Added tests for video backgrounds

osu.Game.Tests/Beatmaps/Formats/LegacyBeatmapDecoderTest.cs

@@ -21,6 +21,7 @@
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.Osu.Beatmaps;
 using osu.Game.Skinning;
+using osu.Game.Storyboards;
 using osu.Game.Tests.Resources;
 using osuTK;
 using osuTK.Graphics;
@@ -160,6 +161,36 @@ public void TestDecodeBeatmapEvents()
             }
         }
 
+        [Test]
+        public void TestDecodeVideoWithLowercaseExtension()
+        {
+            var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
+
+            using (var resStream = TestResources.OpenResource("video-with-lowercase-extension.osb"))
+            using (var stream = new LineBufferedReader(resStream))
+            {
+                var beatmap = decoder.Decode(stream);
+                var metadata = beatmap.Metadata;
+
+                Assert.AreEqual("BG.jpg", metadata.BackgroundFile);
+            }
+        }
+
+        [Test]
+        public void TestDecodeVideoWithUppercaseExtension()
+        {
+            var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
+
+            using (var resStream = TestResources.OpenResource("video-with-uppercase-extension.osb"))
+            using (var stream = new LineBufferedReader(resStream))
+            {
+                var beatmap = decoder.Decode(stream);
+                var metadata = beatmap.Metadata;
+
+                Assert.AreEqual("BG.jpg", metadata.BackgroundFile);
+            }
+        }
+
         [Test]
         public void TestDecodeImageSpecifiedAsVideo()
         {

osu.Game.Tests/Beatmaps/Formats/LegacyStoryboardDecoderTest.cs

@@ -169,6 +169,40 @@ public void TestDecodeVariableWithSuffix()
             }
         }
 
+        [Test]
+        public void TestDecodeVideoWithLowercaseExtension()
+        {
+            var decoder = new LegacyStoryboardDecoder();
+
+            using (var resStream = TestResources.OpenResource("video-with-lowercase-extension.osb"))
+            using (var stream = new LineBufferedReader(resStream))
+            {
+                var storyboard = decoder.Decode(stream);
+
+                StoryboardLayer video = storyboard.Layers.Single(l => l.Name == "Video");
+                Assert.That(video.Elements.Count, Is.EqualTo(1));
+
+                Assert.AreEqual("Video.avi", ((StoryboardVideo)video.Elements[0]).Path);
+            }
+        }
+
+        [Test]
+        public void TestDecodeVideoWithUppercaseExtension()
+        {
+            var decoder = new LegacyStoryboardDecoder();
+
+            using (var resStream = TestResources.OpenResource("video-with-uppercase-extension.osb"))
+            using (var stream = new LineBufferedReader(resStream))
+            {
+                var storyboard = decoder.Decode(stream);
+
+                StoryboardLayer video = storyboard.Layers.Single(l => l.Name == "Video");
+                Assert.That(video.Elements.Count, Is.EqualTo(1));
+
+                Assert.AreEqual("Video.AVI", ((StoryboardVideo)video.Elements[0]).Path);
+            }
+        }
+
         [Test]
         public void TestDecodeImageSpecifiedAsVideo()
         {
@@ -179,8 +213,8 @@ public void TestDecodeImageSpecifiedAsVideo()
             {
                 var storyboard = decoder.Decode(stream);
 
-                StoryboardLayer foreground = storyboard.Layers.Single(l => l.Name == "Video");
-                Assert.That(foreground.Elements.Count, Is.Zero);
+                StoryboardLayer video = storyboard.Layers.Single(l => l.Name == "Video");
+                Assert.That(video.Elements.Count, Is.Zero);
             }
         }
 

osu.Game.Tests/Resources/video-with-lowercase-extension.osb

@@ -0,0 +1,5 @@
+osu file format v14
+
+[Events]
+0,0,"BG.jpg",0,0
+Video,0,"Video.avi",0,0

osu.Game.Tests/Resources/video-with-uppercase-extension.osb

@@ -0,0 +1,5 @@
+osu file format v14
+
+[Events]
+0,0,"BG.jpg",0,0
+Video,0,"Video.AVI",0,0