How do I test a Facebook page tab app without creating a public page for it?
Solution
Try this:
Go to your application: developers.facebook.com/apps open your app, on left side there is a section called advanced (settings->advanced), just click on that and you will find create a facebook page option, you can create a facebook page and after creating, you can set setting for publish or unpublish.
Problem
I'm developing a FB page tab app, and I want to provide my client a URL for testing the app. I don't have a page specifically for this app, nor do I want to create one - the test versions of the app should remain private. What is the normal process for testing page tab apps privately in this manner?