Interpolation with test done

StructureHelperTests/UnitTests/Interpolation/InterpolationTest.cs

@@ -0,0 +1,23 @@
+using NUnit.Framework;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperTests.UnitTests.Interpolation
+{
+    public class InterpolationTest
+    {
+        [TestCase(1.5, 5.5, 1, 2, 5, 6)]
+        public void InterpolationTestMethod(double x, double y, double x1, double x2, double y1, double y2)
+        {
+            //Arrange
+            //Act
+            var result = StructureHelperCommon.Services.MathUtils.Interpolation(x, x1, x2, y1, y2);
+            //Assert
+            Assert.AreEqual(result, y);
+
+        }
+    }
+}