+static void test_sr_vsprintf_ascii(const char *expected, char *format, ...)
+{
+ va_list args, args_copy;
+ char *s;
+ int len;
+
+ /* Get length of buffer required. */
+ va_start(args, format);
+ va_copy(args_copy, args);
+ len = sr_vsnprintf_ascii(NULL, 0, format, args);
+ va_end(args);
+
+ /* Allocate buffer and write out command. */
+ s = g_malloc0(len + 1);
+ len = sr_vsprintf_ascii(s, format, args_copy);
+ va_end(args_copy);
+
+ fail_unless(s != NULL,
+ "Invalid result for '%s': len = %i.", expected, len);
+ fail_unless(!strcmp(s, expected),
+ "Invalid result for '%s': %s.", expected, s);
+ g_free(s);
+}
+