def start_selenium_server(display=":99"):
"""Start a selenium server on a random port."""
for _ in range(10):
info("Bringing up selenium")
port = pick_random_port()
SELENIUM_SERVER_JAR = os.environ["SELENIUM_SERVER_JAR"]
sel_server = Popen(
["java", "-jar", SELENIUM_SERVER_JAR, "-port", str(port)],
env=dict(os.environ, DISPLAY=display),
stdout=PIPE,
stderr=PIPE,
)
# Stupid selenium takes an age to start. I can't really sleep
# until I can tell it's done
sel_server.port = port
if wait_for_selenium_start(sel_server):
return sel_server
else:
continue
else:
raise Exception("Failed to start selenium server")
