Best JavaScript code snippet using playwright-internal
javascript.js
Source: javascript.js
...220 return expression;221} // Error inside the expression evaluation as opposed to a protocol error.222class JavaScriptErrorInEvaluate extends Error {}223exports.JavaScriptErrorInEvaluate = JavaScriptErrorInEvaluate;224function isJavaScriptErrorInEvaluate(error) {225 return error instanceof JavaScriptErrorInEvaluate;...
crExecutionContext.js
Source: crExecutionContext.js
...121 type: 'undefined'122 }123 };124 if (error instanceof TypeError && error.message.startsWith('Converting circular structure to JSON')) (0, _stackTrace.rewriteErrorMessage)(error, error.message + ' Are you passing a nested JSHandle?');125 if (!js.isJavaScriptErrorInEvaluate(error) && !(0, _protocolError.isSessionClosedError)(error)) throw new Error('Execution context was destroyed, most likely because of a navigation.');126 throw error;127}128function potentiallyUnserializableValue(remoteObject) {129 const value = remoteObject.value;130 const unserializableValue = remoteObject.unserializableValue;131 return unserializableValue ? js.parseUnserializableValue(unserializableValue) : value;132}133function renderPreview(object) {134 if (object.type === 'undefined') return 'undefined';135 if ('value' in object) return String(object.value);136 if (object.unserializableValue) return String(object.unserializableValue);137 if (object.description === 'Object' && object.preview) {138 const tokens = [];139 for (const {...
ffExecutionContext.js
Source: ffExecutionContext.js
...112 value: undefined113 }114 };115 if (error instanceof TypeError && error.message.startsWith('Converting circular structure to JSON')) (0, _stackTrace.rewriteErrorMessage)(error, error.message + ' Are you passing a nested JSHandle?');116 if (!js.isJavaScriptErrorInEvaluate(error) && !(0, _protocolError.isSessionClosedError)(error)) throw new Error('Execution context was destroyed, most likely because of a navigation.');117 throw error;118}119function potentiallyUnserializableValue(remoteObject) {120 const value = remoteObject.value;121 const unserializableValue = remoteObject.unserializableValue;122 return unserializableValue ? js.parseUnserializableValue(unserializableValue) : value;123}124function renderPreview(object) {125 if (object.type === 'undefined') return 'undefined';126 if (object.unserializableValue) return String(object.unserializableValue);127 if (object.type === 'symbol') return 'Symbol()';128 if (object.subtype === 'regexp') return 'RegExp';129 if (object.subtype === 'weakmap') return 'WeakMap';130 if (object.subtype === 'weakset') return 'WeakSet';...
wkExecutionContext.js
Source: wkExecutionContext.js
...121 const isUnserializable = remoteObject.type === 'number' && ['NaN', '-Infinity', 'Infinity', '-0'].includes(remoteObject.description);122 return isUnserializable ? js.parseUnserializableValue(remoteObject.description) : value;123}124function rewriteError(error) {125 if (!js.isJavaScriptErrorInEvaluate(error) && !(0, _protocolError.isSessionClosedError)(error)) return new Error('Execution context was destroyed, most likely because of a navigation.');126 return error;127}128function renderPreview(object) {129 if (object.type === 'undefined') return 'undefined';130 if ('value' in object) return String(object.value);131 if (object.description === 'Object' && object.preview) {132 const tokens = [];133 for (const {134 name,135 value136 } of object.preview.properties) tokens.push(`${name}: ${value}`);137 return `{${tokens.join(', ')}}`;138 }139 if (object.subtype === 'array' && object.preview) {...
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 try {7 await page.evaluate(() => {8 const obj = {};9 obj.foo.bar();10 });11 } catch (error) {12 const isJS = page.isJavaScriptErrorInEvaluate(error);13 console.log('isJS', isJS);14 }15 await browser.close();16})();17const { chromium } = require('playwright');18(async () => {19 const browser = await chromium.launch();20 const context = await browser.newContext();21 const page = await context.newPage();22 try {23 await page.evaluate(() => {24 const obj = {};25 obj.foo.bar();26 });27 } catch (error) {28 const isJS = page.isJavaScriptErrorInEvaluate(error);29 console.log('isJS', isJS);30 }31 await browser.close();32})();33const { chromium } = require('playwright');34(async () => {35 const browser = await chromium.launch();36 const context = await browser.newContext();37 const page = await context.newPage();38 try {39 await page.evaluate(() => {40 const obj = {};41 obj.foo.bar();42 });43 } catch (error) {44 const isJS = page.isJavaScriptErrorInEvaluate(error);45 console.log('isJS', isJS);46 }47 await browser.close();48})();49const { chromium } = require('playwright');50(async () => {51 const browser = await chromium.launch();52 const context = await browser.newContext();53 const page = await context.newPage();54 try {55 await page.evaluate(() => {
Using AI Code Generation
1const { isJavaScriptErrorInEvaluate } = require('playwright/lib/internal/stackTrace');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const page = await browser.newPage();6 try {7 await page.evaluate(() => { throw new Error('foo'); });8 } catch (e) {9 console.log(isJavaScriptErrorInEvaluate(e));10 }11 await browser.close();12})();
Using AI Code Generation
1const { isJavaScriptErrorInEvaluate } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch({ headless: false, slowMo: 100 });5 const context = await browser.newContext();6 const page = await context.newPage();7 await page.evaluate(() => {8 throw new Error('this is a test');9 });10 await browser.close();11})();12const { isJavaScriptErrorInEvaluate } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');13const { chromium } = require('playwright');14(async () => {15 const browser = await chromium.launch({ headless: false, slowMo: 100 });16 const context = await browser.newContext();17 const page = await context.newPage();18 await page.evaluate(() => {19 throw new Error('this is a test');20 });21 await browser.close();22})();23const { isJavaScriptErrorInEvaluate } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');24const { chromium } = require('playwright');25(async () => {26 const browser = await chromium.launch({ headless: false, slowMo: 100 });27 const context = await browser.newContext();28 const page = await context.newPage();29 await page.evaluate(() => {30 throw new Error('this is a test');31 });32 await browser.close();33})();34const { isJavaScriptErrorInEvaluate } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');35const { chromium } = require('playwright');36(async () => {37 const browser = await chromium.launch({ headless: false, slowMo: 100 });38 const context = await browser.newContext();39 const page = await context.newPage();40 await page.evaluate(() => {41 throw new Error('this is a test');42 });
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.evaluate(() => {7 throw new Error('Error in evaluate');8 });9 await browser.close();10})();11 at ExecutionContext._evaluateInternal (C:\Users\username\Documents\playwright\playwright\lib\client\page.js:1:3349)12 at processTicksAndRejections (internal/process/task_queues.js:93:5)13 at async Page.evaluate (C:\Users\username\Documents\playwright\playwright\lib\client\page.js:1:2303)14 at async Object.<anonymous> (C:\Users\username\Documents\playwright\playwright\test.js:8:3)
Using AI Code Generation
1const { isJavaScriptErrorInEvaluate } = require('playwright/lib/server/chromium/crExecutionContext.js');2(async () => {3 const browser = await chromium.launch();4 const context = await browser.newContext();5 const page = await context.newPage();6 await page.evaluate(() => {7 window.test = 1;8 });9 await page.evaluate(() => {10 window.test.test();11 });12 await browser.close();13})();14const { test, expect } = require('@playwright/test');15test('should throw an error', async ({ page }) => {16 const error = await page.evaluate(() => {17 window.test.test();18 }).catch(e => e);19 expect(error).toBeTruthy();20 expect(error.message).toContain('window.test.test is not a function');21});22const { test, expect } = require('@playwright/test');23test('should throw an error', async ({ page }) => {24 const error = await page.evaluate(() => {25 window.test.test();26 }).catch(e => e);27 expect(error).toBeTruthy();28 expect(error.message).toContain('window.test.test is not a function');29});
Using AI Code Generation
1const { isJavaScriptErrorInEvaluate } = require('playwright/lib/server/supplements/recorder/recorderApp');2const { chromium } = require('playwright');3const fs = require('fs');4(async () => {5 const browser = await chromium.launch();6 const context = await browser.newContext();7 const page = await context.newPage();8 const error = await page.evaluate(() => {9 return new Error('my error');10 });11 const isJavaScriptError = isJavaScriptErrorInEvaluate(error);12 fs.writeFileSync('result.txt', isJavaScriptError);13 await browser.close();14})();15I think this is a good idea, but I am not sure about the name. Maybe just isJavaScriptError() ?16I think this is a good idea, but I am not sure about the name. Maybe just isJavaScriptError() ?17I think this is a good idea, but I am not sure about the name. Maybe just isJavaScriptError() ?
Using AI Code Generation
1const { isJavaScriptErrorInEvaluate } = require("playwright/lib/server/frames");2const { chromium } = require("playwright");3const { assert } = require("console");4const { test } = require("mocha");5(async () => {6 const browser = await chromium.launch();7 const context = await browser.newContext();8 const page = await context.newPage();9 try {10 await page.evaluate(() => {11 throw new Error("Error in evaluate");12 });13 } catch (error) {14 assert.strictEqual(isJavaScriptErrorInEvaluate(error), true);15 }16 try {17 await page.evaluate(() => {18 const a = {};19 a.b.c();20 });21 } catch (error) {22 assert.strictEqual(isJavaScriptErrorInEvaluate(error), true);23 }24 try {25 await page.evaluate(() => {26 return new Promise((resolve, reject) => {27 setTimeout(() => {28 reject("Error in evaluate");29 }, 1000);30 });31 });32 } catch (error) {33 assert.strictEqual(isJavaScriptErrorInEvaluate(error), true);34 }35 try {36 await page.evaluate(() => {37 return new Promise((resolve, reject) => {38 setTimeout(() => {39 reject(new Error("Error in evaluate"));40 }, 1000);41 });42 });43 } catch (error) {44 assert.strictEqual(isJavaScriptErrorInEvaluate(error), true);45 }46 try {47 await page.evaluate(() => {48 return new Promise((resolve, reject) => {49 setTimeout(() => {50 reject(new Error("Error in evaluate"));51 }, 1000);52 });53 });54 } catch (error) {55 assert.strictEqual(isJavaScriptErrorInEvaluate(error), true);56 }57 try {58 await page.evaluate(() => {59 return new Promise((resolve, reject) => {60 setTimeout(() => {61 reject("Error in evaluate");62 }, 1000);63 });64 });65 } catch (error) {66 assert.strictEqual(isJavaScriptErrorInEvaluate(error), true);67 }68 try {69 await page.evaluate(() => {
Jest + Playwright - Test callbacks of event-based DOM library
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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
})
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