add service

TESTING.md

@@ -100,6 +100,42 @@ func TestAuthService_Login_Success(t *testing.T) {
     
     // Minimock автоматически проверит что все ожидания выполнены
 }
+
+func TestAuthService_Register_Success(t *testing.T) {
+    mockUserRepo := mocks.NewUserRepositoryMock(t)
+    mockSessionRepo := mocks.NewSessionRepositoryMock(t)
+    mockInviteRepo := mocks.NewInviteRepositoryMock(t)
+    
+    mockInviteRepo.FindActiveByCodeMock.Expect(context.Background(), int64(123456)).Return(&model.InviteCode{
+        Code: 123456,
+        CanBeUsedCount: 5,
+        UsedCount: 0,
+    }, nil)
+    
+    mockUserRepo.FindByEmailHashMock.Expect(context.Background(), "email_hash").Return(nil, 
+        errors.NewBusinessError(errors.UserNotFound, "user not found"))
+    
+    mockUserRepo.CreateTxMock.Return(nil)
+    mockInviteRepo.DecrementCanBeUsedCountTxMock.Return(nil)
+    mockSessionRepo.CreateMock.Return(nil)
+    
+    authService := service.NewAuthService(mockUserRepo, mockSessionRepo, mockInviteRepo, txManager, "secret", "cryptosecret")
+    
+    accessToken, refreshToken, err := authService.Register(
+        context.Background(),
+        "newuser@example.com",
+        "password123",
+        "New User",
+        "+1234567890",
+        123456,
+        "127.0.0.1",
+        "test-agent",
+    )
+    
+    assert.NoError(t, err)
+    assert.NotEmpty(t, accessToken)
+    assert.NotEmpty(t, refreshToken)
+}
 ```
 
 ### Преимущества minimock