vasnwprintf: Add tests.

* tests/test-vasnwprintf.c: New file, based on tests/test-vasnprintf.c.
* modules/vasnwprintf-tests: New file, based on
modules/vasnprintf-tests.

1 files changed, 122 insertions, 0 deletions

diff --git a/tests/test-vasnwprintf.c b/tests/test-vasnwprintf.c
new file mode 100644
index 0000000000..19db93694b
--- /dev/null
+++ b/tests/test-vasnwprintf.c
@@ -0,0 +1,122 @@
+/* Test of vasnwprintf() and asnwprintf() functions.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include "vasnwprintf.h"
+
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+
+#include "macros.h"
+
+static void
+test_function (wchar_t * (*my_asnwprintf) (wchar_t *, size_t *, const wchar_t *, ...))
+{
+  wchar_t buf[8];
+  int size;
+
+  for (size = 0; size <= 8; size++)
+    {
+      size_t length = size;
+      wchar_t *result = my_asnwprintf (NULL, &length, L"%d", 12345);
+      ASSERT (result != NULL);
+      ASSERT (wcscmp (result, L"12345") == 0);
+      ASSERT (length == 5);
+      free (result);
+    }
+
+  for (size = 0; size <= 8; size++)
+    {
+      size_t length;
+      wchar_t *result;
+
+      wmemcpy (buf, L"DEADBEEF", 8);
+      length = size;
+      result = my_asnwprintf (buf, &length, L"%d", 12345);
+      ASSERT (result != NULL);
+      ASSERT (wcscmp (result, L"12345") == 0);
+      ASSERT (length == 5);
+      if (size < 5 + 1)
+        ASSERT (result != buf);
+      ASSERT (wmemcmp (buf + size, &L"DEADBEEF"[size], 8 - size) == 0);
+      if (result != buf)
+        free (result);
+    }
+
+  /* Note: This test assumes IEEE 754 representation of 'double' floats.  */
+  for (size = 0; size <= 8; size++)
+    {
+      size_t length;
+      wchar_t *result;
+
+      wmemcpy (buf, L"DEADBEEF", 8);
+      length = size;
+      result = my_asnwprintf (buf, &length, L"%2.0f", 1.6314159265358979e+125);
+      ASSERT (result != NULL);
+      /* The exact result and the result on glibc systems is
+         163141592653589790215729350939528493057529598899734151772468186268423257777068536614838678161083520756952076273094236944990208
+         On Cygwin, the result is
+         163141592653589790215729350939528493057529600000000000000000000000000000000000000000000000000000000000000000000000000000000000
+         On HP-UX 11.31 / hppa and IRIX 6.5, the result is
+         163141592653589790000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
+       */
+      ASSERT (wcslen (result) == 126);
+      ASSERT (wmemcmp (result, L"163141592653589790", 18) == 0);
+      ASSERT (length == 126);
+      if (size < 126 + 1)
+        ASSERT (result != buf);
+      ASSERT (wmemcmp (buf + size, &L"DEADBEEF"[size], 8 - size) == 0);
+      if (result != buf)
+        free (result);
+    }
+}
+
+static wchar_t *
+my_asnwprintf (wchar_t *resultbuf, size_t *lengthp, const wchar_t *format, ...)
+{
+  va_list args;
+  wchar_t *ret;
+
+  va_start (args, format);
+  ret = vasnwprintf (resultbuf, lengthp, format, args);
+  va_end (args);
+  return ret;
+}
+
+static void
+test_vasnwprintf ()
+{
+  test_function (my_asnwprintf);
+}
+
+static void
+test_asnwprintf ()
+{
+  test_function (asnwprintf);
+}
+
+int
+main (int argc, char *argv[])
+{
+  test_vasnwprintf ();
+  test_asnwprintf ();
+  return 0;
+}