Add test for ProductRow read-only display

src/components/ProductRow.test.tsx

@@ -0,0 +1,35 @@
+import { render, screen } from '@testing-library/react';
+import { describe, expect, it, vi } from 'vitest';
+import { ProductRow } from './ProductRow';
+import { Product } from '../models/Product';
+
+const product: Product = {
+  id: 'prod-1',
+  name: 'Sparkling Water',
+  category: 'Drinks',
+  unit_type: 'bottle',
+  barcode: '123456',
+  archived: false,
+  created_at: 0,
+  updated_at: 0,
+};
+
+const categories = ['Drinks', 'Snacks'];
+
+describe('ProductRow', () => {
+  it('shows name, category, and barcode without unit text in read-only mode', () => {
+    render(
+      <ProductRow
+        product={product}
+        categories={categories}
+        onSave={vi.fn()}
+        onDelete={vi.fn()}
+      />,
+    );
+
+    expect(screen.getByText('Sparkling Water')).toBeInTheDocument();
+    expect(screen.getByText('Drinks')).toBeInTheDocument();
+    expect(screen.getByText(/Barcode: 123456/)).toBeInTheDocument();
+    expect(screen.queryByText(/bottle/i)).not.toBeInTheDocument();
+  });
+});