def make_driver(self, worker_number=0, xorg_running=False, executive=None):
port = Port(MockSystemHost(log_executive=True, executive=executive), 'xvfbdrivertestport', options=MockOptions(configuration='Release'))
port._config.build_directory = lambda configuration: "/mock-build"
port._test_runner_process_constructor = MockServerProcess
if xorg_running:
port._executive._running_pids['Xorg'] = 108
driver = XvfbDriver(port, worker_number=worker_number, pixel_tests=True)
driver._startup_delay_secs = 0
driver._xvfb_screen_depth = lambda: '24'
driver._xvfb_pipe = lambda: (3, 4)
driver._xvfb_read_display_id = lambda x: 1
driver._xvfb_close_pipe = lambda p: None
driver._port_server_environment = port.setup_environ_for_server(port.driver_name())
return driver
