diff --git a/client/src/features/cart/add-to-cart/ui/__tests__/AddToCartButton.test.tsx b/client/src/features/cart/add-to-cart/ui/__tests__/AddToCartButton.test.tsx
new file mode 100644
index 0000000..5d95186
--- /dev/null
+++ b/client/src/features/cart/add-to-cart/ui/__tests__/AddToCartButton.test.tsx
@@ -0,0 +1,38 @@
+import { render, screen, fireEvent } from '@testing-library/react'
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
+import * as notifications from '@/shared/model/cart-notifications'
+import { AddToCartButton } from '../AddToCartButton'
+
+vi.mock('@/entities/cart/api/cart-api', () => ({
+  addToCart: vi.fn(() => Promise.resolve()),
+}))
+
+vi.mock('effector-react', async () => {
+  const actual = await vi.importActual('effector-react')
+  return { ...actual, useUnit: () => ({ id: '1', email: 'test@test.com' }) }
+})
+
+describe('AddToCartButton', () => {
+  const qc = new QueryClient({ defaultOptions: { queries: { retry: false } } })
+
+  beforeEach(() => {
+    vi.clearAllMocks()
+    qc.clear()
+  })
+
+  it('calls cartAdded after successful add', async () => {
+    const spy = vi.spyOn(notifications, 'cartAdded')
+    render(
+      <QueryClientProvider client={qc}>
+        <AddToCartButton productId="test-product" />
+      </QueryClientProvider>,
+    )
+
+    fireEvent.click(screen.getByRole('button', { name: /в корзину/i }))
+
+    await vi.waitFor(() => {
+      expect(spy).toHaveBeenCalled()
+    })
+  })
+})
diff --git a/client/src/features/cart/toggle-cart-icon/ui/__tests__/ToggleCartIcon.test.tsx b/client/src/features/cart/toggle-cart-icon/ui/__tests__/ToggleCartIcon.test.tsx
new file mode 100644
index 0000000..4ed67bb
--- /dev/null
+++ b/client/src/features/cart/toggle-cart-icon/ui/__tests__/ToggleCartIcon.test.tsx
@@ -0,0 +1,69 @@
+import { render, screen, fireEvent } from '@testing-library/react'
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
+import { MemoryRouter } from 'react-router-dom'
+import * as notifications from '@/shared/model/cart-notifications'
+import * as api from '@/entities/cart/api/cart-api'
+import { ToggleCartIcon } from '../ToggleCartIcon'
+
+vi.mock('@/entities/cart/api/cart-api', () => ({
+  addToCart: vi.fn(() => Promise.resolve()),
+  fetchMyCart: vi.fn(() => Promise.resolve({ items: [] })),
+  removeCartItem: vi.fn(() => Promise.resolve()),
+}))
+
+vi.mock('effector-react', async () => {
+  const actual = await vi.importActual('effector-react')
+  return { ...actual, useUnit: () => ({ id: '1', email: 'test@test.com' }) }
+})
+
+describe('ToggleCartIcon', () => {
+  const qc = new QueryClient({ defaultOptions: { queries: { retry: false } } })
+
+  beforeEach(() => {
+    vi.clearAllMocks()
+    qc.clear()
+  })
+
+  it('calls cartAdded after successful add', async () => {
+    const spy = vi.spyOn(notifications, 'cartAdded')
+    render(
+      <QueryClientProvider client={qc}>
+        <MemoryRouter>
+          <ToggleCartIcon productId="test-product" />
+        </MemoryRouter>
+      </QueryClientProvider>,
+    )
+
+    fireEvent.click(screen.getByRole('button', { name: /в корзину/i }))
+
+    await vi.waitFor(() => {
+      expect(spy).toHaveBeenCalled()
+    })
+  })
+
+  it('does not call cartAdded on remove', async () => {
+    vi.mocked(api.fetchMyCart).mockResolvedValueOnce({
+      items: [{ id: 'cart-1', qty: 1, product: { id: 'test-product' } as never }],
+    })
+    const spy = vi.spyOn(notifications, 'cartAdded')
+
+    render(
+      <QueryClientProvider client={qc}>
+        <MemoryRouter>
+          <ToggleCartIcon productId="test-product" />
+        </MemoryRouter>
+      </QueryClientProvider>,
+    )
+
+    await vi.waitFor(() => {
+      expect(screen.getByRole('button', { name: /убрать из корзины/i })).toBeInTheDocument()
+    })
+
+    fireEvent.click(screen.getByRole('button', { name: /убрать из корзины/i }))
+
+    await vi.waitFor(() => {
+      expect(spy).not.toHaveBeenCalled()
+    })
+  })
+})
diff --git a/client/src/shared/ui/__tests__/CartSnackbar.test.tsx b/client/src/shared/ui/__tests__/CartSnackbar.test.tsx
index cf6a3e3..b163e27 100644
--- a/client/src/shared/ui/__tests__/CartSnackbar.test.tsx
+++ b/client/src/shared/ui/__tests__/CartSnackbar.test.tsx
@@ -1,6 +1,6 @@
 import { render, screen, fireEvent, act } from '@testing-library/react'
 import { MemoryRouter } from 'react-router-dom'
-import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest'
 import { cartAdded, cartDismissed } from '@/shared/model/cart-notifications'
 import { CartSnackbar } from '@/shared/ui/CartSnackbar'
 
@@ -15,6 +15,10 @@ beforeEach(() => {
   navigateMock.mockClear()
 })
 
+afterEach(() => {
+  vi.useRealTimers()
+})
+
 function renderWithRouter() {
   render(
     <MemoryRouter initialEntries={['/']}>
@@ -53,7 +57,6 @@ describe('CartSnackbar', () => {
       vi.advanceTimersByTime(4000)
     })
     expect(screen.queryByText(/товар добавлен/i)).not.toBeInTheDocument()
-    vi.useRealTimers()
   })
 
   it('navigates to /cart and closes on "Перейти в корзину" click', () => {
diff --git a/server/prisma/prisma/dev.db b/server/prisma/prisma/dev.db
index 7d9b45c..18b8cec 100644
Binary files a/server/prisma/prisma/dev.db and b/server/prisma/prisma/dev.db differ