Refactor architecture, fix all linter issues, and implement specification features (5 tabs, issue dropdowns, contact, info, search, pdf)

test/widget_test.dart

@@ -1,30 +1,45 @@
-// This is a basic Flutter widget test.
-//
-// To perform an interaction with a widget in your test, use the WidgetTester
-// utility in the flutter_test package. For example, you can send tap and scroll
-// gestures. You can also use WidgetTester to find child widgets in the widget
-// tree, read text, and verify that the values of widget properties are correct.
-
-import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
-
-import 'package:oggauergemeindetrommler/main.dart';
+import 'package:oggauergemeindetrommler/models/post_item.dart';
 
 void main() {
-  testWidgets('Counter increments smoke test', (WidgetTester tester) async {
-    // Build our app and trigger a frame.
-    await tester.pumpWidget(const MyApp());
+  group('PostItem Model Tests', () {
+    test('creates PostItem with default values', () {
+      final now = DateTime.now();
+      final item = PostItem(
+        id: 'test-123',
+        title: 'Defekte Straßenlaterne',
+        description: 'Laterne vor Haus Nr. 12 leuchtet nicht mehr.',
+        imageUrl: 'https://example.com/test.jpg',
+        createdDate: now,
+        street: 'Hauptstraße',
+        category: 'Straßenbeleuchtung',
+      );
 
-    // Verify that our counter starts at 0.
-    expect(find.text('0'), findsOneWidget);
-    expect(find.text('1'), findsNothing);
+      expect(item.id, 'test-123');
+      expect(item.title, 'Defekte Straßenlaterne');
+      expect(item.street, 'Hauptstraße');
+      expect(item.category, 'Straßenbeleuchtung');
+      expect(item.imageUrls.length, 1);
+      expect(item.status, 'Gemeldet');
+    });
 
-    // Tap the '+' icon and trigger a frame.
-    await tester.tap(find.byIcon(Icons.add));
-    await tester.pump();
+    test('serializes to Firestore map accurately', () {
+      final now = DateTime.now();
+      final item = PostItem(
+        id: 'test-456',
+        title: 'Müllablagerung am See',
+        description: 'Illegale Ablagerung am Parkplatz',
+        createdDate: now,
+        street: 'Hafen / Seebad',
+        category: 'Müll / Verunreinigung',
+        status: 'In Bearbeitung',
+      );
 
-    // Verify that our counter has incremented.
-    expect(find.text('0'), findsNothing);
-    expect(find.text('1'), findsOneWidget);
+      final map = item.toFirestore();
+      expect(map['title'], 'Müllablagerung am See');
+      expect(map['street'], 'Hafen / Seebad');
+      expect(map['category'], 'Müll / Verunreinigung');
+      expect(map['status'], 'In Bearbeitung');
+    });
   });
 }