mirror of
https://github.com/puppeteer/puppeteer
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477 lines
16 KiB
TypeScript
477 lines
16 KiB
TypeScript
/**
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* Copyright 2018 Google Inc. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import utils from './utils.js';
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import expect from 'expect';
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import {
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getTestState,
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setupTestBrowserHooks,
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setupTestPageAndContextHooks,
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itFailsFirefox,
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describeFailsFirefox,
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} from './mocha-utils'; // eslint-disable-line import/extensions
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const bigint = typeof BigInt !== 'undefined';
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describe('Evaluation specs', function () {
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setupTestBrowserHooks();
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setupTestPageAndContextHooks();
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describe('Page.evaluate', function () {
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it('should work', async () => {
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const { page } = getTestState();
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const result = await page.evaluate(() => 7 * 3);
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expect(result).toBe(21);
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});
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(bigint ? it : xit)('should transfer BigInt', async () => {
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const { page } = getTestState();
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const result = await page.evaluate((a: bigint) => a, BigInt(42));
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expect(result).toBe(BigInt(42));
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});
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it('should transfer NaN', async () => {
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const { page } = getTestState();
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const result = await page.evaluate((a) => a, NaN);
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expect(Object.is(result, NaN)).toBe(true);
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});
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it('should transfer -0', async () => {
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const { page } = getTestState();
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const result = await page.evaluate((a) => a, -0);
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expect(Object.is(result, -0)).toBe(true);
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});
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it('should transfer Infinity', async () => {
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const { page } = getTestState();
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const result = await page.evaluate((a) => a, Infinity);
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expect(Object.is(result, Infinity)).toBe(true);
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});
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it('should transfer -Infinity', async () => {
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const { page } = getTestState();
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const result = await page.evaluate((a) => a, -Infinity);
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expect(Object.is(result, -Infinity)).toBe(true);
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});
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it('should transfer arrays', async () => {
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const { page } = getTestState();
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const result = await page.evaluate((a) => a, [1, 2, 3]);
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expect(result).toEqual([1, 2, 3]);
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});
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it('should transfer arrays as arrays, not objects', async () => {
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const { page } = getTestState();
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const result = await page.evaluate((a) => Array.isArray(a), [1, 2, 3]);
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expect(result).toBe(true);
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});
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it('should modify global environment', async () => {
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const { page } = getTestState();
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await page.evaluate(() => (globalThis.globalVar = 123));
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expect(await page.evaluate('globalVar')).toBe(123);
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});
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it('should evaluate in the page context', async () => {
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const { page, server } = getTestState();
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await page.goto(server.PREFIX + '/global-var.html');
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expect(await page.evaluate('globalVar')).toBe(123);
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});
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itFailsFirefox(
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'should return undefined for objects with symbols',
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async () => {
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const { page } = getTestState();
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expect(await page.evaluate(() => [Symbol('foo4')])).toBe(undefined);
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}
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);
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it('should work with function shorthands', async () => {
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const { page } = getTestState();
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const a = {
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sum(a, b) {
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return a + b;
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},
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async mult(a, b) {
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return a * b;
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},
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};
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expect(await page.evaluate(a.sum, 1, 2)).toBe(3);
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expect(await page.evaluate(a.mult, 2, 4)).toBe(8);
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});
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it('should work with unicode chars', async () => {
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const { page } = getTestState();
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const result = await page.evaluate((a) => a['中文字符'], {
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中文字符: 42,
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});
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expect(result).toBe(42);
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});
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itFailsFirefox('should throw when evaluation triggers reload', async () => {
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const { page } = getTestState();
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let error = null;
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await page
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.evaluate(() => {
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location.reload();
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return new Promise(() => {});
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})
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.catch((error_) => (error = error_));
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expect(error.message).toContain('Protocol error');
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});
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it('should await promise', async () => {
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const { page } = getTestState();
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const result = await page.evaluate(() => Promise.resolve(8 * 7));
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expect(result).toBe(56);
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});
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it('should work right after framenavigated', async () => {
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const { page, server } = getTestState();
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let frameEvaluation = null;
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page.on('framenavigated', async (frame) => {
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frameEvaluation = frame.evaluate(() => 6 * 7);
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});
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await page.goto(server.EMPTY_PAGE);
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expect(await frameEvaluation).toBe(42);
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});
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itFailsFirefox('should work from-inside an exposed function', async () => {
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const { page } = getTestState();
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// Setup inpage callback, which calls Page.evaluate
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await page.exposeFunction('callController', async function (a, b) {
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return await page.evaluate<(a: number, b: number) => number>(
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(a, b) => a * b,
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a,
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b
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);
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});
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const result = await page.evaluate(async function () {
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return await globalThis.callController(9, 3);
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});
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expect(result).toBe(27);
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});
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it('should reject promise with exception', async () => {
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const { page } = getTestState();
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let error = null;
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await page
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// @ts-expect-error we know the object doesn't exist
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.evaluate(() => notExistingObject.property)
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.catch((error_) => (error = error_));
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expect(error).toBeTruthy();
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expect(error.message).toContain('notExistingObject');
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});
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it('should support thrown strings as error messages', async () => {
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const { page } = getTestState();
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let error = null;
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await page
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.evaluate(() => {
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throw 'qwerty';
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})
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.catch((error_) => (error = error_));
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expect(error).toBeTruthy();
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expect(error.message).toContain('qwerty');
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});
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it('should support thrown numbers as error messages', async () => {
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const { page } = getTestState();
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let error = null;
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await page
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.evaluate(() => {
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throw 100500;
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})
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.catch((error_) => (error = error_));
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expect(error).toBeTruthy();
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expect(error.message).toContain('100500');
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});
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it('should return complex objects', async () => {
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const { page } = getTestState();
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const object = { foo: 'bar!' };
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const result = await page.evaluate((a) => a, object);
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expect(result).not.toBe(object);
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expect(result).toEqual(object);
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});
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(bigint ? it : xit)('should return BigInt', async () => {
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const { page } = getTestState();
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const result = await page.evaluate(() => BigInt(42));
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expect(result).toBe(BigInt(42));
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});
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it('should return NaN', async () => {
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const { page } = getTestState();
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const result = await page.evaluate(() => NaN);
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expect(Object.is(result, NaN)).toBe(true);
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});
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it('should return -0', async () => {
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const { page } = getTestState();
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const result = await page.evaluate(() => -0);
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expect(Object.is(result, -0)).toBe(true);
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});
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it('should return Infinity', async () => {
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const { page } = getTestState();
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const result = await page.evaluate(() => Infinity);
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expect(Object.is(result, Infinity)).toBe(true);
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});
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it('should return -Infinity', async () => {
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const { page } = getTestState();
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const result = await page.evaluate(() => -Infinity);
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expect(Object.is(result, -Infinity)).toBe(true);
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});
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it('should accept "undefined" as one of multiple parameters', async () => {
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const { page } = getTestState();
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const result = await page.evaluate(
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(a, b) => Object.is(a, undefined) && Object.is(b, 'foo'),
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undefined,
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'foo'
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);
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expect(result).toBe(true);
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});
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it('should properly serialize null fields', async () => {
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const { page } = getTestState();
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expect(await page.evaluate(() => ({ a: undefined }))).toEqual({});
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});
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itFailsFirefox(
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'should return undefined for non-serializable objects',
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async () => {
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const { page } = getTestState();
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expect(await page.evaluate(() => window)).toBe(undefined);
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}
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);
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itFailsFirefox('should fail for circular object', async () => {
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const { page } = getTestState();
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const result = await page.evaluate(() => {
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const a: { [x: string]: any } = {};
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const b = { a };
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a.b = b;
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return a;
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});
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expect(result).toBe(undefined);
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});
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itFailsFirefox('should be able to throw a tricky error', async () => {
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const { page } = getTestState();
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const windowHandle = await page.evaluateHandle(() => window);
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const errorText = await windowHandle
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.jsonValue<string>()
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.catch((error_) => error_.message);
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const error = await page
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.evaluate<(errorText: string) => Error>((errorText) => {
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throw new Error(errorText);
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}, errorText)
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.catch((error_) => error_);
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expect(error.message).toContain(errorText);
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});
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it('should accept a string', async () => {
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const { page } = getTestState();
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const result = await page.evaluate('1 + 2');
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expect(result).toBe(3);
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});
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it('should accept a string with semi colons', async () => {
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const { page } = getTestState();
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const result = await page.evaluate('1 + 5;');
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expect(result).toBe(6);
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});
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it('should accept a string with comments', async () => {
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const { page } = getTestState();
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const result = await page.evaluate('2 + 5;\n// do some math!');
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expect(result).toBe(7);
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});
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it('should accept element handle as an argument', async () => {
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const { page } = getTestState();
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await page.setContent('<section>42</section>');
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const element = await page.$('section');
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const text = await page.evaluate<(e: HTMLElement) => string>(
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(e) => e.textContent,
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element
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);
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expect(text).toBe('42');
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});
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it('should throw if underlying element was disposed', async () => {
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const { page } = getTestState();
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await page.setContent('<section>39</section>');
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const element = await page.$('section');
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expect(element).toBeTruthy();
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await element.dispose();
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let error = null;
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await page
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.evaluate((e: HTMLElement) => e.textContent, element)
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.catch((error_) => (error = error_));
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expect(error.message).toContain('JSHandle is disposed');
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});
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itFailsFirefox(
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'should throw if elementHandles are from other frames',
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async () => {
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const { page, server } = getTestState();
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await utils.attachFrame(page, 'frame1', server.EMPTY_PAGE);
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const bodyHandle = await page.frames()[1].$('body');
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let error = null;
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await page
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.evaluate((body: HTMLElement) => body.innerHTML, bodyHandle)
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.catch((error_) => (error = error_));
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expect(error).toBeTruthy();
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expect(error.message).toContain(
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'JSHandles can be evaluated only in the context they were created'
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);
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}
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);
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itFailsFirefox('should simulate a user gesture', async () => {
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const { page } = getTestState();
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const result = await page.evaluate(() => {
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document.body.appendChild(document.createTextNode('test'));
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document.execCommand('selectAll');
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return document.execCommand('copy');
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});
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expect(result).toBe(true);
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});
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itFailsFirefox('should throw a nice error after a navigation', async () => {
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const { page } = getTestState();
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const executionContext = await page.mainFrame().executionContext();
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await Promise.all([
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page.waitForNavigation(),
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executionContext.evaluate(() => window.location.reload()),
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]);
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const error = await executionContext
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.evaluate(() => null)
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.catch((error_) => error_);
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expect((error as Error).message).toContain('navigation');
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});
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itFailsFirefox(
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'should not throw an error when evaluation does a navigation',
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async () => {
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const { page, server } = getTestState();
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await page.goto(server.PREFIX + '/one-style.html');
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const result = await page.evaluate(() => {
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(window as any).location = '/empty.html';
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return [42];
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});
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expect(result).toEqual([42]);
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}
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);
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it('should transfer 100Mb of data from page to node.js', async function () {
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const { page } = getTestState();
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const a = await page.evaluate<() => string>(() =>
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Array(100 * 1024 * 1024 + 1).join('a')
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);
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expect(a.length).toBe(100 * 1024 * 1024);
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});
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it('should throw error with detailed information on exception inside promise ', async () => {
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const { page } = getTestState();
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let error = null;
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await page
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.evaluate(
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() =>
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new Promise(() => {
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throw new Error('Error in promise');
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})
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)
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.catch((error_) => (error = error_));
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expect(error.message).toContain('Error in promise');
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});
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});
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describeFailsFirefox('Page.evaluateOnNewDocument', function () {
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it('should evaluate before anything else on the page', async () => {
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const { page, server } = getTestState();
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await page.evaluateOnNewDocument(function () {
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globalThis.injected = 123;
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});
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await page.goto(server.PREFIX + '/tamperable.html');
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expect(await page.evaluate(() => globalThis.result)).toBe(123);
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});
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it('should work with CSP', async () => {
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const { page, server } = getTestState();
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server.setCSP('/empty.html', 'script-src ' + server.PREFIX);
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await page.evaluateOnNewDocument(function () {
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globalThis.injected = 123;
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});
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await page.goto(server.PREFIX + '/empty.html');
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expect(await page.evaluate(() => globalThis.injected)).toBe(123);
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// Make sure CSP works.
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await page
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.addScriptTag({ content: 'window.e = 10;' })
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.catch((error) => void error);
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expect(await page.evaluate(() => (window as any).e)).toBe(undefined);
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});
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});
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describe('Frame.evaluate', function () {
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it('should have different execution contexts', async () => {
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const { page, server } = getTestState();
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await page.goto(server.EMPTY_PAGE);
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await utils.attachFrame(page, 'frame1', server.EMPTY_PAGE);
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expect(page.frames().length).toBe(2);
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await page.frames()[0].evaluate(() => (globalThis.FOO = 'foo'));
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await page.frames()[1].evaluate(() => (globalThis.FOO = 'bar'));
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expect(await page.frames()[0].evaluate(() => globalThis.FOO)).toBe('foo');
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expect(await page.frames()[1].evaluate(() => globalThis.FOO)).toBe('bar');
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});
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it('should have correct execution contexts', async () => {
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const { page, server } = getTestState();
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await page.goto(server.PREFIX + '/frames/one-frame.html');
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expect(page.frames().length).toBe(2);
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expect(
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await page.frames()[0].evaluate(() => document.body.textContent.trim())
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).toBe('');
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expect(
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await page.frames()[1].evaluate(() => document.body.textContent.trim())
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).toBe(`Hi, I'm frame`);
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});
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it('should execute after cross-site navigation', async () => {
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const { page, server } = getTestState();
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await page.goto(server.EMPTY_PAGE);
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const mainFrame = page.mainFrame();
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expect(await mainFrame.evaluate(() => window.location.href)).toContain(
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'localhost'
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);
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await page.goto(server.CROSS_PROCESS_PREFIX + '/empty.html');
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expect(await mainFrame.evaluate(() => window.location.href)).toContain(
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'127'
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);
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});
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});
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});
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