Tests for Hungarian locale

tests/by-util/test_date.rs

@@ -1622,6 +1622,32 @@ fn test_date_locale_en_us_vs_c_difference() {
     }
 }
 
+#[test]
+#[cfg(unix)]
+fn test_date_locale_hu_hungarian() {
+    // Regression test for uutils/coreutils#11240: the GNU modifier fast-path
+    // ("%-e") used to run before ICU localization, so "%b"/"%A" came out in
+    // English even under hu_HU.UTF-8. Pin an explicit format string so the
+    // assertion is deterministic across glibc versions (the default D_T_FMT
+    // for hu_HU differs between distros).
+    if !is_locale_available("hu_HU.UTF-8") {
+        return;
+    }
+
+    let result = new_ucmd!()
+        .env("LC_ALL", "hu_HU.UTF-8")
+        .env("TZ", "UTC")
+        .arg("-d")
+        .arg("2025-12-14T13:00:00")
+        .arg("+%Y. %b %-e., %A, %H:%M:%S %Z")
+        .succeeds();
+
+    assert_eq!(
+        result.stdout_str(),
+        "2025. dec 14., vasárnap, 13:00:00 UTC\n"
+    );
+}
+
 #[test]
 #[cfg(any(target_os = "linux", target_os = "android", target_vendor = "apple"))]
 fn test_date_locale_fr_french() {
@@ -2273,6 +2299,7 @@ fn test_locale_month_names() {
         ("es_ES.UTF-8", "enero", "junio", "diciembre"),
         ("it_IT.UTF-8", "gennaio", "giugno", "dicembre"),
         ("pt_BR.UTF-8", "janeiro", "junho", "dezembro"),
+        ("hu_HU.UTF-8", "január", "június", "december"),
         ("ja_JP.UTF-8", "1月", "6月", "12月"),
         ("zh_CN.UTF-8", "一月", "六月", "十二月"),
     ] {