diff --git a/Bigfoot/Sources/Utils/Include/Utils/Containers/SlotMap.hpp b/Bigfoot/Sources/Utils/Include/Utils/Containers/SlotMap.hpp
index 3f182f0..3ce2cfe 100644
--- a/Bigfoot/Sources/Utils/Include/Utils/Containers/SlotMap.hpp
+++ b/Bigfoot/Sources/Utils/Include/Utils/Containers/SlotMap.hpp
@@ -94,7 +94,7 @@ class SlotMapBase
     }
 
     [[nodiscard]]
-    std::size_t GetSize() const
+    std::size_t Size() const
     {
         return m_size;
     }
diff --git a/Bigfoot/Tests/Utils/Containers/SlotMap.cpp b/Bigfoot/Tests/Utils/Containers/SlotMap.cpp
index e69de29..82ec1ac 100644
--- a/Bigfoot/Tests/Utils/Containers/SlotMap.cpp
+++ b/Bigfoot/Tests/Utils/Containers/SlotMap.cpp
@@ -0,0 +1,150 @@
+/*********************************************************************
+ * \file   SlotMap.cpp
+ *
+ * \author Romain BOULLARD
+ * \date   August 2026
+ *********************************************************************/
+#include <Utils/Containers/SlotMap.hpp>
+
+#include <gtest/gtest.h>
+
+namespace Bigfoot
+{
+class SlotMapKeyFixture: public ::testing::Test
+{
+  protected:
+};
+
+/****************************************************************************************/
+
+TEST_F(SlotMapKeyFixture, INVALID_VERSION_IsZero)
+{
+    EXPECT_EQ(SlotMapKey::INVALID_VERSION, 0);
+}
+
+/****************************************************************************************/
+
+TEST_F(SlotMapKeyFixture, MAX_INDEX_IsMaxU32)
+{
+    EXPECT_EQ(SlotMapKey::MAX_INDEX, std::numeric_limits<std::uint32_t>::max());
+}
+
+/****************************************************************************************/
+
+TEST_F(SlotMapKeyFixture, Valid_ShouldReturnFalseIfVersionIsInvalid)
+{
+    EXPECT_FALSE(SlotMapKey().Valid());
+    EXPECT_FALSE(SlotMapKey(0, 0).Valid());
+    EXPECT_FALSE(SlotMapKey(SlotMapKey::INVALID_VERSION, 0).Valid());
+    EXPECT_FALSE(SlotMapKey(0, 42).Valid());
+    EXPECT_FALSE(SlotMapKey(SlotMapKey::INVALID_VERSION, 42).Valid());
+}
+
+/****************************************************************************************/
+
+TEST_F(SlotMapKeyFixture, Valid_ShouldReturnTrueIfVersionisNotInvalid)
+{
+    EXPECT_TRUE(SlotMapKey(1, 0).Valid());
+    EXPECT_TRUE(SlotMapKey(1, 42).Valid());
+}
+
+/****************************************************************************************/
+
+TEST_F(SlotMapKeyFixture, GetVersion_ShouldReturnTheVersion)
+{
+    EXPECT_EQ(SlotMapKey(0, 0).GetVersion(), 0);
+    EXPECT_EQ(SlotMapKey(42, 69).GetVersion(), 42);
+}
+
+/****************************************************************************************/
+
+TEST_F(SlotMapKeyFixture, GetIndex_ShouldReturnTheIndex)
+{
+    EXPECT_EQ(SlotMapKey(0, 0).GetIndex(), 0);
+    EXPECT_EQ(SlotMapKey(42, 69).GetIndex(), 69);
+}
+
+/****************************************************************************************/
+
+template<class SLOTMAP>
+class SlotMapFixture: public ::testing::Test
+{
+  protected:
+    SLOTMAP m_slotMap;
+};
+
+class SlotMapNameGenerator
+{
+  public:
+    template<typename T>
+    static std::string GetName(int)
+    {
+        if constexpr (std::is_same_v<T, DenseSlotMap<std::uint32_t>>)
+        {
+            return "DenseSlotMap";
+        }
+        if constexpr (std::is_same_v<T, StableSlotMap<std::uint32_t>>)
+        {
+            return "StableSlotMap";
+        }
+    }
+};
+
+using SlotMapTypes = ::testing::Types<DenseSlotMap<std::uint32_t>, StableSlotMap<std::uint32_t>>;
+TYPED_TEST_SUITE(SlotMapFixture, SlotMapTypes, SlotMapNameGenerator);
+
+/****************************************************************************************/
+
+TYPED_TEST(SlotMapFixture, Has_ReturnTrueIfSlotMapHasTheKey)
+{
+    const SlotMapKey key = this->m_slotMap.Insert(42);
+    EXPECT_TRUE(this->m_slotMap.Has(key));
+}
+
+/****************************************************************************************/
+
+TYPED_TEST(SlotMapFixture, Has_ReturnFalseIfSlotMapDoesNotHaveTheKey)
+{
+    std::ignore = this->m_slotMap.Insert(42);
+    EXPECT_FALSE(this->m_slotMap.Has(SlotMapKey {1, 23}));
+}
+
+/****************************************************************************************/
+
+TYPED_TEST(SlotMapFixture, Size_ShouldReturnTheSizeOfTheSlotMap)
+{
+    EXPECT_EQ(this->m_slotMap.Size(), 0);
+    const SlotMapKey key1 = this->m_slotMap.Insert(42);
+    const SlotMapKey key2 = this->m_slotMap.Insert(69);
+    EXPECT_EQ(this->m_slotMap.Size(), 2);
+    this->m_slotMap.Remove(key1);
+    EXPECT_EQ(this->m_slotMap.Size(), 1);
+    this->m_slotMap.Remove(key2);
+    EXPECT_EQ(this->m_slotMap.Size(), 0);
+}
+
+/****************************************************************************************/
+
+TYPED_TEST(SlotMapFixture, Empty_ShouldReturnTrueIfTheSlotMapIsEmpty)
+{
+    EXPECT_TRUE(this->m_slotMap.Empty());
+    const SlotMapKey key1 = this->m_slotMap.Insert(42);
+    const SlotMapKey key2 = this->m_slotMap.Insert(69);
+    this->m_slotMap.Remove(key1);
+    this->m_slotMap.Remove(key2);
+    EXPECT_TRUE(this->m_slotMap.Empty());
+}
+
+/****************************************************************************************/
+
+TYPED_TEST(SlotMapFixture, Empty_ShouldReturnFalseIfTheSlotMapIsNotEmpty)
+{
+    const SlotMapKey key1 = this->m_slotMap.Insert(42);
+    EXPECT_FALSE(this->m_slotMap.Empty());
+    const SlotMapKey key2 = this->m_slotMap.Insert(69);
+    EXPECT_FALSE(this->m_slotMap.Empty());
+    this->m_slotMap.Remove(key1);
+    EXPECT_FALSE(this->m_slotMap.Empty());
+    this->m_slotMap.Remove(key2);
+}
+}   // namespace Bigfoot