Add SparseSet Test

Misaki.HighPerformance.Test/UnitTest/Collections/TestSparseSet.cs

@@ -0,0 +1,52 @@
+using Misaki.HighPerformance.Collections;
+
+namespace Misaki.HighPerformance.Test.UnitTest.Collections;
+
+[TestClass]
+public class TestSparseSet
+{
+    private SparseSet<int> _sparseSet = null!;
+
+    [TestInitialize]
+    public void Initialize()
+    {
+        _sparseSet = new SparseSet<int>(16);
+    }
+
+    [TestMethod]
+    public void InvalidID()
+    {
+        Assert.IsFalse(_sparseSet.Contains(0, 0));
+    }
+
+    [TestMethod]
+    public void Add()
+    {
+        var id = _sparseSet.Add(10, out var gen);
+        Assert.IsTrue(_sparseSet.Contains(id, gen));
+    }
+
+    [TestMethod]
+    public void Remove()
+    {
+        var id = _sparseSet.Add(20, out var gen);
+        Assert.IsTrue(_sparseSet.Contains(id, gen));
+
+        _sparseSet.Remove(id, gen);
+        Assert.IsFalse(_sparseSet.Contains(id, gen));
+    }
+
+    [TestMethod]
+    public void IndexReuse()
+    {
+        var id = _sparseSet.Add(20, out var gen);
+        Assert.IsTrue(_sparseSet.Contains(id, gen));
+
+        _sparseSet.Remove(id, gen);
+        Assert.IsFalse(_sparseSet.Contains(id, gen));
+
+        var newId = _sparseSet.Add(30, out var newGen);
+        Assert.AreEqual(id, newId);
+        Assert.AreNotEqual(gen, newGen);
+    }
+}