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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
*
*
* 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 fs from 'fs';
import path from 'path';
import utils from './utils.js';
import expect from 'expect';
import {
getTestState,
setupTestBrowserHooks,
setupTestPageAndContextHooks,
describeFailsFirefox,
} from './mocha-utils'; // eslint-disable-line import/extensions
describe('request interception', function () {
setupTestBrowserHooks();
setupTestPageAndContextHooks();
describe('Page.setRequestInterception', function () {
it('should intercept', async () => {
const { page, server } = getTestState();
await page.setRequestInterception(true);
page.on('request', (request) => {
if (utils.isFavicon(request)) {
request.continue();
return;
}
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() === page.mainFrame()).toBe(true);
expect(request.frame().url()).toBe('about:blank');
request.continue();
});
const response = await page.goto(server.EMPTY_PAGE);
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 } = getTestState();
server.setRedirect('/rredirect', '/empty.html');
await page.goto(server.EMPTY_PAGE);
await page.setRequestInterception(true);
page.on('request', (request) => request.continue());
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: HTMLFormElement) => form.submit()),
page.waitForNavigation(),
]);
});
it('should work when header manipulation headers with redirect', async () => {
const { page, server } = getTestState();
server.setRedirect('/rrredirect', '/empty.html');
await page.setRequestInterception(true);
page.on('request', (request) => {
const headers = Object.assign({}, request.headers(), {
foo: 'bar',
});
request.continue({ headers });
});
await page.goto(server.PREFIX + '/rrredirect');
});
it('should be able to remove headers', async () => {
const { page, server } = getTestState();
await page.setRequestInterception(true);
page.on('request', (request) => {
const headers = Object.assign({}, request.headers(), {
foo: 'bar',
origin: undefined, // remove "origin" header
});
request.continue({ headers });
});
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 } = getTestState();
await page.setRequestInterception(true);
const requests = [];
page.on('request', (request) => {
if (!utils.isFavicon(request)) requests.push(request);
request.continue();
});
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 } = 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) => request.continue());
const response = await page.reload();
expect(response.status()).toBe(200);
});
it('should stop intercepting', async () => {
const { page, server } = getTestState();
await page.setRequestInterception(true);
page.once('request', (request) => request.continue());
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 } = getTestState();
await page.setExtraHTTPHeaders({
foo: 'bar',
});
await page.setRequestInterception(true);
page.on('request', (request) => {
expect(request.headers()['foo']).toBe('bar');
request.continue();
});
const response = await page.goto(server.EMPTY_PAGE);
expect(response.ok()).toBe(true);
});
it('should work with redirect inside sync XHR', async () => {
const { page, server } = getTestState();
await page.goto(server.EMPTY_PAGE);
server.setRedirect('/logo.png', '/pptr.png');
await page.setRequestInterception(true);
page.on('request', (request) => request.continue());
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 } = getTestState();
await page.setExtraHTTPHeaders({ referer: server.EMPTY_PAGE });
await page.setRequestInterception(true);
page.on('request', (request) => {
expect(request.headers()['referer']).toBe(server.EMPTY_PAGE);
request.continue();
});
const response = await page.goto(server.EMPTY_PAGE);
expect(response.ok()).toBe(true);
});
it('should be abortable', async () => {
const { page, server } = getTestState();
await page.setRequestInterception(true);
page.on('request', (request) => {
if (request.url().endsWith('.css')) request.abort();
else request.continue();
});
let failedRequests = 0;
page.on('requestfailed', () => ++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 abortable with custom error codes', async () => {
const { page, server } = getTestState();
await page.setRequestInterception(true);
page.on('request', (request) => {
request.abort('internetdisconnected');
});
let failedRequest = null;
page.on('requestfailed', (request) => (failedRequest = request));
await 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 } = getTestState();
await page.setExtraHTTPHeaders({
referer: 'http://google.com/',
});
await page.setRequestInterception(true);
page.on('request', (request) => request.continue());
const [request] = await Promise.all([
server.waitForRequest('/grid.html'),
page.goto(server.PREFIX + '/grid.html'),
]);
expect(request.headers['referer']).toBe('http://google.com/');
});
it('should fail navigation when aborting main resource', async () => {
const { page, server, isChrome } = getTestState();
await page.setRequestInterception(true);
page.on('request', (request) => request.abort());
let error = null;
await page.goto(server.EMPTY_PAGE).catch((error_) => (error = error_));
expect(error).toBeTruthy();
if (isChrome) expect(error.message).toContain('net::ERR_FAILED');
else expect(error.message).toContain('NS_ERROR_FAILURE');
});
it('should work with redirects', async () => {
const { page, server } = getTestState();
await page.setRequestInterception(true);
const requests = [];
page.on('request', (request) => {
request.continue();
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.length).toBe(5);
expect(requests[2].resourceType()).toBe('document');
// Check redirect chain
const redirectChain = response.request().redirectChain();
expect(redirectChain.length).toBe(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 } = getTestState();
await page.setRequestInterception(true);
const requests = [];
page.on('request', (request) => {
request.continue();
if (!utils.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) =>
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.length).toBe(5);
expect(requests[0].resourceType()).toBe('document');
expect(requests[1].resourceType()).toBe('stylesheet');
// Check redirect chain
const redirectChain = requests[1].redirectChain();
expect(redirectChain.length).toBe(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 } = 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')) request.abort();
else request.continue();
});
await page.goto(server.EMPTY_PAGE);
const result = await page.evaluate(async () => {
try {
await fetch('/non-existing.json');
} catch (error) {
return 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 } = getTestState();
await page.goto(server.EMPTY_PAGE);
let responseCount = 1;
server.setRoute('/zzz', (req, res) => res.end(responseCount++ * 11 + ''));
await page.setRequestInterception(true);
let spinner = false;
// Cancel 2nd request.
page.on('request', (request) => {
if (utils.isFavicon(request)) {
request.continue();
return;
}
spinner ? request.abort() : request.continue();
spinner = !spinner;
});
const results = await page.evaluate(() =>
Promise.all([
fetch('/zzz')
.then((response) => response.text())
.catch(() => 'FAILED'),
fetch('/zzz')
.then((response) => response.text())
.catch(() => 'FAILED'),
fetch('/zzz')
.then((response) => response.text())
.catch(() => 'FAILED'),
])
);
expect(results).toEqual(['11', 'FAILED', '22']);
});
it('should navigate to dataURL and fire dataURL requests', async () => {
const { page } = getTestState();
await page.setRequestInterception(true);
const requests = [];
page.on('request', (request) => {
requests.push(request);
request.continue();
});
const dataURL = 'data:text/html,<div>yo</div>';
const response = await page.goto(dataURL);
expect(response.status()).toBe(200);
expect(requests.length).toBe(1);
expect(requests[0].url()).toBe(dataURL);
});
it('should be able to fetch dataURL and fire dataURL requests', async () => {
const { page, server } = getTestState();
await page.goto(server.EMPTY_PAGE);
await page.setRequestInterception(true);
const requests = [];
page.on('request', (request) => {
requests.push(request);
request.continue();
});
const dataURL = 'data:text/html,<div>yo</div>';
const text = await page.evaluate(
(url: string) => fetch(url).then((r) => r.text()),
dataURL
);
expect(text).toBe('<div>yo</div>');
expect(requests.length).toBe(1);
expect(requests[0].url()).toBe(dataURL);
});
it('should navigate to URL with hash and fire requests without hash', async () => {
const { page, server } = getTestState();
await page.setRequestInterception(true);
const requests = [];
page.on('request', (request) => {
requests.push(request);
request.continue();
});
const response = await page.goto(server.EMPTY_PAGE + '#hash');
expect(response.status()).toBe(200);
expect(response.url()).toBe(server.EMPTY_PAGE);
expect(requests.length).toBe(1);
expect(requests[0].url()).toBe(server.EMPTY_PAGE);
});
it('should work with encoded server', async () => {
const { page, server } = 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) => request.continue());
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 } = getTestState();
await page.setRequestInterception(true);
server.setRoute('/malformed?rnd=%911', (req, res) => res.end());
page.on('request', (request) => request.continue());
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 } = 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 = [];
page.on('request', (request) => {
request.continue();
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.length).toBe(2);
expect(requests[1].response().status()).toBe(404);
});
it('should not throw "Invalid Interception Id" if the request was cancelled', async () => {
const { page, server } = getTestState();
await page.setContent('<iframe></iframe>');
await page.setRequestInterception(true);
let request = null;
page.on('request', async (r) => (request = r));
page.$eval(
'iframe',
(frame: HTMLIFrameElement, url: string) => (frame.src = url),
server.EMPTY_PAGE
),
// Wait for request interception.
await utils.waitEvent(page, 'request');
// Delete frame to cause request to be canceled.
await page.$eval('iframe', (frame) => frame.remove());
let error = null;
await request.continue().catch((error_) => (error = error_));
expect(error).toBe(null);
});
it('should throw if interception is not enabled', async () => {
const { page, server } = getTestState();
let error = null;
page.on('request', async (request) => {
try {
await request.continue();
} catch (error_) {
error = 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 } = getTestState();
await page.setRequestInterception(true);
const urls = new Set();
page.on('request', (request) => {
urls.add(request.url().split('/').pop());
request.continue();
});
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 } = 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) => request.continue());
const cached = [];
page.on('requestservedfromcache', (r) => cached.push(r));
await page.reload();
expect(cached.length).toBe(0);
});
it('should cache if cache enabled', async () => {
const { page, server } = 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) => request.continue());
const cached = [];
page.on('requestservedfromcache', (r) => cached.push(r));
await page.reload();
expect(cached.length).toBe(1);
});
it('should load fonts if cache enabled', async () => {
const { page, server } = getTestState();
await page.setRequestInterception(true);
await page.setCacheEnabled(true);
page.on('request', (request) => request.continue());
await page.goto(server.PREFIX + '/cached/one-style-font.html');
await page.waitForResponse((r) => r.url().endsWith('/one-style.woff'));
});
});
describe('Request.continue', function () {
it('should work', async () => {
const { page, server } = getTestState();
await page.setRequestInterception(true);
page.on('request', (request) => request.continue());
await page.goto(server.EMPTY_PAGE);
});
it('should amend HTTP headers', async () => {
const { page, server } = getTestState();
await page.setRequestInterception(true);
page.on('request', (request) => {
const headers = Object.assign({}, request.headers());
headers['FOO'] = 'bar';
request.continue({ headers });
});
await page.goto(server.EMPTY_PAGE);
const [request] = await Promise.all([
server.waitForRequest('/sleep.zzz'),
page.evaluate(() => fetch('/sleep.zzz')),
]);
expect(request.headers['foo']).toBe('bar');
});
it('should redirect in a way non-observable to page', async () => {
const { page, server } = getTestState();
await page.setRequestInterception(true);
page.on('request', (request) => {
const redirectURL = request.url().includes('/empty.html')
? server.PREFIX + '/consolelog.html'
: undefined;
request.continue({ url: redirectURL });
});
let consoleMessage = null;
page.on('console', (msg) => (consoleMessage = msg));
await 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 } = getTestState();
await page.goto(server.EMPTY_PAGE);
await page.setRequestInterception(true);
page.on('request', (request) => {
request.continue({ method: 'POST' });
});
const [request] = await Promise.all([
server.waitForRequest('/sleep.zzz'),
page.evaluate(() => fetch('/sleep.zzz')),
]);
expect(request.method).toBe('POST');
});
it('should amend post data', async () => {
const { page, server } = getTestState();
await page.goto(server.EMPTY_PAGE);
await page.setRequestInterception(true);
page.on('request', (request) => {
request.continue({ postData: 'doggo' });
});
const [serverRequest] = await Promise.all([
server.waitForRequest('/sleep.zzz'),
page.evaluate(() =>
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 } = getTestState();
await page.setRequestInterception(true);
page.on('request', (request) => {
request.continue({ method: 'POST', postData: 'doggo' });
});
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');
});
it('should fail if the header value is invalid', async () => {
const { page, server } = getTestState();
let error;
await page.setRequestInterception(true);
page.on('request', async (request) => {
await request
.continue({
headers: {
'X-Invalid-Header': 'a\nb',
},
})
.catch((error_) => {
error = error_;
});
await request.continue();
});
await page.goto(server.PREFIX + '/empty.html');
expect(error.message).toMatch(/Invalid header/);
});
});
describe('Request.respond', function () {
it('should work', async () => {
const { page, server } = getTestState();
await page.setRequestInterception(true);
page.on('request', (request) => {
request.respond({
status: 201,
headers: {
foo: 'bar',
},
body: 'Yo, page!',
});
});
const response = await page.goto(server.EMPTY_PAGE);
expect(response.status()).toBe(201);
expect(response.headers().foo).toBe('bar');
expect(await page.evaluate(() => document.body.textContent)).toBe(
'Yo, page!'
);
});
it('should work with status code 422', async () => {
const { page, server } = getTestState();
await page.setRequestInterception(true);
page.on('request', (request) => {
request.respond({
status: 422,
body: 'Yo, page!',
});
});
const response = await page.goto(server.EMPTY_PAGE);
expect(response.status()).toBe(422);
expect(response.statusText()).toBe('Unprocessable Entity');
expect(await page.evaluate(() => document.body.textContent)).toBe(
'Yo, page!'
);
});
it('should redirect', async () => {
const { page, server } = getTestState();
await page.setRequestInterception(true);
page.on('request', (request) => {
if (!request.url().includes('rrredirect')) {
request.continue();
return;
}
request.respond({
status: 302,
headers: {
location: server.EMPTY_PAGE,
},
});
});
const response = await page.goto(server.PREFIX + '/rrredirect');
expect(response.request().redirectChain().length).toBe(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 } = getTestState();
await page.setRequestInterception(true);
page.on('request', (request) => {
const imageBuffer = fs.readFileSync(
path.join(__dirname, 'assets', 'pptr.png')
);
request.respond({
contentType: 'image/png',
body: imageBuffer,
});
});
await page.evaluate((PREFIX) => {
const img = document.createElement('img');
img.src = PREFIX + '/does-not-exist.png';
document.body.appendChild(img);
return new Promise((fulfill) => (img.onload = fulfill));
}, server.PREFIX);
const img = await page.$('img');
expect(await img.screenshot()).toBeGolden('mock-binary-response.png');
});
it('should stringify intercepted request response headers', async () => {
const { page, server } = getTestState();
await page.setRequestInterception(true);
page.on('request', (request) => {
request.respond({
status: 200,
headers: {
foo: true,
},
body: 'Yo, page!',
});
});
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(() => document.body.textContent)).toBe(
'Yo, page!'
);
});
it('should fail if the header value is invalid', async () => {
const { page, server } = getTestState();
let error;
await page.setRequestInterception(true);
page.on('request', async (request) => {
await request
.respond({
headers: {
'X-Invalid-Header': 'a\nb',
},
})
.catch((error_) => {
error = error_;
});
await request.respond({
status: 200,
body: 'Hello World',
});
});
await page.goto(server.PREFIX + '/empty.html');
expect(error.message).toMatch(/Invalid header/);
});
});
});
/**
* @param {string} path
* @returns {string}
*/
function pathToFileURL(path) {
let pathName = path.replace(/\\/g, '/');
// Windows drive letter must be prefixed with a slash.
if (!pathName.startsWith('/')) pathName = '/' + pathName;
return 'file://' + pathName;
}