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osu-lazer/osu.Game.Tests/Database/GeneralUsageTests.cs

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// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
using System;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using NUnit.Framework;
using osu.Framework.Extensions;
using osu.Game.Beatmaps;
using osu.Game.Database;
using osu.Game.Tests.Resources;
namespace osu.Game.Tests.Database
{
[TestFixture]
public class GeneralUsageTests : RealmTest
{
/// <summary>
/// Just test the construction of a new database works.
/// </summary>
[Test]
public void TestConstructRealm()
{
RunTestWithRealm((realm, _) => { realm.Run(r => r.Refresh()); });
}
[Test]
public void TestBlockOperations()
{
RunTestWithRealm((realm, _) =>
{
using (realm.BlockAllOperations("testing"))
{
}
});
}
[Test]
public void TestAsyncWriteAsync()
{
RunTestWithRealmAsync(async (realm, _) =>
{
await realm.WriteAsync(r => r.Add(TestResources.CreateTestBeatmapSetInfo()));
realm.Run(r => r.Refresh());
Assert.That(realm.Run(r => r.All<BeatmapSetInfo>().Count()), Is.EqualTo(1));
});
}
[Test]
public void TestAsyncWriteWhileBlocking()
{
RunTestWithRealm((realm, _) =>
{
Task writeTask;
using (realm.BlockAllOperations("testing"))
{
writeTask = realm.WriteAsync(r => r.Add(TestResources.CreateTestBeatmapSetInfo()));
Thread.Sleep(100);
Assert.That(writeTask.IsCompleted, Is.False);
}
writeTask.WaitSafely();
realm.Run(r => r.Refresh());
Assert.That(realm.Run(r => r.All<BeatmapSetInfo>().Count()), Is.EqualTo(1));
});
}
[Test]
public void TestAsyncWrite()
{
RunTestWithRealm((realm, _) =>
{
realm.WriteAsync(r => r.Add(TestResources.CreateTestBeatmapSetInfo())).WaitSafely();
realm.Run(r => r.Refresh());
Assert.That(realm.Run(r => r.All<BeatmapSetInfo>().Count()), Is.EqualTo(1));
});
}
[Test]
public void TestAsyncWriteAfterDisposal()
{
RunTestWithRealm((realm, _) =>
{
realm.Dispose();
Assert.ThrowsAsync<ObjectDisposedException>(() => realm.WriteAsync(r => r.Add(TestResources.CreateTestBeatmapSetInfo())));
});
}
[Test]
public void TestAsyncWriteBeforeDisposal()
{
ManualResetEventSlim resetEvent = new ManualResetEventSlim();
RunTestWithRealm((realm, _) =>
{
var writeTask = realm.WriteAsync(r =>
{
// ensure that disposal blocks for our execution
Assert.That(resetEvent.Wait(100), Is.False);
r.Add(TestResources.CreateTestBeatmapSetInfo());
});
realm.Dispose();
resetEvent.Set();
writeTask.WaitSafely();
});
}
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/// <summary>
/// Test to ensure that a `CreateContext` call nested inside a subscription doesn't cause any deadlocks
/// due to context fetching semaphores.
/// </summary>
[Test]
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public void TestNestedContextCreationWithSubscription()
{
RunTestWithRealm((realm, _) =>
{
bool callbackRan = false;
realm.RegisterCustomSubscription(r =>
{
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var subscription = r.All<BeatmapInfo>().QueryAsyncWithNotifications((_, _) =>
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{
realm.Run(_ =>
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{
callbackRan = true;
});
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});
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// Force the callback above to run.
realm.Run(rr => rr.Refresh());
subscription?.Dispose();
return null;
});
Assert.IsTrue(callbackRan);
});
}
[Test]
public void TestBlockOperationsWithContention()
{
RunTestWithRealm((realm, _) =>
{
ManualResetEventSlim stopThreadedUsage = new ManualResetEventSlim();
ManualResetEventSlim hasThreadedUsage = new ManualResetEventSlim();
Task.Factory.StartNew(() =>
{
realm.Run(_ =>
{
hasThreadedUsage.Set();
stopThreadedUsage.Wait(60000);
});
}, TaskCreationOptions.LongRunning | TaskCreationOptions.HideScheduler);
hasThreadedUsage.Wait(60000);
Assert.Throws<TimeoutException>(() =>
{
using (realm.BlockAllOperations("testing"))
{
}
});
stopThreadedUsage.Set();
// Ensure we can block a second time after the usage has ended.
using (realm.BlockAllOperations("testing"))
{
}
});
}
}
}