E2E/Playwright: MM-T5424 Find channel limit to 50 results (#23248)

* fix aria-label of Find Channels modal

* add components

* add test for MM-T5424

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

e2e-tests/playwright/support/server/channel.ts

@@ -4,25 +4,32 @@
 import {getRandomId} from '@e2e-support/util';
 import {Channel, ChannelType} from '@mattermost/types/channels';
 
-export function createRandomChannel(
+type ChannelInput = {
-    teamId: string,
+    teamId: string;
-    name: string,
+    name: string;
-    displayName: string,
+    displayName: string;
-    type: ChannelType = 'O',
+    type?: ChannelType;
-    purpose = '',
+    purpose?: string;
-    header = '',
+    header?: string;
-    unique = true
+    unique?: boolean;
-): Channel {
+};
-    const randomSuffix = getRandomId();
 
+export function createRandomChannel(channelInput: ChannelInput): Channel {
     const channel = {
-        team_id: teamId,
+        team_id: channelInput.teamId,
-        name: unique ? `${name}-${randomSuffix}` : name,
+        name: channelInput.name,
-        display_name: unique ? `${displayName} ${randomSuffix}` : displayName,
+        display_name: channelInput.displayName,
-        type,
+        type: channelInput.type || 'O',
-        purpose,
+        purpose: channelInput.type || '',
-        header,
+        header: channelInput.type || '',
     };
 
+    if (channelInput.unique) {
+        const randomSuffix = getRandomId();
+
+        channel.name = `${channelInput.name}-${randomSuffix}`;
+        channel.display_name = `${channelInput.displayName} ${randomSuffix}`;
+    }
+
     return channel as Channel;
 }

e2e-tests/playwright/support/test_fixture.ts

@@ -1,8 +1,9 @@
-import {test as base, Browser} from '@playwright/test';
+import {test as base, Browser, ViewportSize} from '@playwright/test';
 
 import {TestBrowser} from './browser_context';
 import {shouldHaveCallsEnabled, shouldHaveFeatureFlag, shouldSkipInSmallScreen, shouldRunInLinux} from './flag';
 import {initSetup, getAdminClient} from './server';
+import {isSmallScreen} from './util';
 import {hideDynamicChannelsContent, waitForAnimationEnd, waitUntil} from './test_action';
 import {pages} from './ui/pages';
 import {matchSnapshot} from './visual';
@@ -15,8 +16,8 @@ type ExtendedFixtures = {
 };
 
 export const test = base.extend<ExtendedFixtures>({
-    pw: async ({browser}, use) => {
+    pw: async ({browser, viewport}, use) => {
-        const pw = new PlaywrightExtended(browser);
+        const pw = new PlaywrightExtended(browser, viewport);
         await use(pw);
         await pw.testBrowser.close();
     },
@@ -48,10 +49,13 @@ class PlaywrightExtended {
     // ./ui/pages
     readonly pages;
 
+    // ./util
+    readonly isSmallScreen;
+
     // ./visual
     readonly matchSnapshot;
 
-    constructor(browser: Browser) {
+    constructor(browser: Browser, viewport: ViewportSize | null) {
         // ./browser_context
         this.testBrowser = new TestBrowser(browser);
 
@@ -73,6 +77,9 @@ class PlaywrightExtended {
         // ./ui/pages
         this.pages = pages;
 
+        // ./util
+        this.isSmallScreen = () => isSmallScreen(viewport);
+
         // ./visual
         this.matchSnapshot = matchSnapshot;
     }

e2e-tests/playwright/support/ui/components/channels/find_channels_modal.ts

@@ -0,0 +1,23 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import {expect, Locator} from '@playwright/test';
+
+export default class FindChannelsModal {
+    readonly container: Locator;
+    readonly input;
+    readonly searchList;
+
+    constructor(container: Locator) {
+        this.container = container;
+
+        this.input = container.getByRole('textbox', {name: 'quick switch input'});
+        this.searchList = container.locator('.suggestion-list__item');
+    }
+
+    async toBeVisible() {
+        await expect(this.container).toBeVisible();
+    }
+}
+
+export {FindChannelsModal};

e2e-tests/playwright/support/ui/components/channels/header_mobile.ts

@@ -0,0 +1,22 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import {expect, Locator} from '@playwright/test';
+
+export default class ChannelsHeaderMobile {
+    readonly container: Locator;
+
+    constructor(container: Locator) {
+        this.container = container;
+    }
+
+    async toggleSidebar() {
+        await this.container.getByRole('button', {name: 'Toggle sidebar Menu Icon'}).click();
+    }
+
+    async toBeVisible() {
+        await expect(this.container).toBeVisible();
+    }
+}
+
+export {ChannelsHeaderMobile};

e2e-tests/playwright/support/ui/components/channels/sidebar_left.ts

@@ -0,0 +1,21 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import {expect, Locator} from '@playwright/test';
+
+export default class ChannelsSidebarLeft {
+    readonly container: Locator;
+    readonly findChannelButton;
+
+    constructor(container: Locator) {
+        this.container = container;
+
+        this.findChannelButton = container.getByRole('button', {name: 'Find Channels'});
+    }
+
+    async toBeVisible() {
+        await expect(this.container).toBeVisible();
+    }
+}
+
+export {ChannelsSidebarLeft};

e2e-tests/playwright/support/ui/components/index.ts

@@ -3,19 +3,25 @@
 
 import {BoardsSidebar} from './boards/sidebar';
 import {ChannelsHeader} from './channels/header';
+import {ChannelsHeaderMobile} from './channels/header_mobile';
 import {ChannelsAppBar} from './channels/app_bar';
 import {ChannelsPostCreate} from './channels/post_create';
 import {ChannelsPost} from './channels/post';
+import {ChannelsSidebarLeft} from './channels/sidebar_left';
 import {ChannelsSidebarRight} from './channels/sidebar_right';
+import {FindChannelsModal} from './channels/find_channels_modal';
 import {GlobalHeader} from './global_header';
 
 const components = {
     BoardsSidebar,
     ChannelsAppBar,
     ChannelsHeader,
+    ChannelsHeaderMobile,
     ChannelsPostCreate,
     ChannelsPost,
+    ChannelsSidebarLeft,
     ChannelsSidebarRight,
+    FindChannelsModal,
     GlobalHeader,
 };
 
@@ -24,8 +30,11 @@ export {
     BoardsSidebar,
     ChannelsAppBar,
     ChannelsHeader,
+    ChannelsHeaderMobile,
     ChannelsPostCreate,
     ChannelsPost,
+    ChannelsSidebarLeft,
     ChannelsSidebarRight,
+    FindChannelsModal,
     GlobalHeader,
 };

e2e-tests/playwright/support/ui/pages/channels.ts

@@ -11,17 +11,23 @@ export default class ChannelsPage {
     readonly channels = 'Channels';
     readonly page: Page;
     readonly postCreate;
+    readonly findChannelsModal;
     readonly globalHeader;
     readonly header;
+    readonly headerMobile;
     readonly appBar;
+    readonly sidebarLeft;
     readonly sidebarRight;
 
     constructor(page: Page) {
         this.page = page;
         this.postCreate = new components.ChannelsPostCreate(page.locator('#post-create'));
+        this.findChannelsModal = new components.FindChannelsModal(page.getByRole('dialog', {name: 'Find Channels'}));
         this.globalHeader = new components.GlobalHeader(page.locator('#global-header'));
         this.header = new components.ChannelsHeader(page.locator('.channel-header'));
+        this.headerMobile = new components.ChannelsHeaderMobile(page.locator('.navbar'));
         this.appBar = new components.ChannelsAppBar(page.locator('.app-bar'));
+        this.sidebarLeft = new components.ChannelsSidebarLeft(page.locator('#SidebarContainer'));
         this.sidebarRight = new components.ChannelsSidebarRight(page.locator('#sidebar-right'));
     }
 

e2e-tests/playwright/tests/functional/channels/search/find_channels.spec.ts

@@ -0,0 +1,61 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import {expect, test} from '@e2e-support/test_fixture';
+import {createRandomChannel} from '@e2e-support/server';
+
+test('MM-T5424 Find channel search returns only 50 results when there are more than 50 channels with similar names', async ({
+    pw,
+    pages,
+}) => {
+    const {adminClient, user, team} = await pw.initSetup();
+
+    const commonName = 'test_channel';
+
+    // # Create more than 50 channels with similar names
+    const channelsRes = [];
+    for (let i = 0; i < 100; i++) {
+        let suffix = i.toString();
+        if (i < 10) {
+            suffix = `0${i}`;
+        }
+        const channel = createRandomChannel({
+            teamId: team.id,
+            name: `${commonName}_${suffix}`,
+            displayName: `Test Channel ${suffix}`,
+        });
+        channelsRes.push(adminClient.createChannel(channel));
+    }
+    await Promise.all(channelsRes);
+
+    // # Log in a user in new browser context
+    const {page} = await pw.testBrowser.login(user);
+
+    // # Visit a default channel page
+    const channelsPage = new pages.ChannelsPage(page);
+    await channelsPage.goto();
+    await channelsPage.toBeVisible();
+
+    // # Click on "Find channel" and type "test_channel"
+    if (pw.isSmallScreen()) {
+        await channelsPage.headerMobile.toggleSidebar();
+    }
+    await channelsPage.sidebarLeft.findChannelButton.click();
+
+    await channelsPage.findChannelsModal.toBeVisible();
+    await channelsPage.findChannelsModal.input.fill(commonName);
+
+    const limitCount = 50;
+
+    // # Only 50 results for similar name should be displayed.
+    await expect(channelsPage.findChannelsModal.searchList).toHaveCount(limitCount);
+
+    for (let i = 0; i < limitCount; i++) {
+        let suffix = i.toString();
+        if (i < 10) {
+            suffix = `0${i}`;
+        }
+
+        await expect(channelsPage.findChannelsModal.container.getByTestId(`${commonName}_${suffix}`)).toBeVisible();
+    }
+});

e2e-tests/playwright/tests/visual/channels/intro_channel.spec.ts

@@ -2,7 +2,6 @@
 // See LICENSE.txt for license information.
 
 import {expect, test} from '@e2e-support/test_fixture';
-import {isSmallScreen} from '@e2e-support/util';
 
 test('Intro to channel as regular user', async ({pw, pages, browserName, viewport}, testInfo) => {
     // Create and sign in a new user
@@ -23,7 +22,7 @@ test('Intro to channel as regular user', async ({pw, pages, browserName, viewpor
     // await wait(duration.one_sec);
 
     // Wait for Playbooks icon to be loaded in App bar, except in iphone
-    if (!isSmallScreen(viewport)) {
+    if (!pw.isSmallScreen()) {
         await expect(channelsPage.appBar.playbooksIcon).toBeVisible();
     }
 

webapp/channels/src/components/quick_switch_modal/__snapshots__/quick_switch_modal.test.tsx.snap

@@ -3,8 +3,8 @@
 exports[`components/QuickSwitchModal should match snapshot 1`] = `
 <Modal
   animation={false}
-  aria-describedby="quickSwitchHeader"
+  aria-describedby="quickSwitchHeaderWithHint"
-  aria-labelledby="quickSwitchModalLabel"
+  aria-labelledby="quickSwitchHeader"
   autoFocus={true}
   backdrop={true}
   bsClass="modal"
@@ -42,9 +42,11 @@ exports[`components/QuickSwitchModal should match snapshot 1`] = `
   >
     <div
       className="channel-switcher__header"
-      id="quickSwitchHeader"
+      id="quickSwitchHeaderWithHint"
     >
-      <h1>
+      <h1
+        id="quickSwitchHeader"
+      >
         <MemoizedFormattedMessage
           defaultMessage="Find Channels"
           id="quick_switch_modal.switchChannels"

webapp/channels/src/components/quick_switch_modal/quick_switch_modal.tsx

@@ -157,7 +157,7 @@ export default class QuickSwitchModal extends React.PureComponent<Props, State>
         const providers: SwitchChannelProvider[] = this.channelProviders;
 
         const header = (
-            <h1>
+            <h1 id='quickSwitchHeader'>
                 <FormattedMessage
                     id='quick_switch_modal.switchChannels'
                     defaultMessage='Find Channels'
@@ -190,8 +190,8 @@ export default class QuickSwitchModal extends React.PureComponent<Props, State>
                 enforceFocus={false}
                 restoreFocus={false}
                 role='dialog'
-                aria-labelledby='quickSwitchModalLabel'
+                aria-labelledby='quickSwitchHeader'
-                aria-describedby='quickSwitchHeader'
+                aria-describedby='quickSwitchHeaderWithHint'
                 animation={false}
             >
                 <Modal.Header
@@ -201,7 +201,7 @@ export default class QuickSwitchModal extends React.PureComponent<Props, State>
                 <Modal.Body>
                     <div
                         className='channel-switcher__header'
-                        id='quickSwitchHeader'
+                        id='quickSwitchHeaderWithHint'
                     >
                         {header}
                         <div