add Slack webhook UI and E2E tests

Author: neilv-g

e2e/tests/notification-channels.spec.ts

@@ -17,58 +17,182 @@
 import {test, expect} from '@playwright/test';
 import {loginAsUser, BASE_URL, expectDualThemeScreenshot} from './utils';
 
-test.beforeEach(async () => {});
+test('redirects unauthenticated user to home and shows toast', async ({
+  page,
+}) => {
+  await page.goto(`${BASE_URL}/settings/notification-channels`);
+
+  // Expect to be redirected to the home page.
+  await expect(page).toHaveURL(`${BASE_URL}/`);
+  // FYI: We do not assert the toast because it flashes on the screen due to the redirect.
+});
 
 test.describe('Notification Channels Page', () => {
-  test('redirects unauthenticated user to home and shows toast', async ({
-    page,
-  }) => {
+  test.beforeEach(async ({page}) => {
+    await loginAsUser(page, 'test user 1');
     await page.goto(`${BASE_URL}/settings/notification-channels`);
-
-    // Expect to be redirected to the home page.
-    await expect(page).toHaveURL(BASE_URL);
-    // FYI: We do not assert the toast because it flashes on the screen due to the redirect.
   });
 
   test('authenticated user sees their email channel and coming soon messages', async ({
     page,
   }) => {
-    // Log in as a test user
-    await loginAsUser(page, 'test user 1');
-
-    // Navigate to the notification channels page
-    await page.goto(`${BASE_URL}/settings/notification-channels`);
-
-    // Move the mouse to a neutral position to avoid hover effects on the screenshot
-    await page.mouse.move(0, 0);
-
-    // Expect the URL to be correct
+    // Expect the URL to be correct.
     await expect(page).toHaveURL(`${BASE_URL}/settings/notification-channels`);
 
-    // Verify Email panel content
+    // Verify Email panel content.
     const emailPanel = page.locator('webstatus-notification-email-channels');
     await expect(emailPanel).toBeVisible();
     await expect(emailPanel).toContainText('test.user.1@example.com');
     await expect(emailPanel).toContainText('Enabled');
 
-    // Verify RSS panel content
+    // Verify RSS panel content.
     const rssPanel = page.locator('webstatus-notification-rss-channels');
     await expect(rssPanel).toBeVisible();
     await expect(rssPanel).toContainText('Coming soon');
 
-    // Verify Webhook panel content
+    // Verify Webhook panel content.
     const webhookPanel = page.locator(
       'webstatus-notification-webhook-channels',
     );
     await expect(webhookPanel).toBeVisible();
-    await expect(webhookPanel).toContainText('Coming soon');
 
-    // Take a screenshot for visual regression
+    // Move the mouse to a neutral position to avoid hover effects on the screenshot.
+    await page.mouse.move(0, 0);
+
+    // Take a screenshot for visual regression.
     const pageContainer = page.locator('.page-container');
     await expectDualThemeScreenshot(
       page,
       pageContainer,
       'notification-channels-authenticated',
     );
   });
+
+  test('authenticated user can create and delete a slack webhook channel', async ({
+    page,
+  }) => {
+    const nonce = Date.now();
+    const webhookName = 'PlaywrightTestCreateDeleteTest ' + nonce;
+    const webhookUrl =
+      'https://hooks.slack.com/services/PLAYWRIGHT/TEST/' + nonce;
+
+    const webhookPanel = page.locator(
+      'webstatus-notification-webhook-channels',
+    );
+
+    // Don't assert that no webhook channels are configured.
+    // There may be some from previous test runs or from manual testing.
+
+    // Click Create button.
+    await webhookPanel
+      .getByRole('button', {name: 'Create Webhook channel'})
+      .click();
+
+    // Fill the dialog.
+    const dialog = webhookPanel.locator('sl-dialog');
+    await expect(dialog).toBeVisible();
+
+    await dialog.getByRole('textbox', {name: 'Name'}).fill(webhookName);
+    await dialog
+      .getByRole('textbox', {name: 'Slack Webhook URL'})
+      .fill(webhookUrl);
+
+    await dialog.getByRole('button', {name: 'Create', exact: true}).click();
+
+    // Verify it's in the list.
+    await expect(dialog).not.toBeVisible();
+    const channelItem = webhookPanel.locator('.channel-item', {
+      hasText: webhookName,
+    });
+    await expect(channelItem).toBeVisible();
+
+    // Delete it - handle the browser confirm dialog
+    page.once('dialog', async dialog => {
+      expect(dialog.message()).toBe(
+        'Are you sure you want to delete this webhook channel?',
+      );
+      await dialog.accept();
+    });
+
+    await channelItem.getByLabel('Delete').click();
+
+    // Verify it's gone.
+    await expect(channelItem).not.toBeVisible();
+  });
+
+  test('authenticated user can update a slack webhook channel', async ({
+    page,
+  }) => {
+    // Use a nonce to make sure we don't have any stale data from previous test runs.
+    // Avoid using resetUserData() since it's an expensive operation.
+    const nonce = Date.now();
+    const originalName = 'PlaywrightTestUpdateOriginal ' + nonce;
+    const originalUrl =
+      'https://hooks.slack.com/services/PLAYWRIGHT/TEST/original-' + nonce;
+    const updatedName = 'PlaywrightTestUpdateUpdated ' + nonce;
+    const updatedUrl =
+      'https://hooks.slack.com/services/PLAYWRIGHT/TEST/updated-' + nonce;
+
+    // Create a channel first.
+    const webhookPanel = page.locator(
+      'webstatus-notification-webhook-channels',
+    );
+    await page.waitForLoadState('networkidle');
+    await webhookPanel
+      .getByRole('button', {name: 'Create Webhook channel'})
+      .click();
+    const dialog = webhookPanel.locator('sl-dialog');
+    await expect(dialog).toBeVisible({timeout: 10000});
+    await dialog.getByRole('textbox', {name: 'Name'}).fill(originalName);
+    await dialog
+      .getByRole('textbox', {name: 'Slack Webhook URL'})
+      .fill(originalUrl);
+    await dialog.getByRole('button', {name: 'Create', exact: true}).click();
+
+    // Verify it was created.
+    await expect(dialog).not.toBeVisible({timeout: 10000});
+    const originalItem = webhookPanel.locator('.channel-item', {
+      hasText: originalName,
+    });
+    await expect(originalItem).toBeVisible();
+
+    await originalItem.getByLabel('Edit').click();
+
+    // Verify current values in dialog.
+    await expect(dialog).toBeVisible();
+    await expect(dialog.getByRole('textbox', {name: 'Name'})).toHaveValue(
+      originalName,
+    );
+    await expect(
+      dialog.getByRole('textbox', {name: 'Slack Webhook URL'}),
+    ).toHaveValue(originalUrl);
+
+    // Update the values.
+    await dialog.getByRole('textbox', {name: 'Name'}).fill(updatedName);
+    await dialog
+      .getByRole('textbox', {name: 'Slack Webhook URL'})
+      .fill(updatedUrl);
+
+    await dialog.getByRole('button', {name: 'Save', exact: true}).click();
+
+    // Verify it was updated.
+    await expect(dialog).not.toBeVisible({timeout: 10000});
+    const updatedItem = webhookPanel.locator('.channel-item', {
+      hasText: updatedName,
+    });
+    await expect(updatedItem).toBeVisible();
+    await expect(originalItem).not.toBeVisible();
+
+    // Cleanup.
+    page.once('dialog', async dialog => {
+      expect(dialog.message()).toBe(
+        'Are you sure you want to delete this webhook channel?',
+      );
+      await dialog.accept();
+    });
+    const deleteButton = updatedItem.locator('sl-button[aria-label="Delete"]');
+    await expect(deleteButton).toBeVisible();
+    await deleteButton.click();
+    await expect(updatedItem).not.toBeVisible();
+  });
 });

e2e/tests/notification-channels.spec.ts-snapshots/notification-channels-authenticated-chromium-linux.png

@@ -445,6 +445,87 @@ export class APIClient {
     });
   }
 
+  public async createNotificationChannel(
+    token: string,
+    channel: components['schemas']['CreateNotificationChannelRequest'],
+  ): Promise<components['schemas']['NotificationChannelResponse']> {
+    const options: FetchOptions<
+      FilterKeys<paths['/v1/users/me/notification-channels'], 'post'>
+    > = {
+      headers: {
+        Authorization: `Bearer ${token}`,
+      },
+      body: channel,
+      credentials: temporaryFetchOptions.credentials,
+    };
+    const response = await this.client.POST(
+      '/v1/users/me/notification-channels',
+      options,
+    );
+    const error = response.error;
+    if (error !== undefined) {
+      throw createAPIError(error);
+    }
+    return response.data;
+  }
+
+  public async updateNotificationChannel(
+    token: string,
+    channelId: string,
+    request: components['schemas']['UpdateNotificationChannelRequest'],
+  ): Promise<components['schemas']['NotificationChannelResponse']> {
+    const options: FetchOptions<
+      FilterKeys<
+        paths['/v1/users/me/notification-channels/{channel_id}'],
+        'patch'
+      >
+    > = {
+      headers: {
+        Authorization: `Bearer ${token}`,
+      },
+      params: {
+        path: {
+          channel_id: channelId,
+        },
+      },
+      body: request,
+      credentials: temporaryFetchOptions.credentials,
+    };
+    const response = await this.client.PATCH(
+      '/v1/users/me/notification-channels/{channel_id}',
+      options,
+    );
+    const error = response.error;
+    if (error !== undefined) {
+      throw createAPIError(error);
+    }
+    return response.data;
+  }
+
+  public async deleteNotificationChannel(token: string, channelId: string) {
+    const options = {
+      ...temporaryFetchOptions,
+      params: {
+        path: {
+          channel_id: channelId,
+        },
+      },
+      headers: {
+        Authorization: `Bearer ${token}`,
+      },
+    };
+    const response = await this.client.DELETE(
+      '/v1/users/me/notification-channels/{channel_id}',
+      options,
+    );
+    const error = response.error;
+    if (error !== undefined) {
+      throw createAPIError(error);
+    }
+
+    return response.data;
+  }
+
   public async pingUser(
     token: string,
     pingOptions?: {githubToken?: string},

e2e/tests/notification-channels.spec.ts-snapshots/notification-channels-authenticated-dark-chromium-linux.png

@@ -0,0 +1,51 @@
+/**
+ * Copyright 2026 Google LLC
+ *
+ * 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 {html, TemplateResult} from 'lit';
+import {type components} from 'webstatus.dev-backend';
+import './webhook-config-form.js';
+
+import {ChannelConfigUpdate} from './channel-config-types.js';
+
+type ChannelType = components['schemas']['NotificationChannel']['type'];
+type ChannelResponse = components['schemas']['NotificationChannelResponse'];
+
+export const ChannelConfigRegistry = {
+  renderConfig(
+    type: ChannelType,
+    channel: ChannelResponse | undefined,
+    onUpdate: (update: ChannelConfigUpdate) => void,
+  ): TemplateResult {
+    switch (type) {
+      case 'webhook':
+        return html`<webhook-config-form
+          class="config-form"
+          .channel=${channel}
+          @change=${(e: CustomEvent<ChannelConfigUpdate>) => onUpdate(e.detail)}
+        ></webhook-config-form>`;
+      case 'email':
+        return html`<div>
+          Email:
+          ${channel?.config.type === 'email'
+            ? (channel.config as components['schemas']['EmailConfig']).address
+            : ''}
+          (Verified)
+        </div>`;
+      default:
+        return html`<p>Unsupported channel type: ${type}</p>`;
+    }
+  },
+};

e2e/tests/notification-channels.spec.ts-snapshots/notification-channels-authenticated-dark-firefox-linux.png

@@ -0,0 +1,33 @@
+/**
+ * Copyright 2026 Google LLC
+ *
+ * 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 {components} from 'webstatus.dev-backend';
+
+type UpdateRequest = components['schemas']['UpdateNotificationChannelRequest'];
+type UpdateMask = UpdateRequest['update_mask'][number];
+type ChannelResponse = components['schemas']['NotificationChannelResponse'];
+
+export interface ChannelConfigUpdate {
+  updates: Partial<UpdateRequest>;
+  mask: UpdateMask[];
+}
+
+export interface ChannelConfigComponent extends HTMLElement {
+  channel?: ChannelResponse;
+  getUpdate(): ChannelConfigUpdate;
+  isDirty(): boolean;
+  validate(): boolean;
+}