blob: cb050f79b725b801d0ae475d7cb3aeb68d1656ba [file] [log] [blame]
// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// @dart = 2.9
// Test that TypeErrors happen for async methods without using returned Future.
import 'dart:async';
import 'package:expect/expect.dart';
class D<T> {
// Parametric covariance check is usually compiled into method.
Future<T> add(T n) async {
return n;
main() async {
D<num> d = new D<int>();
Expect.throwsTypeError(() => d.add(4.6));