Unit test

ConsoleWriteUnitTest/UnitTest1.cs

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+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System;
+using System.IO;
+
+namespace ConsoleWriteUnitTest {
+    [TestClass]
+    public class UnitTest1 {
+        [TestMethod]
+        public void TestConsoleWrite() {
+            //Arrange
+            string vartEredmeny = "Hello World!";
+
+            //Action
+            using (var sw  = new StringWriter()) {
+                Console.SetOut(sw); //Atallitjuk az outputot 
+
+                ConsoleWrite.Program.Main();
+
+                var kapottEredmeny = sw.ToString().Trim();
+
+                //Assert
+                Assert.AreEqual(kapottEredmeny, vartEredmeny);
+            }
+
+
+        }
+    }
+}