test(auth): add tests for forgot password form

src/features/auth/forgot-password/components/forgot-password-form.test.tsx

@@ -0,0 +1,52 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+import { render, type RenderResult } from 'vitest-browser-react'
+import { userEvent, type Locator } from 'vitest/browser'
+import { ForgotPasswordForm } from './forgot-password-form'
+
+const navigateMock = vi.fn()
+
+vi.mock('@tanstack/react-router', async (orig) => {
+  const actual = await orig<typeof import('@tanstack/react-router')>()
+  return { ...actual, useNavigate: () => navigateMock }
+})
+
+vi.mock('@/lib/utils', async (orig) => ({
+  ...(await orig()),
+  sleep: vi.fn(() => Promise.resolve()),
+}))
+
+describe('ForgotPasswordForm', () => {
+  let screen: RenderResult
+  let emailInput: Locator
+  let continueButton: Locator
+
+  beforeEach(async () => {
+    vi.clearAllMocks()
+
+    screen = await render(<ForgotPasswordForm />)
+    emailInput = screen.getByRole('textbox', { name: /^Email$/i })
+    continueButton = screen.getByRole('button', { name: /^Continue$/i })
+  })
+
+  it('renders email field and continue button', async () => {
+    expect(emailInput).toBeInTheDocument()
+    expect(continueButton).toBeInTheDocument()
+  })
+
+  it('shows validation when submitting empty form', async () => {
+    await userEvent.click(continueButton)
+    expect(screen.getByText(/^Please enter your email\.$/i)).toBeInTheDocument()
+  })
+
+  it('resets the form and navigates to /otp on success', async () => {
+    await userEvent.fill(emailInput, 'a@b.com')
+    await userEvent.click(continueButton)
+
+    await vi.waitFor(() =>
+      expect(navigateMock).toHaveBeenCalledWith({ to: '/otp' })
+    )
+
+    // Form should reset on success
+    expect(emailInput).toHaveValue('')
+  })
+})