Add simple test

osu.Game.Tests/Editor/TestSceneBlueprintContainer.cs

@@ -0,0 +1,20 @@
+// 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 NUnit.Framework;
+using osu.Game.Screens.Edit.Compose.Components;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Tests.Editor
+{
+    public class TestSceneBlueprintContainer : EditorClockTestScene
+    {
+        private BlueprintContainer blueprintContainer;
+
+        [SetUp]
+        public void Setup() => Schedule(() =>
+        {
+            Child = blueprintContainer = new BlueprintContainer();
+        });
+    }
+}