From 0fc377b76f10eb283d4de76b8fe7c083b95f70b7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Fri, 23 Jun 2023 17:24:11 -0600
Subject: [PATCH] test-gunicode: add new test to show that unichar_iswide() is
 borked

I discovered this while looking at the tests with wide characters in the next
patch. It's something to fix, but not directly relevant to the issue of
skipping ANSI in ellipsization. We will generate output that is wider than
expected in some cases, but wide characters are used very rarely so this isn't
such a big problem.

(cherry picked from commit d9c72e54190db2a0845d1558b5beb734e9f629ff)

Related: RHEL-31219
---
 src/test/meson.build     |  2 ++
 src/test/test-gunicode.c | 27 +++++++++++++++++++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 src/test/test-gunicode.c

diff --git a/src/test/meson.build b/src/test/meson.build
index 5430e72ab5..1d61dc343f 100644
--- a/src/test/meson.build
+++ b/src/test/meson.build
@@ -469,6 +469,8 @@ tests += [
 
         [files('test-gpt.c')],
 
+        [files('test-gunicode.c')],
+
         [files('test-log.c')],
 
         [files('test-ipcrm.c'),
diff --git a/src/test/test-gunicode.c b/src/test/test-gunicode.c
new file mode 100644
index 0000000000..1836cdc04a
--- /dev/null
+++ b/src/test/test-gunicode.c
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "gunicode.h"
+#include "tests.h"
+#include "utf8.h"
+
+TEST(unichar_iswide) {
+        char32_t c;
+        int r;
+
+        /* FIXME: the cats are wide, but we get this wrong */
+        for (const char *narrow = "abX_…ąęµ!" "😼😿🙀😸😻"; *narrow; narrow += r) {
+                r = utf8_encoded_to_unichar(narrow, &c);
+                bool w = unichar_iswide(c);
+                assert_se(r > 0);
+                assert_se(!w);
+        }
+
+        for (const char *wide = "🐱／￥"; *wide; wide += r) {
+                r = utf8_encoded_to_unichar(wide, &c);
+                bool w = unichar_iswide(c);
+                assert_se(r > 0);
+                assert_se(w);
+        }
+}
+
+DEFINE_TEST_MAIN(LOG_INFO);