iv_and/product_test.dart

import 'package:flutter_test/flutter_test.dart';
import 'package:sqflite/sqflite.dart';
import 'package:path_provider/path_provider.dart';
import 'db_helper.dart';
import 'product.dart';

void main() {
  group('Product Tests', () {
    late Database db;

    setUp(() async {
      final io.Directory documentsDirectory = await getApplicationDocumentsDirectory();
      String path = '${documentsDirectory.path}/test.db';
      db = await openDatabase(path, version: 1, onCreate: DbHelper()._onCreate);
    });

    tearDown(() async {
      await db.close();
      final io.Directory documentsDirectory = await getApplicationDocumentsDirectory();
      String path = '${documentsDirectory.path}/test.db';
      await io.File(path).delete();
    });

    test('Add and fetch product', () async {
      final product = Product(
        name: 'Test Product',
        unitPrice: 100.0,
        discount: 0.1,
      );

      await db.insert('products', product.toMap());

      final List<Map<String, dynamic>> maps = await db.query('products');
      expect(maps.length, 1);

      final fetchedProduct = Product.fromMap(maps.first);
      expect(fetchedProduct.name, 'Test Product');
    });
  });
}