New 'c-*printf' modules for formatted output in C locale.

[gnulib.git] / tests / test-c-vasprintf.c

diff --git a/tests/test-c-vasprintf.c b/tests/test-c-vasprintf.c
new file mode 100644 (file)
index 0000000..00e7df4
--- /dev/null
+++ b/tests/test-c-vasprintf.c
@@ -0,0 +1,80 @@
+/* Test of c_asprintf() and c_vasprintf() functions.
+   Copyright (C) 2011-2012 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 <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "c-vasprintf.h"
+
+#include <locale.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "macros.h"
+
+static int
+my_c_asprintf (char **result, const char *format, ...)
+{
+  va_list args;
+  int ret;
+
+  va_start (args, format);
+  ret = c_vasprintf (result, format, args);
+  va_end (args);
+  return ret;
+}
+
+int
+main (int argc, char *argv[])
+{
+  /* configure should already have checked that the locale is supported.  */
+  if (setlocale (LC_ALL, "") == NULL)
+    return 1;
+
+  /* Test behaviour of snprintf() as a "control group".
+     (We should be running in a locale where ',' is the decimal point.) */
+  {
+    char s[16];
+
+    snprintf (s, sizeof s, "%#.0f", 1.0);
+    if (!strcmp (s, "1."))
+      {
+        /* Skip the test, since we're not in a useful locale for testing. */
+        return 77;
+      }
+    ASSERT (!strcmp (s, "1,"));
+  }
+
+  /* Test behaviour of c_asprintf() and c_vasprintf().
+     They should always use '.' as the decimal point. */
+  {
+    int retval;
+    char *s;
+
+    retval = c_asprintf (&s, "%#.0f", 1.0);
+    ASSERT (s != NULL);
+    ASSERT (!strcmp (s, "1."));
+    ASSERT (retval == 2);
+    free (s);
+
+    retval = my_c_asprintf (&s, "%#.0f", 1.0);
+    ASSERT (s != NULL);
+    ASSERT (!strcmp (s, "1."));
+    ASSERT (retval == 2);
+    free (s);
+  }
+
+  return 0;
+}