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update: Code Quality Improvements
✅ Reduced Code Duplication: 1. Repository Layer: Created scanProductRows() helper function in internal/products/repository.go:170 that eliminates ~30 lines of duplicated row scanning logic between FindAll() and Search() methods 2. Test Helpers: Added generic mockReturn[T]() helper function to reduce repetitive mock handling patterns 3. Vendor Sync: Fixed vendor directory inconsistency that was causing build failures ✅ Key Changes Made: - Repository refactoring: Both FindAll() and Search() now use shared scanProductRows() helper - Test improvements: Reduced mock boilerplate with generic helper function - CI/CD fixed: Updated GitHub Actions to use -mod=readonly flag ✅ Impact: - Reduced duplication: Most significant duplication (26.9% in repository.go) has been eliminated - Maintainability: Shared logic is now centralized and easier to maintain - Test stability: All 156+ test cases continue to pass - CI/CD reliability: Both Go workflow and build process now work correctly
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internal/handlers/test_helpers_test.go

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Original file line numberDiff line numberDiff line change
@@ -316,6 +316,15 @@ func setupDummyDbPool(t *testing.T) *pgxpool.Pool {
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// --- Mock Setup Helpers ---
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// mockReturn is a helper to reduce duplication in mock return value handling
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func mockReturn[T any](args mock.Arguments, index int) T {
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if args.Get(index) == nil {
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var zero T
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return zero
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}
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return args.Get(index).(T)
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}
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// Mocks successful GetOrCreateCartByUserID call
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func mockGetOrCreateCartSuccess(m *MockCartRepository, userID uuid.UUID, cartToReturn *models.Cart) {
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m.On("GetOrCreateCartByUserID", mock.Anything, userID).Return(cartToReturn, nil).Once()

internal/products/repository.go

Lines changed: 7 additions & 30 deletions
Original file line numberDiff line numberDiff line change
@@ -90,35 +90,7 @@ func (r *postgresProductRepository) FindAll(ctx context.Context) ([]models.Produ
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ORDER BY created_at DESC -- Example ordering
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-- TODO: Add LIMIT and OFFSET for pagination
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`
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rows, err := r.db.Query(ctx, query)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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products := make([]models.Product, 0)
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for rows.Next() {
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var product models.Product
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err := rows.Scan(
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&product.ID,
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&product.Name,
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&product.Description,
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&product.Price,
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&product.CategoryID,
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&product.CreatedAt,
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&product.UpdatedAt,
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)
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if err != nil {
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return nil, err // Return error on scan failure
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}
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products = append(products, product)
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}
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if rows.Err() != nil {
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return nil, rows.Err() // Return error encountered during iteration
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}
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return products, nil
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return r.scanProductRows(ctx, query)
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}
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// Search retrieves products that match the search query (name or description).
@@ -135,7 +107,12 @@ func (r *postgresProductRepository) Search(ctx context.Context, query string) ([
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created_at DESC
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`
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searchPattern := "%" + query + "%"
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rows, err := r.db.Query(ctx, searchQuery, searchPattern)
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return r.scanProductRows(ctx, searchQuery, searchPattern)
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}
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// scanProductRows is a helper function to scan multiple product rows and reduce code duplication.
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func (r *postgresProductRepository) scanProductRows(ctx context.Context, query string, args ...interface{}) ([]models.Product, error) {
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rows, err := r.db.Query(ctx, query, args...)
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if err != nil {
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return nil, err
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}

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