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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
#if HAS_AWAIT
using System;
using System.Collections.Generic;
using System.Reactive;
using System.Reactive.Concurrency;
using System.Reactive.Linq;
using System.Reactive.Subjects;
using Microsoft.Reactive.Testing;
#if NUNIT
using NUnit.Framework;
using TestClassAttribute = NUnit.Framework.TestFixtureAttribute;
using TestMethodAttribute = NUnit.Framework.TestAttribute;
using TestInitializeAttribute = NUnit.Framework.SetUpAttribute;
#else
using Microsoft.VisualStudio.TestTools.UnitTesting;
#endif
using ReactiveTests.Dummies;
namespace ReactiveTests.Tests
{
[TestClass]
public class ObservableAwaiterTest : ReactiveTest
{
[TestMethod]
public void Await_ArgumentChecking()
{
ReactiveAssert.Throws<ArgumentNullException>(() => Observable.GetAwaiter<int>(null));
ReactiveAssert.Throws<ArgumentNullException>(() => Observable.GetAwaiter(Observable.Empty<int>()).OnCompleted(null));
}
[TestMethod]
public void Await()
{
var scheduler = new TestScheduler();
var xs = scheduler.CreateHotObservable(
OnNext(20, -1),
OnNext(150, 0),
OnNext(220, 1),
OnNext(290, 2),
OnNext(340, 3),
OnCompleted<int>(410)
);
var awaiter = default(AsyncSubject<int>);
var result = default(int);
var t = long.MaxValue;
scheduler.ScheduleAbsolute(100, () => awaiter = xs.GetAwaiter());
scheduler.ScheduleAbsolute(200, () => awaiter.OnCompleted(() => { t = scheduler.Clock; result = awaiter.GetResult(); }));
scheduler.Start();
Assert.AreEqual(410, t);
Assert.AreEqual(3, result);
xs.Subscriptions.AssertEqual(
Subscribe(100)
);
}
[TestMethod]
public void Await_Error()
{
var scheduler = new TestScheduler();
var ex = new Exception();
var xs = scheduler.CreateHotObservable(
OnNext(20, -1),
OnNext(150, 0),
OnNext(220, 1),
OnNext(290, 2),
OnNext(340, 3),
OnError<int>(410, ex)
);
var awaiter = default(AsyncSubject<int>);
var t = long.MaxValue;
scheduler.ScheduleAbsolute(100, () => awaiter = xs.GetAwaiter());
scheduler.ScheduleAbsolute(200, () => awaiter.OnCompleted(() => { t = scheduler.Clock; ReactiveAssert.Throws(ex, () => awaiter.GetResult()); }));
scheduler.Start();
Assert.AreEqual(410, t);
xs.Subscriptions.AssertEqual(
Subscribe(100)
);
}
[TestMethod]
public void Await_Never()
{
var scheduler = new TestScheduler();
var xs = scheduler.CreateHotObservable(
OnNext(20, -1),
OnNext(150, 0),
OnNext(220, 1),
OnNext(290, 2),
OnNext(340, 3)
);
var awaiter = default(AsyncSubject<int>);
var hasValue = default(bool);
var t = long.MaxValue;
scheduler.ScheduleAbsolute(100, () => awaiter = xs.GetAwaiter());
scheduler.ScheduleAbsolute(200, () => awaiter.OnCompleted(() => { t = scheduler.Clock; awaiter.GetResult(); hasValue = true; }));
scheduler.Start();
Assert.AreEqual(long.MaxValue, t);
Assert.IsFalse(hasValue);
xs.Subscriptions.AssertEqual(
Subscribe(100)
);
}
[TestMethod]
public void Await_Empty()
{
var scheduler = new TestScheduler();
var xs = scheduler.CreateHotObservable(
OnCompleted<int>(300)
);
var awaiter = default(AsyncSubject<int>);
var t = long.MaxValue;
scheduler.ScheduleAbsolute(100, () => awaiter = xs.GetAwaiter());
scheduler.ScheduleAbsolute(200, () => awaiter.OnCompleted(() => { t = scheduler.Clock; ReactiveAssert.Throws<InvalidOperationException>(() => awaiter.GetResult()); }));
scheduler.Start();
Assert.AreEqual(300, t);
xs.Subscriptions.AssertEqual(
Subscribe(100)
);
}
}
}
#endif
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