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 int PRINTF_LIKE(1, 2) format(const char *fmt, ...)
  22 {
  23   va_list ap;
  24   int n;
  25
  26   va_start(ap, fmt);
  27   dstr_reset(&d);
  28   n = dstr_vputf(&d, fmt, &ap);
  29   va_end(ap);
  30   return (n);
  31 }
  32
  33 static void PRINTF_LIKE(1, 2) prepare(const char *fmt, ...)
  34 {
  35   va_list ap;
  36   int n;
  37
  38   va_start(ap, fmt);
  39 #ifdef HAVE_SNPRINTF
  40   n = vsnprintf(strbuf, sizeof(strbuf), fmt, ap);
  41 #else
  42   n = vsprintf(strbuf, fmt, ap);
  43 #endif
  44   assert(0 <= n && n < sizeof(strbuf));
  45 }
  46
  47 #define TEST_KNOWN(fmtargs, want) do {                                  \
  48   int n; n = format fmtargs;                                            \
  49   tvec_claimeq_int(&tvstate, n, strlen(want),                           \
  50                    __FILE__, __LINE__, "format " #fmtargs);             \
  51   tvec_claimeq_string(&tvstate, d.buf, d.len, want, strlen(want),       \
  52                       __FILE__, __LINE__, "format " #fmtargs);          \
  53 } while (0)
  54
  55 #define TEST_REF(fmtargs) do {                                          \
  56   int n = format fmtargs;                                               \
  57   prepare fmtargs;                                                      \
  58   tvec_claimeq_int(&tvstate, n, strlen(strbuf),                         \
  59                    __FILE__, __LINE__, "format " #fmtargs);             \
  60   tvec_claimeq_string(&tvstate, d.buf, d.len, strbuf, strlen(strbuf),   \
  61                       __FILE__, __LINE__, "format " #fmtargs);          \
  62 } while (0)
  63
  64 #define LENGTHY \
  65   "This is a rather longer string than the code is expecting: will it fit?"
  66
  67 int main(int argc, char *argv[])
  68 {
  69   struct tvec_test test;
  70   int argpos;
  71
  72   tvec_parseargs(argc, argv, &tvstate, &argpos, &tvec_adhocconfig);
  73   if (argpos < argc) die(2, "no input files expected");
  74   tvec_adhoc(&tvstate, &test);
  75
  76   TESTGROUP("basics") {
  77     TEST_KNOWN(("Hello, world!"), "Hello, world!");
  78     TEST_KNOWN(("just a ->%%<- sign"), "just a ->%<- sign");
  79   }
  80
  81   TESTGROUP("integers") {
  82     TEST_KNOWN(("Testing, testing, %d, %d, %d.", 1, 2, 3),
  83                "Testing, testing, 1, 2, 3.");
  84     TEST_KNOWN(("->%5d<-", 138), "->  138<-");
  85     TEST_KNOWN(("->%*d<-", 5, 138), "->  138<-");
  86     TEST_KNOWN(("->%-*d<-", 5, 138), "->138  <-");
  87     TEST_KNOWN(("->%*d<-", -5, 138), "->138  <-");
  88     TEST_KNOWN(("->%-*d<-", -5, 138), "->138  <-");
  89   }
  90
  91   TESTGROUP("strings") {
  92     TEST_KNOWN(("->%.*s<-", 5, "truncate me"), "->trunc<-");
  93     TEST_KNOWN(("->%.*s<-", -5, "don't truncate me"),
  94                "->don't truncate me<-");
  95     TEST_KNOWN(("Truncation indirect: ->%.*s<-", 10,
  96                 "a long string to be chopped"),
  97                "Truncation indirect: ->a long str<-");
  98   }
  99
 100   TESTGROUP("combinations") {
 101     TEST_KNOWN(("%08lx:%s", 0x65604204ul, "tripe-ec"), "65604204:tripe-ec");
 102     TEST_REF(("big float: ->%f<- and integer %d\n", DBL_MAX, 42));
 103   }
 104
 105   TESTGROUP("argument-order") {
 106     TEST_KNOWN(("Testing, testing, %3$d, %2$d, %1$d.", 3, 2, 1),
 107                "Testing, testing, 1, 2, 3.");
 108     TEST_KNOWN(("Truncation indirect: ->%1$.*2$s<-",
 109                 "a long string to be chopped", 10),
 110                "Truncation indirect: ->a long str<-");
 111   }
 112
 113   TESTGROUP("misc")
 114     TEST_KNOWN(("%s", LENGTHY), LENGTHY);
 115
 116   return (tvec_end(&tvstate));
 117 }