ui/src/test/e2e/alerting.spec.ts

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+import { test, expect } from './fixtures';
+
+/**
+ * Plan 03 alerting smoke suite.
+ *
+ * Covers the CRUD + navigation paths that don't require event injection:
+ *   - sidebar → inbox
+ *   - create + delete a rule via the 5-step wizard
+ *   - CMD-K opens, closes cleanly
+ *   - silence create + end-early
+ *
+ * End-to-end fire→ack→clear is covered server-side by `AlertingFullLifecycleIT`
+ * (Plan 02). Exercising it from the UI would require injecting executions
+ * into ClickHouse, which is out of scope for this smoke.
+ *
+ * Note: the design-system `SectionHeader` renders a generic element (not role=heading),
+ * so page headings are asserted via `getByText`.
+ */
+
+test.describe('alerting UI smoke', () => {
+  test('sidebar Alerts section navigates to inbox', async ({ page }) => {
+    // Click the Alerts sidebar section header. On navigation the accordion
+    // will already be expanded; the "Alerts" label is on the toggle button.
+    await page.getByRole('button', { name: /^(collapse|expand) alerts$/i }).first().click();
+    await expect(page).toHaveURL(/\/alerts\/inbox/, { timeout: 10_000 });
+    // Inbox page renders "Inbox" text + "Mark all read" button.
+    await expect(page.getByText(/^Inbox$/)).toBeVisible();
+    await expect(page.getByRole('button', { name: /mark all read/i })).toBeVisible();
+  });
+
+  test('create + delete a rule via the wizard', async ({ page }) => {
+    // Unique name per run so leftover rules from crashed prior runs don't
+    // trip the strict-mode "multiple matches" check.
+    const ruleName = `e2e smoke rule ${Date.now()}`;
+
+    await page.goto('/alerts/rules');
+    await expect(page.getByText(/^Alert rules$/)).toBeVisible();
+
+    await page.getByRole('link', { name: /new rule/i }).click();
+    await expect(page).toHaveURL(/\/alerts\/rules\/new/);
+
+    // Step 1 — Scope. DS FormField renders the label as a generic element
+    // (not `htmlFor` wired), so the textbox's accessible name is its placeholder.
+    await page.getByPlaceholder('Order API error rate').fill(ruleName);
+    await page.getByRole('button', { name: /^next$/i }).click();
+
+    // Step 2 — Condition (leave at ROUTE_METRIC default)
+    await page.getByRole('button', { name: /^next$/i }).click();
+
+    // Step 3 — Trigger (defaults)
+    await page.getByRole('button', { name: /^next$/i }).click();
+
+    // Step 4 — Notify: default title/message templates are pre-populated;
+    // targets/webhooks empty is OK for smoke.
+    await page.getByRole('button', { name: /^next$/i }).click();
+
+    // Step 5 — Review + save
+    await page.getByRole('button', { name: /^create rule$/i }).click();
+
+    // Land on rules list, rule appears in the table.
+    await expect(page).toHaveURL(/\/alerts\/rules$/, { timeout: 10_000 });
+    const main = page.locator('main');
+    await expect(main.getByRole('link', { name: ruleName })).toBeVisible({ timeout: 10_000 });
+
+    // Cleanup: delete.
+    page.once('dialog', (d) => d.accept());
+    await page
+      .getByRole('row', { name: new RegExp(ruleName) })
+      .getByRole('button', { name: /^delete$/i })
+      .click();
+    await expect(main.getByRole('link', { name: ruleName })).toHaveCount(0);
+  });
+
+  test('CMD-K palette opens + closes', async ({ page }) => {
+    await page.goto('/alerts/inbox');
+    // The DS CommandPalette is toggled by the SearchTrigger button in the top bar
+    // (accessible name "Open search"). Ctrl/Cmd+K is wired inside the DS but
+    // clicking the button is the deterministic path.
+    await page.getByRole('button', { name: /open search/i }).click();
+    const dialog = page.getByRole('dialog').first();
+    await expect(dialog).toBeVisible({ timeout: 5_000 });
+    await page.keyboard.press('Escape');
+    await expect(dialog).toBeHidden();
+  });
+
+  test('silence create + end-early', async ({ page }) => {
+    await page.goto('/alerts/silences');
+    await expect(page.getByText(/^Alert silences$/)).toBeVisible();
+
+    const unique = `smoke-app-${Date.now()}`;
+    // DS FormField labels aren't `htmlFor`-wired, so target via parent-of-label → textbox.
+    const form = page.locator('main');
+    await form.getByText(/^App slug/).locator('..').getByRole('textbox').fill(unique);
+    await form.getByRole('spinbutton').fill('1');
+    await form.getByPlaceholder('Maintenance window').fill('e2e smoke');
+    await page.getByRole('button', { name: /create silence/i }).click();
+
+    await expect(page.getByText(unique).first()).toBeVisible({ timeout: 10_000 });
+
+    page.once('dialog', (d) => d.accept());
+    await page
+      .getByRole('row', { name: new RegExp(unique) })
+      .getByRole('button', { name: /^end$/i })
+      .click();
+    await expect(page.getByText(unique)).toHaveCount(0);
+  });
+});

ui/src/test/e2e/fixtures.ts

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+import { test as base, expect } from '@playwright/test';
+
+/**
+ * E2E fixtures for the alerting UI smoke suite.
+ *
+ * Auth happens once per test via an auto-applied fixture. Override creds via:
+ *   E2E_ADMIN_USER=... E2E_ADMIN_PASS=... npm run test:e2e
+ *
+ * The fixture logs in to the local form (not OIDC). The backend in the
+ * Docker-compose stack defaults to `admin` / `admin` for the local login.
+ */
+export const ADMIN_USER = process.env.E2E_ADMIN_USER ?? 'admin';
+export const ADMIN_PASS = process.env.E2E_ADMIN_PASS ?? 'admin';
+
+type Fixtures = {
+  loggedIn: void;
+};
+
+export const test = base.extend<Fixtures>({
+  loggedIn: [
+    async ({ page }, use) => {
+      // `?local` keeps the login page's auto-OIDC-redirect from firing so the
+      // form-based login works even when an OIDC config happens to be present.
+      await page.goto('/login?local');
+      await page.getByLabel(/username/i).fill(ADMIN_USER);
+      await page.getByLabel(/password/i).fill(ADMIN_PASS);
+      await page.getByRole('button', { name: /sign in/i }).click();
+      // Default landing after login is /exchanges (via Navigate redirect).
+      await expect(page).toHaveURL(/\/(exchanges|alerts|dashboard)/, { timeout: 15_000 });
+      // Env selection is required for every alerts query (useSelectedEnv gate).
+      // Pick the default env so hooks enable.
+      await page.getByRole('combobox').selectOption({ label: 'default' });
+      await use();
+    },
+    { auto: true },
+  ],
+});
+
+export { expect };