Created a failing test.

src/icalendar/tests/test_fixed_issues.py

@@ -5,6 +5,7 @@ import datetime
 import os
 import pytz
 
+
 class TestIssues(unittest.TestCase):
 
 
@@ -61,7 +62,7 @@ END:VTIMEZONE"""
         # specified in UTC."
 
         event = icalendar.Event()
-        dt = pytz.utc.localize(datetime.datetime(2012,7,16,0,0,0))
+        dt = pytz.utc.localize(datetime.datetime(2012, 7, 16, 0, 0, 0))
         event.add('dtstart', dt)
         self.assertEqual(event.to_ical(),
             "BEGIN:VEVENT\r\n"
@@ -76,7 +77,7 @@ END:VTIMEZONE"""
 
         # Non-unicode characters
         event = icalendar.Event()
-        event.add("dtstart", datetime.datetime(2012,9,3,0,0,0))
+        event.add("dtstart", datetime.datetime(2012, 9, 3, 0, 0, 0))
         event.add("summary", u"abcdef")
         self.assertEqual(event.to_ical(),
             "BEGIN:VEVENT\r\nSUMMARY:abcdef\r\nDTSTART;VALUE=DATE-TIME:"
@@ -84,7 +85,7 @@ END:VTIMEZONE"""
 
         # Unicode characters
         event = icalendar.Event()
-        event.add("dtstart", datetime.datetime(2012,9,3,0,0,0))
+        event.add("dtstart", datetime.datetime(2012, 9, 3, 0, 0, 0))
         event.add("summary", u"åäö")
         self.assertEqual(event.to_ical(),
             "BEGIN:VEVENT\r\nSUMMARY:\xc3\xa5\xc3\xa4\xc3\xb6\r\n"
@@ -130,3 +131,8 @@ END:VEVENT"""
             "BEGIN:VEVENT\r\nATTACH;ENCODING=BASE64;FMTTYPE=text/plain;"
             "VALUE=BINARY:dGV4dA==\r\nEND:VEVENT\r\n"
         )
+
+
+    def test_wrong_values(self):
+        ical_content = "BEGIN:VEVENT\r\nSUMMARY;LANGUAGE=ru:te\r\nEND:VEVENT"
+        icalendar.Event.from_ical(ical_content).to_ical()

src/icalendar/tests/test_timezoned.py

@@ -7,6 +7,7 @@ import os
 
 from . import unittest
 
+
 class TestTimezoned(unittest.TestCase):
 
     def test_create_from_ical(self):

src/icalendar/tests/test_unit_cal.py

@@ -46,7 +46,7 @@ class TestCalComponent(unittest.TestCase):
         # With default values for non existing properties
         self.assertEqual(c.decoded('version', 'No Version'), 'No Version')
 
-        c.add('rdate', [datetime(2013,3,28), datetime(2013,3,27)])
+        c.add('rdate', [datetime(2013, 3, 28), datetime(2013, 3, 27)])
         self.assertEqual(type(c.decoded('rdate')), prop.vDDDLists)
 
         # The component can render itself in the RFC 2445 format.

src/icalendar/tests/test_unit_tools.py

@@ -1,6 +1,7 @@
 from . import unittest
 from icalendar.tools import UIDGenerator
 
+
 class TestTools(unittest.TestCase):
 
     def test_tools_UIDGenerator(self):
@@ -9,7 +10,7 @@ class TestTools(unittest.TestCase):
         g = UIDGenerator()
         uid = g.uid()
         txt = uid.to_ical()
-        length = 15+1+16+1+11
+        length = 15 + 1 + 16 + 1 + 11
         self.assertTrue(len(txt) == length)
         self.assertTrue('@example.com' in txt)