1 files changed, 64 insertions, 1 deletions
diff --git a/tests/unistdio/test-u16-vasnprintf2.c b/tests/unistdio/test-u16-vasnprintf2.c
index aee67584..4c061c66 100644
--- a/tests/unistdio/test-u16-vasnprintf2.c
+++ b/tests/unistdio/test-u16-vasnprintf2.c
@@ -87,6 +87,69 @@ test_function (uint16_t * (*my_asnprintf) (uint16_t *, size_t *, const char *, .
       free (result);
     }
   }
+
+  /* Test the support of the 'ls' conversion specifier for wide strings.  */
+
+  {
+    const char *locale_string = "h\351t\351rog\351n\351it\351"; /* hétérogénéité */
+    wchar_t wide_string[20];
+    ASSERT (mbstowcs (wide_string, locale_string, SIZEOF (wide_string)) == 13);
+    {
+      size_t length;
+      uint16_t *result =
+        my_asnprintf (NULL, &length, "%ls %d", wide_string, 33, 44, 55);
+      static const uint16_t expected[] =
+        { 'h', 0x00e9, 't', 0x00e9, 'r', 'o', 'g', 0x00e9, 'n', 0x00e9,
+          'i', 't', 0x00e9, ' ', '3', '3', 0
+        };
+      ASSERT (result != NULL);
+      ASSERT (u16_strcmp (result, expected) == 0);
+      ASSERT (length == u16_strlen (result));
+      free (result);
+    }
+    { /* Width.  */
+      size_t length;
+      uint16_t *result =
+        my_asnprintf (NULL, &length, "%20ls %d", wide_string, 33, 44, 55);
+      static const uint16_t expected[] =
+        { ' ', ' ', ' ', ' ', ' ', ' ', ' ', 'h', 0x00e9, 't',
+          0x00e9, 'r', 'o', 'g', 0x00e9, 'n', 0x00e9, 'i', 't', 0x00e9,
+          ' ', '3', '3', 0
+        };
+      ASSERT (result != NULL);
+      ASSERT (u16_strcmp (result, expected) == 0);
+      ASSERT (length == u16_strlen (result));
+      free (result);
+    }
+    { /* FLAG_LEFT.  */
+      size_t length;
+      uint16_t *result =
+        my_asnprintf (NULL, &length, "%-20ls %d", wide_string, 33, 44, 55);
+      static const uint16_t expected[] =
+        { 'h', 0x00e9, 't', 0x00e9, 'r', 'o', 'g', 0x00e9, 'n', 0x00e9,
+          'i', 't', 0x00e9, ' ', ' ', ' ', ' ', ' ', ' ', ' ',
+          ' ', '3', '3', 0
+        };
+      ASSERT (result != NULL);
+      ASSERT (u16_strcmp (result, expected) == 0);
+      ASSERT (length == u16_strlen (result));
+      free (result);
+    }
+    { /* FLAG_ZERO: no effect.  */
+      size_t length;
+      uint16_t *result =
+        my_asnprintf (NULL, &length, "%020ls %d", wide_string, 33, 44, 55);
+      static const uint16_t expected[] =
+        { ' ', ' ', ' ', ' ', ' ', ' ', ' ', 'h', 0x00e9, 't',
+          0x00e9, 'r', 'o', 'g', 0x00e9, 'n', 0x00e9, 'i', 't', 0x00e9,
+          ' ', '3', '3', 0
+        };
+      ASSERT (result != NULL);
+      ASSERT (u16_strcmp (result, expected) == 0);
+      ASSERT (length == u16_strlen (result));
+      free (result);
+    }
+  }
 }
 
 static uint16_t *
@@ -115,5 +178,5 @@ main (int argc, char *argv[])
     return 1;
 
   test_vasnprintf ();
-  return 0;
+  return test_exit_status;
 }