unit tests are done

UnitTests/ValidatorTests.cs

@@ -0,0 +1,44 @@
+using System;
+using System.Collections.Generic;
+using NUnit.Framework;
+using Shapes;
+using static Shapes.Validator;
+
+namespace Tests
+{
+    public class ValidatorTests
+    {
+        [SetUp]
+        public void SetUp()
+        {
+            
+        }
+
+        [Test]
+        public void ValidatePositiveDoubleTest()
+        {
+            Assert.That(()=> ValidatePositiveDouble(-10, "Error"), Throws.TypeOf<ShapeException>()
+                .With.Message.EqualTo("Error"));
+        }
+
+        [Test]
+        public void ValidateDoubleTest()
+        {
+            Assert.That(()=> ValidateDouble(Double.NaN, "Error"), Throws.TypeOf<ShapeException>()
+                .With.Message.EqualTo("Error"));
+        }
+
+        [Test]
+        public void ValidateRectangleTest()
+        {
+            List<Point> points = new List<Point>();
+            points.Add(new Point(30, 30));
+            points.Add(new Point(30, 30));
+            points.Add(new Point(30, 30));
+            points.Add(new Point(30, 30));
+            
+            Assert.That(()=> ValidateRectangle(points, "Error"), Throws.TypeOf<ShapeException>()
+                .With.Message.EqualTo("Error"));
+        }
+    }
+}