From 43d3041883017892e96fb2cd9979033d816c4053 Mon Sep 17 00:00:00 2001
From: IKEDA Soji <ikeda@conversion.co.jp>
Date: Thu, 9 Jan 2020 15:46:25 +0900
Subject: [PATCH] Adding test.

---
 t/Tools_Text.t | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/t/Tools_Text.t b/t/Tools_Text.t
index 46a5bebe1..a29c05b47 100644
--- a/t/Tools_Text.t
+++ b/t/Tools_Text.t
@@ -9,7 +9,7 @@ use Test::More;
 
 use Sympa::Tools::Text;
 
-plan tests => 12;
+plan tests => 13;
 
 my $email = q{&'+-./09=_A@Z.a-z};
 my $unicode_email =
@@ -47,3 +47,7 @@ is $dec, $unicode_email, 'decode_filesystem_safe, Unicode';
 
 # ToDo: foldcase()
 # ToDo: wrap_text()
+
+# Noncharacters: U+d800, U+10FFE, U+110000, U+200000
+is Sympa::Tools::Text::canonic_text("\xED\xA0\x80\n\xF4\x8F\xBF\xBE\n\xF4\x90\x80\x80\n\xF8\x88\x80\x80\x80\n"), Encode::encode_utf8("\x{FFFD}\x{FFFD}\x{FFFD}\n\x{FFFD}\n\x{FFFD}\x{FFFD}\x{FFFD}\x{FFFD}\n\x{FFFD}\x{FFFD}\x{FFFD}\x{FFFD}\x{FFFD}\n");
+