1ms rendering AsyncText.385 expect(onRender.mock.calls[2][2]).toBe(9);386 expect(onRender.mock.calls[2][3]).toBe(9);387 });388 });389 });390 });...
ReactSuspenseFuzz-test.internal.js
Source:ReactSuspenseFuzz-test.internal.js
1let React;2let Suspense;3let ReactTestRenderer;4let ReactFeatureFlags;5let Random;6const SEED = 0;7const prettyFormatPkg = require('pretty-format');8function prettyFormat(thing) {9 return prettyFormatPkg(thing, {10 plugins: [11 prettyFormatPkg.plugins.ReactElement,12 prettyFormatPkg.plugins.ReactTestComponent,13 ],14 });15}16describe('ReactSuspenseFuzz', () => {17 beforeEach(() => {18 jest.resetModules();19 ReactFeatureFlags = require('shared/ReactFeatureFlags');20 ReactFeatureFlags.debugRenderPhaseSideEffectsForStrictMode = false;21 ReactFeatureFlags.replayFailedUnitOfWorkWithInvokeGuardedCallback = false;22 React = require('react');23 Suspense = React.Suspense;24 ReactTestRenderer = require('react-test-renderer');25 Random = require('random-seed');26 });27 function createFuzzer() {28 const {useState, useContext, useLayoutEffect} = React;29 const ShouldSuspendContext = React.createContext(true);30 let pendingTasks = new Set();31 let cache = new Map();32 function resetCache() {33 pendingTasks = new Set();34 cache = new Map();35 }36 function Container({children, updates}) {37 const [step, setStep] = useState(0);38 useLayoutEffect(39 () => {40 if (updates !== undefined) {41 const cleanUps = new Set();42 updates.forEach(({remountAfter}, i) => {43 const task = {44 label: `Remount childen after ${remountAfter}ms`,45 };46 const timeoutID = setTimeout(() => {47 pendingTasks.delete(task);48 ReactTestRenderer.unstable_yield(task.label);49 setStep(i + 1);50 }, remountAfter);51 pendingTasks.add(task);52 cleanUps.add(() => {53 pendingTasks.delete(task);54 clearTimeout(timeoutID);55 });56 });57 return () => {58 cleanUps.forEach(cleanUp => cleanUp());59 };60 }61 },62 [updates],63 );64 return <React.Fragment key={step}>{children}</React.Fragment>;65 }66 function Text({text, initialDelay = 0, updates}) {67 const [[step, delay], setStep] = useState([0, initialDelay]);68 useLayoutEffect(69 () => {70 if (updates !== undefined) {71 const cleanUps = new Set();72 updates.forEach(({beginAfter, suspendFor}, i) => {73 const task = {74 label: `Update ${beginAfter}ms after mount and suspend for ${suspendFor}ms [${text}]`,75 };76 const timeoutID = setTimeout(() => {77 pendingTasks.delete(task);78 ReactTestRenderer.unstable_yield(task.label);79 setStep([i + 1, suspendFor]);80 }, beginAfter);81 pendingTasks.add(task);82 cleanUps.add(() => {83 pendingTasks.delete(task);84 clearTimeout(timeoutID);85 });86 });87 return () => {88 cleanUps.forEach(cleanUp => cleanUp());89 };90 }91 },92 [updates],93 );94 const fullText = `${text}:${step}`;95 const shouldSuspend = useContext(ShouldSuspendContext);96 let resolvedText;97 if (shouldSuspend && delay > 0) {98 resolvedText = cache.get(fullText);99 if (resolvedText === undefined) {100 const thenable = {101 then(resolve) {102 const task = {label: `Promise resolved [${fullText}]`};103 pendingTasks.add(task);104 setTimeout(() => {105 cache.set(fullText, fullText);106 pendingTasks.delete(task);107 ReactTestRenderer.unstable_yield(task.label);108 resolve();109 }, delay);110 },111 };112 cache.set(fullText, thenable);113 ReactTestRenderer.unstable_yield(`Suspended! [${fullText}]`);114 throw thenable;115 } else if (typeof resolvedText.then === 'function') {116 const thenable = resolvedText;117 ReactTestRenderer.unstable_yield(`Suspended! [${fullText}]`);118 throw thenable;119 }120 } else {121 resolvedText = fullText;122 }123 ReactTestRenderer.unstable_yield(resolvedText);124 return resolvedText;125 }126 function renderToRoot(127 root,128 children,129 {shouldSuspend} = {shouldSuspend: true},130 ) {131 root.update(132 <ShouldSuspendContext.Provider value={shouldSuspend}>133 {children}134 </ShouldSuspendContext.Provider>,135 );136 root.unstable_flushAll();137 let elapsedTime = 0;138 while (pendingTasks && pendingTasks.size > 0) {139 if ((elapsedTime += 1000) > 1000000) {140 throw new Error('Something did not resolve properly.');141 }142 ReactTestRenderer.act(() => jest.advanceTimersByTime(1000));143 root.unstable_flushAll();144 }145 return root.toJSON();146 }147 function testResolvedOutput(unwrappedChildren) {148 const children = (149 <Suspense fallback="Loading...">{unwrappedChildren}</Suspense>150 );151 const expectedRoot = ReactTestRenderer.create(null);152 const expectedOutput = renderToRoot(expectedRoot, children, {153 shouldSuspend: false,154 });155 expectedRoot.unmount();156 resetCache();157 const syncRoot = ReactTestRenderer.create(null);158 const syncOutput = renderToRoot(syncRoot, children);159 expect(syncOutput).toEqual(expectedOutput);160 syncRoot.unmount();161 resetCache();162 const concurrentRoot = ReactTestRenderer.create(null, {163 unstable_isConcurrent: true,164 });165 const concurrentOutput = renderToRoot(concurrentRoot, children);166 expect(concurrentOutput).toEqual(expectedOutput);167 concurrentRoot.unmount();168 concurrentRoot.unstable_flushAll();169 ReactTestRenderer.unstable_clearYields();170 }171 function pickRandomWeighted(rand, options) {172 let totalWeight = 0;173 for (let i = 0; i < options.length; i++) {174 totalWeight += options[i].weight;175 }176 let remainingWeight = rand.floatBetween(0, totalWeight);177 for (let i = 0; i < options.length; i++) {178 const {value, weight} = options[i];179 remainingWeight -= weight;180 if (remainingWeight <= 0) {181 return value;182 }183 }184 }185 function generateTestCase(rand, numberOfElements) {186 let remainingElements = numberOfElements;187 function createRandomChild(hasSibling) {188 const possibleActions = [189 {value: 'return', weight: 1},190 {value: 'text', weight: 1},191 ];192 if (hasSibling) {193 possibleActions.push({value: 'container', weight: 1});194 possibleActions.push({value: 'suspense', weight: 1});195 }196 const action = pickRandomWeighted(rand, possibleActions);197 switch (action) {198 case 'text': {199 remainingElements--;200 const numberOfUpdates = pickRandomWeighted(rand, [201 {value: 0, weight: 8},202 {value: 1, weight: 4},203 {value: 2, weight: 1},204 ]);205 let updates = [];206 for (let i = 0; i < numberOfUpdates; i++) {207 updates.push({208 beginAfter: rand.intBetween(0, 10000),209 suspendFor: rand.intBetween(0, 10000),210 });211 }212 return (213 <Text214 text={(remainingElements + 9).toString(36).toUpperCase()}215 initialDelay={rand.intBetween(0, 10000)}216 updates={updates}217 />218 );219 }220 case 'container': {221 const numberOfUpdates = pickRandomWeighted(rand, [222 {value: 0, weight: 8},223 {value: 1, weight: 4},224 {value: 2, weight: 1},225 ]);226 let updates = [];227 for (let i = 0; i < numberOfUpdates; i++) {228 updates.push({229 remountAfter: rand.intBetween(0, 10000),230 });231 }232 remainingElements--;233 const children = createRandomChildren(3);234 return React.createElement(Container, {updates}, ...children);235 }236 case 'suspense': {237 remainingElements--;238 const children = createRandomChildren(3);239 const maxDuration = pickRandomWeighted(rand, [240 {value: undefined, weight: 1},241 {value: rand.intBetween(0, 5000), weight: 1},242 ]);243 const fallbackType = pickRandomWeighted(rand, [244 {value: 'none', weight: 1},245 {value: 'normal', weight: 1},246 {value: 'nested suspense', weight: 1},247 ]);248 let fallback;249 if (fallbackType === 'normal') {250 fallback = 'Loading...';251 } else if (fallbackType === 'nested suspense') {252 fallback = React.createElement(253 React.Fragment,254 null,255 ...createRandomChildren(3),256 );257 }258 return React.createElement(259 Suspense,260 {maxDuration, fallback},261 ...children,262 );263 }264 case 'return':265 default:266 return null;267 }268 }269 function createRandomChildren(limit) {270 const children = [];271 while (remainingElements > 0 && children.length < limit) {272 children.push(createRandomChild(children.length > 0));273 }274 return children;275 }276 const children = createRandomChildren(Infinity);277 return React.createElement(React.Fragment, null, ...children);278 }279 return {Container, Text, testResolvedOutput, generateTestCase};280 }281 it('basic cases', () => {282 // This demonstrates that the testing primitives work283 const {Container, Text, testResolvedOutput} = createFuzzer();284 testResolvedOutput(285 <Container updates={[{remountAfter: 150}]}>286 <Text287 text="Hi"288 initialDelay={2000}289 updates={[{beginAfter: 100, suspendFor: 200}]}290 />291 </Container>,292 );293 });294 it('hard-coded cases', () => {295 const {Text, testResolvedOutput} = createFuzzer();296 testResolvedOutput(297 <React.Fragment>298 <Text299 initialDelay={20}300 text="A"301 updates={[{beginAfter: 10, suspendFor: 20}]}302 />303 <Suspense fallback="Loading... (B)">304 <Text305 initialDelay={10}306 text="B"307 updates={[{beginAfter: 30, suspendFor: 50}]}308 />309 <Text text="C" />310 </Suspense>311 </React.Fragment>,312 );313 });314 it('generative tests', () => {315 const {generateTestCase, testResolvedOutput} = createFuzzer();316 const rand = Random.create(SEED);317 const NUMBER_OF_TEST_CASES = 500;318 const ELEMENTS_PER_CASE = 12;319 for (let i = 0; i < NUMBER_OF_TEST_CASES; i++) {320 const randomTestCase = generateTestCase(rand, ELEMENTS_PER_CASE);321 try {322 testResolvedOutput(randomTestCase);323 } catch (e) {324 console.log(`325Failed fuzzy test case:326${prettyFormat(randomTestCase)}327`);328 throw e;329 }330 }331 });...
Using AI Code Generation
1const { shouldSuspend } = require('playwright/lib/utils/suspendable');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const page = await browser.newPage();6 const frame = page.mainFrame();7 const element = await frame.waitForSelector('input[name="q"]');8 const result = await shouldSuspend(element, () => element.getAttribute('name'));9 await browser.close();10})();11module.exports = {12 use: {13 viewport: { width: 1280, height: 720 },14 },15 {16 use: {17 },18 },19 {20 use: {21 },22 },23 {24 use: {25 },26 },27};28const { test, expect } = require('@playwright/test');29test('basic test', async ({ page }) => {30 const title = page.locator('.navbar__inner .navbar__title');31 await expect(title).toHaveText('Playwright');32});
Using AI Code Generation
1const { shouldSuspend } = require('playwright/lib/server/supplements/recorder/recorderSupplement');2const { Page } = require('playwright/lib/server/page');3const { Frame } = require('playwright/lib/server/frame');4const { JSHandle } = require('playwright/lib/server/jsHandle');5const { ElementHandle } = require('playwright/lib/server/dom');6const { Worker } = require('playwright/lib/server/worker');7const { shouldSuspend } = require('playwright/lib/server/supplements/recorder/recorderSupplement');8const { Page } = require('playwright/lib/server/page');9const { Frame } = require('playwright/lib/server/frame');10const { JSHandle } = require('playwright/lib/server/jsHandle');11const { ElementHandle } = require('playwright/lib/server/dom');12const { Worker } = require('playwright/lib/server/worker');13const { shouldSuspend } = require('playwright/lib/server/supplements/recorder/recorderSupplement');14const { Page } = require('playwright/lib/server/page');15const { Frame } = require('playwright/lib/server/frame');16const { JSHandle } = require('playwright/lib/server/jsHandle');17const { ElementHandle } = require('playwright/lib/server/dom');18const { Worker } = require('playwright/lib/server/worker');19const { shouldSuspend } = require('playwright/lib/server/supplements/recorder/recorderSupplement');20const { Page } = require('playwright/lib/server/page');21const { Frame } = require('playwright/lib/server/frame');22const { JSHandle } = require('playwright/lib/server/jsHandle');23const { ElementHandle } = require('playwright/lib/server/dom');24const { Worker } = require('playwright/lib/server/worker');25const { shouldSuspend } = require('playwright/lib/server/supplements/recorder/recorderSupplement');26const { Page } = require('playwright/lib/server/page');27const { Frame } = require('playwright/lib/server/frame');28const { JSHandle } = require('playwright/lib/server/jsHandle');29const { ElementHandle } = require('playwright/lib/server/dom');30const { Worker } = require('playwright/lib/server/worker');31const { shouldSuspend } = require('
Using AI Code Generation
1const { Playwright } = require('playwright');2const playwright = Playwright.create();3const browser = await playwright.chromium.launch();4const context = await browser.newContext();5const page = await context.newPage();6const shouldSuspend = page._delegate.shouldSuspend.bind(page._delegate);7const result = await shouldSuspend();8console.log(result);9await browser.close();
Using AI Code Generation
1const { shouldSuspend } = require('playwright/lib/internal/supplements/utils/suspender');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 await browser.close();8})();
Using AI Code Generation
1const { shouldSuspend } = require('playwright/lib/internal/supplements/recorder/supplements/recorderSupplement.js');2const { Page } = require('playwright/lib/server/page.js');3const { Frame } = require('playwright/lib/server/frame.js');4const { Page } = require('playwright/lib/server/page.js');5const { Frame } = require('playwright/lib/server/frame.js');6const { Page } = require('playwright/lib/server/page.js');7const { Frame } = require('playwright/lib/server/frame.js');8const { Page } = require('playwright/lib/server/page.js');9const { Frame } = require('playwright/lib/server/frame.js');10const { Page } = require('playwright/lib/server/page.js');11const { Frame } = require('playwright/lib/server/frame.js');12const { Page } = require('playwright/lib/server/page.js');13const { Frame } = require('playwright/lib/server/frame.js');14const { Page } = require('playwright/lib/server/page.js');15const { Frame } = require('playwright/lib/server/frame.js');16const { Page } = require('playwright/lib/server/page.js');17const { Frame } = require('playwright/lib/server/frame.js');18const { Page } = require('playwright/lib/server/page.js');19const { Frame } = require('playwright/lib/server/frame.js');20const { Page } = require('playwright/lib/server/page.js');21const { Frame } = require('playwright/lib/server/frame.js');22const { Page } = require('playwright/lib/server/page.js');23const { Frame } = require('playwright/lib/server/frame.js');24const { Page } = require('playwright/lib/server/page.js');25const { Frame } = require('playwright/lib/server/frame.js');26const { Page } = require('playwright/lib/server/page.js');27const { Frame } = require('playwright/lib/server/frame
Using AI Code Generation
1const { shouldSuspend } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');2const { Page } = require('playwright');3const page = new Page();4const frame = page.mainFrame();5const shouldSuspendResult = shouldSuspend(frame, 'click', {selector: '.foo'});6console.log(shouldSuspendResult);
Using AI Code Generation
1const { shouldSuspend } = require('playwright/lib/server/chromium/crNetworkManager');2const request = {3 headers: {4 'user-agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.117 Safari/537.36'5 }6};7const result = shouldSuspend(request);8console.log(result);
Using AI Code Generation
1const { shouldSuspend } = require('playwright/lib/internal');2const { isUnderTest } = require('playwright/lib/utils/utils');3const { isUnderTest } = require('playwright/lib/utils/utils');4const { isUnderTest } = require('playwright/lib/utils/utils');5isUnderTest() && shouldSuspend();6const { shouldSuspend } = require('playwright/lib/internal');7const { isUnderTest } = require('playwright/lib/utils/utils');8const { isUnderTest } = require('playwright/lib/utils/utils');9const { isUnderTest } = require('playwright/lib/utils/utils');10isUnderTest() && shouldSuspend();11const { shouldSuspend } = require('playwright/lib/internal');12const { isUnderTest } = require('playwright/lib/utils/utils');13const { isUnderTest } = require('playwright/lib/utils/utils');14const { isUnderTest } = require('playwright/lib/utils/utils');15isUnderTest() && shouldSuspend();16const { shouldSuspend } = require('playwright/lib/internal');17const { isUnderTest } = require('playwright/lib/utils/utils');18const { isUnderTest } = require('playwright/lib/utils/utils');19const { isUnderTest } = require('playwright/lib/utils/utils');20isUnderTest() && shouldSuspend();21const { shouldSuspend } = require('playwright/lib/internal');22const { isUnderTest } = require('playwright/lib/utils/utils');23const { isUnderTest } = require('playwright/lib/utils/utils');24const { isUnderTest } = require('playwright/lib/utils/utils');25isUnderTest() && shouldSuspend();26const { shouldSuspend } = require('playwright/lib/internal');27const { isUnderTest } = require('playwright/lib/utils/utils');28const { isUnderTest } = require('playwright/lib/utils/utils');29const { isUnderTest } = require('playwright/lib/utils/utils');30isUnderTest() && shouldSuspend();31const { shouldSuspend } = require('playwright/lib/internal');32const { isUnderTest } = require('playwright/lib/utils/utils');
Using AI Code Generation
1const { shouldSuspend } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement.js');2const { test } = require('@playwright/test');3test('my test', async ({ page }) => {4 await page.click('text=Get started');5 await shouldSuspend(page);6});7{8 "scripts": {9 },10 "devDependencies": {11 }12}
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.
Run Playwright Internal automation tests on LambdaTest cloud grid
Perform automation testing on 3000+ real desktop and mobile devices online.
Try LambdaTest Now !!
Get 100 minutes of automation test minutes FREE!!
Was this article helpful?
