Global constants in PHPUnit

[francoele]

Is there a way to define constants in PHPUnit that can be used in all your test suites? For example, say I want to be able to test on jason.dev.mysite.com sometimes and jim.dev.mysite.com sometimes, and maybe specify when I run the command on which site I want to test. Is anything like this possible?The closest thing I found was this: http://www.phpunit.de/manual/3.4/en/appendixes.configuration.html