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sdk/tests/lib/async/stack_trace18_test.dart
T
Robert Nystrom d3904f5a54 Reformat tests/lib/async/** using 3.8 style.
Change-Id: I6ccbe1494165c2bda142ece13584c4738e3b43e6
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/425347
Commit-Queue: Lasse Nielsen <lrn@google.com>
Reviewed-by: Lasse Nielsen <lrn@google.com>
Auto-Submit: Bob Nystrom <rnystrom@google.com>
2025-05-02 04:08:54 -07:00

49 lines
1.2 KiB
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/async_helper.dart';
import 'package:expect/expect.dart';
import 'dart:async';
StackTrace captureStackTrace() {
try {
throw 0;
} catch (e, st) {
return st;
}
}
main() {
Completer completer = new Completer();
StackTrace trace = captureStackTrace();
asyncStart();
completer.future
.whenComplete(() => 499)
.then<Null>((_) {
throw "should never be reached";
})
.then<Null>(
(_) {
throw "Unreachable";
},
onError: (e, st) {
Expect.equals("c-error", e);
Expect.identical(trace, st);
// Test the rethrowing the same error keeps the stack trace.
throw e;
},
)
.then<Null>(
(_) {
throw "Unreachable";
},
onError: (e, st) {
Expect.equals("c-error", e);
Expect.identical(trace, st);
asyncEnd();
},
);
completer.completeError("c-error", trace);
}