diff --git a/HPPH.Test/AverageTests.cs b/HPPH.Test/PixelHelper/AverageTests.cs
similarity index 98%
rename from HPPH.Test/AverageTests.cs
rename to HPPH.Test/PixelHelper/AverageTests.cs
index aa2434a..ab09d85 100644
--- a/HPPH.Test/AverageTests.cs
+++ b/HPPH.Test/PixelHelper/AverageTests.cs
@@ -1,6 +1,6 @@
 using HPPH.Reference;
 
-namespace HPPH.Test;
+namespace HPPH.Test.PixelHelper;
 
 [TestClass]
 public class AverageTests
diff --git a/HPPH.Test/ConvertTests.cs b/HPPH.Test/PixelHelper/ConvertTests.cs
similarity index 99%
rename from HPPH.Test/ConvertTests.cs
rename to HPPH.Test/PixelHelper/ConvertTests.cs
index 44266dd..3180114 100644
--- a/HPPH.Test/ConvertTests.cs
+++ b/HPPH.Test/PixelHelper/ConvertTests.cs
@@ -1,4 +1,4 @@
-namespace HPPH.Test;
+namespace HPPH.Test.PixelHelper;
 
 [TestClass]
 public class ConvertTests
diff --git a/HPPH.Test/MinMaxTests.cs b/HPPH.Test/PixelHelper/MinMaxTests.cs
similarity index 98%
rename from HPPH.Test/MinMaxTests.cs
rename to HPPH.Test/PixelHelper/MinMaxTests.cs
index 3484994..2c4f877 100644
--- a/HPPH.Test/MinMaxTests.cs
+++ b/HPPH.Test/PixelHelper/MinMaxTests.cs
@@ -1,6 +1,6 @@
 using HPPH.Reference;
 
-namespace HPPH.Test;
+namespace HPPH.Test.PixelHelper;
 
 [TestClass]
 public class MinMaxTests
diff --git a/HPPH.Test/QuantizeTests.cs b/HPPH.Test/PixelHelper/QuantizeTests.cs
similarity index 99%
rename from HPPH.Test/QuantizeTests.cs
rename to HPPH.Test/PixelHelper/QuantizeTests.cs
index ef1e908..94134a1 100644
--- a/HPPH.Test/QuantizeTests.cs
+++ b/HPPH.Test/PixelHelper/QuantizeTests.cs
@@ -1,6 +1,6 @@
 using HPPH.Reference;
 
-namespace HPPH.Test;
+namespace HPPH.Test.PixelHelper;
 
 [TestClass]
 public class CreateColorPaletteTests
diff --git a/HPPH.Test/SortTests.cs b/HPPH.Test/PixelHelper/SortTests.cs
similarity index 99%
rename from HPPH.Test/SortTests.cs
rename to HPPH.Test/PixelHelper/SortTests.cs
index cc3c667..1d5f271 100644
--- a/HPPH.Test/SortTests.cs
+++ b/HPPH.Test/PixelHelper/SortTests.cs
@@ -1,6 +1,6 @@
 using HPPH.Reference;
 
-namespace HPPH.Test;
+namespace HPPH.Test.PixelHelper;
 
 [TestClass]
 public class SortTests
diff --git a/HPPH.Test/SumTests.cs b/HPPH.Test/PixelHelper/SumTests.cs
similarity index 98%
rename from HPPH.Test/SumTests.cs
rename to HPPH.Test/PixelHelper/SumTests.cs
index a3a69a2..bb1f27a 100644
--- a/HPPH.Test/SumTests.cs
+++ b/HPPH.Test/PixelHelper/SumTests.cs
@@ -1,6 +1,6 @@
 using HPPH.Reference;
 
-namespace HPPH.Test;
+namespace HPPH.Test.PixelHelper;
 
 [TestClass]
 public class SumTests