puppeteer/test/jshandle.spec.js

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/**
* Copyright 2018 Google Inc. All rights reserved.
*
* 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.
*/
module.exports.addTests = function({testRunner, expect}) {
const {describe, xdescribe, fdescribe} = testRunner;
const {it, fit, xit, it_fails_ffox} = testRunner;
const {beforeAll, beforeEach, afterAll, afterEach} = testRunner;
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describe('Page.evaluateHandle', function() {
it_fails_ffox('should work', async({page, server}) => {
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const windowHandle = await page.evaluateHandle(() => window);
expect(windowHandle).toBeTruthy();
});
it('should accept object handle as an argument', async({page, server}) => {
const navigatorHandle = await page.evaluateHandle(() => navigator);
const text = await page.evaluate(e => e.userAgent, navigatorHandle);
expect(text).toContain('Mozilla');
});
it('should accept object handle to primitive types', async({page, server}) => {
const aHandle = await page.evaluateHandle(() => 5);
const isFive = await page.evaluate(e => Object.is(e, 5), aHandle);
expect(isFive).toBeTruthy();
});
it_fails_ffox('should warn on nested object handles', async({page, server}) => {
const aHandle = await page.evaluateHandle(() => document.body);
let error = null;
await page.evaluateHandle(
opts => opts.elem.querySelector('p'),
{ elem: aHandle }
).catch(e => error = e);
expect(error.message).toContain('Are you passing a nested JSHandle?');
});
it('should accept object handle to unserializable value', async({page, server}) => {
const aHandle = await page.evaluateHandle(() => Infinity);
expect(await page.evaluate(e => Object.is(e, Infinity), aHandle)).toBe(true);
});
it('should use the same JS wrappers', async({page, server}) => {
const aHandle = await page.evaluateHandle(() => {
window.FOO = 123;
return window;
});
expect(await page.evaluate(e => e.FOO, aHandle)).toBe(123);
});
it('should work with primitives', async({page, server}) => {
const aHandle = await page.evaluateHandle(() => {
window.FOO = 123;
return window;
});
expect(await page.evaluate(e => e.FOO, aHandle)).toBe(123);
});
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});
describe('JSHandle.getProperty', function() {
it('should work', async({page, server}) => {
const aHandle = await page.evaluateHandle(() => ({
one: 1,
two: 2,
three: 3
}));
const twoHandle = await aHandle.getProperty('two');
expect(await twoHandle.jsonValue()).toEqual(2);
});
});
describe('JSHandle.jsonValue', function() {
it('should work', async({page, server}) => {
const aHandle = await page.evaluateHandle(() => ({foo: 'bar'}));
const json = await aHandle.jsonValue();
expect(json).toEqual({foo: 'bar'});
});
it_fails_ffox('should not work with dates', async({page, server}) => {
const dateHandle = await page.evaluateHandle(() => new Date('2017-09-26T00:00:00.000Z'));
const json = await dateHandle.jsonValue();
expect(json).toEqual({});
});
it_fails_ffox('should throw for circular objects', async({page, server}) => {
const windowHandle = await page.evaluateHandle('window');
let error = null;
await windowHandle.jsonValue().catch(e => error = e);
expect(error.message).toContain('Object reference chain is too long');
});
});
describe('JSHandle.getProperties', function() {
it('should work', async({page, server}) => {
const aHandle = await page.evaluateHandle(() => ({
foo: 'bar'
}));
const properties = await aHandle.getProperties();
const foo = properties.get('foo');
expect(foo).toBeTruthy();
expect(await foo.jsonValue()).toBe('bar');
});
it('should return even non-own properties', async({page, server}) => {
const aHandle = await page.evaluateHandle(() => {
class A {
constructor() {
this.a = '1';
}
}
class B extends A {
constructor() {
super();
this.b = '2';
}
}
return new B();
});
const properties = await aHandle.getProperties();
expect(await properties.get('a').jsonValue()).toBe('1');
expect(await properties.get('b').jsonValue()).toBe('2');
});
});
describe('JSHandle.asElement', function() {
it('should work', async({page, server}) => {
const aHandle = await page.evaluateHandle(() => document.body);
const element = aHandle.asElement();
expect(element).toBeTruthy();
});
it('should return null for non-elements', async({page, server}) => {
const aHandle = await page.evaluateHandle(() => 2);
const element = aHandle.asElement();
expect(element).toBeFalsy();
});
it('should return ElementHandle for TextNodes', async({page, server}) => {
await page.setContent('<div>ee!</div>');
const aHandle = await page.evaluateHandle(() => document.querySelector('div').firstChild);
const element = aHandle.asElement();
expect(element).toBeTruthy();
expect(await page.evaluate(e => e.nodeType === HTMLElement.TEXT_NODE, element));
});
it('should work with nullified Node', async({page, server}) => {
await page.setContent('<section>test</section>');
await page.evaluate(() => delete Node);
const handle = await page.evaluateHandle(() => document.querySelector('section'));
const element = handle.asElement();
expect(element).not.toBe(null);
});
});
describe('JSHandle.toString', function() {
it('should work for primitives', async({page, server}) => {
const numberHandle = await page.evaluateHandle(() => 2);
expect(numberHandle.toString()).toBe('JSHandle:2');
const stringHandle = await page.evaluateHandle(() => 'a');
expect(stringHandle.toString()).toBe('JSHandle:a');
});
it('should work for complicated objects', async({page, server}) => {
const aHandle = await page.evaluateHandle(() => window);
expect(aHandle.toString()).toBe('JSHandle@object');
});
it('should work with different subtypes', async({page, server}) => {
expect((await page.evaluateHandle('(function(){})')).toString()).toBe('JSHandle@function');
expect((await page.evaluateHandle('12')).toString()).toBe('JSHandle:12');
expect((await page.evaluateHandle('true')).toString()).toBe('JSHandle:true');
expect((await page.evaluateHandle('undefined')).toString()).toBe('JSHandle:undefined');
expect((await page.evaluateHandle('"foo"')).toString()).toBe('JSHandle:foo');
expect((await page.evaluateHandle('Symbol()')).toString()).toBe('JSHandle@symbol');
expect((await page.evaluateHandle('new Map()')).toString()).toBe('JSHandle@map');
expect((await page.evaluateHandle('new Set()')).toString()).toBe('JSHandle@set');
expect((await page.evaluateHandle('[]')).toString()).toBe('JSHandle@array');
expect((await page.evaluateHandle('null')).toString()).toBe('JSHandle:null');
expect((await page.evaluateHandle('/foo/')).toString()).toBe('JSHandle@regexp');
expect((await page.evaluateHandle('document.body')).toString()).toBe('JSHandle@node');
expect((await page.evaluateHandle('new Date()')).toString()).toBe('JSHandle@date');
expect((await page.evaluateHandle('new WeakMap()')).toString()).toBe('JSHandle@weakmap');
expect((await page.evaluateHandle('new WeakSet()')).toString()).toBe('JSHandle@weakset');
expect((await page.evaluateHandle('new Error()')).toString()).toBe('JSHandle@error');
expect((await page.evaluateHandle('new Int32Array()')).toString()).toBe('JSHandle@typedarray');
expect((await page.evaluateHandle('new Proxy({}, {})')).toString()).toBe('JSHandle@proxy');
});
});
};