# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1411497721 -7200
# Node ID 19d6312453bed7173056bafd85878e228c99bcd5
# Parent  4018cd604f93cca203e4d01a342ff02f83daa7f0
Added a missing test for periods against earlier events.

diff -r 4018cd604f93 -r 19d6312453be imip_agent.py
--- a/imip_agent.py	Tue Sep 23 20:35:51 2014 +0200
+++ b/imip_agent.py	Tue Sep 23 20:42:01 2014 +0200
@@ -127,7 +127,11 @@
 def period_overlaps(freebusy, period):
     dtstart, dtend = period[:2]
     i = bisect_left(freebusy, (dtstart, dtend, None))
-    return i < len(freebusy) and (dtend is None or freebusy[i][0] < dtend)
+    return (
+        i < len(freebusy) and (dtend is None or freebusy[i][0] < dtend)
+        or
+        i > 0 and freebusy[i - 1] > dtstart
+        )
 
 # Sending of outgoing messages.