class Capybara::Driver::Base def current_url raise NotImplementedError end def visit(path) raise NotImplementedError end def find(query) raise NotImplementedError end def evaluate_script(script) raise Capybara::NotSupportedByDriverError end def wait? false end def response_headers raise Capybara::NotSupportedByDriverError end def body raise NotImplementedError end def source raise NotImplementedError end def cleanup! end end