dart-sdk/tests/lib/async/future_microtask_test.dart
Johnni Winther 4150349c7c [cfe] Handle throw in return type inference
Closes #41156

Change-Id: I6f5360ccf3f05c2f59de5db703d90431e0d61e7c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/141100
Commit-Queue: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
2020-03-27 15:59:27 +00:00

39 lines
858 B
Dart

// Copyright (c) 2013, 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.
import "package:expect/expect.dart";
import 'dart:async';
import 'package:async_helper/async_helper.dart';
main() {
asyncStart();
dynamic x = 499;
scheduleMicrotask(() {
Expect.equals(499, x);
x = 42;
});
new Future.microtask(() {
Expect.equals(42, x);
x = null;
return 99;
}).then((val) {
Expect.isNull(x);
Expect.equals(99, val);
x = "foo";
});
scheduleMicrotask(() {
Expect.equals("foo", x);
x = "toto";
asyncEnd();
});
asyncStart();
new Future<Null>.microtask(() {
throw "foo";
}).catchError((e, stackTrace) {
Expect.equals("foo", e);
asyncEnd();
});
}