lib/printf_test.c

   1 /*
   2  *      BIRD Library -- String Functions Tests
   3  *
   4  *      (c) 2015 CZ.NIC z.s.p.o.
   5  *
   6  *      Can be freely distributed and used under the terms of the GNU GPL.
   7  */
   8
   9 #include "test/birdtest.h"
  10
  11 #include "lib/string.h"
  12
  13 #define BSPRINTF(nw, res, buf, fmt, ...) \
  14   do { \
  15     int n = bsprintf(buf, fmt, ##__VA_ARGS__); \
  16     bt_assert_msg(n == nw, "fmt=\"%s\" returns n=%d, want %d", fmt, n, nw); \
  17     bt_assert_msg(buf[n] == 0, "fmt=\"%s\" buf[%d] should be \'\\0\', found 0x%02x", fmt, n, buf[n]); \
  18     bt_assert_msg(memcmp(buf, res, nw) == 0, "fmt=\"%s\" writes \"%*s\", want \"%*s\"", fmt, (n < nw ? n : nw), buf, nw, res); \
  19   } while (0)
  20
  21 static int
  22 t_simple(void)
  23 {
  24   char buf[256];
  25   memset(buf, 0xa5, 256);
  26
  27   BSPRINTF(0, "", buf, "", NULL);
  28   BSPRINTF(1, "%", buf, "%%", NULL);
  29   BSPRINTF(2, "%%", buf, "%%%%", NULL);
  30
  31   BSPRINTF(1, "\x00", buf, "%c", 0);
  32   BSPRINTF(1, "@", buf, "@", 64);
  33   BSPRINTF(1, "\xff", buf, "%c", 0xff);
  34
  35   errno = 5;
  36   BSPRINTF(18, "Input/output error", buf, "%m");
  37   errno = 0;
  38
  39   BSPRINTF(18, "Input/output error", buf, "%M", 5);
  40
  41   BSPRINTF(11, "TeSt%StRiNg", buf, "%s", "TeSt%StRiNg");
  42
  43   if (sizeof(void *) == 4)
  44     BSPRINTF(8, "1a15600d", buf, "%p", (void *) 0x1a15600d);
  45   else
  46     BSPRINTF(16, "00000fee1a15600d", buf, "%p", (void *) 0xfee1a15600d);
  47
  48   long ln = 0;
  49   BSPRINTF(10, "TeStStRiNg", buf, "TeStS%lntRiNg", &ln);
  50   bt_assert_msg(ln == 5, "fmt=\"TeStS%%lntRiNg\", &ln makes ln=%ld, want 5", ln);
  51
  52   BSPRINTF(2, "%d", buf, "%%d", 1);
  53   BSPRINTF(1, "1", buf, "%d", 1);
  54   BSPRINTF(2, "+1", buf, "%+d", 1);
  55   BSPRINTF(2, " 1", buf, "% d", 1);
  56   BSPRINTF(2, "-1", buf, "%d", -1);
  57   BSPRINTF(11, "-2147483648", buf, "%d", -2147483648);
  58
  59   return 1;
  60 }
  61
  62 int
  63 main(int argc, char *argv[])
  64 {
  65   bt_init(argc, argv);
  66
  67   bt_test_suite(t_simple, "printf without varargs");
  68
  69   return bt_exit_value();
  70 }