Tools for graphs were added

StructureHelperTests/ViewModelTests/GraphViewModelTest.cs

@@ -0,0 +1,41 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using NUnit.Framework;
+using StructureHelper.Windows.ViewModels.Graphs;
+using StructureHelperCommon.Models.Parameters;
+
+namespace StructureHelperTests.ViewModelTests
+{
+    internal class GraphViewModelTest
+    {
+        [TestCase(2, 3)]
+        [TestCase(2, 4)]
+        [TestCase(3, 3)]
+        public void RunShouldPass(int rowCount, int columnCount)
+        {
+            //Arrange
+            string[] labels = new string[columnCount];
+            for (int i = 0; i < columnCount; i++)
+            {
+                labels[i] = $"Column{i}";
+            }
+            var array = new ArrayParameter<double>(rowCount, columnCount, labels);
+            for (int i = 0; i < columnCount; i++)
+            {
+                for (int j = 0; j < rowCount; j++)
+                {
+                    array.Data[j, i] = i + 2 * j;
+                }
+            }
+            //Act
+            var vm = new GraphViewModel(array);
+            //Assert
+            Assert.IsNotNull(vm);
+            Assert.AreEqual(columnCount, vm.XItems.Collection.Count());
+            Assert.AreEqual(columnCount, vm.YItems.CollectionItems.Count());
+        }
+    }
+}