test(client): add auth page tab tests

client/src/pages/auth/__tests__/AuthPage.test.tsx

@@ -0,0 +1,59 @@
+import { render, screen, fireEvent } from '@testing-library/react'
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
+import { MemoryRouter } from 'react-router-dom'
+import { describe, expect, it, vi } from 'vitest'
+import { AuthPage } from '../ui/AuthPage'
+
+vi.mock('@/shared/api/client', () => ({ apiClient: { post: vi.fn() } }))
+vi.mock('effector-react', async () => {
+  const actual = await vi.importActual('effector-react')
+  return { ...actual, useUnit: () => null }
+})
+
+function renderPage() {
+  const qc = new QueryClient({ defaultOptions: { queries: { retry: false } } })
+  return render(
+    <QueryClientProvider client={qc}>
+      <MemoryRouter>
+        <AuthPage />
+      </MemoryRouter>
+    </QueryClientProvider>,
+  )
+}
+
+describe('AuthPage', () => {
+  it('renders three tabs', () => {
+    renderPage()
+    expect(screen.getByRole('tab', { name: 'Пароль' })).toBeTruthy()
+    expect(screen.getByRole('tab', { name: 'Код' })).toBeTruthy()
+    expect(screen.getByRole('tab', { name: 'Другой способ' })).toBeTruthy()
+  })
+
+  it('shows login form by default on tab 0', () => {
+    renderPage()
+    expect(screen.getByText('Вход')).toBeTruthy()
+    expect(screen.getByText('Регистрация')).toBeTruthy()
+    const buttons = screen.getAllByRole('button')
+    const loginBtn = buttons.find((b) => b.textContent === 'Войти')
+    expect(loginBtn).toBeTruthy()
+  })
+
+  it('switches to register form', () => {
+    renderPage()
+    fireEvent.click(screen.getByText('Регистрация'))
+    expect(screen.getByText('Зарегистрироваться')).toBeTruthy()
+  })
+
+  it('switches to code tab', () => {
+    renderPage()
+    fireEvent.click(screen.getByText('Код'))
+    expect(screen.getByText('Отправить код')).toBeTruthy()
+  })
+
+  it('switches to OAuth tab', () => {
+    renderPage()
+    fireEvent.click(screen.getByText('Другой способ'))
+    expect(screen.getByText('Войти через VK ID')).toBeTruthy()
+    expect(screen.getByText('Войти через Яндекс ID')).toBeTruthy()
+  })
+})