test: add test for button components

- add some tests for different states of `AdaptivePrimaryButton`
- add some tests for different states of `AdaptiveSecondaryButton`

test/features/widgets/buttons/adaptive_primary_button/adaptive_primary_button_test.dart

@@ -0,0 +1,113 @@
+import 'package:fluent_ui/fluent_ui.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:pactus_gui_widgetbook/app_styles.dart';
+import 'package:pactus_gui_widgetbook/src/core/enum/request_state_enum.dart';
+import 'package:pactus_gui_widgetbook/src/features/widgets/buttons/adaptive_primary_button/adaptive_primary_button.dart';
+
+void main() {
+  group('AdaptivePrimaryButton', () {
+    late bool wasPressed;
+
+    setUp(() {
+      wasPressed = false;
+    });
+
+    Widget createTestableWidget({
+      required String title,
+      required RequestStateEnum requestState,
+      required VoidCallback? onPressed,
+      required FluentThemeData themeWithAccent,
+    }) {
+      return FluentApp(
+        debugShowCheckedModeBanner: false,
+        theme: themeWithAccent,
+        home: AppTheme(
+          themeData: themeWithAccent,
+          child: ScaffoldPage(
+            content: Center(
+              child: AdaptivePrimaryButton(
+                title: title,
+                requestState: requestState,
+                onPressed: onPressed,
+              ),
+            ),
+          ),
+        ),
+      );
+    }
+
+    testWidgets('renders correctly and is clickable when idle', (WidgetTester tester) async {
+      const testTitle = 'Test Button';
+      final themeWithAccent = AppThemeData.lightTheme(const Color(0xFF0A4D7E));
+
+      await tester.pumpWidget(createTestableWidget(
+        title: testTitle,
+        requestState: RequestStateEnum.loaded,
+        onPressed: () {
+          wasPressed = true;
+        },
+        themeWithAccent: themeWithAccent,
+      ));
+
+      expect(find.text(testTitle), findsOneWidget);
+
+      final button = find.byType(FilledButton);
+      expect(tester.widget<FilledButton>(button).onPressed, isNotNull);
+
+      await tester.tap(button);
+      await tester.pumpAndSettle();
+
+      expect(wasPressed, isTrue);
+    });
+
+    testWidgets('renders correctly and is disabled when loading', (WidgetTester tester) async {
+      const testTitle = 'Loading Button';
+      final themeWithAccent = AppThemeData.lightTheme(const Color(0xFF0A4D7E));
+
+      await tester.pumpWidget(createTestableWidget(
+        title: testTitle,
+        requestState: RequestStateEnum.loading,
+        onPressed: () {
+          wasPressed = true;
+        },
+        themeWithAccent: themeWithAccent,
+      ));
+
+      expect(find.text(testTitle), findsNothing);
+
+      expect(find.byType(SizedBox), findsWidgets);
+
+      final button = find.byType(FilledButton);
+      expect(tester.widget<FilledButton>(button).onPressed, isNull);
+
+      await tester.tap(button);
+      await tester.pumpAndSettle();
+      expect(wasPressed, isFalse);
+    });
+
+
+    testWidgets('renders correctly with dark theme', (WidgetTester tester) async {
+      const testTitle = 'Dark Theme Button';
+      final themeWithAccent = AppThemeData.darkTheme(const Color(0xFF0F6CBD));
+
+      await tester.pumpWidget(createTestableWidget(
+        title: testTitle,
+        requestState: RequestStateEnum.loaded,
+        onPressed: () {
+          wasPressed = true;
+        },
+        themeWithAccent: themeWithAccent,
+      ));
+
+      expect(find.text(testTitle), findsOneWidget);
+
+      final button = find.byType(FilledButton);
+      expect(tester.widget<FilledButton>(button).onPressed, isNotNull);
+
+      await tester.tap(button);
+      await tester.pumpAndSettle();
+
+      expect(wasPressed, isTrue);
+    });
+  });
+}

test/features/widgets/buttons/adaptive_secondary_button/adaptive_secondary_button_test.dart

@@ -0,0 +1,112 @@
+import 'package:fluent_ui/fluent_ui.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:pactus_gui_widgetbook/app_styles.dart';
+import 'package:pactus_gui_widgetbook/src/core/enum/request_state_enum.dart';
+import 'package:pactus_gui_widgetbook/src/features/widgets/buttons/adaptive_secondary_button/adaptive_secondary_button.dart';
+
+void main() {
+  group('AdaptiveSecondaryButton', () {
+    late bool wasPressed;
+
+    setUp(() {
+      wasPressed = false;
+    });
+
+    Widget createTestableWidget({
+      required String title,
+      required RequestStateEnum requestState,
+      required VoidCallback? onPressed,
+      required FluentThemeData themeWithAccent,
+    }) {
+      return FluentApp(
+        debugShowCheckedModeBanner: false,
+        theme: themeWithAccent,
+        home: AppTheme(
+          themeData: themeWithAccent,
+          child: ScaffoldPage(
+            content: Center(
+              child: AdaptiveSecondaryButton(
+                title: title,
+                requestState: requestState,
+                onPressed: onPressed,
+              ),
+            ),
+          ),
+        ),
+      );
+    }
+
+    testWidgets('renders correctly and is clickable when idle', (WidgetTester tester) async {
+      const testTitle = 'Test Button';
+      final themeWithAccent = AppThemeData.lightTheme(const Color(0xFF0A4D7E));
+
+      await tester.pumpWidget(createTestableWidget(
+        title: testTitle,
+        requestState: RequestStateEnum.loaded,
+        onPressed: () {
+          wasPressed = true;
+        },
+        themeWithAccent: themeWithAccent,
+      ));
+
+      expect(find.text(testTitle), findsOneWidget);
+
+      final button = find.byType(OutlinedButton);
+      expect(tester.widget<OutlinedButton>(button).onPressed, isNotNull);
+
+      await tester.tap(button);
+      await tester.pumpAndSettle();
+
+      expect(wasPressed, isTrue);
+    });
+
+    testWidgets('renders correctly and is disabled when loading', (WidgetTester tester) async {
+      const testTitle = 'Loading Button';
+      final themeWithAccent = AppThemeData.lightTheme(const Color(0xFF0A4D7E));
+
+      await tester.pumpWidget(createTestableWidget(
+        title: testTitle,
+        requestState: RequestStateEnum.loading,
+        onPressed: () {
+          wasPressed = true;
+        },
+        themeWithAccent: themeWithAccent,
+      ));
+
+      expect(find.text(testTitle), findsNothing);
+
+      expect(find.byType(SizedBox), findsWidgets);
+
+      final button = find.byType(OutlinedButton);
+      expect(tester.widget<OutlinedButton>(button).onPressed, isNull);
+
+      await tester.tap(button);
+      await tester.pumpAndSettle();
+      expect(wasPressed, isFalse);
+    });
+
+    testWidgets('renders correctly with dark theme', (WidgetTester tester) async {
+      const testTitle = 'Dark Theme Button';
+      final themeWithAccent = AppThemeData.darkTheme(const Color(0xFF0F6CBD));
+
+      await tester.pumpWidget(createTestableWidget(
+        title: testTitle,
+        requestState: RequestStateEnum.loaded,
+        onPressed: () {
+          wasPressed = true;
+        },
+        themeWithAccent: themeWithAccent,
+      ));
+
+      expect(find.text(testTitle), findsOneWidget);
+
+      final button = find.byType(OutlinedButton);
+      expect(tester.widget<OutlinedButton>(button).onPressed, isNotNull);
+
+      await tester.tap(button);
+      await tester.pumpAndSettle();
+
+      expect(wasPressed, isTrue);
+    });
+  });
+}