Fix assertions

Author: hazzik

src/NHibernate.Test/SqlTest/Query/NativeSQLQueriesFixture.cs

@@ -843,9 +843,9 @@ public void AutoDetectAliasing()
 			//		s.Flush();
 			object[] result = (object[]) s.GetNamedQuery("spaceship").UniqueResult();
 			enterprise = (SpaceShip) result[0];
-			Assert.IsTrue(50d == enterprise.Speed);
-			Assert.IsTrue(450d == ExtractDoubleValue(result[1]));
-			Assert.IsTrue(4500d == ExtractDoubleValue(result[2]));
+			Assert.That(enterprise.Speed, Is.EqualTo(50d));
+			Assert.That(ExtractDoubleValue(result[1]), Is.EqualTo(450d));
+			Assert.That(ExtractDoubleValue(result[2]), Is.EqualTo(4500d));
 			s.Delete(enterprise);
 			t.Commit();
 			s.Close();