From 7db9bf2aa06bdb169a6271069dcace98f57d67d5 Mon Sep 17 00:00:00 2001
From: Nicco Kunzmann <niccokunzmann@rambler.ru>
Date: Sat, 4 Nov 2023 18:45:30 +0000
Subject: [PATCH] reproduce fuzzing error

see https://github.com/collective/icalendar/pull/577#discussion_r1382441779
---
 src/icalendar/tests/test_oss_fuzz_errors.py | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 src/icalendar/tests/test_oss_fuzz_errors.py

diff --git a/src/icalendar/tests/test_oss_fuzz_errors.py b/src/icalendar/tests/test_oss_fuzz_errors.py
new file mode 100644
index 00000000..fdf380e6
--- /dev/null
+++ b/src/icalendar/tests/test_oss_fuzz_errors.py
@@ -0,0 +1,9 @@
+"""This file collects errors that the OSS FUZZ build has found."""
+from icalendar import Calendar
+import pytest
+
+
+def test_stack_is_empty():
+    """If we get passed an invalid string, we expect to get a ValueError."""
+    with pytest.raises(ValueError):
+        Calendar.from_ical("END:CALENDAR")