Cache StageDefinition for consumption (and remove ColumnType)

osu.Game.Rulesets.Mania.Tests/ManiaSpecialColumnTest.cs

@@ -0,0 +1,52 @@
+// 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.
+
+#nullable disable
+
+using System.Collections.Generic;
+using osu.Game.Rulesets.Mania.Beatmaps;
+using NUnit.Framework;
+
+namespace osu.Game.Rulesets.Mania.Tests
+{
+    [TestFixture]
+    public class ManiaSpecialColumnTest
+    {
+        [TestCase(new[]
+        {
+            true
+        }, 1)]
+        [TestCase(new[]
+        {
+            false,
+            false,
+            false,
+            false
+        }, 4)]
+        [TestCase(new[]
+        {
+            false,
+            false,
+            false,
+            true,
+            false,
+            false,
+            false
+        }, 7)]
+        public void Test(IEnumerable<bool> special, int columns)
+        {
+            var definition = new StageDefinition
+            {
+                Columns = columns
+            };
+            var results = getResults(definition);
+            Assert.AreEqual(special, results);
+        }
+
+        private IEnumerable<bool> getResults(StageDefinition definition)
+        {
+            for (int i = 0; i < definition.Columns; i++)
+                yield return definition.IsSpecialColumn(i);
+        }
+    }
+}