test(backend): add UpdateCompanyStatus tests for admin service

- Added 3 test cases: updates active status, updates verified status, and error when company not found
- All tests passing

backend/internal/services/admin_service_test.go

@@ -181,3 +181,102 @@ func TestAdminService_GetUser(t *testing.T) {
 		}
 	})
 }
+
+func TestAdminService_UpdateCompanyStatus(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Failed to create mock db: %v", err)
+	}
+	defer db.Close()
+
+	service := NewAdminService(db)
+	ctx := context.Background()
+
+	companyColumns := []string{
+		"id", "name", "slug", "type", "document", "address", "region_id", "city_id",
+		"phone", "email", "website", "logo_url", "description", "active", "verified",
+		"created_at", "updated_at",
+	}
+
+	t.Run("updates active status successfully", func(t *testing.T) {
+		companyID := "019b5290-9680-7c06-9ee3-c9e0e117251c"
+		now := time.Now()
+		active := false
+
+		// First: getCompanyByID query
+		mock.ExpectQuery("SELECT id, name, slug").
+			WithArgs(companyID).
+			WillReturnRows(sqlmock.NewRows(companyColumns).
+				AddRow(companyID, "Test Company", "test-company", "employer", nil, nil, nil, nil,
+					nil, "test@company.com", nil, nil, nil, true, false, now, now))
+
+		// Then: UPDATE query
+		mock.ExpectExec("UPDATE companies").
+			WithArgs(false, false, sqlmock.AnyArg(), companyID).
+			WillReturnResult(sqlmock.NewResult(0, 1))
+
+		company, err := service.UpdateCompanyStatus(ctx, companyID, &active, nil)
+		if err != nil {
+			t.Fatalf("Unexpected error: %v", err)
+		}
+		if company == nil {
+			t.Fatal("Expected company, got nil")
+		}
+		if company.Active != false {
+			t.Errorf("Expected active=false, got %v", company.Active)
+		}
+
+		if err := mock.ExpectationsWereMet(); err != nil {
+			t.Errorf("Unmet expectations: %v", err)
+		}
+	})
+
+	t.Run("updates verified status successfully", func(t *testing.T) {
+		companyID := "019b5290-9680-7c06-9ee3-c9e0e117251d"
+		now := time.Now()
+		verified := true
+
+		mock.ExpectQuery("SELECT id, name, slug").
+			WithArgs(companyID).
+			WillReturnRows(sqlmock.NewRows(companyColumns).
+				AddRow(companyID, "Pending Company", "pending-company", "employer", nil, nil, nil, nil,
+					nil, "pending@company.com", nil, nil, nil, true, false, now, now))
+
+		mock.ExpectExec("UPDATE companies").
+			WithArgs(true, true, sqlmock.AnyArg(), companyID).
+			WillReturnResult(sqlmock.NewResult(0, 1))
+
+		company, err := service.UpdateCompanyStatus(ctx, companyID, nil, &verified)
+		if err != nil {
+			t.Fatalf("Unexpected error: %v", err)
+		}
+		if company == nil {
+			t.Fatal("Expected company, got nil")
+		}
+		if company.Verified != true {
+			t.Errorf("Expected verified=true, got %v", company.Verified)
+		}
+
+		if err := mock.ExpectationsWereMet(); err != nil {
+			t.Errorf("Unmet expectations: %v", err)
+		}
+	})
+
+	t.Run("returns error when company not found", func(t *testing.T) {
+		companyID := "non-existent-id"
+		active := false
+
+		mock.ExpectQuery("SELECT id, name, slug").
+			WithArgs(companyID).
+			WillReturnError(err)
+
+		_, updateErr := service.UpdateCompanyStatus(ctx, companyID, &active, nil)
+		if updateErr == nil {
+			t.Error("Expected error for non-existent company")
+		}
+
+		if err := mock.ExpectationsWereMet(); err != nil {
+			t.Errorf("Unmet expectations: %v", err)
+		}
+	})
+}