Add test case(without checking result.)

osu.Game.Rulesets.Karaoke.Tests/Beatmaps/TestSceneBeatmapInfoWedge.cs

@@ -0,0 +1,72 @@
+// Copyright (c) andy840119 <[email protected]>. Licensed under the GPL Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using NUnit.Framework;
+using osu.Framework.Graphics;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.Formats;
+using osu.Game.IO;
+using osu.Game.Rulesets.Karaoke.Tests.Resources;
+using osu.Game.Screens.Select;
+using osu.Game.Tests.Visual;
+using osuTK;
+
+namespace osu.Game.Rulesets.Karaoke.Tests.Beatmaps
+{
+    [TestFixture]
+    public class TestSceneBeatmapInfoWedge : OsuTestScene
+    {
+        private TestBeatmapInfoWedge infoWedge;
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            Add(infoWedge = new TestBeatmapInfoWedge
+            {
+                Size = new Vector2(0.5f, 245),
+                RelativeSizeAxes = Axes.X,
+                Margin = new MarginPadding { Top = 20 }
+            });
+
+            AddStep("show", () =>
+            {
+                infoWedge.Show();
+                infoWedge.Beatmap = Beatmap.Value;
+            });
+        }
+
+        [TestCase("karaoke-file-samples")]
+        [TestCase("karaoke-file-samples-without-note")]
+        [TestCase("karaoke-note-samples")]
+        [TestCase("karaoke-style-samples")]
+        [TestCase("karaoke-translate-samples")]
+        public void TestNullBeatmap(string fileName)
+        {
+            using (var resStream = TestResources.OpenBeatmapResource(fileName))
+            using (var stream = new LineBufferedReader(resStream))
+            {
+                var decoder = Decoder.GetDecoder<Beatmap>(stream);
+                var beatmap = decoder.Decode(stream);
+                selectBeatmap(beatmap, fileName);
+            }  
+        }
+
+        private void selectBeatmap(IBeatmap b, string fileName)
+        {
+            BeatmapInfoWedge.BufferedWedgeInfo infoBefore = null;
+
+            AddStep($"select {b?.Metadata.Title ?? fileName} beatmap", () =>
+            {
+                infoBefore = infoWedge.Info;
+                infoWedge.Beatmap = Beatmap.Value = b == null ? Beatmap.Default : CreateWorkingBeatmap(b);
+            });
+
+            AddUntilStep("wait for async load", () => infoWedge.Info != infoBefore);
+        }
+
+        private class TestBeatmapInfoWedge : BeatmapInfoWedge
+        {
+            public new BufferedWedgeInfo Info => base.Info;
+        }
+    }
+}