blob: fe3bdce1a4765b11a9e8b3331a2fe455fc5760fb [file] [log] [blame]
// 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.
// @dart = 2.9
import 'package:async_helper/async_helper.dart';
import "package:expect/expect.dart";
import 'dart:async';
import 'catch_errors.dart';
main() {
asyncStart();
Completer done = new Completer();
var events = [];
var controller = new StreamController();
// Test that stream errors, as a result of bad user-code (`map`) are correctly
// caught by `catchErrors`. Note that the values are added outside both
// `catchErrors`, but since the `listen` happens in the most nested
// `catchErrors` it is caught there.
catchErrors(() {
catchErrors(() {
controller.stream.map((x) {
throw x;
}).listen((x) {
// Should not happen.
events.add("bad: $x");
});
}).listen((x) {
events.add("caught: $x");
if (x == 4) done.complete(true);
}, onDone: () {
Expect.fail("Unexpected callback");
});
}).listen((x) {
events.add("outer: $x");
}, onDone: () {
Expect.fail("Unexpected callback");
});
done.future.whenComplete(() {
// Give handlers time to run.
Timer.run(() {
Expect.listEquals([
"caught: 1",
"caught: 2",
"caught: 3",
"caught: 4",
], events);
asyncEnd();
});
});
[1, 2, 3, 4].forEach(controller.add);
controller.close();
}