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/**
* @license
* Copyright 2021 Google Inc.
* SPDX-License-Identifier: Apache-2.0
*/
import fs from 'fs';
import path from 'path';
import expect from 'expect';
import {
type ActionResult,
type HTTPRequest,
InterceptResolutionAction,
} from 'puppeteer-core/internal/api/HTTPRequest.js';
import type {ConsoleMessage} from 'puppeteer-core/internal/common/ConsoleMessage.js';
import {getTestState, setupTestBrowserHooks} from './mocha-utils.js';
import {isFavicon, waitEvent} from './utils.js';
describe('cooperative request interception', function () {
setupTestBrowserHooks();
describe('Page.setRequestInterception', function () {
const expectedActions: ActionResult[] = ['abort', 'continue', 'respond'];
for (const expectedAction of expectedActions) {
it(`should cooperatively ${expectedAction} by priority`, async () => {
const {page, server} = await getTestState();
const actionResults: ActionResult[] = [];
await page.setRequestInterception(true);
page.on('request', request => {
if (request.url().endsWith('.css')) {
void request.continue(
{headers: {...request.headers(), xaction: 'continue'}},
expectedAction === 'continue' ? 1 : 0
);
} else {
void request.continue({}, 0);
}
});
page.on('request', request => {
if (request.url().endsWith('.css')) {
void request.respond(
{headers: {xaction: 'respond'}},
expectedAction === 'respond' ? 1 : 0
);
} else {
void request.continue({}, 0);
}
});
page.on('request', request => {
if (request.url().endsWith('.css')) {
void request.abort('aborted', expectedAction === 'abort' ? 1 : 0);
} else {
void request.continue({}, 0);
}
});
page.on('response', response => {
const {xaction} = response!.headers();
if (response!.url().endsWith('.css') && !!xaction) {
actionResults.push(xaction as ActionResult);
}
});
page.on('requestfailed', request => {
if (request.url().endsWith('.css')) {
actionResults.push('abort');
}
});
const response = (await (async () => {
if (expectedAction === 'continue') {
const [serverRequest, response] = await Promise.all([
server.waitForRequest('/one-style.css'),
page.goto(server.PREFIX + '/one-style.html'),
]);
actionResults.push(
serverRequest.headers['xaction'] as ActionResult
);
return response;
} else {
return await page.goto(server.PREFIX + '/one-style.html');
}
})())!;
expect(actionResults).toHaveLength(1);
expect(actionResults[0]).toBe(expectedAction);
expect(response!.ok()).toBe(true);
});
}
it('should intercept', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
let requestError;
page.on('request', request => {
if (isFavicon(request)) {
void request.continue({}, 0);
return;
}
try {
expect(request).toBeTruthy();
expect(request.url()).toContain('empty.html');
expect(request.headers()['user-agent']).toBeTruthy();
expect(request.method()).toBe('GET');
expect(request.postData()).toBe(undefined);
expect(request.isNavigationRequest()).toBe(true);
expect(request.resourceType()).toBe('document');
expect(request.frame()!.url()).toBe('about:blank');
expect(request.frame() === page.mainFrame()).toBe(true);
} catch (error) {
requestError = error;
} finally {
void request.continue({}, 0);
}
});
const response = (await page.goto(server.EMPTY_PAGE))!;
if (requestError) {
throw requestError;
}
expect(response.ok()).toBe(true);
expect(response.remoteAddress().port).toBe(server.PORT);
});
it('should work when POST is redirected with 302', async () => {
const {page, server} = await getTestState();
server.setRedirect('/rredirect', '/empty.html');
await page.goto(server.EMPTY_PAGE);
await page.setRequestInterception(true);
page.on('request', request => {
return request.continue({}, 0);
});
await page.setContent(`
<form action='/rredirect' method='post'>
<input type="hidden" id="foo" name="foo" value="FOOBAR">
</form>
`);
await Promise.all([
page.$eval('form', form => {
return (form as HTMLFormElement).submit();
}),
page.waitForNavigation(),
]);
});
it('should work when header manipulation headers with redirect', async () => {
const {page, server} = await getTestState();
server.setRedirect('/rrredirect', '/empty.html');
await page.setRequestInterception(true);
let requestError;
page.on('request', request => {
const headers = Object.assign({}, request.headers(), {
foo: 'bar',
});
void request.continue({headers}, 0);
try {
expect(request.continueRequestOverrides()).toEqual({headers});
} catch (error) {
requestError = error;
}
});
// Make sure that the goto does not time out.
await page.goto(server.PREFIX + '/rrredirect');
if (requestError) {
throw requestError;
}
});
it('should be able to remove headers', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
page.on('request', request => {
const headers = Object.assign({}, request.headers(), {
foo: 'bar',
origin: undefined, // remove "origin" header
});
void request.continue({headers}, 0);
});
const [serverRequest] = await Promise.all([
server.waitForRequest('/empty.html'),
page.goto(server.PREFIX + '/empty.html'),
]);
expect(serverRequest.headers.origin).toBe(undefined);
});
it('should contain referer header', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
const requests: HTTPRequest[] = [];
page.on('request', request => {
if (!isFavicon(request)) {
requests.push(request);
}
void request.continue({}, 0);
});
await page.goto(server.PREFIX + '/one-style.html');
expect(requests[1]!.url()).toContain('/one-style.css');
expect(requests[1]!.headers()['referer']).toContain('/one-style.html');
});
it('should properly return navigation response when URL has cookies', async () => {
const {page, server} = await getTestState();
// Setup cookie.
await page.goto(server.EMPTY_PAGE);
await page.setCookie({name: 'foo', value: 'bar'});
// Setup request interception.
await page.setRequestInterception(true);
page.on('request', request => {
return request.continue({}, 0);
});
const response = await page.reload();
expect(response!.status()).toBe(200);
});
it('should stop intercepting', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
page.once('request', request => {
return request.continue({}, 0);
});
await page.goto(server.EMPTY_PAGE);
await page.setRequestInterception(false);
await page.goto(server.EMPTY_PAGE);
});
it('should show custom HTTP headers', async () => {
const {page, server} = await getTestState();
await page.setExtraHTTPHeaders({
foo: 'bar',
});
await page.setRequestInterception(true);
let requestError;
page.on('request', request => {
try {
expect(request.headers()['foo']).toBe('bar');
} catch (error) {
requestError = error;
} finally {
void request.continue({}, 0);
}
});
const response = await page.goto(server.EMPTY_PAGE);
if (requestError) {
throw requestError;
}
expect(response!.ok()).toBe(true);
});
it('should work with redirect inside sync XHR', async () => {
const {page, server} = await getTestState();
await page.goto(server.EMPTY_PAGE);
server.setRedirect('/logo.png', '/pptr.png');
await page.setRequestInterception(true);
page.on('request', request => {
return request.continue({}, 0);
});
const status = await page.evaluate(async () => {
const request = new XMLHttpRequest();
request.open('GET', '/logo.png', false); // `false` makes the request synchronous
request.send(null);
return request.status;
});
expect(status).toBe(200);
});
it('should work with custom referer headers', async () => {
const {page, server} = await getTestState();
await page.setExtraHTTPHeaders({referer: server.EMPTY_PAGE});
await page.setRequestInterception(true);
let requestError;
page.on('request', request => {
try {
expect(request.headers()['referer']).toBe(server.EMPTY_PAGE);
} catch (error) {
requestError = error;
} finally {
void request.continue({}, 0);
}
});
const response = await page.goto(server.EMPTY_PAGE);
if (requestError) {
throw requestError;
}
expect(response!.ok()).toBe(true);
});
it('should be abortable', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
page.on('request', request => {
if (request.url().endsWith('.css')) {
void request.abort('failed', 0);
} else {
void request.continue({}, 0);
}
});
let failedRequests = 0;
page.on('requestfailed', () => {
return ++failedRequests;
});
const response = await page.goto(server.PREFIX + '/one-style.html');
expect(response!.ok()).toBe(true);
expect(response!.request().failure()).toBe(null);
expect(failedRequests).toBe(1);
});
it('should be able to access the error reason', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
page.on('request', request => {
void request.abort('failed', 0);
});
let abortReason = null;
page.on('request', request => {
abortReason = request.abortErrorReason();
void request.continue({}, 0);
});
await page.goto(server.EMPTY_PAGE).catch(() => {});
expect(abortReason).toBe('Failed');
});
it('should be abortable with custom error codes', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
page.on('request', request => {
void request.abort('internetdisconnected', 0);
});
const [failedRequest] = await Promise.all([
waitEvent<HTTPRequest>(page, 'requestfailed'),
page.goto(server.EMPTY_PAGE).catch(() => {}),
]);
expect(failedRequest).toBeTruthy();
expect(failedRequest.failure()!.errorText).toBe(
'net::ERR_INTERNET_DISCONNECTED'
);
});
it('should send referer', async () => {
const {page, server} = await getTestState();
await page.setExtraHTTPHeaders({
});
await page.setRequestInterception(true);
page.on('request', request => {
return request.continue({}, 0);
});
const [request] = await Promise.all([
server.waitForRequest('/grid.html'),
page.goto(server.PREFIX + '/grid.html'),
]);
});
it('should fail navigation when aborting main resource', async () => {
const {page, server, isChrome} = await getTestState();
await page.setRequestInterception(true);
page.on('request', request => {
return request.abort('failed', 0);
});
let error!: Error;
await page.goto(server.EMPTY_PAGE).catch(error_ => {
return (error = error_);
});
expect(error).toBeTruthy();
if (isChrome) {
expect(error.message).toContain('net::ERR_FAILED');
} else {
expect(error.message).toContain('NS_ERROR_ABORT');
}
});
it('should work with redirects', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
const requests: HTTPRequest[] = [];
page.on('request', request => {
void request.continue({}, 0);
requests.push(request);
});
server.setRedirect(
'/non-existing-page.html',
'/non-existing-page-2.html'
);
server.setRedirect(
'/non-existing-page-2.html',
'/non-existing-page-3.html'
);
server.setRedirect(
'/non-existing-page-3.html',
'/non-existing-page-4.html'
);
server.setRedirect('/non-existing-page-4.html', '/empty.html');
const response = await page.goto(
server.PREFIX + '/non-existing-page.html'
);
expect(response!.status()).toBe(200);
expect(response!.url()).toContain('empty.html');
expect(requests).toHaveLength(5);
expect(requests[2]!.resourceType()).toBe('document');
// Check redirect chain
const redirectChain = response!.request().redirectChain();
expect(redirectChain).toHaveLength(4);
expect(redirectChain[0]!.url()).toContain('/non-existing-page.html');
expect(redirectChain[2]!.url()).toContain('/non-existing-page-3.html');
for (let i = 0; i < redirectChain.length; ++i) {
const request = redirectChain[i]!;
expect(request.isNavigationRequest()).toBe(true);
expect(request.redirectChain().indexOf(request)).toBe(i);
}
});
it('should work with redirects for subresources', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
const requests: HTTPRequest[] = [];
page.on('request', request => {
void request.continue({}, 0);
if (!isFavicon(request)) {
requests.push(request);
}
});
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) => {
return res.end('body {box-sizing: border-box; }');
});
const response = await page.goto(server.PREFIX + '/one-style.html');
expect(response!.status()).toBe(200);
expect(response!.url()).toContain('one-style.html');
expect(requests).toHaveLength(5);
expect(requests[0]!.resourceType()).toBe('document');
expect(requests[1]!.resourceType()).toBe('stylesheet');
// Check redirect chain
const redirectChain = requests[1]!.redirectChain();
expect(redirectChain).toHaveLength(3);
expect(redirectChain[0]!.url()).toContain('/one-style.css');
expect(redirectChain[2]!.url()).toContain('/three-style.css');
});
it('should be able to abort redirects', async () => {
const {page, server, isChrome} = await getTestState();
await page.setRequestInterception(true);
server.setRedirect('/non-existing.json', '/non-existing-2.json');
server.setRedirect('/non-existing-2.json', '/simple.html');
page.on('request', request => {
if (request.url().includes('non-existing-2')) {
void request.abort('failed', 0);
} else {
void request.continue({}, 0);
}
});
await page.goto(server.EMPTY_PAGE);
const result = await page.evaluate(async () => {
try {
return await fetch('/non-existing.json');
} catch (error) {
return (error as Error).message;
}
});
if (isChrome) {
expect(result).toContain('Failed to fetch');
} else {
expect(result).toContain('NetworkError');
}
});
it('should work with equal requests', async () => {
const {page, server} = await getTestState();
await page.goto(server.EMPTY_PAGE);
let responseCount = 1;
server.setRoute('/zzz', (_req, res) => {
return res.end(responseCount++ * 11 + '');
});
await page.setRequestInterception(true);
let spinner = false;
// Cancel 2nd request.
page.on('request', request => {
if (isFavicon(request)) {
void request.continue({}, 0);
return;
}
void (spinner ? request.abort('failed', 0) : request.continue({}, 0));
spinner = !spinner;
});
const results = await page.evaluate(() => {
return Promise.all([
fetch('/zzz')
.then(response => {
return response!.text();
})
.catch(() => {
return 'FAILED';
}),
fetch('/zzz')
.then(response => {
return response!.text();
})
.catch(() => {
return 'FAILED';
}),
fetch('/zzz')
.then(response => {
return response!.text();
})
.catch(() => {
return 'FAILED';
}),
]);
});
expect(results).toEqual(['11', 'FAILED', '22']);
});
it('should navigate to dataURL and fire dataURL requests', async () => {
const {page} = await getTestState();
await page.setRequestInterception(true);
const requests: HTTPRequest[] = [];
page.on('request', request => {
requests.push(request);
void request.continue({}, 0);
});
const dataURL = 'data:text/html,<div>yo</div>';
const response = await page.goto(dataURL);
expect(response!.status()).toBe(200);
expect(requests).toHaveLength(1);
expect(requests[0]!.url()).toBe(dataURL);
});
it('should be able to fetch dataURL and fire dataURL requests', async () => {
const {page, server} = await getTestState();
await page.goto(server.EMPTY_PAGE);
await page.setRequestInterception(true);
const requests: HTTPRequest[] = [];
page.on('request', request => {
!isFavicon(request) && requests.push(request);
void request.continue({}, 0);
});
const dataURL = 'data:text/html,<div>yo</div>';
const text = await page.evaluate((url: string) => {
return fetch(url).then(r => {
return r.text();
});
}, dataURL);
expect(text).toBe('<div>yo</div>');
expect(requests).toHaveLength(1);
expect(requests[0]!.url()).toBe(dataURL);
});
it('should navigate to URL with hash and fire requests without hash', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
const requests: HTTPRequest[] = [];
page.on('request', request => {
requests.push(request);
void request.continue({}, 0);
});
const response = await page.goto(server.EMPTY_PAGE + '#hash');
expect(response!.status()).toBe(200);
expect(response!.url()).toBe(server.EMPTY_PAGE);
expect(requests).toHaveLength(1);
expect(requests[0]!.url()).toBe(server.EMPTY_PAGE);
});
it('should work with encoded server', async () => {
const {page, server} = await getTestState();
// The requestWillBeSent will report encoded URL, whereas interception will
// report URL as-is. @see crbug.com/759388
await page.setRequestInterception(true);
page.on('request', request => {
return request.continue({}, 0);
});
const response = await page.goto(
server.PREFIX + '/some nonexisting page'
);
expect(response!.status()).toBe(404);
});
it('should work with badly encoded server', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
server.setRoute('/malformed?rnd=%911', (_req, res) => {
return res.end();
});
page.on('request', request => {
return request.continue({}, 0);
});
const response = await page.goto(server.PREFIX + '/malformed?rnd=%911');
expect(response!.status()).toBe(200);
});
it('should work with encoded server - 2', async () => {
const {page, server} = await getTestState();
// The requestWillBeSent will report URL as-is, whereas interception will
// report encoded URL for stylesheet. @see crbug.com/759388
await page.setRequestInterception(true);
const requests: HTTPRequest[] = [];
page.on('request', request => {
void request.continue({}, 0);
requests.push(request);
});
const response = await page.goto(
`data:text/html,<link rel="stylesheet" href="${server.PREFIX}/fonts?helvetica|arial"/>`
);
expect(response!.status()).toBe(200);
expect(requests).toHaveLength(2);
expect(requests[1]!.response()!.status()).toBe(404);
});
it('should not throw "Invalid Interception Id" if the request was cancelled', async () => {
const {page, server} = await getTestState();
await page.setContent('<iframe></iframe>');
await page.setRequestInterception(true);
let request!: HTTPRequest;
page.on('request', async r => {
return (request = r);
});
void (page.$eval(
'iframe',
(frame, url) => {
return ((frame as HTMLIFrameElement).src = url as string);
},
server.EMPTY_PAGE
),
// Wait for request interception.
await waitEvent(page, 'request'));
// Delete frame to cause request to be canceled.
await page.$eval('iframe', frame => {
return frame.remove();
});
let error!: Error;
await request.continue({}, 0).catch(error_ => {
return (error = error_);
});
expect(error).toBeUndefined();
});
it('should throw if interception is not enabled', async () => {
const {page, server} = await getTestState();
let error!: Error;
page.on('request', async request => {
try {
await request.continue({}, 0);
} catch (error_) {
error = error_ as Error;
}
});
await page.goto(server.EMPTY_PAGE);
expect(error.message).toContain('Request Interception is not enabled');
});
it('should work with file URLs', async () => {
const {page} = await getTestState();
await page.setRequestInterception(true);
const urls = new Set();
page.on('request', request => {
urls.add(request.url().split('/').pop());
void request.continue({}, 0);
});
await page.goto(
pathToFileURL(path.join(__dirname, '../assets', 'one-style.html'))
);
expect(urls.size).toBe(2);
expect(urls.has('one-style.html')).toBe(true);
expect(urls.has('one-style.css')).toBe(true);
});
it('should not cache if cache disabled', async () => {
const {page, server} = await getTestState();
// Load and re-load to make sure it's cached.
await page.goto(server.PREFIX + '/cached/one-style.html');
await page.setRequestInterception(true);
await page.setCacheEnabled(false);
page.on('request', request => {
return request.continue({}, 0);
});
const cached: HTTPRequest[] = [];
page.on('requestservedfromcache', r => {
return cached.push(r);
});
await page.reload();
expect(cached).toHaveLength(0);
});
it('should cache if cache enabled', async () => {
const {page, server} = await getTestState();
// Load and re-load to make sure it's cached.
await page.goto(server.PREFIX + '/cached/one-style.html');
await page.setRequestInterception(true);
await page.setCacheEnabled(true);
page.on('request', request => {
return request.continue({}, 0);
});
const cached: HTTPRequest[] = [];
page.on('requestservedfromcache', r => {
return cached.push(r);
});
await page.reload();
expect(cached).toHaveLength(1);
});
it('should load fonts if cache enabled', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
await page.setCacheEnabled(true);
page.on('request', request => {
return request.continue({}, 0);
});
await page.goto(server.PREFIX + '/cached/one-style-font.html');
await page.waitForResponse(r => {
return r.url().endsWith('/one-style.woff');
});
});
});
describe('Request.continue', function () {
it('should work', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
page.on('request', request => {
return request.continue({}, 0);
});
await page.goto(server.EMPTY_PAGE);
});
it('should amend HTTP headers', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
page.on('request', request => {
const headers = Object.assign({}, request.headers());
headers['FOO'] = 'bar';
void request.continue({headers}, 0);
});
await page.goto(server.EMPTY_PAGE);
const [request] = await Promise.all([
server.waitForRequest('/sleep.zzz'),
page.evaluate(() => {
return fetch('/sleep.zzz');
}),
]);
expect(request.headers['foo']).toBe('bar');
});
it('should redirect in a way non-observable to page', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
page.on('request', request => {
const redirectURL = request.url().includes('/empty.html')
? server.PREFIX + '/consolelog.html'
: undefined;
void request.continue({url: redirectURL}, 0);
});
const [consoleMessage] = await Promise.all([
waitEvent<ConsoleMessage>(page, 'console'),
page.goto(server.EMPTY_PAGE),
]);
expect(page.url()).toBe(server.EMPTY_PAGE);
expect(consoleMessage.text()).toBe('yellow');
});
it('should amend method', async () => {
const {page, server} = await getTestState();
await page.goto(server.EMPTY_PAGE);
await page.setRequestInterception(true);
page.on('request', request => {
void request.continue({method: 'POST'}, 0);
});
const [request] = await Promise.all([
server.waitForRequest('/sleep.zzz'),
page.evaluate(() => {
return fetch('/sleep.zzz');
}),
]);
expect(request.method).toBe('POST');
});
it('should amend post data', async () => {
const {page, server} = await getTestState();
await page.goto(server.EMPTY_PAGE);
await page.setRequestInterception(true);
page.on('request', request => {
void request.continue({postData: 'doggo'}, 0);
});
const [serverRequest] = await Promise.all([
server.waitForRequest('/sleep.zzz'),
page.evaluate(() => {
return fetch('/sleep.zzz', {method: 'POST', body: 'birdy'});
}),
]);
expect(await serverRequest.postBody).toBe('doggo');
});
it('should amend both post data and method on navigation', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
page.on('request', request => {
void request.continue({method: 'POST', postData: 'doggo'}, 0);
});
const [serverRequest] = await Promise.all([
server.waitForRequest('/empty.html'),
page.goto(server.EMPTY_PAGE),
]);
expect(serverRequest.method).toBe('POST');
expect(await serverRequest.postBody).toBe('doggo');
});
});
describe('Request.respond', function () {
it('should work', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
page.on('request', request => {
void request.respond(
{
status: 201,
headers: {
foo: 'bar',
},
body: 'Yo, page!',
},
0
);
});
const response = await page.goto(server.EMPTY_PAGE);
expect(response!.status()).toBe(201);
expect(response!.headers()['foo']).toBe('bar');
expect(
await page.evaluate(() => {
return document.body.textContent;
})
).toBe('Yo, page!');
});
it('should be able to access the response', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
page.on('request', request => {
void request.respond(
{
status: 200,
body: 'Yo, page!',
},
0
);
});
let response = null;
page.on('request', request => {
response = request.responseForRequest();
void request.continue({}, 0);
});
await page.goto(server.EMPTY_PAGE);
expect(response).toEqual({status: 200, body: 'Yo, page!'});
});
it('should work with status code 422', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
page.on('request', request => {
void request.respond(
{
status: 422,
body: 'Yo, page!',
},
0
);
});
const response = await page.goto(server.EMPTY_PAGE);
expect(response!.status()).toBe(422);
expect(response!.statusText()).toBe('Unprocessable Entity');
expect(
await page.evaluate(() => {
return document.body.textContent;
})
).toBe('Yo, page!');
});
it('should redirect', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
page.on('request', request => {
if (!request.url().includes('rrredirect')) {
void request.continue({}, 0);
return;
}
void request.respond(
{
status: 302,
headers: {
location: server.EMPTY_PAGE,
},
},
0
);
});
const response = await page.goto(server.PREFIX + '/rrredirect');
expect(response!.request().redirectChain()).toHaveLength(1);
expect(response!.request().redirectChain()[0]!.url()).toBe(
server.PREFIX + '/rrredirect'
);
expect(response!.url()).toBe(server.EMPTY_PAGE);
});
it('should allow mocking binary responses', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
page.on('request', request => {
const imageBuffer = fs.readFileSync(
path.join(__dirname, '../assets', 'pptr.png')
);
void request.respond(
{
contentType: 'image/png',
body: imageBuffer,
},
0
);
});
await page.evaluate(PREFIX => {
const img = document.createElement('img');
img.src = PREFIX + '/does-not-exist.png';
document.body.appendChild(img);
return new Promise(fulfill => {
return (img.onload = fulfill);
});
}, server.PREFIX);
using img = (await page.$('img'))!;
expect(await img.screenshot()).toBeGolden('mock-binary-response.png');
});
it('should stringify intercepted request response headers', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
page.on('request', request => {
void request.respond(
{
status: 200,
headers: {
foo: true,
},
body: 'Yo, page!',
},
0
);
});
const response = await page.goto(server.EMPTY_PAGE);
expect(response!.status()).toBe(200);
const headers = response!.headers();
expect(headers['foo']).toBe('true');
expect(
await page.evaluate(() => {
return document.body.textContent;
})
).toBe('Yo, page!');
});
it('should indicate already-handled if an intercept has been handled', async () => {
const {page, server} = await getTestState();
await page.setRequestInterception(true);
page.on('request', request => {
void request.continue();
});
let requestError;
page.on('request', request => {
try {
expect(request.isInterceptResolutionHandled()).toBeTruthy();
} catch (error) {
requestError = error;
}
});
page.on('request', request => {
const {action} = request.interceptResolutionState();
try {
expect(action).toBe(InterceptResolutionAction.AlreadyHandled);
} catch (error) {
requestError = error;
}
});
await page.goto(server.EMPTY_PAGE);
if (requestError) {
throw requestError;
}
});
});
});
function pathToFileURL(path: string): string {
let pathName = path.replace(/\\/g, '/');
// Windows drive letter must be prefixed with a slash.
if (!pathName.startsWith('/')) {
pathName = '/' + pathName;
}
return 'file://' + pathName;
}