Commit 1a9a31e

@@ -0,0 +1,67 @@
+import 'package:blood_pressure_app/components/color_picker.dart';
+import 'package:blood_pressure_app/components/settings/color_picker_list_tile.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_gen/gen_l10n/app_localizations.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  group('ColorSelectionListTile', () {
+    testWidgets('should initialize without errors', (widgetTester) async {
+      await widgetTester.pumpWidget(_materialApp(ColorSelectionListTile(
+        title: const Text('Test'),
+        onMainColorChanged: (Color value) {  },
+        initialColor: Colors.teal,)));
+    });
+    testWidgets('should preview color', (widgetTester) async {
+      await widgetTester.pumpWidget(_materialApp(ColorSelectionListTile(
+        title: const Text('Test'),
+        onMainColorChanged: (Color value) {  },
+        initialColor: Colors.teal,)));
+
+      expect(find.byType(CircleAvatar), findsOneWidget);
+      expect(widgetTester.widget(find.byType(CircleAvatar)), isA<CircleAvatar>().having(
+              (p0) => p0.backgroundColor, 'display color', Colors.teal));
+    });
+    testWidgets('should show colorPicker on tap', (widgetTester) async {
+      await widgetTester.pumpWidget(_materialApp(ColorSelectionListTile(
+        title: const Text('Test'),
+        onMainColorChanged: (Color value) {  },
+        initialColor: Colors.teal,)));
+
+      expect(find.byType(ColorPicker), findsNothing);
+      await widgetTester.tap(find.byType(ListTile));
+      await widgetTester.pumpAndSettle();
+      expect(find.byType(ColorPicker), findsOneWidget);
+    });
+    testWidgets('should notify on color changed', (widgetTester) async {
+      int callCount = 0;
+      await widgetTester.pumpWidget(_materialApp(ColorSelectionListTile(
+        title: const Text('Test'),
+        onMainColorChanged: (Color value) {
+          callCount += 1;
+          expect(value, Colors.red);
+        },
+        initialColor: Colors.teal,)));
+
+      expect(find.byType(ColorPicker), findsNothing);
+      await widgetTester.tap(find.byType(ListTile));
+      await widgetTester.pumpAndSettle();
+      expect(find.byType(ColorPicker), findsOneWidget);
+
+      // tap red (color list offset by one)
+      await widgetTester.tap(find.byType(InkWell).at(3));
+      await widgetTester.pumpAndSettle();
+      expect(find.byType(ColorPicker), findsNothing);
+
+      expect(callCount, 1);
+    });
+  });
+}
+
+Widget _materialApp(Widget child) {
+  return MaterialApp(
+    localizationsDelegates: const [AppLocalizations.delegate,],
+    locale: const Locale('en'),
+    home: Scaffold(body:child),
+  );
+}
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