Given that testbrowser/mechanize are meant to simulate a user interacting with a single window/tab web browser (which is inherently a linear process), there probably isn't any concurrency issues to worry about.
If a test is simulating concurrent access to a site, it'd be using multiple browser instances.
Given that testbrowser/ mechanize are meant to simulate a user interacting with a single window/tab web browser (which is inherently a linear process), there probably isn't any concurrency issues to worry about.
If a test is simulating concurrent access to a site, it'd be using multiple browser instances.