From 25bbd6dd914f5bf9ab4f7ae4a768f2ace3d46305 Mon Sep 17 00:00:00 2001
From: Kerry M-R <kamikkels@users.noreply.github.com>
Date: Fri, 3 Oct 2025 18:58:32 +0930
Subject: [PATCH] Test HashTable.Resize() directly

---
 DataStructures.Tests/Hashing/HashTableTests.cs | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/DataStructures.Tests/Hashing/HashTableTests.cs b/DataStructures.Tests/Hashing/HashTableTests.cs
index bc294bb7..4f2ba4a1 100644
--- a/DataStructures.Tests/Hashing/HashTableTests.cs
+++ b/DataStructures.Tests/Hashing/HashTableTests.cs
@@ -468,6 +468,21 @@ public void Resize_HandlesNegativeHashCodeCorrectly()
         Assert.That(hashTable[new NegativeHashKey(3)], Is.EqualTo("C"));
     }
 
+    [Test]
+    public void Resize_HandlesNegativeIndexCorrectly()
+    {
+        // Arrange
+        var hashTable = new HashTable<NegativeHashKey, string>(2);
+        var key = new NegativeHashKey(111);
+        hashTable.Add(key, "Value");
+
+        // Act
+        hashTable.Resize();
+
+        // Assert
+        Assert.That(hashTable[key], Is.EqualTo("Value"));
+    }
+
     [Test]
     public void Add_ShouldTriggerResize_WhenThresholdExceeded()
     {