libio/tst_swprintf.c

   1 #include <array_length.h>
   2 #include <stdio.h>
   3 #include <support/check.h>
   4 #include <sys/types.h>
   5 #include <wchar.h>
   6
   7
   8 static wchar_t buf[100];
   9 static const struct
  10 {
  11   size_t n;
  12   const char *str;
  13   ssize_t exp;
  14 } tests[] =
  15   {
  16     { array_length (buf), "hello world", 11 },
  17     { 0, "hello world", -1 },
  18     { 1, "hello world", -1 },
  19     { 2, "hello world", -1 },
  20     { 11, "hello world", -1 },
  21     { 12, "hello world", 11 },
  22     { 0, "", -1 },
  23     { array_length (buf), "", 0 }
  24   };
  25
  26 static int
  27 do_test (void)
  28 {
  29   size_t n;
  30
  31   TEST_COMPARE (swprintf (buf, array_length (buf), L"Hello %s", "world"), 11);
  32   TEST_COMPARE_STRING_WIDE (buf, L"Hello world");
  33
  34   TEST_COMPARE (swprintf (buf, array_length (buf), L"Is this >%g< 3.1?", 3.1),
  35                 18);
  36   TEST_COMPARE_STRING_WIDE (buf, L"Is this >3.1< 3.1?");
  37
  38   for (n = 0; n < array_length (tests); ++n)
  39     {
  40       ssize_t res = swprintf (buf, tests[n].n, L"%s", tests[n].str);
  41
  42       if (tests[n].exp < 0 && res >= 0)
  43         {
  44           support_record_failure ();
  45           printf ("swprintf (buf, %Zu, L\"%%s\", \"%s\") expected to fail\n",
  46                   tests[n].n, tests[n].str);
  47         }
  48       else if (tests[n].exp >= 0 && tests[n].exp != res)
  49         {
  50           support_record_failure ();
  51           printf ("\
  52 swprintf (buf, %Zu, L\"%%s\", \"%s\") expected to return %Zd, but got %Zd\n",
  53                   tests[n].n, tests[n].str, tests[n].exp, res);
  54         }
  55       else
  56         printf ("swprintf (buf, %Zu, L\"%%s\", \"%s\") OK\n",
  57                 tests[n].n, tests[n].str);
  58     }
  59
  60   TEST_COMPARE (swprintf (buf, array_length (buf), L"%.0s", "foo"), 0);
  61   TEST_COMPARE_STRING_WIDE (buf, L"");
  62
  63   TEST_COMPARE (swprintf (buf, array_length (buf), L"%.0ls", L"foo"), 0);
  64   TEST_COMPARE_STRING_WIDE (buf, L"");
  65
  66   return 0;
  67 }
  68
  69 #include <support/test-driver.c>