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912005267d
Change-Id: I46be49b2effec3e38a3dc44cd45cfe736f77fa78 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/182680 Commit-Queue: Sigmund Cherem <sigmund@google.com> Reviewed-by: Joshua Litt <joshualitt@google.com> Reviewed-by: Nicholas Shahan <nshahan@google.com> Reviewed-by: Stephen Adams <sra@google.com>
47 lines
1.5 KiB
Dart
47 lines
1.5 KiB
Dart
// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'package:expect/expect.dart';
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// Regression test for badly named generator body.
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Future<void> goo(Future Function() f) async {
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Expect.equals(102, (await f()).keys.single);
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Expect.equals(104, (await f()).keys.single);
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}
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Future<T> identity<T>(T x) async => x;
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extension Gloop<T> on Map<T, List<T>> {
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// An async method using a 'complex' generator type `Map<T, List<T>>`. This
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// requires a separated entry and body, which requires a name, and the name
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// must be legal JavaScript.
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Future<Map<T, List<T>>> foo(int x) async {
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var result = await identity({(x += this.length) as T: <T>[]});
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return result;
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}
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Future<int> bar(int x) async {
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// An async closure using a 'complex' generator type `Map<T, Set<T>>`. This
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// requires a separated entry and body, which requires a name, and the name
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// must be legal JavaScript.
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await goo(() async => {(x += this.length) as T: <T>{}});
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return x;
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}
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}
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main() async {
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// Test method.
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Map<int, List<int>> o1 = {1: [], 2: []};
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var o2 = await o1.foo(100);
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var o3 = await o2.foo(100);
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Expect.equals('{102: []}', '$o2');
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Expect.equals('{101: []}', '$o3');
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// Test closure.
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Map<int, List<int>> o = {1: [], 2: []};
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int x = await o.bar(100);
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Expect.equals(104, x);
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}
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