diff --git a/frontend/src/test/unit/admin.service.test.js b/frontend/src/test/unit/admin.service.test.js
new file mode 100644
index 0000000..c61fd69
--- /dev/null
+++ b/frontend/src/test/unit/admin.service.test.js
@@ -0,0 +1,161 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+import {
+  getStatsApi,
+  getUsersApi,
+  drawWinnerApi,
+  getEmailingContactsApi,
+  getWinnerApi,
+  getEmployeesApi,
+  getEmployeeDeliveriesApi,
+  getDeliveryByTicketCodeApi,
+  createEmployeeApi,
+} from '../../services/admin'
+
+describe('admin service', () => {
+  beforeEach(() => {
+    localStorage.clear()
+    localStorage.setItem('token', 'test-token')
+    vi.restoreAllMocks()
+  })
+
+  function mockFetch(data, ok = true, status = 200) {
+    vi.stubGlobal(
+      'fetch',
+      vi.fn().mockResolvedValue({
+        ok,
+        status,
+        json: vi.fn().mockResolvedValue(data),
+      }),
+    )
+  }
+
+  it('getStatsApi retourne les statistiques', async () => {
+    mockFetch({ users: 10 })
+
+    const result = await getStatsApi()
+
+    expect(result).toEqual({ users: 10 })
+    expect(fetch).toHaveBeenCalledWith(
+      '/api/admin/stats',
+      expect.objectContaining({
+        headers: expect.objectContaining({
+          Authorization: 'Bearer test-token',
+        }),
+      }),
+    )
+  })
+
+  it('getUsersApi retourne les utilisateurs', async () => {
+    mockFetch({ users: [{ id: 1 }] })
+
+    await expect(getUsersApi()).resolves.toEqual({
+      users: [{ id: 1 }],
+    })
+  })
+
+  it('drawWinnerApi effectue un POST', async () => {
+    mockFetch({ winner: { id: 1 } })
+
+    const result = await drawWinnerApi()
+
+    expect(result).toEqual({ winner: { id: 1 } })
+    expect(fetch).toHaveBeenCalledWith(
+      '/api/admin/draw',
+      expect.objectContaining({
+        method: 'POST',
+      }),
+    )
+  })
+
+  it('getEmailingContactsApi retourne les contacts', async () => {
+    mockFetch({ contacts: ['test@example.com'] })
+
+    await expect(getEmailingContactsApi()).resolves.toEqual({
+      contacts: ['test@example.com'],
+    })
+  })
+
+  it('getWinnerApi retourne null si aucun gagnant', async () => {
+    mockFetch({}, false, 404)
+
+    await expect(getWinnerApi()).resolves.toBeNull()
+  })
+
+  it('getWinnerApi retourne le gagnant', async () => {
+    mockFetch({ winner: { id: 5 } })
+
+    await expect(getWinnerApi()).resolves.toEqual({
+      winner: { id: 5 },
+    })
+  })
+
+  it('getEmployeesApi retourne les employés', async () => {
+    mockFetch({ employees: [{ id: 10 }] })
+
+    await expect(getEmployeesApi()).resolves.toEqual({
+      employees: [{ id: 10 }],
+    })
+  })
+
+  it('getEmployeeDeliveriesApi retourne les remises', async () => {
+    mockFetch({
+      employee: { id: 10 },
+      deliveries: [],
+    })
+
+    await expect(getEmployeeDeliveriesApi(10)).resolves.toEqual({
+      employee: { id: 10 },
+      deliveries: [],
+    })
+  })
+
+  it('getDeliveryByTicketCodeApi encode le code du ticket', async () => {
+    mockFetch({ delivery: { id: 1 } })
+
+    await getDeliveryByTicketCodeApi(' ABC 123 ')
+
+    expect(fetch).toHaveBeenCalledWith(
+      '/api/admin/deliveries/ABC%20123',
+      expect.anything(),
+    )
+  })
+
+  it('createEmployeeApi crée un employé', async () => {
+    mockFetch({ employee: { id: 20 } })
+
+    await expect(
+      createEmployeeApi({
+        firstname: 'Jean',
+        lastname: 'Dupont',
+        email: 'jean@example.com',
+      }),
+    ).resolves.toEqual({
+      employee: { id: 20 },
+    })
+
+    expect(fetch).toHaveBeenCalledWith(
+      '/api/admin/employees',
+      expect.objectContaining({
+        method: 'POST',
+        body: JSON.stringify({
+          firstname: 'Jean',
+          lastname: 'Dupont',
+          email: 'jean@example.com',
+        }),
+      }),
+    )
+  })
+
+  it('transforme les erreurs API en Error', async () => {
+    mockFetch(
+      { message: 'Erreur serveur' },
+      false,
+      500,
+    )
+
+    await expect(getStatsApi()).rejects.toMatchObject({
+      message: 'Erreur serveur',
+      status: 500,
+    })
+  })
+})