Update fake test socket objects to exhibit Python 3 socket-closed flag

Re #520

1 files changed, 2 insertions, 0 deletions

diff --git a/tests/loop.py b/tests/loop.py
index 4f5dc163..e805ad96 100644
--- a/tests/loop.py
+++ b/tests/loop.py
@@ -37,9 +37,11 @@ class LoopSocket (object):
         self.__cv = threading.Condition(self.__lock)
         self.__timeout = None
         self.__mate = None
+        self._closed = False
 
     def close(self):
         self.__unlink()
+        self._closed = True
         try:
             self.__lock.acquire()
             self.__in_buffer = bytes()