# Library - Test Environment

Library developers will often want to test their project output alternately under unprotected and .NET-Reactor-protected conditions. To alternate your test environment, first, delete the existing reference to your library output in your test project and delete any library components installed in the Toolbox.

• To test the .NET-Reactor-protected version of your library, re-add the reference to your library back into your test application, this time pointing the reference to the .NET-Reactor-protected version of your library (Solution Explorer->References->Add Reference->[.NET-Reactor-protected version of your library]). Install this .NET-Reactor-protected version of your library as well to the Toolbox.

• To test the unprotected version of your library, add the reference to the unprotected version of your library into your test application, and install the (same) unprotected version of your library to the Toolbox.

In each case, the singular reference to your library and the version of your library installed to the Toolbox must be in agreement.