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playwright/tests/library/channels.spec.ts

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/**
* Copyright 2017 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 domain from 'domain';
import { playwrightTest, expect } from '../config/browserTest';
// Use something worker-scoped (e.g. expectScopeState) forces a new worker for this file.
// Otherwise, a browser launched for other tests in this worker will affect the expectations.
const it = playwrightTest.extend<{}, { expectScopeState: (object: any, golden: any) => void }>({
expectScopeState: [async ({ toImplInWorkerScope }, use) => {
await use((object, golden) => {
golden = trimGuids(golden);
const remoteRoot = toImplInWorkerScope();
const remoteState = trimGuids(remoteRoot._debugScopeState());
const localRoot = object._connection._rootObject;
const localState = trimGuids(localRoot._debugScopeState());
expect(localState).toEqual(golden);
expect(remoteState).toEqual(golden);
});
}, { scope: 'worker' }],
});
it.skip(({ mode }) => mode !== 'default');
it.skip(({ video }) => video === 'on', 'Extra video artifacts in the objects list');
it('should scope context handles', async ({ browserType, server, expectScopeState }) => {
const browser = await browserType.launch();
const GOLDEN_PRECONDITION = {
_guid: '',
objects: [
{ _guid: 'android', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [
{ _guid: 'browser', objects: [] }
] },
{ _guid: 'electron', objects: [] },
{ _guid: 'localUtils', objects: [] },
{ _guid: 'Playwright', objects: [] },
{ _guid: 'selectors', objects: [] },
]
};
expectScopeState(browser, GOLDEN_PRECONDITION);
const context = await browser.newContext();
const page = await context.newPage();
// Firefox Beta 96 yields a console warning for the pages that
// don't use `<!DOCTYPE HTML> tag.
await page.goto(server.PREFIX + '/empty-standard-mode.html');
expectScopeState(browser, {
_guid: '',
objects: [
{ _guid: 'android', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [
{ _guid: 'browser', objects: [
{ _guid: 'browser-context', objects: [
{ _guid: 'page', objects: [
{ _guid: 'frame', objects: [] },
{ _guid: 'request', objects: [
{ _guid: 'response', objects: [] },
] },
] },
{ _guid: 'request-context', objects: [] },
{ _guid: 'tracing', objects: [] }
] },
] },
] },
{ _guid: 'electron', objects: [] },
{ _guid: 'localUtils', objects: [] },
{ _guid: 'Playwright', objects: [] },
{ _guid: 'selectors', objects: [] },
]
});
await context.close();
expectScopeState(browser, GOLDEN_PRECONDITION);
await browser.close();
});
it('should scope CDPSession handles', async ({ browserType, browserName, expectScopeState }) => {
it.skip(browserName !== 'chromium');
const browser = await browserType.launch();
const GOLDEN_PRECONDITION = {
_guid: '',
objects: [
{ _guid: 'android', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [
{ _guid: 'browser', objects: [] }
] },
{ _guid: 'electron', objects: [] },
{ _guid: 'localUtils', objects: [] },
{ _guid: 'Playwright', objects: [] },
{ _guid: 'selectors', objects: [] },
]
};
expectScopeState(browserType, GOLDEN_PRECONDITION);
const session = await browser.newBrowserCDPSession();
expectScopeState(browserType, {
_guid: '',
objects: [
{ _guid: 'android', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [
{ _guid: 'browser', objects: [
{ _guid: 'cdp-session', objects: [] },
] },
] },
{ _guid: 'electron', objects: [] },
{ _guid: 'localUtils', objects: [] },
{ _guid: 'Playwright', objects: [] },
{ _guid: 'selectors', objects: [] },
]
});
await session.detach();
expectScopeState(browserType, GOLDEN_PRECONDITION);
await browser.close();
});
it('should scope browser handles', async ({ browserType, expectScopeState }) => {
const GOLDEN_PRECONDITION = {
_guid: '',
objects: [
{ _guid: 'android', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'electron', objects: [] },
{ _guid: 'localUtils', objects: [] },
{ _guid: 'Playwright', objects: [] },
{ _guid: 'selectors', objects: [] },
]
};
expectScopeState(browserType, GOLDEN_PRECONDITION);
const browser = await browserType.launch();
await browser.newContext();
expectScopeState(browserType, {
_guid: '',
objects: [
{ _guid: 'android', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [
{
_guid: 'browser', objects: [
{ _guid: 'browser-context', objects: [
{ _guid: 'request-context', objects: [] },
{ _guid: 'tracing', objects: [] },
] },
]
},
]
},
{ _guid: 'electron', objects: [] },
{ _guid: 'localUtils', objects: [] },
{ _guid: 'Playwright', objects: [] },
{ _guid: 'selectors', objects: [] },
]
});
await browser.close();
expectScopeState(browserType, GOLDEN_PRECONDITION);
});
it('should not generate dispatchers for subresources w/o listeners', async ({ page, server, browserType, expectScopeState }) => {
server.setRedirect('/one-style.css', '/two-style.css');
server.setRedirect('/two-style.css', '/three-style.css');
server.setRedirect('/three-style.css', '/four-style.css');
server.setRoute('/four-style.css', (req, res) => res.end('body {box-sizing: border-box; }'));
await page.goto(server.PREFIX + '/one-style.html');
expectScopeState(browserType, {
_guid: '',
objects: [
{ _guid: 'android', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [] },
{ _guid: 'browser-type', objects: [
{
_guid: 'browser', objects: [
{ _guid: 'browser-context', objects: [
{
_guid: 'page', objects: [
{ _guid: 'frame', objects: [] },
{ _guid: 'request', objects: [
{ _guid: 'response', objects: [] },
] },
]
},
{ _guid: 'request-context', objects: [] },
{ _guid: 'tracing', objects: [] }
] },
]
}],
},
{ _guid: 'electron', objects: [] },
{ _guid: 'localUtils', objects: [] },
{ _guid: 'Playwright', objects: [] },
{ _guid: 'selectors', objects: [] },
]
});
});
it('should work with the domain module', async ({ browserType, server, browserName, channel }) => {
const local = domain.create();
local.run(() => { });
let err;
local.on('error', e => err = e);
const browser = await browserType.launch();
const page = await browser.newPage();
expect(await page.evaluate(() => 1 + 1)).toBe(2);
// At the time of writing, we used to emit 'error' event for WebSockets,
// which failed with 'domain' module.
let callback;
const result = new Promise(f => callback = f);
page.on('websocket', ws => ws.on('socketerror', callback));
void page.evaluate(port => {
new WebSocket('ws://localhost:' + port + '/bogus-ws');
}, server.PORT);
const message = await result;
if (browserName === 'firefox')
expect(message).toBe('CLOSE_ABNORMAL');
else
expect(message).toContain(channel?.includes('msedge') ? '' : ': 400');
await browser.close();
if (err)
throw err;
});
it('exposeFunction should not leak', async ({ page, expectScopeState, server }) => {
await page.goto(server.EMPTY_PAGE);
let called = 0;
await page.exposeFunction('myFunction', () => ++called);
for (let i = 0; i < 10; ++i)
await page.evaluate(() => (window as any).myFunction({ foo: 'bar' }));
expect(called).toBe(10);
expectScopeState(page, {
'_guid': '',
'objects': [
{
'_guid': 'android',
'objects': [],
},
{
'_guid': 'browser-type',
'objects': [],
},
{
'_guid': 'browser-type',
'objects': [],
},
{
'_guid': 'browser-type',
'objects': [],
},
{
'_guid': 'browser-type',
'objects': [],
},
{
'_guid': 'browser-type',
'objects': [
{
'_guid': 'browser',
'objects': [
{
'_guid': 'browser-context',
'objects': [
{
'_guid': 'page',
'objects': [
{
'_guid': 'frame',
'objects': [],
},
{
'_guid': 'request',
'objects': [
{
'_guid': 'response',
'objects': [],
},
],
},
],
},
{
'_guid': 'request-context',
'objects': [],
},
{
'_guid': 'tracing',
'objects': [],
},
],
},
],
},
],
},
{
'_guid': 'electron',
'objects': [],
},
{
'_guid': 'localUtils',
'objects': [],
},
{
'_guid': 'Playwright',
'objects': [],
},
{
'_guid': 'selectors',
'objects': [],
},
],
});
});
function compareObjects(a, b) {
if (a._guid !== b._guid)
return a._guid.localeCompare(b._guid);
return a.objects.length - b.objects.length;
}
function trimGuids(object) {
if (Array.isArray(object))
return object.map(trimGuids).sort(compareObjects);
if (typeof object === 'object') {
const result = {};
for (const key in object)
result[key] = trimGuids(object[key]);
return result;
}
if (typeof object === 'string')
return object ? object.match(/[^@]+/)[0] : '';
return object;
}
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