blob: 3d943d849b1a3786724999d251edaa9e4a983483 [file] [log] [blame]
// Copyright (c) 2011, 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
// Test the Stream.single method.
library stream_single_test;
import 'dart:async';
import 'package:expect/expect.dart';
import 'package:async_helper/async_minitest.dart';
import 'event_helper.dart';
main() {
test("single", () {
StreamController c = new StreamController(sync: true);
Future f = c.stream.single;
f.then(expectAsync((v) {
Expect.equals(42, v);
}));
new Events.fromIterable([42]).replay(c);
});
test("single empty", () {
StreamController c = new StreamController(sync: true);
Future f = c.stream.single;
f.catchError(expectAsync((error) {
Expect.isTrue(error is StateError);
}));
new Events.fromIterable([]).replay(c);
});
test("single error", () {
StreamController c = new StreamController(sync: true);
Future f = c.stream.single;
f.catchError(expectAsync((error) {
Expect.equals("error", error);
}));
Events errorEvents = new Events()
..error("error")
..close();
errorEvents.replay(c);
});
test("single error 2", () {
StreamController c = new StreamController(sync: true);
Future f = c.stream.single;
f.catchError(expectAsync((error) {
Expect.equals("error", error);
}));
Events errorEvents = new Events()
..error("error")
..error("error2")
..close();
errorEvents.replay(c);
});
test("single error 3", () {
StreamController c = new StreamController(sync: true);
Future f = c.stream.single;
f.catchError(expectAsync((error) {
Expect.equals("error", error);
}));
Events errorEvents = new Events()
..add(499)
..error("error")
..close();
errorEvents.replay(c);
});
}