socket.io单元测试用例

该测试用例基于OpenHarmony系统下，采用原库测试用例 进行单元测试

单元测试用例覆盖情况

接口名	是否通过	备注
connect()	pass
set_open_listener()	pass
set_fail_listener()	pass
set_reconnecting_listener()	pass
set_reconnect_listener()	pass
set_close_listener()	pass
set_socket_open_listener()	pass
set_socket_close_listener()	pass
clear_con_listeners()	pass
clear_socket_listeners()	pass
set_reconnect_attempts()	pass
set_reconnect_delay()	pass
set_reconnect_delay_max()	pass
close()	pass
sync_close()	pass
opened()	pass
get_sessionid()	pass
set_nsp()	pass
on()	pass
once()	pass
off()	pass
off_all()	pass
socket_close()	pass
on_error()	pass
emit()	pass
uint8ArrayToString()	pass
stringToUint8Array()	pass