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Side by Side Diff: tests/lib_strong/async/stack_trace18_test.dart

Issue 2802973005: Migrate async tests to strong (Closed)
Patch Set: Created 3 years, 8 months ago
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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
3 // BSD-style license that can be found in the LICENSE file.
4
5 import 'package:expect/expect.dart';
6 import 'package:async_helper/async_helper.dart';
7 import 'dart:async';
8
9 StackTrace captureStackTrace() {
10 try {
11 throw 0;
12 } catch (e, st) {
13 return st;
14 }
15 }
16
17 main() {
18 Completer completer = new Completer();
19 StackTrace trace = captureStackTrace();
20 asyncStart();
21 completer.future
22 .whenComplete(() => 499)
23 .then((_) { throw "should never be reached"; })
24 .then((_) { throw "Unreachable"; },
25 onError: (e, st) {
26 Expect.equals("c-error", e);
27 Expect.identical(trace, st);
28 // Test the rethrowing the same error keeps the stack trace.
29 throw e;
30 })
31 .then((_) { throw "Unreachable"; },
32 onError: (e, st) {
33 Expect.equals("c-error", e);
34 Expect.identical(trace, st);
35 asyncEnd();
36 });
37 completer.completeError("c-error", trace);
38 }
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