Draft test added

Author: BrawlerXull

test/taskfunctions/draft_test.dart

@@ -0,0 +1,92 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:taskwarrior/app/models/models.dart';
+import 'package:taskwarrior/app/utils/taskfunctions/draft.dart';
+
+void main() {
+  group('Draft Tests', () {
+    test('Setting status to completed updates end date', () {
+      Task original = Task(
+        (b) => b
+          ..id = 1
+          ..description = 'Task 1'
+          ..status = 'pending'
+          ..start = DateTime.utc(2023, 1, 1)
+          ..priority = 'H'
+          ..project = 'Project A'
+          ..tags.replace(['tag1', 'tag2'])
+          ..uuid = 'uuid1'
+          ..description = 'Task 1 Description'
+          ..entry = DateTime(2024, 7, 20)
+          ..modified = DateTime(2024, 7, 21)
+          ..start = DateTime(2024, 7, 22)
+          ..due = DateTime(2024, 7, 23),
+      );
+
+      Draft draft = Draft(original);
+
+      draft.set('status', 'completed');
+
+      expect(draft.draft.status, 'completed');
+
+      expect(draft.draft.end, isNotNull);
+    });
+
+    test('Setting status to pending does not update end date', () {
+      Task original = Task(
+        (b) => b
+          ..id = 2
+          ..description = 'Task 2'
+          ..status = 'completed'
+          ..start = DateTime.utc(2023, 1, 1)
+          ..priority = 'H'
+          ..project = 'Project A'
+          ..tags.replace(['tag1', 'tag2'])
+          ..uuid = 'uuid2'
+          ..description = 'Task 2 Description'
+          ..entry = DateTime(2024, 7, 20)
+          ..modified = DateTime(2024, 7, 21)
+          ..start = DateTime(2024, 7, 22)
+          ..due = DateTime(2024, 7, 23),
+      );
+
+      Draft draft = Draft(original);
+
+      draft.set('status', 'pending');
+
+      expect(draft.draft.status, 'pending');
+
+      expect(draft.draft.end, isNull);
+    });
+
+    test('Setting other properties updates correctly', () {
+      Task original = Task(
+        (b) => b
+          ..id = 1
+          ..description = 'Task 3'
+          ..status = 'pending'
+          ..start = DateTime.utc(2023, 1, 1)
+          ..priority = 'H'
+          ..project = 'Project A'
+          ..tags.replace(['tag1', 'tag2'])
+          ..uuid = 'uuid3'
+          ..description = 'Task 3 Description'
+          ..entry = DateTime(2024, 7, 20)
+          ..modified = DateTime(2024, 7, 21)
+          ..start = DateTime(2024, 7, 22)
+          ..due = DateTime(2024, 7, 23),
+      );
+
+      Draft draft = Draft(original);
+
+      draft.set('priority', 'L');
+
+      expect(draft.draft.priority, 'L');
+
+      expect(draft.draft.id, original.id);
+
+      expect(draft.draft.description, original.description);
+	  
+      expect(draft.draft.status, original.status);
+    });
+  });
+}