Paul Berry
7ea66d538b
Future<dynamic>.then<S>() requires its argument to have type `(dynamic) -> FutureOr<S>`. Change-Id: Ifef1ae85d0e59fa00648eb00e96fb0f752b4dbc4 Reviewed-on: https://dart-review.googlesource.com/19401 Reviewed-by: Ben Konyi <bkonyi@google.com> Commit-Queue: Paul Berry <paulberry@google.com>
106 lines
2.5 KiB
Dart
106 lines
2.5 KiB
Dart
// Copyright (c) 2014, 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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import 'dart:async';
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topLevelFunction() async {}
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Future<int> topLevelWithParameter(int a) async {
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return 7 + a;
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}
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topLevelWithParameterWrongType(int a) async {
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return 7 + a;
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}
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var what = 'async getter';
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Future<String> get topLevelGetter async {
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return 'I want to be an ${what}';
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}
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class A {
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static int staticVar = 1;
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static staticMethod(int param) async => staticVar + param;
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static get staticGetter async => staticVar + 3;
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int _x;
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A(this._x);
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operator +(A other) async {
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return new A(_x + other._x);
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}
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get value => _x;
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}
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class B {
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final _y;
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const B._internal(this._y);
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B() : _y = null;
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}
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main() {
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Future asyncReturn;
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asyncReturn = topLevelFunction();
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Expect.isTrue(asyncReturn is Future);
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asyncReturn = topLevelWithParameter(4);
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Expect.isTrue(asyncReturn is Future);
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asyncReturn.then((Object result) => Expect.equals(result, 11));
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asyncReturn = topLevelGetter;
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Expect.isTrue(asyncReturn is Future);
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asyncReturn.then((Object result) =>
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Expect.stringEquals(result, 'I want to be an async getter'));
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asyncReturn = A.staticMethod(2);
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Expect.isTrue(asyncReturn is Future);
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asyncReturn.then((Object result) => Expect.equals(result, 3));
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asyncReturn = A.staticGetter;
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Expect.isTrue(asyncReturn is Future);
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asyncReturn.then((Object result) => Expect.equals(result, 4));
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A a = new A(13);
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var b = new A(9);
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asyncReturn = a + b;
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Expect.isTrue(asyncReturn is Future);
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asyncReturn.then((Object result) => Expect.equals((result as A).value, 22));
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var foo = 17;
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bar(int p1, p2) async {
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var z = 8;
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return p2 + z + foo;
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}
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asyncReturn = bar(1, 2);
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Expect.isTrue(asyncReturn is Future);
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asyncReturn.then((Object result) => Expect.equals(result, 27));
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var moreNesting = (int shadowP1, String p2, num p3) {
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var z = 3;
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aa(int shadowP1) async {
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return foo + z + p3 + shadowP1;
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}
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return aa(6);
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};
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asyncReturn = moreNesting(1, "ignore", 2);
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Expect.isTrue(asyncReturn is Future);
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asyncReturn.then((Object result) => Expect.equals(result, 28));
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var checkAsync = (var someFunc) {
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var toTest = someFunc();
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Expect.isTrue(toTest is Future);
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toTest.then((int result) => Expect.equals(result, 4));
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};
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checkAsync(() async => 4);
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}
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