blob: 32cfa178b50489738d4b61469ba070aa2e715fe7 [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.
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 = [];
StreamController controller;
late Stream stream;
// Test that streams live in the zone they have been listened too.
// It doesn't matter how many zone-boundaries the stream traverses. What
// counts is the zone where `listen` was invoked.
catchErrors(() {
catchErrors(() {
controller = new StreamController();
// Assignment to "global" `stream`.
stream = controller.stream.map((x) {
events.add("map $x");
return x + 100;
}).asBroadcastStream();
// Consume stream in the nested zone.
stream.transform(
new StreamTransformer.fromHandlers(handleError: (e, st, sink) {
sink.add("error $e");
})).listen((x) {
events.add("stream $x");
});
// Feed the controller in the nested zone.
scheduleMicrotask(() {
controller.add(1);
controller.addError(2);
controller.close();
new Future.error("done");
});
})
.listen((x) {
events.add("listen: $x");
if (x == "done") done.complete(true);
})
.asFuture()
.then((_) {
Expect.fail("Unexpected callback");
});
// Listen to stream in outer zone.
stream.listen((x) {
events.add("stream2 $x");
});
}).listen((x) {
events.add("outer: $x");
}, onDone: () {
Expect.fail("Unexpected callback");
});
done.future.whenComplete(() {
// Give handlers time to run.
Timer.run(() {
Expect.listEquals([
"map 1",
"stream 101",
"stream2 101",
"stream error 2",
"listen: done",
"outer: 2",
], events);
asyncEnd();
});
});
}