Added isready() error test to sandbox

sandbox/test_isready_connection_closed.py

@@ -0,0 +1,31 @@
+import gc
+import sys
+import os
+import signal
+import warnings
+import psycopg2
+
+print "Testing psycopg2 version %s" % psycopg2.__version__
+
+dbname = os.environ.get('PSYCOPG2_TESTDB', 'psycopg2_test')
+conn = psycopg2.connect("dbname=%s" % dbname)
+curs = conn.cursor()
+curs.isready()
+
+print "Now restart the test postgresql server to drop all connections, press enter when done."
+raw_input()
+
+try:
+    curs.isready() # No need to test return value
+    curs.isready()
+except:
+    print "Test passed"
+    sys.exit(0)
+
+if curs.isready():
+    print "Warning: looks like the connection didn't get killed. This test is probably in-effective"
+    print "Test inconclusive"
+    sys.exit(1)
+
+gc.collect() # used to error here
+print "Test Passed"