Add too short audio files check and tests

osu.Game.Tests/Editing/Checks/CheckTooShortAudioFilesTest.cs

@@ -0,0 +1,117 @@
+// 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.Collections.Generic;
+using System.IO;
+using System.Linq;
+using ManagedBass;
+using Moq;
+using NUnit.Framework;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Edit.Checks;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Tests.Beatmaps;
+using osu.Game.Tests.Resources;
+using osuTK.Audio;
+using FileInfo = osu.Game.IO.FileInfo;
+
+namespace osu.Game.Tests.Editing.Checks
+{
+    [TestFixture]
+    public class CheckTooShortAudioFilesTest
+    {
+        private CheckTooShortAudioFiles check;
+        private IBeatmap beatmap;
+
+        [SetUp]
+        public void Setup()
+        {
+            check = new CheckTooShortAudioFiles();
+            beatmap = new Beatmap<HitObject>
+            {
+                BeatmapInfo = new BeatmapInfo
+                {
+                    BeatmapSet = new BeatmapSetInfo
+                    {
+                        Files = new List<BeatmapSetFileInfo>(new[]
+                        {
+                            new BeatmapSetFileInfo
+                            {
+                                Filename = "abc123.wav",
+                                FileInfo = new FileInfo { Hash = "abcdef" }
+                            }
+                        })
+                    }
+                }
+            };
+
+            // 0 = No output device. This still allows decoding.
+            if (!Bass.Init(0) && Bass.LastError != Errors.Already)
+                throw new AudioException("Could not initialize Bass.");
+        }
+
+        [Test]
+        public void TestDifferentExtension()
+        {
+            beatmap.BeatmapInfo.BeatmapSet.Files.Clear();
+            beatmap.BeatmapInfo.BeatmapSet.Files.Add(new BeatmapSetFileInfo
+            {
+                Filename = "abc123.jpg",
+                FileInfo = new FileInfo { Hash = "abcdef" }
+            });
+
+            // Should fail to load, but not produce an error due to the extension not being expected to load.
+            Assert.IsEmpty(check.Run(getContext(null, allowMissing: true)));
+        }
+
+        [Test]
+        public void TestRegularAudioFile()
+        {
+            Assert.IsEmpty(check.Run(getContext("Samples/test-sample.mp3")));
+        }
+
+        [Test]
+        public void TestBlankAudioFile()
+        {
+            // This is a 0 ms duration audio file, commonly used to silence sliderslides/ticks, and so should be fine.
+            Assert.IsEmpty(check.Run(getContext("Samples/blank.wav")));
+        }
+
+        [Test]
+        public void TestTooShortAudioFile()
+        {
+            var issues = check.Run(getContext("Samples/test-sample-cut.mp3")).ToList();
+
+            Assert.That(issues, Has.Count.EqualTo(1));
+            Assert.That(issues.Single().Template is CheckTooShortAudioFiles.IssueTemplateTooShort);
+        }
+
+        [Test]
+        public void TestMissingAudioFile()
+        {
+            Assert.IsEmpty(check.Run(getContext("Samples/missing.mp3", allowMissing: true)));
+        }
+
+        [Test]
+        public void TestCorruptAudioFile()
+        {
+            var issues = check.Run(getContext("Samples/corrupt.wav")).ToList();
+
+            Assert.That(issues, Has.Count.EqualTo(1));
+            Assert.That(issues.Single().Template is CheckTooShortAudioFiles.IssueTemplateBadFormat);
+        }
+
+        private BeatmapVerifierContext getContext(string resourceName, bool allowMissing = false)
+        {
+            Stream resourceStream = string.IsNullOrEmpty(resourceName) ? null : TestResources.OpenResource(resourceName);
+            if (!allowMissing && resourceStream == null)
+                throw new FileNotFoundException($"The requested test resource \"{resourceName}\" does not exist.");
+
+            var mockWorkingBeatmap = new Mock<TestWorkingBeatmap>(beatmap, null, null);
+            mockWorkingBeatmap.Setup(w => w.GetStream(It.IsAny<string>())).Returns(resourceStream);
+
+            return new BeatmapVerifierContext(beatmap, mockWorkingBeatmap.Object);
+        }
+    }
+}