test_cancel: make tests a little less timing sensitive
- increase resolution of sleep/check in loop:/
- add 0.5s more tolerance to tests
diff --git a/serial/urlhandler/protocol_loop.py b/serial/urlhandler/protocol_loop.py
index 5bba4d3..7bf6cf9 100644
--- a/serial/urlhandler/protocol_loop.py
+++ b/serial/urlhandler/protocol_loop.py
@@ -189,8 +189,8 @@
# must wait so that unit test succeeds
time_left = self._write_timeout
while time_left > 0 and not self._cancel_write:
- time.sleep(min(time_left, 1))
- time_left -= 1
+ time.sleep(min(time_left, 0.5))
+ time_left -= 0.5
if self._cancel_write:
return 0 # XXX
raise writeTimeoutError