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 #include "report.h"
  13 #include "tvec.h"
  14
  15 static struct tvec_state tvstate;
  16 static dstr d = DSTR_INIT;
  17 static char strbuf[1024];
  18
  19 #define TESTGROUP(name) TVEC_TESTGROUP_TAG(grp, &tvstate, name)
  20
  21 static void PRINTF_LIKE(1, 2) format(const char *fmt, ...)
  22 {
  23   va_list ap;
  24   va_start(ap, fmt);
  25   dstr_reset(&d);
  26   dstr_vputf(&d, fmt, &ap);
  27   va_end(ap);
  28 }
  29
  30 static void PRINTF_LIKE(1, 2) prepare(const char *fmt, ...)
  31 {
  32   va_list ap;
  33   int n;
  34
  35   va_start(ap, fmt);
  36 #ifdef HAVE_SNPRINTF
  37   n = vsnprintf(strbuf, sizeof(strbuf), fmt, ap);
  38 #else
  39   n = vsprintf(strbuf, fmt, ap);
  40 #endif
  41   assert(0 <= n && n < sizeof(strbuf));
  42 }
  43
  44 #define TEST_KNOWN(fmtargs, want) do {                                  \
  45   format fmtargs;                                                       \
  46   tvec_claimeq_string(&tvstate, d.buf, d.len, want, strlen(want),       \
  47                       __FILE__, __LINE__, "format " #fmtargs);          \
  48 } while (0)
  49
  50 #define TEST_REF(fmtargs) do {                                          \
  51   format fmtargs;                                                       \
  52   prepare fmtargs;                                                      \
  53   tvec_claimeq_string(&tvstate, d.buf, d.len, strbuf, strlen(strbuf),   \
  54                       __FILE__, __LINE__, "format " #fmtargs);          \
  55 } while (0)
  56
  57 #define LENGTHY \
  58   "This is a rather longer string than the code is expecting: will it fit?"
  59
  60 int main(int argc, char *argv[])
  61 {
  62   struct tvec_test test;
  63   int argpos;
  64
  65   tvec_parseargs(argc, argv, &tvstate, &argpos, &tvec_adhocconfig);
  66   if (argpos < argc) die(2, "no input files expected");
  67   tvec_adhoc(&tvstate, &test);
  68
  69   TESTGROUP("basics") {
  70     TEST_KNOWN(("Hello, world!"), "Hello, world!");
  71     TEST_KNOWN(("just a ->%%<- sign"), "just a ->%<- sign");
  72   }
  73
  74   TESTGROUP("integers") {
  75     TEST_KNOWN(("Testing, testing, %d, %d, %d.", 1, 2, 3),
  76                "Testing, testing, 1, 2, 3.");
  77     TEST_KNOWN(("->%5d<-", 138), "->  138<-");
  78     TEST_KNOWN(("->%*d<-", 5, 138), "->  138<-");
  79     TEST_KNOWN(("->%-*d<-", 5, 138), "->138  <-");
  80     TEST_KNOWN(("->%*d<-", -5, 138), "->138  <-");
  81     TEST_KNOWN(("->%-*d<-", -5, 138), "->138  <-");
  82   }
  83
  84   TESTGROUP("strings") {
  85     TEST_KNOWN(("->%.*s<-", 5, "truncate me"), "->trunc<-");
  86     TEST_KNOWN(("->%.*s<-", -5, "don't truncate me"),
  87                "->don't truncate me<-");
  88     TEST_KNOWN(("Truncation indirect: ->%.*s<-", 10,
  89                 "a long string to be chopped"),
  90                "Truncation indirect: ->a long str<-");
  91   }
  92
  93   TESTGROUP("combinations") {
  94     TEST_KNOWN(("%08lx:%s", 0x65604204ul, "tripe-ec"), "65604204:tripe-ec");
  95     TEST_REF(("big float: ->%f<- and integer %d\n", DBL_MAX, 42));
  96   }
  97
  98   TESTGROUP("argument-order") {
  99     TEST_KNOWN(("Testing, testing, %3$d, %2$d, %1$d.", 3, 2, 1),
 100                "Testing, testing, 1, 2, 3.");
 101     TEST_KNOWN(("Truncation indirect: ->%1$.*2$s<-",
 102                 "a long string to be chopped", 10),
 103                "Truncation indirect: ->a long str<-");
 104   }
 105
 106   TESTGROUP("misc")
 107     TEST_KNOWN(("%s", LENGTHY), LENGTHY);
 108
 109   return (tvec_end(&tvstate));
 110 }