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// Copyright (c) 2014, 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';
/// StreamController in nested runZoned. Trivial.
test1() {
var events = [];
var done = new Completer();
runZonedGuarded(() {
runZonedGuarded(() {
var c = new StreamController();
c.stream.listen((x) => events.add("stream: $x"),
onError: (x) => events.add("stream: error $x"),
onDone: done.complete);
c.add(1);
c.addError(2);
c.close();
}, (e, s) => events.add("rza: error $e"));
}, (e, s) => events.add("rzb: error $e"));
return [
done.future,
() {
Expect.listEquals(["stream: 1", "stream: error 2"], events);
}
];
}
/// Adding errors to the stream controller from an outside zone.
test2() {
var events = [];
var done = new Completer();
runZonedGuarded(() {
var c;
runZonedGuarded(() {
c = new StreamController();
c.stream.listen((x) => events.add("stream: $x"),
onError: (x) => events.add("stream: error $x"),
onDone: done.complete);
}, (e, s) => events.add("rza: error $e"));
c.add(1);
c.addError(2);
c.close();
}, (e, s) => events.add("rzb: error $e"));
return [
done.future,
() {
Expect.listEquals(["stream: 1", "stream: error 2"], events);
}
];
}
/// Adding errors to the stream controller from a more nested zone.
test3() {
var events = [];
var done = new Completer();
runZonedGuarded(() {
var c = new StreamController();
c.stream.listen((x) => events.add("stream: $x"),
onError: (x) => events.add("stream: error $x"), onDone: done.complete);
runZonedGuarded(() {
c.add(1);
c.addError(2);
c.close();
}, (e, s) => events.add("rza: error $e"));
}, (e, s) => events.add("rzb: error $e"));
return [
done.future,
() {
Expect.listEquals(["stream: 1", "stream: error 2"], events);
}
];
}
/// Feeding a stream from a different zone into another controller.
test4() {
var events = [];
var done = new Completer();
runZonedGuarded(() {
var c = new StreamController();
c.stream.listen((x) => events.add("stream: $x"),
onError: (x) => events.add("stream: error $x"), onDone: done.complete);
runZonedGuarded(() {
var c2 = new StreamController();
c.addStream(c2.stream).whenComplete(c.close);
c2.add(1);
c2.addError(2);
c2.close();
}, (e, s) => events.add("rza: error $e"));
}, (e, s) => events.add("rzb: error $e"));
return [
done.future,
() {
Expect.listEquals(["stream: 1", "stream: error 2"], events);
}
];
}
/// Feeding a stream from a different zone into another controller.
/// This time nesting is reversed wrt test4.
test5() {
var events = [];
var done = new Completer();
runZonedGuarded(() {
var c;
runZonedGuarded(() {
c = new StreamController();
c.stream.listen((x) => events.add("stream: $x"),
onError: (x) => events.add("stream: error $x"),
onDone: done.complete);
}, (e, s) => events.add("rza: error $e"));
var c2 = new StreamController();
c.addStream(c2.stream).whenComplete(c.close);
c2.add(1);
c2.addError(2);
c2.close();
}, (e, s) => events.add("rzb: error $e"));
return [
done.future,
() {
Expect.listEquals(["stream: 1", "stream: error 2"], events);
}
];
}
test6() {
var events = [];
var done = new Completer();
var c;
runZonedGuarded(() {
c = new StreamController();
c.stream.listen((x) => events.add("stream: $x"),
onError: (x) => events.add("stream: error $x"), onDone: done.complete);
}, (e, s) => events.add("rza: error $e"));
runZonedGuarded(() {
var c2 = new StreamController();
c.addStream(c2.stream).whenComplete(c.close);
c2.add(1);
c2.addError(2);
c2.close();
}, (e, s) => events.add("rzb: error $e"));
return [
done.future,
() {
Expect.listEquals(["stream: 1", "stream: error 2"], events);
}
];
}
/// Adding errors to the stream controller from a parallel zone.
test7() {
var events = [];
var done = new Completer();
var c;
runZonedGuarded(() {
c = new StreamController();
c.stream.listen((x) => events.add("stream: $x"),
onError: (x) => events.add("stream: error $x"), onDone: done.complete);
}, (e, s) => events.add("rza: error $e"));
runZonedGuarded(() {
c.add(1);
c.addError(2);
c.close();
}, (e, s) => events.add("rzb: error $e"));
return [
done.future,
() {
Expect.listEquals(["stream: 1", "stream: error 2"], events);
}
];
}
main() {
asyncStart();
var tests = [
test1(),
test2(),
test3(),
test4(),
test5(),
test6(),
test7(),
];
Future.wait(tests.map((l) => l.first as Future)).then((_) {
// Give time to complete all pending actions.
Timer.run(() {
tests.forEach((l) => (l.last)());
asyncEnd();
});
});
}