mdw@git.distorted.org.uk Git - mLib/blob - struct/t/dstr-putf-test.c

   1 #include "config.h"
   2
   3 #include <assert.h>
   4 #include <float.h>
   5 #include <stdarg.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9
  10 #include "dstr.h"
  11 #include "macros.h"
  12
  13 static int win = 0, lose = 0;
  14 static dstr d = DSTR_INIT;
  15 static char buf[1024];
  16
  17 static void check(const char *what, const char *want)
  18 {
  19   if (STRCMP(want, ==, d.buf))
  20     win++;
  21   else {
  22     lose++;
  23     fprintf(stderr, "test failed: %s\n  expected: %s\n     found: %s\n",
  24             what, want, d.buf);
  25   }
  26 }
  27
  28 static void PRINTF_LIKE(1, 2) format(const char *fmt, ...)
  29 {
  30   va_list ap;
  31   va_start(ap, fmt);
  32   dstr_reset(&d);
  33   dstr_vputf(&d, fmt, &ap);
  34   va_end(ap);
  35 }
  36
  37 static void PRINTF_LIKE(1, 2) prepare(const char *fmt, ...)
  38 {
  39   va_list ap;
  40   int n;
  41
  42   va_start(ap, fmt);
  43 #ifdef HAVE_SNPRINTF
  44   n = vsnprintf(buf, sizeof(buf), fmt, ap);
  45 #else
  46   n = vsprintf(buf, fmt, ap);
  47 #endif
  48   assert(0 <= n && n < sizeof(buf));
  49 }
  50
  51 #define TEST1(fmtargs) do {                                             \
  52   format fmtargs;                                                       \
  53   prepare fmtargs;                                                      \
  54   check(#fmtargs, buf);                                                 \
  55 } while (0)
  56
  57 #define TEST2(fmtargs, want) do {                                       \
  58   format fmtargs;                                                       \
  59   check(#fmtargs, want);                                                \
  60 } while (0)
  61
  62 #define LENGTHY \
  63   "This is a rather longer string than the code is expecting: will it fit?"
  64
  65 int main(void)
  66 {
  67   TEST2(("Hello, world!"), "Hello, world!");
  68   TEST2(("just a ->%%<- sign"), "just a ->%<- sign");
  69   TEST2(("Testing, testing, %d, %d, %d.", 1, 2, 3),
  70         "Testing, testing, 1, 2, 3.");
  71   TEST2(("->%5d<-", 138), "->  138<-");
  72   TEST2(("->%*d<-", 5, 138), "->  138<-");
  73   TEST2(("->%-*d<-", 5, 138), "->138  <-");
  74   TEST2(("->%*d<-", -5, 138), "->138  <-");
  75   TEST2(("->%-*d<-", -5, 138), "->138  <-");
  76   TEST2(("->%.*s<-", 5, "truncate me"), "->trunc<-");
  77   TEST2(("->%.*s<-", -5, "don't truncate me"), "->don't truncate me<-");
  78   TEST2(("Truncation indirect: ->%.*s<-", 10, "a long string to be chopped"),
  79         "Truncation indirect: ->a long str<-");
  80   TEST2(("%08lx:%s", 0x65604204ul, "tripe-ec"), "65604204:tripe-ec");
  81   TEST2(("%s", LENGTHY), LENGTHY);
  82
  83   TEST1(("big float: ->%f<- and integer %d\n", DBL_MAX, 42));
  84
  85   TEST2(("Testing, testing, %3$d, %2$d, %1$d.", 3, 2, 1),
  86         "Testing, testing, 1, 2, 3.");
  87   TEST2(("Truncation indirect: ->%1$.*2$s<-",
  88          "a long string to be chopped", 10),
  89         "Truncation indirect: ->a long str<-");
  90
  91   if (!lose) printf("All tests successful.\n");
  92   else printf("FAILED %d of %d tests.\n", lose, win + lose);
  93   return (!!lose);
  94 }