fix(lucene adapter and search tests): Improve range query parsing in Lucene adapter and expand search test coverage

test/test.search.advanced.ts

@@ -172,6 +172,21 @@ tap.test('grouping: (Furniture OR Electronics) AND Chair', async () => {
   expect(names).toEqual(['Gaming Chair', 'Office Chair']);
 });
 
+// Additional range and combined query tests
+tap.test('range query price:[30 TO 300] returns expected products', async () => {
+  const res = await Product.search('price:[30 TO 300]');
+  // Expect products with price between 30 and 300 inclusive: Day Light Lamp, Gaming Chair, Office Chair, AirPods
+  expect(res.length).toEqual(4);
+  const names = res.map((r) => r.name).sort();
+  expect(names).toEqual(['AirPods', 'Day Light Lamp', 'Gaming Chair', 'Office Chair']);
+});
+
+tap.test('should filter category and price range', async () => {
+  const res = await Product.search('category:Lighting AND price:[30 TO 40]');
+  expect(res.length).toEqual(1);
+  expect(res[0].name).toEqual('Day Light Lamp');
+});
+
 // Teardown
 tap.test('cleanup advanced search database', async () => {
   await testDb.mongoDb.dropDatabase();