lib/models/task.dart

@@ -38,12 +38,10 @@ class Task {
         text = inp['text'],
         description = inp['description'],
         done = inp['done'],
-        reminderDates = inp['reminderDates'] == null
-            ? null
-            : (inp['reminderDates'] as List<dynamic>)
-                .map((ts) => dateTimeFromUnixTimestamp(ts))
-                .cast<DateTime>()
-                .toList(),
+        reminderDates = (inp['reminderDates'] as List<dynamic>)
+                ?.map((ts) => dateTimeFromUnixTimestamp(ts))
+                ?.cast<DateTime>()
+                ?.toList(),
         dueDate = dateTimeFromUnixTimestamp(inp['dueDate']),
         startDate = dateTimeFromUnixTimestamp(inp['startDate']),
         endDate = dateTimeFromUnixTimestamp(inp['endDate']),

test/task_json_decode_test.dart

@@ -28,4 +28,25 @@ void main() {
     expect(task.created, DateTime.fromMillisecondsSinceEpoch(1542465818 * 1000));
     expect(task.updated, DateTime.fromMillisecondsSinceEpoch(1552771527 * 1000));
   });
+  test('Check encoding with reminder dates as null', () {
+    final String json = '{"id": 1,"text": "test","description": "Lorem Ipsum","done": true,"dueDate": 1543834800,"reminderDates": null,"repeatAfter": 3600,"parentTaskID": 0,"priority": 100,"startDate": 1543834800,"endDate": 1543835000,"assignees": null,"labels": null,"subtasks": null,"created": 1542465818,"updated": 1552771527,"createdBy": {"id": 4,"username": "konrad","email": "vikunjatry@kolaente.de","created": 1537855131,"updated": 1545233325}}';
+    final JsonDecoder _decoder = new JsonDecoder();
+    final task = Task.fromJson(_decoder.convert(json));
+
+    expect(task.id, 1);
+    expect(task.text, 'test');
+    expect(task.description, 'Lorem Ipsum');
+    expect(task.done, true);
+    expect(task.reminderDates, null);
+    expect(task.dueDate, DateTime.fromMillisecondsSinceEpoch(1543834800 * 1000));
+    expect(task.repeatAfter, Duration(seconds: 3600));
+    expect(task.parentTaskID, 0);
+    expect(task.priority, 100);
+    expect(task.startDate, DateTime.fromMillisecondsSinceEpoch(1543834800 * 1000));
+    expect(task.endDate, DateTime.fromMillisecondsSinceEpoch(1543835000 * 1000));
+    expect(task.labels, null);
+    expect(task.subtasks, null);
+    expect(task.created, DateTime.fromMillisecondsSinceEpoch(1542465818 * 1000));
+    expect(task.updated, DateTime.fromMillisecondsSinceEpoch(1552771527 * 1000));
+  });
 }