/** * Copyright 2018 Google Inc. All rights reserved. * Modifications copyright (c) Microsoft Corporation. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import './base.fixture'; it('should work', async ({ page, server }) => { const result = await page.evaluate(() => 7 * 3); expect(result).toBe(21); }); it('should transfer NaN', async ({ page, server }) => { const result = await page.evaluate(a => a, NaN); expect(Object.is(result, NaN)).toBe(true); }); it('should transfer -0', async ({ page, server }) => { const result = await page.evaluate(a => a, -0); expect(Object.is(result, -0)).toBe(true); }); it('should transfer Infinity', async ({ page, server }) => { const result = await page.evaluate(a => a, Infinity); expect(Object.is(result, Infinity)).toBe(true); }); it('should transfer -Infinity', async ({ page, server }) => { const result = await page.evaluate(a => a, -Infinity); expect(Object.is(result, -Infinity)).toBe(true); }); it('should roundtrip unserializable values', async ({ page }) => { const value = { infinity: Infinity, nInfinity: -Infinity, nZero: -0, nan: NaN, }; const result = await page.evaluate(value => value, value); expect(result).toEqual(value); }); it('should roundtrip promise to value', async ({ page }) => { { const result = await page.evaluate(value => Promise.resolve(value), null); expect(result === null).toBeTruthy(); } { const result = await page.evaluate(value => Promise.resolve(value), Infinity); expect(result === Infinity).toBeTruthy(); } { const result = await page.evaluate(value => Promise.resolve(value), -0); expect(result === -0).toBeTruthy(); } { const result = await page.evaluate(value => Promise.resolve(value), undefined); expect(result === undefined).toBeTruthy(); } }); it('should roundtrip promise to unserializable values', async ({ page }) => { const value = { infinity: Infinity, nInfinity: -Infinity, nZero: -0, nan: NaN, }; const result = await page.evaluate(value => Promise.resolve(value), value); expect(result).toEqual(value); }); it('should transfer arrays', async ({ page, server }) => { const result = await page.evaluate(a => a, [1, 2, 3]); expect(result).toEqual([1, 2, 3]); }); it('should transfer arrays as arrays, not objects', async ({ page, server }) => { const result = await page.evaluate(a => Array.isArray(a), [1, 2, 3]); expect(result).toBe(true); }); it('should transfer maps as empty objects', async ({ page, server }) => { const result = await page.evaluate(a => a.x.constructor.name + ' ' + JSON.stringify(a.x), { x: new Map([[1, 2]]) }); expect(result).toBe('Object {}'); }); it('should modify global environment', async ({ page }) => { await page.evaluate(() => window['globalVar'] = 123); expect(await page.evaluate('globalVar')).toBe(123); }); it('should evaluate in the page context', async ({ page, server }) => { await page.goto(server.PREFIX + '/global-var.html'); expect(await page.evaluate('globalVar')).toBe(123); }); it('should return undefined for objects with symbols', async ({ page, server }) => { expect(await page.evaluate(() => [Symbol('foo4')])).toEqual([undefined]); expect(await page.evaluate(() => { const a = {}; a[Symbol('foo4')] = 42; return a; })).toEqual({}); expect(await page.evaluate(() => { return { foo: [{ a: Symbol('foo4') }] }; })).toEqual({ foo: [{ a: undefined }] }); }); it('should work with function shorthands', async ({ page, server }) => { const a = { sum([a, b]) { return a + b; }, async mult([a, b]) { return a * b; } }; expect(await page.evaluate(a.sum, [1, 2])).toBe(3); expect(await page.evaluate(a.mult, [2, 4])).toBe(8); }); it('should work with unicode chars', async ({ page, server }) => { const result = await page.evaluate(a => a['中文字符'], { '中文字符': 42 }); expect(result).toBe(42); }); it('should throw when evaluation triggers reload', async ({ page, server }) => { let error = null; await page.evaluate(() => { location.reload(); return new Promise(() => { }); }).catch(e => error = e); expect(error.message).toContain('navigation'); }); it('should await promise', async ({ page, server }) => { const result = await page.evaluate(() => Promise.resolve(8 * 7)); expect(result).toBe(56); }); it('should work right after framenavigated', async ({ page, server }) => { let frameEvaluation = null; page.on('framenavigated', async frame => { frameEvaluation = frame.evaluate(() => 6 * 7); }); await page.goto(server.EMPTY_PAGE); expect(await frameEvaluation).toBe(42); }); it('should work right after a cross-origin navigation', async ({ page, server }) => { await page.goto(server.EMPTY_PAGE); let frameEvaluation = null; page.on('framenavigated', async frame => { frameEvaluation = frame.evaluate(() => 6 * 7); }); await page.goto(server.CROSS_PROCESS_PREFIX + '/empty.html'); expect(await frameEvaluation).toBe(42); }); it('should work from-inside an exposed function', async ({ page, server }) => { // Setup inpage callback, which calls Page.evaluate await page.exposeFunction('callController', async function (a, b) { return await page.evaluate(({ a, b }) => a * b, { a, b }); }); const result = await page.evaluate(async function () { return await window['callController'](9, 3); }); expect(result).toBe(27); }); it('should reject promise with exception', async ({ page, server }) => { let error = null; //@ts-ignore await page.evaluate(() => not_existing_object.property).catch(e => error = e); expect(error).toBeTruthy(); expect(error.message).toContain('not_existing_object'); }); it('should support thrown strings as error messages', async ({ page, server }) => { let error = null; await page.evaluate(() => { throw 'qwerty'; }).catch(e => error = e); expect(error).toBeTruthy(); expect(error.message).toContain('qwerty'); }); it('should support thrown numbers as error messages', async ({ page, server }) => { let error = null; await page.evaluate(() => { throw 100500; }).catch(e => error = e); expect(error).toBeTruthy(); expect(error.message).toContain('100500'); }); it('should return complex objects', async ({ page, server }) => { const object = { foo: 'bar!' }; const result = await page.evaluate(a => a, object); expect(result).not.toBe(object); expect(result).toEqual(object); }); it('should return NaN', async ({ page, server }) => { const result = await page.evaluate(() => NaN); expect(Object.is(result, NaN)).toBe(true); }); it('should return -0', async ({ page, server }) => { const result = await page.evaluate(() => -0); expect(Object.is(result, -0)).toBe(true); }); it('should return Infinity', async ({ page, server }) => { const result = await page.evaluate(() => Infinity); expect(Object.is(result, Infinity)).toBe(true); }); it('should return -Infinity', async ({ page, server }) => { const result = await page.evaluate(() => -Infinity); expect(Object.is(result, -Infinity)).toBe(true); }); it('should work with overwritten Promise', async ({ page, server }) => { await page.evaluate(() => { const originalPromise = window.Promise; class Promise2 { _promise: Promise; static all(arg) { return wrap(originalPromise.all(arg)); } static race(arg) { return wrap(originalPromise.race(arg)); } static resolve(arg) { return wrap(originalPromise.resolve(arg)); } constructor(f) { this._promise = new originalPromise(f); } then(f, r) { return wrap(this._promise.then(f, r)); } catch(f) { return wrap(this._promise.catch(f)); } finally(f) { return wrap(this._promise.finally(f)); } }; const wrap = p => { const result = new Promise2(() => { }); result._promise = p; return result; }; //@ts-ignore; window.Promise = Promise2; window["__Promise2"] = Promise2; }); // Sanity check. expect(await page.evaluate(() => { const p = Promise.all([Promise.race([]), new Promise(() => { }).then(() => { })]); return p instanceof window["__Promise2"]; })).toBe(true); // Now, the new promise should be awaitable. expect(await page.evaluate(() => Promise.resolve(42))).toBe(42); }); it('should throw when passed more than one parameter', async ({ page, server }) => { const expectThrow = async f => { let error; await f().catch(e => error = e); expect('' + error).toContain('Too many arguments'); } //@ts-ignore await expectThrow(() => page.evaluate((a, b) => false, 1, 2)); //@ts-ignore await expectThrow(() => page.evaluateHandle((a, b) => false, 1, 2)); //@ts-ignore await expectThrow(() => page.$eval('sel', (a, b) => false, 1, 2)); //@ts-ignore await expectThrow(() => page.$$eval('sel', (a, b) => false, 1, 2)); //@ts-ignore await expectThrow(() => page.evaluate((a, b) => false, 1, 2)); const frame = page.mainFrame(); //@ts-ignore await expectThrow(() => frame.evaluate((a, b) => false, 1, 2)); //@ts-ignore await expectThrow(() => frame.evaluateHandle((a, b) => false, 1, 2)); //@ts-ignore await expectThrow(() => frame.$eval('sel', (a, b) => false, 1, 2)); //@ts-ignore await expectThrow(() => frame.$$eval('sel', (a, b) => false, 1, 2)); //@ts-ignore await expectThrow(() => frame.evaluate((a, b) => false, 1, 2)); }); it('should accept "undefined" as one of multiple parameters', async ({ page, server }) => { const result = await page.evaluate(({ a, b }) => Object.is(a, undefined) && Object.is(b, 'foo'), { a: undefined, b: 'foo' }); expect(result).toBe(true); }); it('should properly serialize undefined arguments', async ({ page }) => { expect(await page.evaluate(x => ({ a: x }), undefined)).toEqual({}); }); it('should properly serialize undefined fields', async ({ page }) => { expect(await page.evaluate(() => ({ a: undefined }))).toEqual({}); }); it('should return undefined properties', async ({ page }) => { const value = await page.evaluate(() => ({ a: undefined })); expect('a' in value).toBe(true); }); it('should properly serialize null arguments', async ({ page }) => { expect(await page.evaluate(x => x, null)).toEqual(null); }); it('should properly serialize null fields', async ({ page }) => { expect(await page.evaluate(() => ({ a: null }))).toEqual({ a: null }); }); it('should return undefined for non-serializable objects', async ({ page, server }) => { expect(await page.evaluate(() => window)).toBe(undefined); }); it('should fail for circular object', async ({ page, server }) => { const result = await page.evaluate(() => { const a = {} as any; const b = { a }; a.b = b; return a; }); expect(result).toBe(undefined); }); it('should be able to throw a tricky error', async ({ page, server }) => { const windowHandle = await page.evaluateHandle(() => window); const errorText = await windowHandle.jsonValue().catch(e => e.message); const error = await page.evaluate(errorText => { throw new Error(errorText); }, errorText).catch(e => e); expect(error.message).toContain(errorText); }); it('should accept a string', async ({ page, server }) => { const result = await page.evaluate('1 + 2'); expect(result).toBe(3); }); it('should accept a string with semi colons', async ({ page, server }) => { const result = await page.evaluate('1 + 5;'); expect(result).toBe(6); }); it('should accept a string with comments', async ({ page, server }) => { const result = await page.evaluate('2 + 5;\n// do some math!'); expect(result).toBe(7); }); it('should accept element handle as an argument', async ({ page, server }) => { await page.setContent('
42
'); const element = await page.$('section'); const text = await page.evaluate(e => e.textContent, element); expect(text).toBe('42'); }); it('should throw if underlying element was disposed', async ({ page, server }) => { await page.setContent('
39
'); const element = await page.$('section'); expect(element).toBeTruthy(); await element.dispose(); let error = null; await page.evaluate(e => e.textContent, element).catch(e => error = e); expect(error.message).toContain('JSHandle is disposed'); }); it('should simulate a user gesture', async ({ page, server }) => { const result = await page.evaluate(() => { document.body.appendChild(document.createTextNode('test')); document.execCommand('selectAll'); return document.execCommand('copy'); }); expect(result).toBe(true); }); it('should throw a nice error after a navigation', async ({ page, server }) => { const errorPromise = page.evaluate(() => new Promise(f => window['__resolve'] = f)).catch(e => e) as Promise; await Promise.all([ page.waitForNavigation(), page.evaluate(() => { window.location.reload(); setTimeout(() => window['__resolve'](42), 1000); }) ]); const error = await errorPromise; expect(error.message).toContain('navigation'); }); it('should not throw an error when evaluation does a navigation', async ({ page, server }) => { await page.goto(server.PREFIX + '/one-style.html'); const result = await page.evaluate(() => { window.location.href = '/empty.html'; return [42]; }); expect(result).toEqual([42]); }); it.fail(options.WEBKIT)('should not throw an error when evaluation does a synchronous navigation and returns an object', async ({ page, server }) => { // It is imporant to be on about:blank for sync reload. const result = await page.evaluate(() => { window.location.reload(); return { a: 42 }; }); expect(result).toEqual({ a: 42 }); }); it('should not throw an error when evaluation does a synchronous navigation and returns undefined', async ({ page, server }) => { // It is imporant to be on about:blank for sync reload. const result = await page.evaluate(() => { window.location.reload(); return undefined; }); expect(result).toBe(undefined); }); it.fail(options.WIRE)('should transfer 100Mb of data from page to node.js', async ({ page }) => { // This is too slow with wire. const a = await page.evaluate(() => Array(100 * 1024 * 1024 + 1).join('a')); expect(a.length).toBe(100 * 1024 * 1024); }); it('should throw error with detailed information on exception inside promise ', async ({ page, server }) => { let error = null; await page.evaluate(() => new Promise(() => { throw new Error('Error in promise'); })).catch(e => error = e); expect(error.message).toContain('Error in promise'); }); it('should work even when JSON is set to null', async ({ page }) => { await page.evaluate(() => { window.JSON.stringify = null; window.JSON = null; }); const result = await page.evaluate(() => ({ abc: 123 })); expect(result).toEqual({ abc: 123 }); }); it.fail(options.FFOX)('should await promise from popup', async ({ page, server }) => { // Something is wrong about the way Firefox waits for the chained promise await page.goto(server.EMPTY_PAGE); const result = await page.evaluate(() => { const win = window.open('about:blank'); return new win['Promise'](f => f(42)); }); expect(result).toBe(42); }); it('should work with new Function() and CSP', async ({ page, server }) => { server.setCSP('/empty.html', 'script-src ' + server.PREFIX); await page.goto(server.PREFIX + '/empty.html'); expect(await page.evaluate(() => new Function('return true')())).toBe(true); }); it('should work with non-strict expressions', async ({ page, server }) => { expect(await page.evaluate(() => { //@ts-ignore y = 3.14; //@ts-ignore return y; })).toBe(3.14); }); it('should respect use strict expression', async ({ page, server }) => { const error = await page.evaluate(() => { "use strict"; //@ts-ignore variableY = 3.14; //@ts-ignore return variableY; }).catch(e => e); expect(error.message).toContain('variableY'); }); it('should not leak utility script', async function ({ page, server }) { expect(await page.evaluate(() => this === window)).toBe(true); }); it('should not leak handles', async ({ page, server }) => { const error = await page.evaluate('handles.length').catch(e => e); expect((error as Error).message).toContain(' handles'); }); it('should work with CSP', async ({ page, server }) => { server.setCSP('/empty.html', `script-src 'self'`); await page.goto(server.EMPTY_PAGE); expect(await page.evaluate(() => 2 + 2)).toBe(4); }); it('should evaluate exception', async ({ page, server }) => { const error = await page.evaluate(() => { return (function functionOnStack() { return new Error('error message'); })(); }); expect(error).toContain('Error: error message'); expect(error).toContain('functionOnStack'); }); it('should evaluate exception', async ({ page, server }) => { const error = await page.evaluate(`new Error('error message')`); expect(error).toContain('Error: error message'); }); it('should evaluate date', async ({ page }) => { const result = await page.evaluate(() => ({ date: new Date('2020-05-27T01:31:38.506Z') })); expect(result).toEqual({ date: new Date('2020-05-27T01:31:38.506Z') }); }); it('should roundtrip date', async ({ page }) => { const date = new Date('2020-05-27T01:31:38.506Z'); const result = await page.evaluate(date => date, date); expect(result.toUTCString()).toEqual(date.toUTCString()); }); it('should roundtrip regex', async ({ page }) => { const regex = /hello/im; const result = await page.evaluate(regex => regex, regex); expect(result.toString()).toEqual(regex.toString()); }); it('should jsonValue() date', async ({ page }) => { const resultHandle = await page.evaluateHandle(() => ({ date: new Date('2020-05-27T01:31:38.506Z') })); expect(await resultHandle.jsonValue()).toEqual({ date: new Date('2020-05-27T01:31:38.506Z') }); }); it('should not use toJSON when evaluating', async ({ page, server }) => { const result = await page.evaluate(() => ({ toJSON: () => 'string', data: 'data' })); expect(result).toEqual({ data: 'data', toJSON: {} }); }); it('should not use toJSON in jsonValue', async ({ page, server }) => { const resultHandle = await page.evaluateHandle(() => ({ toJSON: () => 'string', data: 'data' })); expect(await resultHandle.jsonValue()).toEqual({ data: 'data', toJSON: {} }); });