test/e2e/network/network-request-view_test.ts - devtools/devtools-frontend - Git at Google

 // Copyright 2021 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 import {assert} from 'chai';

 import type {ElementHandle} from 'puppeteer';
 import {expectError} from '../../conductor/events.js';
 import {
   $$,
   click,
   enableExperiment,
   getTestServerPort,
   step,
   typeText,
   waitFor,
   waitForAria,
   waitForElementWithTextContent,
   waitForFunction,
   getBrowserAndPages,
   getResourcesPath,
 } from '../../shared/helper.js';
 import {describe, it} from '../../shared/mocha-extensions.js';
 import {CONSOLE_TAB_SELECTOR, focusConsolePrompt} from '../helpers/console-helpers.js';
 import {
   getAllRequestNames,
   navigateToNetworkTab,
   selectRequestByName,
   waitForSomeRequestsToAppear,
 } from '../helpers/network-helpers.js';

 const SIMPLE_PAGE_REQUEST_NUMBER = 2;
 const SIMPLE_PAGE_URL = `requests.html?num=${SIMPLE_PAGE_REQUEST_NUMBER}`;

 describe('The Network Request view', async () => {
   it('re-opens the same tab after switching to another panel and navigating back to the "Network" tab (https://crbug.com/1184578)',
      async () => {
        await navigateToNetworkTab(SIMPLE_PAGE_URL);

        await step('wait for all requests to be shown', async () => {
          await waitForSomeRequestsToAppear(SIMPLE_PAGE_REQUEST_NUMBER + 1);
        });

        await step('select the first SVG request', async () => {
          await selectRequestByName('image.svg?id=0');
        });

        await step('select the "Timing" tab', async () => {
          const networkView = await waitFor('.network-item-view');
          const timingTabHeader = await waitFor('[aria-label=Timing][role="tab"]', networkView);
          await click(timingTabHeader);
          await waitFor('[aria-label=Timing][role=tab][aria-selected=true]', networkView);
        });

        await step('open the "Console" panel', async () => {
          await click(CONSOLE_TAB_SELECTOR);
          await focusConsolePrompt();
        });

        await step('open the "Network" panel', async () => {
          await click('#tab-network');
          await waitFor('.network-log-grid');
        });

        await step('ensure that the "Timing" tab is shown', async () => {
          const networkView = await waitFor('.network-item-view');
          const selectedTabHeader = await waitFor('[role=tab][aria-selected=true]', networkView);
          const selectedTabText = await selectedTabHeader.evaluate(element => element.textContent || '');

          assert.strictEqual(selectedTabText, 'Timing');
        });
      });

   it('shows webbundle content on preview tab', async () => {
     await navigateToNetworkTab('resources-from-webbundle.html');

     await waitForSomeRequestsToAppear(3);

     await selectRequestByName('webbundle.wbn');

     const networkView = await waitFor('.network-item-view');
     const previewTabHeader = await waitFor('[aria-label=Preview][role=tab]', networkView);
     await click(previewTabHeader);
     await waitFor('[aria-label=Preview][role=tab][aria-selected=true]', networkView);

     await waitForElementWithTextContent('webbundle.wbn', networkView);
     await waitForElementWithTextContent('uuid-in-package:429fcc4e-0696-4bad-b099-ee9175f023ae', networkView);
     await waitForElementWithTextContent('uuid-in-package:020111b3-437a-4c5c-ae07-adb6bbffb720', networkView);
   });

   it('prevents requests on the preview tab.', async () => {
     await navigateToNetworkTab('embedded_requests.html');

     // For the issue to manifest it's mandatory to load the stylesheet by absolute URL. A relative URL would be treated
     // relative to the data URL in the preview iframe and thus not work. We need to generate the URL because the
     // resources path is dynamic, but we can't have any scripts in the resource page since they would be disabled in the
     // preview. Therefore, the resource page contains just an iframe and we're filling it dynamically with content here.
     const stylesheet = `${getResourcesPath()}/network/style.css`;
     const contents = `<head><link rel="stylesheet" href="${stylesheet}"></head><body><p>Content</p></body>`;
     const {target} = getBrowserAndPages();
     await waitForFunction(async () => (await target.$('iframe')) ?? undefined);
     const dataUrl = `data:text/html,${contents}`;
     await target.evaluate((dataUrl: string) => {
       (document.querySelector('iframe') as HTMLIFrameElement).src = dataUrl;
     }, dataUrl);

     await waitForSomeRequestsToAppear(3);

     const names = await getAllRequestNames();
     const name = names.find(v => v && v.startsWith('data:'));
     assert.isNotNull(name);
     await selectRequestByName(name as string);

     const styleSrcError = expectError(`Refused to load the stylesheet '${stylesheet}'`);
     const networkView = await waitFor('.network-item-view');
     const previewTabHeader = await waitFor('[aria-label=Preview][role=tab]', networkView);
     await click(previewTabHeader);
     await waitFor('[aria-label=Preview][role=tab][aria-selected=true]', networkView);

     const frame = await waitFor('.html-preview-frame');
     const content = await waitForFunction(async () => (await frame.contentFrame() ?? undefined));
     const p = await waitForFunction(async () => (await content.$('p') ?? undefined));

     const color = await p.evaluate(e => getComputedStyle(e).color);

     assert.deepEqual(color, 'rgb(0, 0, 0)');
     await waitForFunction(async () => await styleSrcError.caught);
   });

   it('stores websocket filter', async () => {
     const navigateToWebsocketMessages = async () => {
       await navigateToNetworkTab('websocket.html');

       await waitForSomeRequestsToAppear(2);

       await selectRequestByName('localhost');

       const networkView = await waitFor('.network-item-view');
       const messagesTabHeader = await waitFor('[aria-label=Messages][role=tab]', networkView);
       await click(messagesTabHeader);
       await waitFor('[aria-label=Messages][role=tab][aria-selected=true]', networkView);
       return waitFor('.websocket-frame-view');
     };

     let messagesView = await navigateToWebsocketMessages();
     const waitForMessages = async (count: number) => {
       return waitForFunction(async () => {
         const messages = await $$('.data-column.websocket-frame-view-td', messagesView);
         if (messages.length !== count) {
           return undefined;
         }
         return Promise.all(messages.map(message => {
           return message.evaluate(message => message.textContent || '');
         }));
       });
     };
     let messages = await waitForMessages(4);

     const filterInput =
         await waitFor('[aria-label="Enter regex, for example: (web)?socket"][role=textbox]', messagesView);
     filterInput.focus();
     void typeText('ping');

     messages = await waitForMessages(2);
     assert.deepEqual(messages, ['ping', 'ping']);

     messagesView = await navigateToWebsocketMessages();
     messages = await waitForMessages(2);

     assert.deepEqual(messages, ['ping', 'ping']);
   });

   async function assertOutlineMatches(expectedPatterns: string[], outline: ElementHandle<Element>[]) {
     const regexpSpecialChars = /[-\/\\^$*+?.()|[\]{}]/g;
     for (const item of outline) {
       const actualText = await item.evaluate(el => el.textContent || '');
       const expectedPattern = expectedPatterns.shift();
       if (expectedPattern) {
         assert.match(actualText, new RegExp(expectedPattern.replace(regexpSpecialChars, '\\$&').replace(/%/g, '.*')));
       } else {
         assert.fail('Unexpected text: ' + actualText);
       }
     }
   }

   it('shows request headers and payload', async () => {
     await navigateToNetworkTab('headers-and-payload.html');

     await waitForSomeRequestsToAppear(2);

     await selectRequestByName('image.svg?id=42&param=a%20b');

     const networkView = await waitFor('.network-item-view');
     const headersTabHeader = await waitFor('[aria-label=Headers][role="tab"]', networkView);
     await click(headersTabHeader);
     await waitFor('[aria-label=Headers][role=tab][aria-selected=true]', networkView);
     const headersView = await waitFor('.request-headers-view');
     const headersOutline = await $$('[role=treeitem]:not(.hidden)', headersView);
     const expectedHeadersContent = [
       'General',
       [
         'Request URL: https://localhost:%/test/e2e/resources/network/image.svg?id=42&param=a%20b',
         'Request Method: POST',
         'Status Code: 200 OK',
         'Remote Address: [::1]:%',
         'Referrer Policy: strict-origin-when-cross-origin',
       ],
       'Response Headers (7)View source',
       [
         'Cache-Control: max-age=%',
         'Connection: keep-alive',
         'Content-Type: image/svg+xml; charset=utf-8',
         'Date: %',
         'Keep-Alive: timeout=5',
         'Transfer-Encoding: chunked',
         'Vary: Origin',
       ],
       'Request Headers (17)View source',
       [
         'accept: */*',
         'Accept-Encoding: gzip, deflate, br',
         'Accept-Language: en-US',
         'Connection: keep-alive',
         'Content-Length: 32',
         'content-type: application/x-www-form-urlencoded;charset=UTF-8',
         'Host: localhost:%',
         'Origin: https://localhost:%',
         'Referer: https://localhost:%/test/e2e/resources/network/headers-and-payload.html',
         'sec-ch-ua',
         'sec-ch-ua-mobile: ?0',
         'sec-ch-ua-platform',
         'Sec-Fetch-Dest: empty',
         'Sec-Fetch-Mode: cors',
         'Sec-Fetch-Site: same-origin',
         'User-Agent: Mozilla/5.0 %',
         'x-same-domain: 1',
       ],
     ].flat();

     await assertOutlineMatches(expectedHeadersContent, headersOutline);

     const payloadTabHeader = await waitFor('[aria-label=Payload][role="tab"]', networkView);
     await click(payloadTabHeader);
     await waitFor('[aria-label=Payload][role=tab][aria-selected=true]', networkView);
     const payloadView = await waitFor('.request-payload-view');
     const payloadOutline = await $$('[role=treeitem]:not(.hidden)', payloadView);
     const expectedPayloadContent = [
       'Query String Parameters (2)view sourceview URL-encoded',
       ['id: 42', 'param: a b'],
       'Form Data (4)view sourceview URL-encoded',
       [
         'foo: alpha',
         'bar: beta:42:0',
         'baz: ',
         '(empty)',
       ],
     ].flat();

     await assertOutlineMatches(expectedPayloadContent, payloadOutline);
   });

   it('shows raw headers', async () => {
     await navigateToNetworkTab('headers-and-payload.html');

     await waitForSomeRequestsToAppear(2);

     await selectRequestByName('image.svg?id=42&param=a%20b');

     const networkView = await waitFor('.network-item-view');
     const headersTabHeader = await waitFor('[aria-label=Headers][role="tab"]', networkView);
     await click(headersTabHeader);
     await waitFor('[aria-label=Headers][role=tab][aria-selected=true]', networkView);
     const headersView = await waitFor('.request-headers-view');
     const responseHeadersTitle = await waitForElementWithTextContent('Response Headers (7)View source');
     const rawHeadersToggle = await waitFor('.header-toggle', responseHeadersTitle);
     await click(rawHeadersToggle);

     const headersOutline = await $$('[role=treeitem]:not(.hidden)', headersView);
     const expectedHeadersContent = [
       'General',
       [
         'Request URL: https://localhost:%/test/e2e/resources/network/image.svg?id=42&param=a%20b',
         'Request Method: POST',
         'Status Code: 200 OK',
         'Remote Address: [::1]:%',
         'Referrer Policy: strict-origin-when-cross-origin',
       ],
       'Response Headers (7)View parsed',
       [
         'HTTP/1.1 200 OK',
         'Content-Type: image/svg+xml; charset=utf-8',
         'Cache-Control: max-age=%',
         'Vary: Origin',
         'Date: %',
         'Connection: keep-alive',
         'Keep-Alive: timeout=5',
         'Transfer-Encoding: chunked',
       ].join('\r\n'),
       'Request Headers (17)View source',
       [
         'accept: */*',
         'Accept-Encoding: gzip, deflate, br',
         'Accept-Language: en-US',
         'Connection: keep-alive',
         'Content-Length: 32',
         'content-type: application/x-www-form-urlencoded;charset=UTF-8',
         'Host: localhost:%',
         'Origin: https://localhost:%',
         'Referer: https://localhost:%/test/e2e/resources/network/headers-and-payload.html',
         'sec-ch-ua',
         'sec-ch-ua-mobile: ?0',
         'sec-ch-ua-platform',
         'Sec-Fetch-Dest: empty',
         'Sec-Fetch-Mode: cors',
         'Sec-Fetch-Site: same-origin',
         'User-Agent: Mozilla/5.0 %',
         'x-same-domain: 1',
       ],
     ].flat();

     await assertOutlineMatches(expectedHeadersContent, headersOutline);
   });

   it('payload tab selection is preserved', async () => {
     await navigateToNetworkTab('headers-and-payload.html');

     await waitForSomeRequestsToAppear(3);

     await selectRequestByName('image.svg?id=42&param=a%20b');

     const networkView = await waitFor('.network-item-view');
     const payloadTabHeader = await waitFor('[aria-label=Payload][role="tab"]', networkView);
     await click(payloadTabHeader);
     await waitFor('[aria-label=Payload][role=tab][aria-selected=true]', networkView);

     await selectRequestByName('image.svg');
     await waitForElementWithTextContent('foo: gamma');
   });

   it('no duplicate payload tab on headers update', async () => {
     await navigateToNetworkTab('requests.html');
     const {target} = getBrowserAndPages();
     target.evaluate(() => fetch('image.svg?delay'));
     await waitForSomeRequestsToAppear(2);

     await selectRequestByName('image.svg?delay');
     await target.evaluate(async () => await fetch('/?send_delayed'));
   });

   it('can create header overrides via context menu', async () => {
     await enableExperiment('headerOverrides');
     await navigateToNetworkTab('hello.html');
     await selectRequestByName('hello.html', {button: 'right'});

     const createHeaderOverrideMenuEntry = await waitForAria('Create response header override');
     await click(createHeaderOverrideMenuEntry);
     const infoBar = await waitForAria('Select a folder to store override files in.');
     const button = await waitFor('.infobar-main-row .infobar-button', infoBar);
     await click(button);

     await waitFor('devtools-button.add-block');
     const folderElement = await waitFor('.tree-outline-disclosure ol.tree-outline .navigator-fs-folder-tree-item');
     const textContent = await folderElement.evaluate(el => el.textContent || '');
     assert.match(textContent, new RegExp(`localhost(:|%3A)${getTestServerPort()}/test/e2e/resources/network`));

     await waitFor('.tabbed-pane-header-tab[aria-label=".headers"]');
   });
 });
	// Copyright 2021 The Chromium Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	import {assert} from 'chai';

	import type {ElementHandle} from 'puppeteer';
	import {expectError} from '../../conductor/events.js';
	import {
	$$,
	click,
	enableExperiment,
	getTestServerPort,
	step,
	typeText,
	waitFor,
	waitForAria,
	waitForElementWithTextContent,
	waitForFunction,
	getBrowserAndPages,
	getResourcesPath,
	} from '../../shared/helper.js';
	import {describe, it} from '../../shared/mocha-extensions.js';
	import {CONSOLE_TAB_SELECTOR, focusConsolePrompt} from '../helpers/console-helpers.js';
	import {
	getAllRequestNames,
	navigateToNetworkTab,
	selectRequestByName,
	waitForSomeRequestsToAppear,
	} from '../helpers/network-helpers.js';

	const SIMPLE_PAGE_REQUEST_NUMBER = 2;
	const SIMPLE_PAGE_URL = `requests.html?num=${SIMPLE_PAGE_REQUEST_NUMBER}`;

	describe('The Network Request view', async () => {
	it('re-opens the same tab after switching to another panel and navigating back to the "Network" tab (https://crbug.com/1184578)',
	async () => {
	await navigateToNetworkTab(SIMPLE_PAGE_URL);

	await step('wait for all requests to be shown', async () => {
	await waitForSomeRequestsToAppear(SIMPLE_PAGE_REQUEST_NUMBER + 1);
	});

	await step('select the first SVG request', async () => {
	await selectRequestByName('image.svg?id=0');
	});

	await step('select the "Timing" tab', async () => {
	const networkView = await waitFor('.network-item-view');
	const timingTabHeader = await waitFor('[aria-label=Timing][role="tab"]', networkView);
	await click(timingTabHeader);
	await waitFor('[aria-label=Timing][role=tab][aria-selected=true]', networkView);
	});

	await step('open the "Console" panel', async () => {
	await click(CONSOLE_TAB_SELECTOR);
	await focusConsolePrompt();
	});

	await step('open the "Network" panel', async () => {
	await click('#tab-network');
	await waitFor('.network-log-grid');
	});

	await step('ensure that the "Timing" tab is shown', async () => {
	const networkView = await waitFor('.network-item-view');
	const selectedTabHeader = await waitFor('[role=tab][aria-selected=true]', networkView);
	const selectedTabText = await selectedTabHeader.evaluate(element => element.textContent \|\| '');

	assert.strictEqual(selectedTabText, 'Timing');
	});
	});

	it('shows webbundle content on preview tab', async () => {
	await navigateToNetworkTab('resources-from-webbundle.html');

	await waitForSomeRequestsToAppear(3);

	await selectRequestByName('webbundle.wbn');

	const networkView = await waitFor('.network-item-view');
	const previewTabHeader = await waitFor('[aria-label=Preview][role=tab]', networkView);
	await click(previewTabHeader);
	await waitFor('[aria-label=Preview][role=tab][aria-selected=true]', networkView);

	await waitForElementWithTextContent('webbundle.wbn', networkView);
	await waitForElementWithTextContent('uuid-in-package:429fcc4e-0696-4bad-b099-ee9175f023ae', networkView);
	await waitForElementWithTextContent('uuid-in-package:020111b3-437a-4c5c-ae07-adb6bbffb720', networkView);
	});

	it('prevents requests on the preview tab.', async () => {
	await navigateToNetworkTab('embedded_requests.html');

	// For the issue to manifest it's mandatory to load the stylesheet by absolute URL. A relative URL would be treated
	// relative to the data URL in the preview iframe and thus not work. We need to generate the URL because the
	// resources path is dynamic, but we can't have any scripts in the resource page since they would be disabled in the
	// preview. Therefore, the resource page contains just an iframe and we're filling it dynamically with content here.
	const stylesheet = `${getResourcesPath()}/network/style.css`;
	const contents = `<head><link rel="stylesheet" href="${stylesheet}"></head><body><p>Content</p></body>`;
	const {target} = getBrowserAndPages();
	await waitForFunction(async () => (await target.$('iframe')) ?? undefined);
	const dataUrl = `data:text/html,${contents}`;
	await target.evaluate((dataUrl: string) => {
	(document.querySelector('iframe') as HTMLIFrameElement).src = dataUrl;
	}, dataUrl);

	await waitForSomeRequestsToAppear(3);

	const names = await getAllRequestNames();
	const name = names.find(v => v && v.startsWith('data:'));
	assert.isNotNull(name);
	await selectRequestByName(name as string);

	const styleSrcError = expectError(`Refused to load the stylesheet '${stylesheet}'`);
	const networkView = await waitFor('.network-item-view');
	const previewTabHeader = await waitFor('[aria-label=Preview][role=tab]', networkView);
	await click(previewTabHeader);
	await waitFor('[aria-label=Preview][role=tab][aria-selected=true]', networkView);

	const frame = await waitFor('.html-preview-frame');
	const content = await waitForFunction(async () => (await frame.contentFrame() ?? undefined));
	const p = await waitForFunction(async () => (await content.$('p') ?? undefined));

	const color = await p.evaluate(e => getComputedStyle(e).color);

	assert.deepEqual(color, 'rgb(0, 0, 0)');
	await waitForFunction(async () => await styleSrcError.caught);
	});

	it('stores websocket filter', async () => {
	const navigateToWebsocketMessages = async () => {
	await navigateToNetworkTab('websocket.html');

	await waitForSomeRequestsToAppear(2);

	await selectRequestByName('localhost');

	const networkView = await waitFor('.network-item-view');
	const messagesTabHeader = await waitFor('[aria-label=Messages][role=tab]', networkView);
	await click(messagesTabHeader);
	await waitFor('[aria-label=Messages][role=tab][aria-selected=true]', networkView);
	return waitFor('.websocket-frame-view');
	};

	let messagesView = await navigateToWebsocketMessages();
	const waitForMessages = async (count: number) => {
	return waitForFunction(async () => {
	const messages = await $$('.data-column.websocket-frame-view-td', messagesView);
	if (messages.length !== count) {
	return undefined;
	}
	return Promise.all(messages.map(message => {
	return message.evaluate(message => message.textContent \|\| '');
	}));
	});
	};
	let messages = await waitForMessages(4);

	const filterInput =
	await waitFor('[aria-label="Enter regex, for example: (web)?socket"][role=textbox]', messagesView);
	filterInput.focus();
	void typeText('ping');

	messages = await waitForMessages(2);
	assert.deepEqual(messages, ['ping', 'ping']);

	messagesView = await navigateToWebsocketMessages();
	messages = await waitForMessages(2);

	assert.deepEqual(messages, ['ping', 'ping']);
	});

	async function assertOutlineMatches(expectedPatterns: string[], outline: ElementHandle<Element>[]) {
	const regexpSpecialChars = /[-\/\\^$*+?.()\|[\]{}]/g;
	for (const item of outline) {
	const actualText = await item.evaluate(el => el.textContent \|\| '');
	const expectedPattern = expectedPatterns.shift();
	if (expectedPattern) {
	assert.match(actualText, new RegExp(expectedPattern.replace(regexpSpecialChars, '\\$&').replace(/%/g, '.*')));
	} else {
	assert.fail('Unexpected text: ' + actualText);
	}
	}
	}

	it('shows request headers and payload', async () => {
	await navigateToNetworkTab('headers-and-payload.html');

	await waitForSomeRequestsToAppear(2);

	await selectRequestByName('image.svg?id=42&param=a%20b');

	const networkView = await waitFor('.network-item-view');
	const headersTabHeader = await waitFor('[aria-label=Headers][role="tab"]', networkView);
	await click(headersTabHeader);
	await waitFor('[aria-label=Headers][role=tab][aria-selected=true]', networkView);
	const headersView = await waitFor('.request-headers-view');
	const headersOutline = await $$('[role=treeitem]:not(.hidden)', headersView);
	const expectedHeadersContent = [
	'General',
	[
	'Request URL: https://localhost:%/test/e2e/resources/network/image.svg?id=42&param=a%20b',
	'Request Method: POST',
	'Status Code: 200 OK',
	'Remote Address: [::1]:%',
	'Referrer Policy: strict-origin-when-cross-origin',
	],
	'Response Headers (7)View source',
	[
	'Cache-Control: max-age=%',
	'Connection: keep-alive',
	'Content-Type: image/svg+xml; charset=utf-8',
	'Date: %',
	'Keep-Alive: timeout=5',
	'Transfer-Encoding: chunked',
	'Vary: Origin',
	],
	'Request Headers (17)View source',
	[
	'accept: /',
	'Accept-Encoding: gzip, deflate, br',
	'Accept-Language: en-US',
	'Connection: keep-alive',
	'Content-Length: 32',
	'content-type: application/x-www-form-urlencoded;charset=UTF-8',
	'Host: localhost:%',
	'Origin: https://localhost:%',
	'Referer: https://localhost:%/test/e2e/resources/network/headers-and-payload.html',
	'sec-ch-ua',
	'sec-ch-ua-mobile: ?0',
	'sec-ch-ua-platform',
	'Sec-Fetch-Dest: empty',
	'Sec-Fetch-Mode: cors',
	'Sec-Fetch-Site: same-origin',
	'User-Agent: Mozilla/5.0 %',
	'x-same-domain: 1',
	],
	].flat();

	await assertOutlineMatches(expectedHeadersContent, headersOutline);

	const payloadTabHeader = await waitFor('[aria-label=Payload][role="tab"]', networkView);
	await click(payloadTabHeader);
	await waitFor('[aria-label=Payload][role=tab][aria-selected=true]', networkView);
	const payloadView = await waitFor('.request-payload-view');
	const payloadOutline = await $$('[role=treeitem]:not(.hidden)', payloadView);
	const expectedPayloadContent = [
	'Query String Parameters (2)view sourceview URL-encoded',
	['id: 42', 'param: a b'],
	'Form Data (4)view sourceview URL-encoded',
	[
	'foo: alpha',
	'bar: beta:42:0',
	'baz: ',
	'(empty)',
	],
	].flat();

	await assertOutlineMatches(expectedPayloadContent, payloadOutline);
	});

	it('shows raw headers', async () => {
	await navigateToNetworkTab('headers-and-payload.html');

	await waitForSomeRequestsToAppear(2);

	await selectRequestByName('image.svg?id=42&param=a%20b');

	const networkView = await waitFor('.network-item-view');
	const headersTabHeader = await waitFor('[aria-label=Headers][role="tab"]', networkView);
	await click(headersTabHeader);
	await waitFor('[aria-label=Headers][role=tab][aria-selected=true]', networkView);
	const headersView = await waitFor('.request-headers-view');
	const responseHeadersTitle = await waitForElementWithTextContent('Response Headers (7)View source');
	const rawHeadersToggle = await waitFor('.header-toggle', responseHeadersTitle);
	await click(rawHeadersToggle);

	const headersOutline = await $$('[role=treeitem]:not(.hidden)', headersView);
	const expectedHeadersContent = [
	'General',
	[
	'Request URL: https://localhost:%/test/e2e/resources/network/image.svg?id=42&param=a%20b',
	'Request Method: POST',
	'Status Code: 200 OK',
	'Remote Address: [::1]:%',
	'Referrer Policy: strict-origin-when-cross-origin',
	],
	'Response Headers (7)View parsed',
	[
	'HTTP/1.1 200 OK',
	'Content-Type: image/svg+xml; charset=utf-8',
	'Cache-Control: max-age=%',
	'Vary: Origin',
	'Date: %',
	'Connection: keep-alive',
	'Keep-Alive: timeout=5',
	'Transfer-Encoding: chunked',
	].join('\r\n'),
	'Request Headers (17)View source',
	[
	'accept: /',
	'Accept-Encoding: gzip, deflate, br',
	'Accept-Language: en-US',
	'Connection: keep-alive',
	'Content-Length: 32',
	'content-type: application/x-www-form-urlencoded;charset=UTF-8',
	'Host: localhost:%',
	'Origin: https://localhost:%',
	'Referer: https://localhost:%/test/e2e/resources/network/headers-and-payload.html',
	'sec-ch-ua',
	'sec-ch-ua-mobile: ?0',
	'sec-ch-ua-platform',
	'Sec-Fetch-Dest: empty',
	'Sec-Fetch-Mode: cors',
	'Sec-Fetch-Site: same-origin',
	'User-Agent: Mozilla/5.0 %',
	'x-same-domain: 1',
	],
	].flat();

	await assertOutlineMatches(expectedHeadersContent, headersOutline);
	});

	it('payload tab selection is preserved', async () => {
	await navigateToNetworkTab('headers-and-payload.html');

	await waitForSomeRequestsToAppear(3);

	await selectRequestByName('image.svg?id=42&param=a%20b');

	const networkView = await waitFor('.network-item-view');
	const payloadTabHeader = await waitFor('[aria-label=Payload][role="tab"]', networkView);
	await click(payloadTabHeader);
	await waitFor('[aria-label=Payload][role=tab][aria-selected=true]', networkView);

	await selectRequestByName('image.svg');
	await waitForElementWithTextContent('foo: gamma');
	});

	it('no duplicate payload tab on headers update', async () => {
	await navigateToNetworkTab('requests.html');
	const {target} = getBrowserAndPages();
	target.evaluate(() => fetch('image.svg?delay'));
	await waitForSomeRequestsToAppear(2);

	await selectRequestByName('image.svg?delay');
	await target.evaluate(async () => await fetch('/?send_delayed'));
	});

	it('can create header overrides via context menu', async () => {
	await enableExperiment('headerOverrides');
	await navigateToNetworkTab('hello.html');
	await selectRequestByName('hello.html', {button: 'right'});

	const createHeaderOverrideMenuEntry = await waitForAria('Create response header override');
	await click(createHeaderOverrideMenuEntry);
	const infoBar = await waitForAria('Select a folder to store override files in.');
	const button = await waitFor('.infobar-main-row .infobar-button', infoBar);
	await click(button);

	await waitFor('devtools-button.add-block');
	const folderElement = await waitFor('.tree-outline-disclosure ol.tree-outline .navigator-fs-folder-tree-item');
	const textContent = await folderElement.evaluate(el => el.textContent \|\| '');
	assert.match(textContent, new RegExp(`localhost(:\|%3A)${getTestServerPort()}/test/e2e/resources/network`));

	await waitFor('.tabbed-pane-header-tab[aria-label=".headers"]');
	});
	});