dart-sdk/tests/language/sync_star/dcall_type_test.dart
Robert Nystrom 7e5fe50b24 Migrate language_2/sync_star to NNBD.
Change-Id: I184c984b65f15dabc647c510295c3dc82be3a203
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/151473
Auto-Submit: Bob Nystrom <rnystrom@google.com>
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Commit-Queue: Srujan Gaddam <srujzs@google.com>
Reviewed-by: Srujan Gaddam <srujzs@google.com>
2020-06-17 02:25:41 +00:00

28 lines
700 B
Dart

// 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.
// Test that TypeErrors happen for sync* methods without creating iterator.
import 'package:expect/expect.dart';
Iterable<int> iota(int n) sync* {
for (int i = 0; i < n; i++) yield i;
}
class C {
Iterable<int> add(int n) sync* {
yield n;
}
}
main() {
dynamic f = iota;
Expect.throwsTypeError(() => f('ten'));
Expect.throwsTypeError(() => f(4.7));
dynamic o = new C();
Expect.throwsTypeError(() => o.add('ten'));
Expect.throwsTypeError(() => o.add(4.7));
}