interpolation: minor refactoring

Signed-off-by: Christoph Ruegg <git@cdrnet.ch>

src/Managed.UnitTests/InterpolationTests/InterpolationContract.cs

@@ -31,9 +31,9 @@ namespace MathNet.Numerics.UnitTests.InterpolationTests
     using System;
     using System.Collections.Generic;
     using Gallio.Framework.Assertions;
+    using Interpolation;
     using MbUnit.Framework;
     using MbUnit.Framework.ContractVerifiers;
-    using Interpolation;
 
     internal class InterpolationContract<TInterpolation> : AbstractContract
         where TInterpolation : IInterpolation
@@ -51,7 +51,7 @@ namespace MathNet.Numerics.UnitTests.InterpolationTests
             yield return CreateFactoryReturnsCorrectTypeTest("FactoryReturnsCorrectType");
             yield return CreateConsistentCapabilityBehaviorTest("ConsistentCapabilityBehavior");
             yield return CreateInterpolationMatchesNodePointsTest("InterpolationMatchesNodePoints");
-            yield return CreateCanDealWithLinearSamplesTest("CanDealWithLinearSamples");
+            yield return CreateLinearBehaviorTest("LinearBehavior");
         }
 
         private Test CreateFactoryReturnsCorrectTypeTest(string name)
@@ -135,7 +135,7 @@ namespace MathNet.Numerics.UnitTests.InterpolationTests
             });
         }
 
-        private Test CreateCanDealWithLinearSamplesTest(string name)
+        private Test CreateLinearBehaviorTest(string name)
         {
             return new TestCase(name, () =>
             {
@@ -156,6 +156,8 @@ namespace MathNet.Numerics.UnitTests.InterpolationTests
                         values[i] = yOffset + i;
                     }
 
+                    var interpolation = Factory(points, values);
+
                     // build linear test vectors randomly between the sample points
                     double[] testPoints = new double[order + 1];
                     double[] testValues = new double[order + 1];
@@ -175,8 +177,7 @@ namespace MathNet.Numerics.UnitTests.InterpolationTests
                         }
                     }
 
-                    var interpolation = Factory(points, values);
-
+                    // verify interpolation with test samples
                     for (int i = 0; i < testPoints.Length; i++)
                     {
                         Assert.AreApproximatelyEqual(

src/Managed.UnitTests/InterpolationTests/InterpolationTest.cs

@@ -29,23 +29,23 @@
 namespace MathNet.Numerics.UnitTests.InterpolationTests
 {
     using System;
-    using MbUnit.Framework;
-    using MbUnit.Framework.ContractVerifiers;
     using Interpolation;
     using Interpolation.Algorithms;
+    using MbUnit.Framework;
+    using MbUnit.Framework.ContractVerifiers;
 
     [TestFixture]
     public class InterpolationTest
     {
         [VerifyContract]
-        public readonly IContract LinearSplineTests = new InterpolationContract<LinearSplineInterpolation>()
+        public readonly IContract LinearSplineContractTests = new InterpolationContract<LinearSplineInterpolation>()
         {
             Factory = Interpolation.CreateLinearBetweenPoints,
             Order = new[] { 2, 3, 6 }
         };
 
         [VerifyContract]
-        public readonly IContract RationalPoleFreeTests = new InterpolationContract<RationalPoleFreeInterpolation>()
+        public readonly IContract RationalPoleFreeContractTests = new InterpolationContract<RationalPoleFreeInterpolation>()
         {
             Factory = Interpolation.CreateRationalPoleFree,
             Order = new[] { 1, 2, 6 }

src/Managed/Interpolation/Algorithms/LinearSplineInterpolation.cs

@@ -88,7 +88,7 @@ namespace MathNet.Numerics.Interpolation.Algorithms
         /// Initialize the interpolation method with the given spline coefficients.
         /// </summary>
         /// <param name="samplePoints">Sample Points t</param>
-        /// <param name="sampleValues">Sample Values x(samplePoints)</param>
+        /// <param name="sampleValues">Sample Values x(t)</param>
         public void Initialize(
             IList<double> samplePoints,
             IList<double> sampleValues)

src/Managed/Interpolation/Interpolation.cs

@@ -28,7 +28,6 @@
 
 namespace MathNet.Numerics.Interpolation
 {
-    using System;
     using System.Collections.Generic;
     using Algorithms;