Fix CastingTest.ToUpperInvariant test

It did check on ToUpper rather than ToUpperInvariant

Author: hazzik

src/NHibernate.Test/Linq/CasingTest.cs

@@ -3,47 +3,47 @@
 
 namespace NHibernate.Test.Linq
 {
-    [TestFixture]
-    public class CasingTest : LinqTestCase
-    {
-        [Test]
-        public void ToUpper()
-        {
-            var name = (from e in db.Employees
-                        where e.EmployeeId == 1
-                        select e.FirstName.ToUpper())
-                       .Single();
-            Assert.AreEqual("NANCY", name);
-        }
-
-        [Test]
-        public void ToUpperInvariant()
-        {
-            var name = (from e in db.Employees
-                        where e.EmployeeId == 1
-                        select e.FirstName.ToUpper())
-                       .Single();
-            Assert.AreEqual("NANCY", name);
-        }
-
-        [Test]
-        public void ToLower()
-        {
-            var name = (from e in db.Employees
-                        where e.EmployeeId == 1
-                        select e.FirstName.ToLower())
-                       .Single();
-            Assert.AreEqual("nancy", name);
-        }
-
-        [Test]
-        public void ToLowerInvariant()
-        {
-            var name = (from e in db.Employees
-                        where e.EmployeeId == 1
-                        select e.FirstName.ToLowerInvariant())
-                       .Single();
-            Assert.AreEqual("nancy", name);
-        }
-    }
-}
+	[TestFixture]
+	public class CasingTest : LinqTestCase
+	{
+		[Test]
+		public void ToUpper()
+		{
+			var name = (from e in db.Employees
+						where e.EmployeeId == 1
+						select e.FirstName.ToUpper()).Single();
+
+			Assert.That(name, Is.EqualTo("NANCY"));
+		}
+
+		[Test]
+		public void ToUpperInvariant()
+		{
+			var name = (from e in db.Employees
+						where e.EmployeeId == 1
+						select e.FirstName.ToUpperInvariant()).Single();
+
+			Assert.That(name, Is.EqualTo("NANCY"));
+		}
+
+		[Test]
+		public void ToLower()
+		{
+			var name = (from e in db.Employees
+						where e.EmployeeId == 1
+						select e.FirstName.ToLower()).Single();
+
+			Assert.That(name, Is.EqualTo("nancy"));
+		}
+
+		[Test]
+		public void ToLowerInvariant()
+		{
+			var name = (from e in db.Employees
+						where e.EmployeeId == 1
+						select e.FirstName.ToLowerInvariant()).Single();
+
+			Assert.That(name, Is.EqualTo("nancy"));
+		}
+	}
+}