From 13925ed3d5488497e9b644b650d814b57dcaac70 Mon Sep 17 00:00:00 2001
From: Markus Unterwaditzer <markus@unterwaditzer.net>
Date: Tue, 22 Sep 2015 17:36:34 +0200
Subject: [PATCH] Extra asserts

---
 vdirsyncer/utils/vobject.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/vdirsyncer/utils/vobject.py b/vdirsyncer/utils/vobject.py
index 82a74fa..374d000 100644
--- a/vdirsyncer/utils/vobject.py
+++ b/vdirsyncer/utils/vobject.py
@@ -286,6 +286,8 @@ class _Component(object):
         self.props = new_lines
 
     def __setitem__(self, key, val):
+        assert isinstance(val, text_type)
+        assert u'\n' not in val
         del self[key]
         line = u'{}:{}'.format(key, val)
         self.props.append(line)