diff --git a/kx.Test/Connection/ConnectionAsyncWriteTests.cs b/kx.Test/Connection/ConnectionAsyncWriteTests.cs
index 81fd4ae..a992508 100644
--- a/kx.Test/Connection/ConnectionAsyncWriteTests.cs
+++ b/kx.Test/Connection/ConnectionAsyncWriteTests.cs
@@ -263,7 +263,7 @@ public async Task ConnectionWritesExpectedStringExpressionAndParametersToClientS
             }
         }
 
-        private Mock<Stream> CreateTestStream(List<byte> bytesWritten)
+        private static Mock<Stream> CreateTestStream(List<byte> bytesWritten)
         {
             Mock<Stream> testStream = new Mock<Stream>();
 
@@ -283,4 +283,4 @@ private Mock<Stream> CreateTestStream(List<byte> bytesWritten)
             return testStream;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/kx.Test/Connection/ConnectionSerialisationTests.cs b/kx.Test/Connection/ConnectionSerialisationTests.cs
index 209f5ec..6bf03be 100644
--- a/kx.Test/Connection/ConnectionSerialisationTests.cs
+++ b/kx.Test/Connection/ConnectionSerialisationTests.cs
@@ -1013,7 +1013,7 @@ public void ConnectionSerialisesAndDeserialisesTimeSpanArrayInputWithZipEnabled(
         }
 
 
-        private T[] CreateTestArray<T>(Func<int, T> elementBuilder, int arraySize)
+        private static T[] CreateTestArray<T>(Func<int, T> elementBuilder, int arraySize)
         {
             T[] array = new T[arraySize];
 
diff --git a/kx.Test/Connection/ConnectionSyncWriteTests.cs b/kx.Test/Connection/ConnectionSyncWriteTests.cs
index 2332f5f..7031d04 100644
--- a/kx.Test/Connection/ConnectionSyncWriteTests.cs
+++ b/kx.Test/Connection/ConnectionSyncWriteTests.cs
@@ -181,7 +181,7 @@ public void ConnectionWritesExpectedStringExpressionAndThreeObjectParametersToCl
             }
         }
 
-        private Mock<Stream> CreateTestStream(List<byte> bytesWritten)
+        private static Mock<Stream> CreateTestStream(List<byte> bytesWritten)
         {
             Mock<Stream> testStream = new Mock<Stream>();
 
@@ -221,4 +221,4 @@ private Mock<Stream> CreateTestStream(List<byte> bytesWritten)
             return testStream;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/kx.Test/Types/DictTests.cs b/kx.Test/Types/DictTests.cs
index 5aecfeb..8960078 100644
--- a/kx.Test/Types/DictTests.cs
+++ b/kx.Test/Types/DictTests.cs
@@ -6,10 +6,12 @@ namespace kx.Test.Types
     [TestFixture]
     public class DictTests
     {
+        private static readonly string[] DictKeys = {"Key_1"};
+        private static readonly object[] DictValues = {"Value_1"};
         [Test]
         public void DictInitialises()
         {
-            var dict = new c.Dict(new string[] { "Key_1" }, new object[] { "Value_1" });
+            var dict = new c.Dict(DictKeys, DictValues);
 
             Assert.IsNotNull(dict);
         }
@@ -18,14 +20,14 @@ public void DictInitialises()
         public void DictThrowsIfKeysIsNull()
         {
             Assert.Throws<ArgumentNullException>(() =>
-                new c.Dict(null, new object[] { "Value_1" }));
+                new c.Dict(null, DictValues));
         }
 
         [Test]
         public void DictThrowsIfValuesIsNull()
         {
             Assert.Throws<ArgumentNullException>(() =>
-                new c.Dict(new string[] { "Key_1" }, null));
+                new c.Dict(DictKeys, null));
         }
     }
 }
diff --git a/kx.Test/Types/FlipTests.cs b/kx.Test/Types/FlipTests.cs
index dd20e8d..6dda58a 100644
--- a/kx.Test/Types/FlipTests.cs
+++ b/kx.Test/Types/FlipTests.cs
@@ -6,10 +6,12 @@ namespace kx.Test.Types
     [TestFixture]
     public class FlipTests
     {
+        private static readonly string[] FlipKeys = {"Key_1"};
+        private static readonly object[] FlipValues = { "Value_1" };
         [Test]
         public void FlipInitialises()
         {
-            var flip = new c.Flip(new c.Dict(new string[] { "Key_1" }, new object[] { "Value_1" }));
+            var flip = new c.Flip(new c.Dict(FlipKeys, FlipValues));
 
             Assert.IsNotNull(flip);
         }
@@ -23,7 +25,7 @@ public void FlipThrowsIfDictIsNull()
         [Test]
         public void FlipAtReturnsValueForColumnName()
         {
-            var flip = new c.Flip(new c.Dict(new string[] { "Key_1" }, new object[] { "Value_1" }));
+            var flip = new c.Flip(new c.Dict(FlipKeys, FlipValues));
 
             object result = flip.at("Key_1");
 
@@ -34,7 +36,7 @@ public void FlipAtReturnsValueForColumnName()
         [Test]
         public void FlipAtThrowsIfColumnNameIfNotFound()
         {
-            var flip = new c.Flip(new c.Dict(new string[] { "Key_1" }, new object[] { "Value_1" }));
+            var flip = new c.Flip(new c.Dict(FlipKeys, FlipValues));
 
             Assert.Throws<IndexOutOfRangeException>(() => flip.at("Aardvark"));
         }
@@ -42,7 +44,7 @@ public void FlipAtThrowsIfColumnNameIfNotFound()
         [Test]
         public void FlipAtThrowsIfColumnNameIfNull()
         {
-            var flip = new c.Flip(new c.Dict(new string[] { "Key_1" }, new object[] { "Value_1" }));
+            var flip = new c.Flip(new c.Dict(FlipKeys, FlipValues));
 
             Assert.Throws<IndexOutOfRangeException>(() => flip.at(null));
         }