Activation error occured while trying to get instance of type Database, key "" <-- blank

Question

I'm trying out the Enterprise Library 5.0 and was doing some unit-tests on my BL, do I need to have a app.config on the DL or on the Test project?

note: I already have the configuration settings on my web.config on my web project.

how I use the DAAB:

private static Database db = DatabaseFactory.CreateDatabase();

db.ExecuteNonQuery("spInsertSalesman", salesman.Fullname);

my app.config on DL:

<configuration>
    <configSections>
        <section name="dataConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings, Microsoft.Practices.EnterpriseLibrary.Data, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" />
    </configSections>
    <dataConfiguration defaultDatabase="DBTEST" />
    <connectionStrings>
        <add name="DBTEST" connectionString="Data Source=[dbsource];Initial Catalog=[dbname];User Id=sa;Password=password;"
            providerName="System.Data.SqlClient" />
    </connectionStrings>
</configuration>

Answer 1

i was referencing the wrong .dll copy. it works now, thanks for the help.