From 0e06a37b58fe6c6b651206a7dbef01592183e09d Mon Sep 17 00:00:00 2001
From: jaca <vitouejj@gmail.com>
Date: Sat, 30 Sep 2023 16:05:17 +0200
Subject: [PATCH] fix #322

---
 CHANGES.rst                                            |  4 +++-
 src/icalendar/prop.py                                  |  2 +-
 .../tests/calendars/issue_322_expected_calendar.ics    |  6 ++++++
 ...trings_characters_split_into_multiple_categories.py | 10 ++++++++++
 4 files changed, 20 insertions(+), 2 deletions(-)
 create mode 100644 src/icalendar/tests/calendars/issue_322_expected_calendar.ics
 create mode 100644 src/icalendar/tests/test_issue_322_single_strings_characters_split_into_multiple_categories.py

diff --git a/CHANGES.rst b/CHANGES.rst
index 7d0b6da4..c3a86018 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -20,7 +20,9 @@ New features:
 
 Bug fixes:
 
-- ...
+- CATEGORIES field now accepts strings properly
+  Ref: #322
+  [jacadzaca]
 
 5.0.10 (unreleased)
 -------------------
diff --git a/src/icalendar/prop.py b/src/icalendar/prop.py
index b4448c6c..42cc321a 100644
--- a/src/icalendar/prop.py
+++ b/src/icalendar/prop.py
@@ -261,7 +261,7 @@ def from_ical(ical, timezone=None):
 class vCategory:
 
     def __init__(self, c_list):
-        if not hasattr(c_list, '__iter__'):
+        if not hasattr(c_list, '__iter__') or isinstance(c_list, str):
             c_list = [c_list]
         self.cats = [vText(c) for c in c_list]
 
diff --git a/src/icalendar/tests/calendars/issue_322_expected_calendar.ics b/src/icalendar/tests/calendars/issue_322_expected_calendar.ics
new file mode 100644
index 00000000..cdfbe6fb
--- /dev/null
+++ b/src/icalendar/tests/calendars/issue_322_expected_calendar.ics
@@ -0,0 +1,6 @@
+BEGIN:VCALENDAR
+BEGIN:VEVENT
+SUMMARY:Event with bare string as argument for categories
+CATEGORIES:Lecture
+END:VEVENT
+END:VCALENDAR
diff --git a/src/icalendar/tests/test_issue_322_single_strings_characters_split_into_multiple_categories.py b/src/icalendar/tests/test_issue_322_single_strings_characters_split_into_multiple_categories.py
new file mode 100644
index 00000000..f4e539fc
--- /dev/null
+++ b/src/icalendar/tests/test_issue_322_single_strings_characters_split_into_multiple_categories.py
@@ -0,0 +1,10 @@
+from icalendar import Calendar, Event
+
+
+def test_issue_322_single_string_split_into_multiple_categories(calendars):
+    calendar = Calendar()
+    event = Event()
+    event.add('summary', 'Event with bare string as argument for categories')
+    event.add('categories', "Lecture")
+    calendar.add_component(event)
+    assert calendar.to_ical() == calendars.issue_322_expected_calendar.raw_ics