diff --git a/tests/ImageSharp.Tests/Helpers/RowIntervalTests.cs b/tests/ImageSharp.Tests/Helpers/RowIntervalTests.cs
index f092da7082..629b3cdeb3 100644
--- a/tests/ImageSharp.Tests/Helpers/RowIntervalTests.cs
+++ b/tests/ImageSharp.Tests/Helpers/RowIntervalTests.cs
@@ -1,9 +1,9 @@
-using System;
-using System.Runtime.CompilerServices;
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
 
+using System;
+using System.Runtime.CompilerServices;
 using SixLabors.ImageSharp.Memory;
-using SixLabors.Memory;
-
 using Xunit;
 
 namespace SixLabors.ImageSharp.Tests.Helpers
@@ -35,4 +35,4 @@ namespace SixLabors.ImageSharp.Tests.Helpers
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/tests/ImageSharp.Tests/Numerics/RationalTests.cs b/tests/ImageSharp.Tests/Numerics/RationalTests.cs
index a9b9106c5c..caddd49216 100644
--- a/tests/ImageSharp.Tests/Numerics/RationalTests.cs
+++ b/tests/ImageSharp.Tests/Numerics/RationalTests.cs
@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
-using SixLabors.ImageSharp.MetaData.Profiles.Exif;
 using SixLabors.ImageSharp.Primitives;
 
 using Xunit;
diff --git a/tests/ImageSharp.Tests/TestUtilities/TestDataGenerator.cs b/tests/ImageSharp.Tests/TestUtilities/TestDataGenerator.cs
index 912b86e347..56cde41fc1 100644
--- a/tests/ImageSharp.Tests/TestUtilities/TestDataGenerator.cs
+++ b/tests/ImageSharp.Tests/TestUtilities/TestDataGenerator.cs
@@ -1,10 +1,24 @@
-using System;
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using System;
 using System.Numerics;
 
 namespace SixLabors.ImageSharp.Tests
 {
+    /// <summary>
+    /// Helper methods that allow the creation of random test data.
+    /// </summary>
     internal static class TestDataGenerator
     {
+        /// <summary>
+        /// Creates an <see cref="float[]"/> of the given length consisting of random values between the two ranges.
+        /// </summary>
+        /// <param name="rnd">The pseudo-random number generator.</param>
+        /// <param name="length">The length.</param>
+        /// <param name="minVal">The minimum value.</param>
+        /// <param name="maxVal">The maximum value.</param>
+        /// <returns>The <see cref="float[]"/>.</returns>
         public static float[] GenerateRandomFloatArray(this Random rnd, int length, float minVal, float maxVal)
         {
             float[] values = new float[length];
@@ -17,6 +31,14 @@ namespace SixLabors.ImageSharp.Tests
             return values;
         }
 
+        /// <summary>
+        /// Creates an <see cref="Vector4[]"/> of the given length consisting of random values between the two ranges.
+        /// </summary>
+        /// <param name="rnd">The pseudo-random number generator.</param>
+        /// <param name="length">The length.</param>
+        /// <param name="minVal">The minimum value.</param>
+        /// <param name="maxVal">The maximum value.</param>
+        /// <returns>The <see cref="Vector4[]"/>.</returns>
         public static Vector4[] GenerateRandomVectorArray(this Random rnd, int length, float minVal, float maxVal)
         {
             var values = new Vector4[length];
@@ -33,20 +55,32 @@ namespace SixLabors.ImageSharp.Tests
             return values;
         }
 
+        /// <summary>
+        /// Creates an <see cref="float[]"/> of the given length consisting of rounded random values between the two ranges.
+        /// </summary>
+        /// <param name="rnd">The pseudo-random number generator.</param>
+        /// <param name="length">The length.</param>
+        /// <param name="minVal">The minimum value.</param>
+        /// <param name="maxVal">The maximum value.</param>
+        /// <returns>The <see cref="float[]"/>.</returns>
         public static float[] GenerateRandomRoundedFloatArray(this Random rnd, int length, float minVal, float maxVal)
         {
             float[] values = new float[length];
 
             for (int i = 0; i < length; i++)
             {
-                values[i] = (float) Math.Round(rnd.GetRandomFloat(minVal, maxVal));
+                values[i] = (float)Math.Round(rnd.GetRandomFloat(minVal, maxVal));
             }
 
             return values;
         }
 
-
-
+        /// <summary>
+        /// Creates an <see cref="byte[]"/> of the given length consisting of random values.
+        /// </summary>
+        /// <param name="rnd">The pseudo-random number generator.</param>
+        /// <param name="length">The length.</param>
+        /// <returns>The <see cref="byte[]"/>.</returns>
         public static byte[] GenerateRandomByteArray(this Random rnd, int length)
         {
             byte[] values = new byte[length];
@@ -54,9 +88,6 @@ namespace SixLabors.ImageSharp.Tests
             return values;
         }
 
-        private static float GetRandomFloat(this Random rnd, float minVal, float maxVal)
-        {
-            return (float)rnd.NextDouble() * (maxVal - minVal) + minVal;
-        }
+        private static float GetRandomFloat(this Random rnd, float minVal, float maxVal) => ((float)rnd.NextDouble() * (maxVal - minVal)) + minVal;
     }
 }
\ No newline at end of file