From 44b975706ce4f90475b271c07e801d308e31dffc Mon Sep 17 00:00:00 2001
From: Ronny Bremer <rbremer@almanid.com>
Date: Sun, 4 Feb 2024 11:51:39 +0100
Subject: [PATCH] added test case with multibyte characters for split_line

---
 src/generator/ical.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/generator/ical.rs b/src/generator/ical.rs
index fe649c2..e83b07d 100644
--- a/src/generator/ical.rs
+++ b/src/generator/ical.rs
@@ -86,6 +86,14 @@ mod should {
         assert_eq!(text, split_line(text.replace("\r\n ", "")));
     }
 
+    #[test]
+    fn split_long_line_multibyte() {
+        // the following text includes multibyte characters (UTF-8) at strategic places to ensure
+        // split_line would panic if not multibyte aware
+        let text = "DESCRIPTION:ABCDEFGHIJ\\n\\nKLMNOPQRSTUVWXYZ123456789üABCDEFGHIJKLMNOPQRS\\n\\nTUVWXYZ123456ä7890ABCDEFGHIJKLM\\n\\nNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQRSTUVWXöYZ1234567890ABCDEFGHIJKLMNOPQRSTUVWX\\n\\nYZ1234567890abcdefghiÜjklm\\nnopqrstuvwx";
+        assert_eq!(text, split_line(text.replace("\r\n ", "")));
+    }
+
     #[test]
     fn protect_chars_in_params() {
         assert_eq!(