--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Library/LibrarySystem.Tests/Core/StockTests.cs	Wed Apr 04 19:20:20 2012 +0100
@@ -0,0 +1,26 @@
+using System;
+using LibrarySystem.Core;
+using NUnit.Framework;
+
+namespace LibrarySystem.Tests.Core
+{
+    [TestFixture]
+    class StockTests
+    {
+        [Test]
+        public void Create_WithValidName_ShouldReturnPublisher()
+        {
+            var publisher = Publisher.Create("dummy");
+            var publication = Publication.Create("dummy","dummy", publisher, "dummy");
+            var book = Book.Create("dummy", publication);
+            var stock = Stock.Create(book, true);
+            Assert.IsNotNull(stock);
+        }
+
+        [Test]
+        public void Create_WithNullBook_ShouldThrowAgrumentNullException()
+        {
+            Assert.Throws<ArgumentNullException>(() => Stock.Create(null, true));
+        }
+    }
+}