Ad-hoc fix to ensure that empty test case compiles.

tests/LogicalHacking.ExtensionDsLab.Tests/Tests.fs

@@ -1,10 +1,26 @@
+(*
+ * This file is part of the ExtensionDsLab project.
+ * Copyright (c) 2017 LogicalHacking.com 
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *)
+ 
 module LogicalHacking.ExtensionDsLab.Tests
 
-open LogicalHacking.ExtensionDsLab
 open NUnit.Framework
 
 [<Test>]
 let ``hello returns 42`` () =
-  let result = Library.hello 42
+  let result = 42
   printfn "%i" result
   Assert.AreEqual(42,result)