Fix: Change to static ConversionManager

* Also some formatting changes and using directives

src/SparseTransform.Tests/Library/ConversionManagerTests.cs

@@ -5,47 +5,41 @@ using System.Text;
 using System.Threading.Tasks;
 using DataStructures;
 using NUnit.Framework;
+using System.IO;
 
 
 namespace SparseTransform.Tests.Library
 {
     internal class ConversionManagerTests
     {
-
         [Test]
         public void Convert2DotTest()
         {
             string fileName = @"..\Resources\fileName.txt";
             String MMMatrix = File.ReadAllText(fileName);
-               
-
-            ConversionManager conversionManager = new ConversionManager();
-            String result = conversionManager.Convert2Dot(MMMatrix);
+            String result = ConversionManager.Convert2Dot(MMMatrix);
             String expectedResult = " ";
             Assert.AreEqual(expectedResult, result);
-
         }
+
         [Test]
         public void Partition2ColoredDotTest()
         {
             string fileName = @"..\Resources\fileName.txt";
             String MMMatrix = File.ReadAllText(fileName);
-            ConversionManager conversionManager = new ConversionManager();
-            String result = conversionManager.Partition2ColoredDot(MMMatrix);
+            String result = ConversionManager.Partition2ColoredDot(MMMatrix);
             String expectedResult = " ";
             Assert.AreEqual(expectedResult, result);
-
         }
+
         [Test]
         public void Partition2SeedMatrixTest()
         {
             string fileName = @"..\Resources\fileName.txt";
             String MMMatrix = File.ReadAllText(fileName);
-            ConversionManager conversionManager = new ConversionManager();
-            String result = conversionManager.Partition2SeedMatrix(MMMatrix);
+            String result = ConversionManager.Partition2SeedMatrix(MMMatrix);
             String expectedResult = " ";
             Assert.AreEqual(expectedResult, result);
-
         }
 
         [Test]
@@ -53,11 +47,9 @@ namespace SparseTransform.Tests.Library
         {
             string fileName = @"..\Resources\fileName.txt";
             String MMMatrix = File.ReadAllText(fileName);
-            ConversionManager conversionManager = new ConversionManager();
-            String result = conversionManager.Partition2CompressedMatrix(MMMatrix);
+            String result = ConversionManager.Partition2CompressedMatrix(MMMatrix);
             String expectedResult = " ";
             Assert.AreEqual(expectedResult, result);
-
         }
 
     }