t/packtestu64.c

   1 /*
   2  * Copyright © 2015, 2023 Nick Bowler
   3  *
   4  * Test application to verify 64-bit unsigned unpacking functions.
   5  *
   6  * License WTFPL2: Do What The Fuck You Want To Public License, version 2.
   7  * This is free software: you are free to do what the fuck you want to.
   8  * There is NO WARRANTY, to the extent permitted by law.
   9  */
  10
  11 #include "pack.h"
  12 #include "tap.h"
  13
  14 static const unsigned char zero[8];
  15 static const unsigned char minus_one[8] = {
  16         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
  17 };
  18
  19 static const unsigned char test_pattern[8] = {
  20         0xde, 0xad, 0xbe, 0xef, 0xf0, 0x0d, 0xca, 0xfe
  21 };
  22
  23 #define test(func, pattern, expected) do { \
  24         unsigned long long result__ = (func)(pattern); \
  25         if (!tap_result(result__ == (expected), "%s(%s)", #func, #expected)) { \
  26                 tap_diag("  expected: %llu", (unsigned long long)(expected)); \
  27                 tap_diag("  actual:   %llu", result__); \
  28         } \
  29 } while (0)
  30
  31 int main(void)
  32 {
  33 #if PACK_HAVE_64BIT
  34         tap_plan(6);
  35
  36         test(unpack_64_be, zero,         0);
  37         test(unpack_64_be, minus_one,    0xffffffffffffffffll);
  38         test(unpack_64_be, test_pattern, 0xdeadbeeff00dcafell);
  39         test(unpack_64_le, zero,         0);
  40         test(unpack_64_le, minus_one,    0xffffffffffffffffll);
  41         test(unpack_64_le, test_pattern, 0xfeca0df0efbeaddell);
  42 #else
  43         tap_skip_all("no 64-bit support");
  44 #endif
  45
  46         tap_done();
  47 }