feat: implement search highlighting across terminal tiles and expandable sections

test/widgets/expandable_section_test.dart

@@ -0,0 +1,147 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:apidash/widgets/expandable_section.dart';
+
+void main() {
+  testWidgets('ExpandableSection starts collapsed by default', (tester) async {
+    await tester.pumpWidget(
+      const MaterialApp(
+        home: Scaffold(
+          body: ExpandableSection(
+            title: 'Test Section',
+            child: Text('Content'),
+          ),
+        ),
+      ),
+    );
+
+    expect(find.text('Test Section'), findsOneWidget);
+    expect(find.text('Content'), findsNothing);
+    expect(find.byIcon(Icons.keyboard_arrow_down), findsOneWidget);
+  });
+
+  testWidgets('ExpandableSection can be expanded by tapping', (tester) async {
+    await tester.pumpWidget(
+      const MaterialApp(
+        home: Scaffold(
+          body: ExpandableSection(
+            title: 'Test Section',
+            child: Text('Content'),
+          ),
+        ),
+      ),
+    );
+
+    // Tap to expand
+    await tester.tap(find.byType(InkWell));
+    await tester.pumpAndSettle();
+
+    expect(find.text('Test Section'), findsOneWidget);
+    expect(find.text('Content'), findsOneWidget);
+    expect(find.byIcon(Icons.keyboard_arrow_up), findsOneWidget);
+  });
+
+  testWidgets('ExpandableSection respects initiallyOpen parameter',
+      (tester) async {
+    await tester.pumpWidget(
+      const MaterialApp(
+        home: Scaffold(
+          body: ExpandableSection(
+            title: 'Test Section',
+            initiallyOpen: true,
+            child: Text('Content'),
+          ),
+        ),
+      ),
+    );
+
+    expect(find.text('Test Section'), findsOneWidget);
+    expect(find.text('Content'), findsOneWidget);
+    expect(find.byIcon(Icons.keyboard_arrow_up), findsOneWidget);
+  });
+
+  testWidgets('ExpandableSection respects forceOpen parameter', (tester) async {
+    await tester.pumpWidget(
+      const MaterialApp(
+        home: Scaffold(
+          body: ExpandableSection(
+            title: 'Test Section',
+            forceOpen: true,
+            child: Text('Content'),
+          ),
+        ),
+      ),
+    );
+
+    expect(find.text('Test Section'), findsOneWidget);
+    expect(find.text('Content'), findsOneWidget);
+    expect(find.byIcon(Icons.keyboard_arrow_up), findsOneWidget);
+
+    // Tapping should not close it when forceOpen is true
+    await tester.tap(find.byType(InkWell));
+    await tester.pumpAndSettle();
+
+    expect(find.text('Content'), findsOneWidget);
+    expect(find.byIcon(Icons.keyboard_arrow_up), findsOneWidget);
+  });
+
+  testWidgets('ExpandableSection highlights title when highlightQuery matches',
+      (tester) async {
+    await tester.pumpWidget(
+      const MaterialApp(
+        home: Scaffold(
+          body: ExpandableSection(
+            title: 'Network Settings',
+            highlightQuery: 'network',
+            child: Text('Content'),
+          ),
+        ),
+      ),
+    );
+
+    // When highlighting is applied, the title is rendered as RichText instead of Text
+    final richTexts = tester.widgetList<RichText>(find.byType(RichText));
+    final titleRichText = richTexts.firstWhere(
+      (rt) => rt.text.toPlainText() == 'Network Settings',
+      orElse: () => throw Exception('RichText with title not found'),
+    );
+    expect(titleRichText.text.toPlainText(), 'Network Settings');
+  });
+
+  testWidgets('ExpandableSection updates when forceOpen changes',
+      (tester) async {
+    bool forceOpen = false;
+
+    await tester.pumpWidget(
+      MaterialApp(
+        home: Scaffold(
+          body: StatefulBuilder(
+            builder: (context, setState) => Column(
+              children: [
+                ExpandableSection(
+                  title: 'Test Section',
+                  forceOpen: forceOpen ? true : null,
+                  child: const Text('Content'),
+                ),
+                ElevatedButton(
+                  onPressed: () => setState(() => forceOpen = !forceOpen),
+                  child: const Text('Toggle Force Open'),
+                ),
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+
+    // Initially collapsed
+    expect(find.text('Content'), findsNothing);
+
+    // Tap button to set forceOpen to true
+    await tester.tap(find.text('Toggle Force Open'));
+    await tester.pumpAndSettle();
+
+    // Should now be open
+    expect(find.text('Content'), findsOneWidget);
+  });
+}