playwright/test/request-continue.spec.ts

/**
 * Copyright 2018 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 './playwright.fixtures';

it('should work', async ({page, server}) => {
  await page.route('**/*', route => route.continue());
  await page.goto(server.EMPTY_PAGE);
});

it('should amend HTTP headers', async ({page, server}) => {
  await page.route('**/*', route => {
    const headers = Object.assign({}, route.request().headers());
    headers['FOO'] = 'bar';
    route.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 amend method', async ({page, server}) => {
  const sRequest = server.waitForRequest('/sleep.zzz');
  await page.goto(server.EMPTY_PAGE);
  await page.route('**/*', route => route.continue({ method: 'POST' }));
  const [request] = await Promise.all([
    server.waitForRequest('/sleep.zzz'),
    page.evaluate(() => fetch('/sleep.zzz'))
  ]);
  expect(request.method).toBe('POST');
  expect((await sRequest).method).toBe('POST');
});

it('should amend method on main request', async ({page, server}) => {
  const request = server.waitForRequest('/empty.html');
  await page.route('**/*', route => route.continue({ method: 'POST' }));
  await page.goto(server.EMPTY_PAGE);
  expect((await request).method).toBe('POST');
});

it('should amend post data', async ({page, server}) => {
  await page.goto(server.EMPTY_PAGE);
  await page.route('**/*', route => {
    route.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).toString('utf8')).toBe('doggo');
});

it('should amend utf8 post data', async ({page, server}) => {
  await page.goto(server.EMPTY_PAGE);
  await page.route('**/*', route => {
    route.continue({ postData: 'пушкин' });
  });
  const [serverRequest] = await Promise.all([
    server.waitForRequest('/sleep.zzz'),
    page.evaluate(() => fetch('/sleep.zzz', { method: 'POST', body: 'birdy' }))
  ]);
  expect(serverRequest.method).toBe('POST');
  expect((await serverRequest.postBody).toString('utf8')).toBe('пушкин');
});

it('should amend longer post data', async ({page, server}) => {
  await page.goto(server.EMPTY_PAGE);
  await page.route('**/*', route => {
    route.continue({ postData: 'doggo-is-longer-than-birdy' });
  });
  const [serverRequest] = await Promise.all([
    server.waitForRequest('/sleep.zzz'),
    page.evaluate(() => fetch('/sleep.zzz', { method: 'POST', body: 'birdy' }))
  ]);
  expect(serverRequest.method).toBe('POST');
  expect((await serverRequest.postBody).toString('utf8')).toBe('doggo-is-longer-than-birdy');
});

it('should amend binary post data', async ({page, server}) => {
  await page.goto(server.EMPTY_PAGE);
  const arr = Array.from(Array(256).keys());
  await page.route('**/*', route => {
    route.continue({ postData: Buffer.from(arr) });
  });
  const [serverRequest] = await Promise.all([
    server.waitForRequest('/sleep.zzz'),
    page.evaluate(() => fetch('/sleep.zzz', { method: 'POST', body: 'birdy' }))
  ]);
  expect(serverRequest.method).toBe('POST');
  const buffer = await serverRequest.postBody;
  expect(buffer.length).toBe(arr.length);
  for (let i = 0; i < arr.length; ++i)
    expect(arr[i]).toBe(buffer[i]);
});