One other thing to recommend -- build a positive way to tell which system you are running, test or production. As a matter of policy here, all pages have a common header form, the bottom of the header displays the logical name of the database in a contrasting banner line. The configuration file contains the line

     PROD: my.data.base.name
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or

    TEST: the.test.db.for.me
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This line appears on the banner, repeated as many times as will fit.

A glance at the top three lines on any screen in the application tells you know where you are. This has saved more than one person's sanity....