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How to use observe method in Playwright Internal
Best JavaScript code snippet using playwright-internal
test_Preferences.js
Source:test_Preferences.js 
...156});157add_test(function test_observe_prefs_function() {158 let observed = false;159 let observer = function() { observed = !observed };160 Preferences.observe("test_observe_prefs_function", observer);161 Preferences.set("test_observe_prefs_function.subpref", "something");162 do_check_false(observed);163 Preferences.set("test_observe_prefs_function", "something");164 do_check_true(observed);165 Preferences.ignore("test_observe_prefs_function", observer);166 Preferences.set("test_observe_prefs_function", "something else");167 do_check_true(observed);168 // Clean up.169 Preferences.reset("test_observe_prefs_function");170 Preferences.reset("test_observe_prefs_function.subpref");171 run_next_test();172});173add_test(function test_observe_prefs_object() {174 let observer = {175 observed: false,176 observe() {177 this.observed = !this.observed;178 }179 };180 Preferences.observe("test_observe_prefs_object", observer.observe, observer);181 Preferences.set("test_observe_prefs_object.subpref", "something");182 do_check_false(observer.observed);183 Preferences.set("test_observe_prefs_object", "something");184 do_check_true(observer.observed);185 Preferences.ignore("test_observe_prefs_object", observer.observe, observer);186 Preferences.set("test_observe_prefs_object", "something else");187 do_check_true(observer.observed);188 // Clean up.189 Preferences.reset("test_observe_prefs_object");190 Preferences.reset("test_observe_prefs_object.subpref");191 run_next_test();192});193add_test(function test_observe_prefs_nsIObserver() {194 let observer = {195 observed: false,196 observe(subject, topic, data) {197 this.observed = !this.observed;198 do_check_true(subject instanceof Ci.nsIPrefBranch);199 do_check_eq(topic, "nsPref:changed");200 do_check_eq(data, "test_observe_prefs_nsIObserver");201 }202 };203 Preferences.observe("test_observe_prefs_nsIObserver", observer);204 Preferences.set("test_observe_prefs_nsIObserver.subpref", "something");205 Preferences.set("test_observe_prefs_nsIObserver", "something");206 do_check_true(observer.observed);207 Preferences.ignore("test_observe_prefs_nsIObserver", observer);208 Preferences.set("test_observe_prefs_nsIObserver", "something else");209 do_check_true(observer.observed);210 // Clean up.211 Preferences.reset("test_observe_prefs_nsIObserver");212 Preferences.reset("test_observe_prefs_nsIObserver.subpref");213 run_next_test();214});215// This should not need to be said, but *DO NOT DISABLE THIS TEST*.216//217// Existing consumers of the observer API depend on the observer only218// being triggered for the exact preference they are observing. This is219// expecially true for consumers of the function callback variant which220// passes the preference's new value but not its name.221add_test(function test_observe_exact_pref() {222 let observed = false;223 let observer = function() { observed = !observed };224 Preferences.observe("test_observe_exact_pref", observer);225 Preferences.set("test_observe_exact_pref.sub-pref", "something");226 do_check_false(observed);227 // Clean up.228 Preferences.ignore("test_observe_exact_pref", observer);229 Preferences.reset("test_observe_exact_pref.sub-pref");230 run_next_test();231});232add_test(function test_observe_value_of_set_pref() {233 let observer = function(newVal) { do_check_eq(newVal, "something") };234 Preferences.observe("test_observe_value_of_set_pref", observer);235 Preferences.set("test_observe_value_of_set_pref.subpref", "somethingelse");236 Preferences.set("test_observe_value_of_set_pref", "something");237 // Clean up.238 Preferences.ignore("test_observe_value_of_set_pref", observer);239 Preferences.reset("test_observe_value_of_set_pref");240 Preferences.reset("test_observe_value_of_set_pref.subpref");241 run_next_test();242});243add_test(function test_observe_value_of_reset_pref() {244 let observer = function(newVal) { do_check_true(typeof newVal == "undefined") };245 Preferences.set("test_observe_value_of_reset_pref", "something");246 Preferences.observe("test_observe_value_of_reset_pref", observer);247 Preferences.reset("test_observe_value_of_reset_pref");248 // Clean up.249 Preferences.ignore("test_observe_value_of_reset_pref", observer);250 run_next_test();251});252add_test(function test_has_pref() {253 do_check_false(Preferences.has("test_has_pref"));254 Preferences.set("test_has_pref", "foo");255 do_check_true(Preferences.has("test_has_pref"));256 Preferences.set("test_has_pref.foo", "foo");257 Preferences.set("test_has_pref.bar", "bar");258 let [hasFoo, hasBar, hasBaz] = Preferences.has(["test_has_pref.foo",259 "test_has_pref.bar",260 "test_has_pref.baz"]);...
observe.js
Source:observe.js
1// XXX maybe move these into another ObserveHelpers package or something2// _CachingChangeObserver is an object which receives observeChanges callbacks3// and keeps a cache of the current cursor state up to date in self.docs. Users4// of this class should read the docs field but not modify it. You should pass5// the "applyChange" field as the callbacks to the underlying observeChanges6// call. Optionally, you can specify your own observeChanges callbacks which are7// invoked immediately before the docs field is updated; this object is made8// available as `this` to those callbacks.9LocalCollection._CachingChangeObserver = function (options) {10 var self = this;11 options = options || {};12 var orderedFromCallbacks = options.callbacks &&13 LocalCollection._observeChangesCallbacksAreOrdered(options.callbacks);14 if (_.has(options, 'ordered')) {15 self.ordered = options.ordered;16 if (options.callbacks && options.ordered !== orderedFromCallbacks)17 throw Error("ordered option doesn't match callbacks");18 } else if (options.callbacks) {19 self.ordered = orderedFromCallbacks;20 } else {21 throw Error("must provide ordered or callbacks");22 }23 var callbacks = options.callbacks || {};24 if (self.ordered) {25 self.docs = new OrderedDict(LocalCollection._idStringify);26 self.applyChange = {27 addedBefore: function (id, fields, before) {28 var doc = EJSON.clone(fields);29 doc._id = id;30 callbacks.addedBefore && callbacks.addedBefore.call(31 self, id, fields, before);32 // This line triggers if we provide added with movedBefore.33 callbacks.added && callbacks.added.call(self, id, fields);34 // XXX could `before` be a falsy ID? Technically35 // idStringify seems to allow for them -- though36 // OrderedDict won't call stringify on a falsy arg.37 self.docs.putBefore(id, doc, before || null);38 },39 movedBefore: function (id, before) {40 var doc = self.docs.get(id);41 callbacks.movedBefore && callbacks.movedBefore.call(self, id, before);42 self.docs.moveBefore(id, before || null);43 }44 };45 } else {46 self.docs = new LocalCollection._IdMap;47 self.applyChange = {48 added: function (id, fields) {49 var doc = EJSON.clone(fields);50 callbacks.added && callbacks.added.call(self, id, fields);51 doc._id = id;52 self.docs.set(id, doc);53 }54 };55 }56 // The methods in _IdMap and OrderedDict used by these callbacks are57 // identical.58 self.applyChange.changed = function (id, fields) {59 var doc = self.docs.get(id);60 if (!doc)61 throw new Error("Unknown id for changed: " + id);62 callbacks.changed && callbacks.changed.call(63 self, id, EJSON.clone(fields));64 LocalCollection._applyChanges(doc, fields);65 };66 self.applyChange.removed = function (id) {67 callbacks.removed && callbacks.removed.call(self, id);68 self.docs.remove(id);69 };70};71LocalCollection._observeFromObserveChanges = function (cursor, observeCallbacks) {72 var transform = cursor.getTransform() || function (doc) {return doc;};73 var suppressed = !!observeCallbacks._suppress_initial;74 var observeChangesCallbacks;75 if (LocalCollection._observeCallbacksAreOrdered(observeCallbacks)) {76 // The "_no_indices" option sets all index arguments to -1 and skips the77 // linear scans required to generate them. This lets observers that don't78 // need absolute indices benefit from the other features of this API --79 // relative order, transforms, and applyChanges -- without the speed hit.80 var indices = !observeCallbacks._no_indices;81 observeChangesCallbacks = {82 addedBefore: function (id, fields, before) {83 var self = this;84 if (suppressed || !(observeCallbacks.addedAt || observeCallbacks.added))85 return;86 var doc = transform(_.extend(fields, {_id: id}));87 if (observeCallbacks.addedAt) {88 var index = indices89 ? (before ? self.docs.indexOf(before) : self.docs.size()) : -1;90 observeCallbacks.addedAt(doc, index, before);91 } else {92 observeCallbacks.added(doc);93 }94 },95 changed: function (id, fields) {96 var self = this;97 if (!(observeCallbacks.changedAt || observeCallbacks.changed))98 return;99 var doc = EJSON.clone(self.docs.get(id));100 if (!doc)101 throw new Error("Unknown id for changed: " + id);102 var oldDoc = transform(EJSON.clone(doc));103 LocalCollection._applyChanges(doc, fields);104 doc = transform(doc);105 if (observeCallbacks.changedAt) {106 var index = indices ? self.docs.indexOf(id) : -1;107 observeCallbacks.changedAt(doc, oldDoc, index);108 } else {109 observeCallbacks.changed(doc, oldDoc);110 }111 },112 movedBefore: function (id, before) {113 var self = this;114 if (!observeCallbacks.movedTo)115 return;116 var from = indices ? self.docs.indexOf(id) : -1;117 var to = indices118 ? (before ? self.docs.indexOf(before) : self.docs.size()) : -1;119 // When not moving backwards, adjust for the fact that removing the120 // document slides everything back one slot.121 if (to > from)122 --to;123 observeCallbacks.movedTo(transform(EJSON.clone(self.docs.get(id))),124 from, to, before || null);125 },126 removed: function (id) {127 var self = this;128 if (!(observeCallbacks.removedAt || observeCallbacks.removed))129 return;130 // technically maybe there should be an EJSON.clone here, but it's about131 // to be removed from self.docs!132 var doc = transform(self.docs.get(id));133 if (observeCallbacks.removedAt) {134 var index = indices ? self.docs.indexOf(id) : -1;135 observeCallbacks.removedAt(doc, index);136 } else {137 observeCallbacks.removed(doc);138 }139 }140 };141 } else {142 observeChangesCallbacks = {143 added: function (id, fields) {144 if (!suppressed && observeCallbacks.added) {145 var doc = _.extend(fields, {_id: id});146 observeCallbacks.added(transform(doc));147 }148 },149 changed: function (id, fields) {150 var self = this;151 if (observeCallbacks.changed) {152 var oldDoc = self.docs.get(id);153 var doc = EJSON.clone(oldDoc);154 LocalCollection._applyChanges(doc, fields);155 observeCallbacks.changed(transform(doc),156 transform(EJSON.clone(oldDoc)));157 }158 },159 removed: function (id) {160 var self = this;161 if (observeCallbacks.removed) {162 observeCallbacks.removed(transform(self.docs.get(id)));163 }164 }165 };166 }167 var changeObserver = new LocalCollection._CachingChangeObserver(168 {callbacks: observeChangesCallbacks});169 var handle = cursor.observeChanges(changeObserver.applyChange);170 suppressed = false;171 return handle;...
observableset.js
Source:observableset.js
...61 return false;62 }63 this.observers_.push(observer);64 goog.array.forEach(this.observables_, function(o) {65 o.observe(observer);66 });67 return true;68};69/**70 * Removes an observer from the set. The observer will be removed from71 * all observables in the set. Does nothing if the observer is not in72 * the set.73 * @param {!goog.labs.observe.Observer} observer The observer to remove.74 * @return {boolean} Whether the observer is actually removed.75 */76goog.labs.observe.ObservableSet.prototype.removeObserver = function(observer) {77 // Check that the observer exists before removing.78 var removed = goog.array.removeIf(this.observers_, goog.partial(79 goog.labs.observe.Observer.equals, observer));80 if (removed) {81 goog.array.forEach(this.observables_, function(o) {82 o.unobserve(observer);83 });84 }85 return removed;86};87/**88 * Removes all registered observers.89 */90goog.labs.observe.ObservableSet.prototype.removeAllObservers = function() {91 this.unregisterAll_();92 this.observers_.length = 0;93};94/**95 * Adds an observable to the set. All previously added and future96 * observers will be added to the new observable as well.97 *98 * The observable will not be added if it is already registered in the99 * set.100 *101 * @param {!goog.labs.observe.Observable} observable The observable to add.102 * @return {boolean} Whether the observable is actually added.103 */104goog.labs.observe.ObservableSet.prototype.addObservable = function(observable) {105 if (goog.array.contains(this.observables_, observable)) {106 return false;107 }108 this.observables_.push(observable);109 goog.array.forEach(this.observers_, function(observer) {110 observable.observe(observer);111 });112 return true;113};114/**115 * Removes an observable from the set. All observers registered on the116 * set will be removed from the observable as well.117 * @param {!goog.labs.observe.Observable} observable The observable to remove.118 * @return {boolean} Whether the observable is actually removed.119 */120goog.labs.observe.ObservableSet.prototype.removeObservable = function(121 observable) {122 var removed = goog.array.remove(this.observables_, observable);123 if (removed) {124 goog.array.forEach(this.observers_, function(observer) {125 observable.unobserve(observer);126 });127 }128 return removed;129};130/**131 * Removes all registered observables.132 */133goog.labs.observe.ObservableSet.prototype.removeAllObservables = function() {134 this.unregisterAll_();135 this.observables_.length = 0;136};137/**138 * Removes all registered observations and observables.139 */140goog.labs.observe.ObservableSet.prototype.removeAll = function() {141 this.removeAllObservers();142 this.observables_.length = 0;143};144/**145 * Unregisters all registered observers from all registered observables.146 * @private147 */148goog.labs.observe.ObservableSet.prototype.unregisterAll_ = function() {149 goog.array.forEach(this.observers_, function(observer) {150 goog.array.forEach(this.observables_, function(o) {151 o.unobserve(observer);152 });153 }, this);...
observationset.js
Source:observationset.js
...50 * @return {boolean} True if the observer is successfully registered.51 */52goog.labs.observe.ObservationSet.prototype.observe = function(53 observable, observer) {54 var success = observable.observe(observer);55 if (success) {56 this.storedObservations_.push(57 new goog.labs.observe.ObservationSet.Observation_(58 observable, observer));59 }60 return success;61};62/**63 * Observes the given function on the observable.64 * @param {!goog.labs.observe.Observable} observable The observable to65 * observe on.66 * @param {function(!goog.labs.observe.Notice)} fn The handler function.67 * @param {!Object=} opt_scope Optional scope.68 * @return {goog.labs.observe.Observer} The registered observer object.69 * If the observer is not successfully registered, this will be null.70 */71goog.labs.observe.ObservationSet.prototype.observeWithFunction = function(72 observable, fn, opt_scope) {73 var observer = goog.labs.observe.Observer.fromFunction(74 fn, opt_scope || this.defaultScope_);75 if (this.observe(observable, observer)) {76 return observer;77 }78 return null;79};80/**81 * Unobserves the given observer from the observable.82 * @param {!goog.labs.observe.Observable} observable The observable to83 * unobserve from.84 * @param {!goog.labs.observe.Observer} observer The observer.85 * @return {boolean} True if the observer is successfully removed.86 */87goog.labs.observe.ObservationSet.prototype.unobserve = function(88 observable, observer) {89 var removed = goog.array.removeIf(90 this.storedObservations_, function(o) {91 return o.observable == observable &&92 goog.labs.observe.Observer.equals(o.observer, observer);93 });94 if (removed) {95 observable.unobserve(observer);96 }97 return removed;98};99/**100 * Unobserves the given function from the observable.101 * @param {!goog.labs.observe.Observable} observable The observable to102 * unobserve from.103 * @param {function(!goog.labs.observe.Notice)} fn The handler function.104 * @param {!Object=} opt_scope Optional scope.105 * @return {boolean} True if the observer is successfully removed.106 */107goog.labs.observe.ObservationSet.prototype.unobserveWithFunction = function(108 observable, fn, opt_scope) {109 var observer = goog.labs.observe.Observer.fromFunction(110 fn, opt_scope || this.defaultScope_);111 return this.unobserve(observable, observer);112};113/**114 * Removes all observations registered through this set.115 */116goog.labs.observe.ObservationSet.prototype.removeAll = function() {117 goog.array.forEach(this.storedObservations_, function(observation) {118 var observable = observation.observable;119 var observer = observation.observer;120 observable.unobserve(observer);121 });122};123/**124 * A representation of an observation, which is defined uniquely by125 * the observable and observer.126 * @param {!goog.labs.observe.Observable} observable The observable.127 * @param {!goog.labs.observe.Observer} observer The observer.128 * @constructor129 * @private130 */131goog.labs.observe.ObservationSet.Observation_ = function(132 observable, observer) {133 this.observable = observable;134 this.observer = observer;...
simpleobservable.js
Source:simpleobservable.js
...42 * };43 * goog.inherits(ClassA, goog.Disposable);44 *45 * ClassA.prototype.observe = function(observer) {46 * this.observable_.observe(observer);47 * };48 *49 * ClassA.prototype.unobserve = function(observer) {50 * this.observable_.unobserve(observer);51 * };52 *53 * ClassA.prototype.notify = function(opt_data) {54 * this.observable_.notify(opt_data);55 * };56 * </pre>57 *58 * @param {!goog.labs.observe.Observable=} opt_actualObservable59 * Optional observable object. Defaults to 'this'. When used as60 * base class, the parameter need not be given. It is only useful61 * when using this class to implement implement {@code Observable}62 * interface on another object, see example above.63 * @constructor64 * @implements {goog.labs.observe.Observable}...
observer.js
Source:observer.js
1// Copyright 2012 The Closure Library Authors. All Rights Reserved.2//3// Licensed under the Apache License, Version 2.0 (the "License");4// you may not use this file except in compliance with the License.5// You may obtain a copy of the License at6//7// http://www.apache.org/licenses/LICENSE-2.08//9// Unless required by applicable law or agreed to in writing, software10// distributed under the License is distributed on an "AS-IS" BASIS,11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.12// See the License for the specific language governing permissions and13// limitations under the License.14/**15 * @fileoverview Provide definition of an observer. This is meant to16 * be used with {@code goog.labs.observe.Observable}.17 *18 * This file also provides convenient functions to compare and create19 * Observer objects.20 *21 */22goog.provide('goog.labs.observe.Observer');23/**24 * A class implementing {@code Observer} may be informed of changes in25 * observable object.26 * @see {goog.labs.observe.Observable}27 * @interface28 */29goog.labs.observe.Observer = function() {};30/**31 * Notifies the observer of changes to the observable object.32 * @param {!goog.labs.observe.Notice} notice The notice object.33 */34goog.labs.observe.Observer.prototype.notify;35/**36 * Whether this observer is equal to the given observer.37 * @param {!goog.labs.observe.Observer} observer The observer to compare with.38 * @return {boolean} Whether the two observers are equal.39 */40goog.labs.observe.Observer.prototype.equals;41/**42 * @param {!goog.labs.observe.Observer} observer1 Observer to compare.43 * @param {!goog.labs.observe.Observer} observer2 Observer to compare.44 * @return {boolean} Whether observer1 and observer2 are equal, as45 * determined by the first observer1's {@code equals} method.46 */47goog.labs.observe.Observer.equals = function(observer1, observer2) {48 return observer1 == observer2 || observer1.equals(observer2);49};50/**51 * Creates an observer that calls the given function.52 * @param {function(!goog.labs.observe.Notice)} fn Function to be converted.53 * @param {!Object=} opt_scope Optional scope to execute the function.54 * @return {!goog.labs.observe.Observer} An observer object.55 */56goog.labs.observe.Observer.fromFunction = function(fn, opt_scope) {57 return new goog.labs.observe.Observer.FunctionObserver_(fn, opt_scope);58};59/**60 * An observer that calls the given function on {@code notify}.61 * @param {function(!goog.labs.observe.Notice)} fn Function to delegate to.62 * @param {!Object=} opt_scope Optional scope to execute the function.63 * @constructor64 * @implements {goog.labs.observe.Observer}65 * @private66 */67goog.labs.observe.Observer.FunctionObserver_ = function(fn, opt_scope) {68 this.fn_ = fn;69 this.scope_ = opt_scope;70};71/** @override */72goog.labs.observe.Observer.FunctionObserver_.prototype.notify = function(73 notice) {74 this.fn_.call(this.scope_, notice);75};76/** @override */77goog.labs.observe.Observer.FunctionObserver_.prototype.equals = function(78 observer) {79 return this.fn_ === observer.fn_ && this.scope_ === observer.scope_;...
options.js
Source:options.js
...12 test('attributeOldValue and attributes', function() {13 var div = document.createElement('div');14 var observer = new MutationObserver(function() {});15 assert.throws(function() {16 observer.observe(div, {17 attributeOldValue: true,18 attributes: false19 });20 }, TypeError);21 observer.observe(div, {22 attributeOldValue: true,23 });24 observer.observe(div, {25 attributeOldValue: false,26 attributes: false27 });28 observer.observe(div, {29 attributeOldValue: false,30 attributes: true31 });32 observer.observe(div, {33 attributeOldValue: true,34 attributes: true35 });36 });37 test('attributeFilter and attributes', function() {38 var div = document.createElement('div');39 var observer = new MutationObserver(function() {});40 assert.throws(function() {41 observer.observe(div, {42 attributeFilter: ['name'],43 attributes: false44 });45 }, TypeError);46 observer.observe(div, {47 attributeFilter: ['name'],48 });49 assert.throws(function() {50 observer.observe(div, {51 attributeFilter: null,52 });53 }, TypeError);54 observer.observe(div, {55 attributeFilter: ['name'],56 attributes: true57 });58 observer.observe(div, {59 attributes: false60 });61 observer.observe(div, {62 attributes: true63 });64 });65 test('characterDataOldValue and characterData', function() {66 var div = document.createElement('div');67 var observer = new MutationObserver(function() {});68 assert.throws(function() {69 observer.observe(div, {70 characterDataOldValue: true,71 characterData: false72 });73 }, TypeError);74 observer.observe(div, {75 characterDataOldValue: true76 });77 observer.observe(div, {78 characterDataOldValue: false,79 characterData: false80 });81 observer.observe(div, {82 characterDataOldValue: false,83 characterData: true84 });85 observer.observe(div, {86 characterDataOldValue: true,87 characterData: true88 });89 });90 });...
index.js
Source:index.js
1import observeEntries from './observeEntries'2import observePaint from './observePaint'3import observeLCP from './observeLCP'4import observeCLS from './observeCLS'5import observeFID from './observeFID'6import observerLoad from './observerLoad'7import observeFirstScreenPaint from './observeFirstScreenPaint'8import fps from './fps'9import onVueRouter from './onVueRouter'10import config from '../config'11export default function capturePerformance() {12 observeEntries()13 observePaint()14 observeLCP()15 observeCLS()16 observeFID()17 fps()18 observerLoad()19 observeFirstScreenPaint()20 if (config.vue?.Vue && config.vue?.router) {21 onVueRouter(config.vue.Vue, config.vue.router)22 }...
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 await page.fill('input[title="Search"]', 'Playwright');7 await page.press('input[title="Search"]', 'Enter');8 await page.waitForNavigation();9 await page.screenshot({ path: 'google-playwright.png' });10 await browser.close();11})();12const { chromium } = require('playwright');13(async () => {14 const browser = await chromium.launch();15 const context = await browser.newContext();16 const page = await context.newPage();17 await page.fill('input[title="Search"]', 'Playwright');18 await page.press('input[title="Search"]', 'Enter');19 await page.waitForNavigation();20 await page.screenshot({ path: 'google-playwright.png' });21 await browser.close();22})();23const { chromium } = require('playwright');24(async () => {25 const browser = await chromium.launch();26 const context = await browser.newContext();27 const page = await context.newPage();28 await page.fill('input[title="Search"]', 'Playwright');29 await page.press('input[title="Search"]', 'Enter');30 await page.waitForNavigation();31 await page.screenshot({ path: 'google-playwright.png' });32 await browser.close();33})();34const { chromium } = require('playwright');35(async () => {36 const browser = await chromium.launch();37 const context = await browser.newContext();38 const page = await context.newPage();39 await page.fill('input[title="Search"]', 'Playwright');40 await page.press('input[title="Search"]', 'Enter');41 await page.waitForNavigation();42 await page.screenshot({ path: 'google-playwright.png' });43 await browser.close();44})();
Using AI Code Generation
1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch();4 const page = await browser.newPage();5 const client = await page.context().newCDPSession(page);6 await client.send('Network.enable');7 await client.send('Network.setCacheDisabled', { cacheDisabled: true });8 await client.send('Network.setRequestInterception', { patterns: [{ urlPattern: '*', interceptionStage: 'HeadersReceived' }] });9 client.on('Network.requestIntercepted', async ({ interceptionId, request }) => {10 await client.send('Network.continueInterceptedRequest', {11 headers: {12 },13 });14 });15 await page.screenshot({ path: 'example.png' });16 await browser.close();17})();
Using AI Code Generation
1const { chromium } = require('playwright');2const { observe } = require('playwright/lib/server/supplements/recorder/recorderSupplement');3(async () => {4 const browser = await chromium.launch({ headless: false });5 const context = await browser.newContext();6 await observe(context, true);7 const page = await context.newPage();8 await observe(context, false);9 await browser.close();10})();11const { chromium } = require('playwright');12const { observe } = require('playwright/lib/server/supplements/recorder/recorderSupplement');13(async () => {14 const browser = await chromium.launch({ headless: false });15 const context = await browser.newContext();16 await observe(context, true);17 const page = await context.newPage();18 await observe(context, false);19 await browser.close();20})();21This project is licensed under the terms of the [Apache License 2.0](
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.exposeBinding('log', (source, ...args) => {6 console.log(...args);7 });8 await page.evaluate(async () => {9 await window.__playwright__internal__object.observe('log', (message) => {10 window.log(message);11 });12 });13 await page.evaluate(() => {14 window.log('Hello World');15 });16 await browser.close();17})();18BrowserContext.exposeBinding(name, bindingCallback[, options])19BrowserContext.exposeBindingHandle(name, bindingCallback[, options])20Page.exposeBinding(name, bindingCallback[, options])21Page.exposeBindingHandle(name, bindingCallback[, options])
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 [request] = await Promise.all([7 page.waitForEvent('request'),8 ]);9 console.log(request.url());10 await browser.close();11})();12const { chromium } = require('playwright');13(async () => {14 const browser = await chromium.launch();15 const context = await browser.newContext();16 const page = await context.newPage();17 const [response] = await Promise.all([18 page.waitForEvent('response'),19 ]);20 console.log(response.url());21 await browser.close();22})();23const { chromium } = require('playwright');24(async () => {25 const browser = await chromium.launch();26 const context = await browser.newContext();27 const page = await context.newPage();28 const [request] = await Promise.all([29 page.waitForEvent('requestfailed'),30 ]);31 console.log(request.url());32 await browser.close();33})();34const { chromium } = require('playwright');35(async () => {36 const browser = await chromium.launch();37 const context = await browser.newContext();38 const page = await context.newPage();39 const [request] = await Promise.all([40 page.waitForEvent('requestfinished'),41 ]);42 console.log(request.url());43 await browser.close();44})();45const { chromium } = require('playwright');46(async () => {47 const browser = await chromium.launch();48 const context = await browser.newContext();49 const page = await context.newPage();50 const [request] = await Promise.all([51 page.waitForEvent('requestfinished'),52 ]);
Using AI Code Generation
1const { observe } = require('@playwright/test/lib/server/observer');2const { chromium } = require('playwright');3const browser = await chromium.launch();4const context = await browser.newContext();5const page = await context.newPage();6const observer = observe(page);7const { observe } = require('@playwright/test/lib/server/observer');8const { chromium } = require('playwright');9const browser = await chromium.launch();10const context = await browser.newContext();11const page = await context.newPage();12const observer = observe(page);13const { observe } = require('@playwright/test/lib/server/observer');14const { chromium } = require('playwright');15const browser = await chromium.launch();16const context = await browser.newContext();17const page = await context.newPage();18const observer = observe(page);19const { observe } = require('@playwright/test/lib/server/observer');20const { chromium } = require('playwright');21const browser = await chromium.launch();22const context = await browser.newContext();23const page = await context.newPage();24const observer = observe(page);25const { observe } = require('@playwright/test/lib/server/observer');26const { chromium } = require('playwright');27const browser = await chromium.launch();28const context = await browser.newContext();29const page = await context.newPage();30const observer = observe(page);31const { observe } = require('@playwright/test/lib/server/observer');32const { chromium } = require('playwright');33const browser = await chromium.launch();34const context = await browser.newContext();35const page = await context.newPage();36const observer = observe(page);37const { observe } = require('@playwright/test/lib/server/observer');38const { chromium } = require('playwright');
Using AI Code Generation
1const { Playwright } = require('playwright-core');2const { chromium } = require('playwright-core');3const path = require('path');4const fs = require('fs');5(async () => {6 const browser = await chromium.launch({ headless: false });7 const context = await browser.newContext();8 const page = await context.newPage();9 const controller = await page._delegate.observeDownload();10 await page.click('text=Get Started');11 const download = await controller.next();12 console.log(await download.path());13 await browser.close();14})();15const { Playwright } = require('playwright-core');16const { chromium } = require('playwright-core');17const path = require('path');18const fs = require('fs');19(async () => {20 const browser = await chromium.launch({ headless: false });21 const context = await browser.newContext();22 const page = await context.newPage();23 const controller = await page._delegate.observeDownload();24 await page.click('text=Get Started');25 const download = await controller.next();26 console.log(await download.path());27 await browser.close();28})();29const { Playwright } = require('playwright-core');30const { chromium } = require('playwright-core');31const path = require('path');32const fs = require('fs');33(async () => {34 const browser = await chromium.launch({ headless: false });35 const context = await browser.newContext();36 const page = await context.newPage();37 const controller = await page._delegate.observeDownload();38 await page.click('text=Get Started');39 const download = await controller.next();40 console.log(await download.path());41 await browser.close();42})();43const { Playwright } = require('playwright-core');44const { chromium } = require('playwright-core');45const path = require('path');46const fs = require('fs');47(async () => {48 const browser = await chromium.launch({ headless: false });49 const context = await browser.newContext();
Using AI Code Generation
1const { Page } = require('playwright');2const { PageProxy } = require('playwright/lib/server/pageProxy');3const { Events } = require('playwright/lib/server/events');4const { helper } = require('playwright/lib/helper');5const { assert } = require('playwright/lib/utils/utils');6const { TimeoutError } = require('playwright/lib/errors');7const { debugLogger } = require('playwright/lib/utils/debugLogger');8const { EventEmitter } = require('events');9class MyPage extends Page {10 constructor(delegate, browserContext, pageOrError) {11 super(delegate, browserContext, pageOrError);12 this._eventEmitter = new EventEmitter();13 }14 async observe(event) {15 return new Promise((resolve, reject) => {16 if (this._eventEmitter.listenerCount(event) > 0) {17 reject(new Error(`Event ${event} already observed`));18 }19 this._eventEmitter.on(event, (data) => {20 resolve(data);21 });22 });23 }24 _onBindingCalled(payload) {25 super._onBindingCalled(payload);26 this._eventEmitter.emit('bindingCalled', payload);27 }28}29class MyPageProxy extends PageProxy {30 constructor(parent, guid, initializer) {31 super(parent, guid, initializer);32 this._eventEmitter = new EventEmitter();33 }34 async observe(event) {35 return new Promise((resolve, reject) => {36 if (this._eventEmitter.listenerCount(event) > 0) {37 reject(new Error(`Event ${event} already observed`));38 }39 this._eventEmitter.on(event, (data) => {40 resolve(data);41 });42 });43 }44 _onBindingCalled(params) {45 super._onBindingCalled(params);46 this._eventEmitter.emit('bindingCalled', params);47 }48}49class MyEvents extends Events {50 constructor(connection, context) {51 super(connection, context);52 this._eventEmitter = new EventEmitter();53 }54 async observe(event) {55 return new Promise((resolve, reject) => {56 if (this._eventEmitter.listenerCount(event) > 0) {57 reject(new Error(`Event ${event} already observed`));58 }59 this._eventEmitter.on(event, (data) => {60 resolve(data);61 });62 });63 }64 _onBindingCalled(params) {65 super._onBindingCalled(params);
Using AI Code Generation
1const { chromium } = require('playwright');2const { createTracing } = require('@tracerbench/core');3const { observe } = require('@tracerbench/observe');4const { observeTraceEvents } = require('@tracerbench/observe');5(async () => {6 const browser = await chromium.launch();7 const page = await browser.newPage();8 const tracing = await createTracing(page);9 const traceEvents = await observeTraceEvents(page, async () => {10 await page.click('text=Get Started');11 });12 await tracing.stop();13 await browser.close();14})();15const { chromium } = require('playwright');16const { createTracing } = require('@tracerbench/core');17const { observe } = require('@tracerbench/observe');18const { observeTraceEvents } = require('@tracerbench/observe');19(async () => {20 const browser = await chromium.launch();21 const page = await browser.newPage();22 const tracing = await createTracing(page);23 const traceEvents = await observeTraceEvents(page, async () => {24 await page.click('text=Get Started');25 });26 await tracing.stop();27 await browser.close();28})();29const { chromium } = require('playwright');30const { createTracing } = require('@tracerbench/core');31const { observe } = require('@tracerbench/observe');32const { observeTraceEvents } = require('@tracerbench/observe');33(async () => {34 const browser = await chromium.launch();35 const page = await browser.newPage();36 const tracing = await createTracing(page);37 const traceEvents = await observeTraceEvents(page, async () => {38 await page.click('text=Get Started');39 });40 await tracing.stop();41 await browser.close();42})();43const { chromium } = require('playwright');44const { createTracing } = require('@tracerbench/core');45const { observe
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.
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