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Side by Side Diff: tests/lib_strong/async/zone_bind_callback_unary_test.dart

Issue 2959163002: Make Zone API strong mode clean. (Closed)
Patch Set: Created 3 years, 5 months ago
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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 4
5 import 'package:expect/expect.dart'; 5 import 'package:expect/expect.dart';
6 import 'package:async_helper/async_helper.dart'; 6 import 'package:async_helper/async_helper.dart';
7 import 'dart:async'; 7 import 'dart:async';
8 8
9 main() { 9 main() {
10 Completer done = new Completer(); 10 Completer done = new Completer();
11 11
12 var valueToCapture; 12 var valueToCapture;
13 var restoredValue; 13 var restoredValue;
14 14
15 Expect.identical(Zone.ROOT, Zone.current); 15 Expect.identical(Zone.ROOT, Zone.current);
16 Zone forked = Zone.current.fork(specification: new ZoneSpecification( 16 Zone forked = Zone.current.fork(specification: new ZoneSpecification(
17 registerUnaryCallback: 17 registerUnaryCallback:
18 (Zone self, ZoneDelegate parent, Zone origin, f(arg)) { 18 <R, T>(Zone self, ZoneDelegate parent, Zone origin, R f(T arg)) {
19 // The zone is still the same as when origin.run was invoked, which 19 // The zone is still the same as when origin.run was invoked, which
20 // is the root zone. (The origin zone hasn't been set yet). 20 // is the root zone. (The origin zone hasn't been set yet).
21 Expect.identical(Zone.current, Zone.ROOT); 21 Expect.identical(Zone.current, Zone.ROOT);
22 // Note that not forwarding is completely legal, though not encouraged. 22 // Note that not forwarding is completely legal, though not encouraged.
23 var capturedValue = valueToCapture; 23 var capturedValue = valueToCapture;
24 return parent.registerUnaryCallback(origin, (arg) { 24 return parent.registerUnaryCallback(origin, (arg) {
25 restoredValue = capturedValue; 25 restoredValue = capturedValue;
26 return f(arg); 26 return f(arg);
27 }); 27 });
28 })); 28 }));
29 29
30 valueToCapture = 499; 30 valueToCapture = 499;
31 var fun = (x) { 31 var fun = (x) {
32 Expect.identical(forked, Zone.current); 32 Expect.identical(forked, Zone.current);
33 return x + 99; 33 return x + 99;
34 }; 34 };
35 var bound = forked.bindUnaryCallback(fun, runGuarded: false); 35 var bound = forked.bindUnaryCallback(fun);
36 Expect.isFalse(identical(fun, bound)); 36 Expect.isFalse(identical(fun, bound));
37 37
38 // It is legal to invoke the callback in a different zone. This is, of course, 38 // It is legal to invoke the callback in a different zone. This is, of course,
39 // extremely discouraged. 39 // extremely discouraged.
40 var result = bound(399); 40 var result = bound(399);
41 Expect.equals(498, result); 41 Expect.equals(498, result);
42 Expect.equals(499, restoredValue); 42 Expect.equals(499, restoredValue);
43 } 43 }
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