null_list_exception.dart

import 'package:dart_json_mapper/dart_json_mapper.dart';
import 'main.mapper.g.dart';

@jsonSerializable
class Car {
  String model;
  int? miles;
  List<String>? passengers;

  Car(this.model, this.miles, this.passengers);

  @override
  String toString() {
    return 'Car{model: $model, miles: $miles, passengers: $passengers}';
  }
}

void main() {
  initializeJsonMapper();

  // All Values
  var json = JsonMapper.serialize(Car("tesla", 1000, ["Tom", "Anna"]));
  print(json);
  print(JsonMapper.deserialize<Car>(json)); // OK

  // Null Int
  var json2 = JsonMapper.serialize(Car("tesla", null, ["Tom", "Anna"]));
  print(json2);
  print(JsonMapper.deserialize<Car>(json2)); // OK

  // Null List
  var json3 = JsonMapper.serialize(Car("tesla", 1000, null));
  print(json3);
  print(JsonMapper.deserialize<Car>(json3)); // FAILS
}