docstr: call recv in a way that raises if there is nothing to receive
docstr_tok: ["call","recv","in","a","way","that","raises","if","there","is","nothing","to","receive"]
code: def recv(self, socket, **kwargs):
      """call recv in a way that raises if there is nothing to receive"""
      return self._select_recv(False, socket, **kwargs)
  
imports: import sys
  import time
  from threading import Thread
  from unittest import TestCase
  from pytest import mark
  import zmq
  from zmq.utils import jsonapi
label_desc: Use image node_id 11 for calling the BaseZMQTestCase obj's underlying member method code with example usage: obj.recv(socket) and returns: self