Yes, sure. Don't do that. :) If you're going to test that way, you want to have your own staging environment, distinct from other developers', just like you do

Yes, sure. Don't do that. :) If you're going to test that way, you want to have your own staging environment, distinct from other developers', just like you don't want two different people's unit tests writing to the same test data as they run their tests (unless that kind of race condition is exactly what you're testing, of course).