test: Add playwright main usage test

e2e/pages/chat-room.page.ts

@@ -0,0 +1,79 @@
+import {
+  expect,
+  type Page,
+  type Locator
+} from '@playwright/test';
+
+export class ChatRoomPage {
+  readonly chatMessages: Locator;
+  readonly voiceWorkspace: Locator;
+  readonly channelsSidePanel: Locator;
+  readonly usersSidePanel: Locator;
+
+  constructor(private page: Page) {
+    this.chatMessages = page.locator('app-chat-messages');
+    this.voiceWorkspace = page.locator('app-voice-workspace');
+    this.channelsSidePanel = page.locator('app-rooms-side-panel').first();
+    this.usersSidePanel = page.locator('app-rooms-side-panel').last();
+  }
+
+  /** Click a voice channel by name in the channels sidebar to join voice. */
+  async joinVoiceChannel(channelName: string) {
+    const channelButton = this.page.locator('app-rooms-side-panel')
+      .getByRole('button', { name: channelName, exact: true });
+
+    await expect(channelButton).toBeVisible({ timeout: 15_000 });
+    await channelButton.click();
+  }
+
+  /** Click "Create Voice Channel" button in the channels sidebar. */
+  async openCreateVoiceChannelDialog() {
+    await this.page.locator('button[title="Create Voice Channel"]').click();
+  }
+
+  /** Click "Create Text Channel" button in the channels sidebar. */
+  async openCreateTextChannelDialog() {
+    await this.page.locator('button[title="Create Text Channel"]').click();
+  }
+
+  /** Fill the channel name in the create channel dialog and confirm. */
+  async createChannel(name: string) {
+    const dialog = this.page.locator('app-confirm-dialog');
+    const channelNameInput = dialog.getByPlaceholder('Channel name');
+    const createButton = dialog.getByRole('button', { name: 'Create', exact: true });
+
+    await expect(channelNameInput).toBeVisible({ timeout: 10_000 });
+    await channelNameInput.fill(name);
+    await createButton.click();
+  }
+
+  /** Get the voice controls component. */
+  get voiceControls() {
+    return this.page.locator('app-voice-controls');
+  }
+
+  /** Get the mute toggle button inside voice controls. */
+  get muteButton() {
+    return this.voiceControls.locator('button:has(ng-icon[name="lucideMic"]), button:has(ng-icon[name="lucideMicOff"])').first();
+  }
+
+  /** Get the disconnect/hang-up button (destructive styled). */
+  get disconnectButton() {
+    return this.voiceControls.locator('button:has(ng-icon[name="lucidePhoneOff"])').first();
+  }
+
+  /** Get all voice stream tiles. */
+  get streamTiles() {
+    return this.page.locator('app-voice-workspace-stream-tile');
+  }
+
+  /** Get the count of voice users listed under a voice channel. */
+  async getVoiceUserCountInChannel(channelName: string): Promise<number> {
+    const channelSection = this.page.locator('app-rooms-side-panel')
+      .getByRole('button', { name: channelName })
+      .locator('..');
+    const userAvatars = channelSection.locator('app-user-avatar');
+
+    return userAvatars.count();
+  }
+}