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