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107 lines
3.0 KiB
C#
107 lines
3.0 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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using System;
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using System.Threading;
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using System.Threading.Tasks;
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using NUnit.Framework;
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using osu.Game.Beatmaps;
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using osu.Game.Database;
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#nullable enable
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namespace osu.Game.Tests.Database
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{
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[TestFixture]
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public class GeneralUsageTests : RealmTest
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{
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/// <summary>
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/// Just test the construction of a new database works.
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/// </summary>
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[Test]
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public void TestConstructRealm()
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{
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RunTestWithRealm((realm, _) => { realm.Run(r => r.Refresh()); });
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}
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[Test]
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public void TestBlockOperations()
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{
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RunTestWithRealm((realm, _) =>
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{
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using (realm.BlockAllOperations())
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{
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}
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});
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}
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/// <summary>
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/// Test to ensure that a `CreateContext` call nested inside a subscription doesn't cause any deadlocks
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/// due to context fetching semaphores.
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/// </summary>
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[Test]
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public void TestNestedContextCreationWithSubscription()
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{
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RunTestWithRealm((realm, _) =>
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{
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bool callbackRan = false;
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realm.RegisterCustomSubscription(r =>
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{
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var subscription = r.All<BeatmapInfo>().QueryAsyncWithNotifications((sender, changes, error) =>
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{
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realm.Run(_ =>
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{
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callbackRan = true;
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});
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});
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// Force the callback above to run.
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realm.Run(rr => rr.Refresh());
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subscription?.Dispose();
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return null;
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});
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Assert.IsTrue(callbackRan);
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});
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}
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[Test]
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public void TestBlockOperationsWithContention()
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{
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RunTestWithRealm((realm, _) =>
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{
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ManualResetEventSlim stopThreadedUsage = new ManualResetEventSlim();
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ManualResetEventSlim hasThreadedUsage = new ManualResetEventSlim();
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Task.Factory.StartNew(() =>
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{
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realm.Run(_ =>
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{
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hasThreadedUsage.Set();
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stopThreadedUsage.Wait();
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});
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}, TaskCreationOptions.LongRunning | TaskCreationOptions.HideScheduler);
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hasThreadedUsage.Wait();
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Assert.Throws<TimeoutException>(() =>
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{
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using (realm.BlockAllOperations())
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{
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}
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});
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stopThreadedUsage.Set();
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// Ensure we can block a second time after the usage has ended.
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using (realm.BlockAllOperations())
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{
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}
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});
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}
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}
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}
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