tests/lib/libc/string/t_strcmp.c

   1 /* $NetBSD: t_strcmp.c,v 1.4 2012/03/25 08:17:54 joerg Exp $ */
   2
   3 /*
   4  * Written by J.T. Conklin <jtc@acorntoolworks.com>
   5  * Public domain.
   6  */
   7
   8 #include <atf-c.h>
   9 #include <string.h>
  10 #include <unistd.h>
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13
  14 ATF_TC(strcmp_basic);
  15 ATF_TC_HEAD(strcmp_basic, tc)
  16 {
  17         atf_tc_set_md_var(tc, "descr", "Test strcmp(3) results, #1");
  18 }
  19
  20 ATF_TC_BODY(strcmp_basic, tc)
  21 {
  22         /* try to trick the compiler */
  23         int (*f)(const char *, const char *s) = strcmp;
  24
  25         unsigned int a0, a1, t;
  26         char buf0[64];
  27         char buf1[64];
  28         int ret;
  29
  30         struct tab {
  31                 const char*     val0;
  32                 const char*     val1;
  33                 int             ret;
  34         };
  35
  36         const struct tab tab[] = {
  37                 { "",                   "",                     0 },
  38
  39                 { "a",                  "a",                    0 },
  40                 { "a",                  "b",                    -1 },
  41                 { "b",                  "a",                    +1 },
  42                 { "",                   "a",                    -1 },
  43                 { "a",                  "",                     +1 },
  44
  45                 { "aa",                 "aa",                   0 },
  46                 { "aa",                 "ab",                   -1 },
  47                 { "ab",                 "aa",                   +1 },
  48                 { "a",                  "aa",                   -1 },
  49                 { "aa",                 "a",                    +1 },
  50
  51                 { "aaa",                "aaa",                  0 },
  52                 { "aaa",                "aab",                  -1 },
  53                 { "aab",                "aaa",                  +1 },
  54                 { "aa",                 "aaa",                  -1 },
  55                 { "aaa",                "aa",                   +1 },
  56
  57                 { "aaaa",               "aaaa",                 0 },
  58                 { "aaaa",               "aaab",                 -1 },
  59                 { "aaab",               "aaaa",                 +1 },
  60                 { "aaa",                "aaaa",                 -1 },
  61                 { "aaaa",               "aaa",                  +1 },
  62
  63                 { "aaaaa",              "aaaaa",                0 },
  64                 { "aaaaa",              "aaaab",                -1 },
  65                 { "aaaab",              "aaaaa",                +1 },
  66                 { "aaaa",               "aaaaa",                -1 },
  67                 { "aaaaa",              "aaaa",                 +1 },
  68
  69                 { "aaaaaa",             "aaaaaa",               0 },
  70                 { "aaaaaa",             "aaaaab",               -1 },
  71                 { "aaaaab",             "aaaaaa",               +1 },
  72                 { "aaaaa",              "aaaaaa",               -1 },
  73                 { "aaaaaa",             "aaaaa",                +1 },
  74         };
  75
  76         for (a0 = 0; a0 < sizeof(long); ++a0) {
  77                 for (a1 = 0; a1 < sizeof(long); ++a1) {
  78                         for (t = 0; t < __arraycount(tab); ++t) {
  79                                 memcpy(&buf0[a0], tab[t].val0,
  80                                        strlen(tab[t].val0) + 1);
  81                                 memcpy(&buf1[a1], tab[t].val1,
  82                                        strlen(tab[t].val1) + 1);
  83
  84                                 ret = f(&buf0[a0], &buf1[a1]);
  85
  86                                 if ((ret == 0 && tab[t].ret != 0) ||
  87                                     (ret <  0 && tab[t].ret >= 0) ||
  88                                     (ret >  0 && tab[t].ret <= 0)) {
  89                                         fprintf(stderr, "a0 %d, a1 %d, t %d\n",
  90                                             a0, a1, t);
  91                                         fprintf(stderr, "\"%s\" \"%s\" %d\n",
  92                                             &buf0[a0], &buf1[a1], ret);
  93                                         atf_tc_fail("Check stderr for details");
  94                                 }
  95                         }
  96                 }
  97         }
  98 }
  99
 100 ATF_TC(strcmp_simple);
 101 ATF_TC_HEAD(strcmp_simple, tc)
 102 {
 103         atf_tc_set_md_var(tc, "descr", "Test strcmp(3) results, #2");
 104 }
 105
 106 ATF_TC_BODY(strcmp_simple, tc)
 107 {
 108         char buf1[10] = "xxx";
 109         char buf2[10] = "xxy";
 110
 111         ATF_CHECK(strcmp(buf1, buf1) == 0);
 112         ATF_CHECK(strcmp(buf2, buf2) == 0);
 113
 114         ATF_CHECK(strcmp("x\xf6x", "xox") > 0);
 115         ATF_CHECK(strcmp("xxx", "xxxyyy") < 0);
 116         ATF_CHECK(strcmp("xxxyyy", "xxx") > 0);
 117
 118         ATF_CHECK(strcmp(buf1 + 0, buf2 + 0) < 0);
 119         ATF_CHECK(strcmp(buf1 + 1, buf2 + 1) < 0);
 120         ATF_CHECK(strcmp(buf1 + 2, buf2 + 2) < 0);
 121         ATF_CHECK(strcmp(buf1 + 3, buf2 + 3) == 0);
 122
 123         ATF_CHECK(strcmp(buf2 + 0, buf1 + 0) > 0);
 124         ATF_CHECK(strcmp(buf2 + 1, buf1 + 1) > 0);
 125         ATF_CHECK(strcmp(buf2 + 2, buf1 + 2) > 0);
 126         ATF_CHECK(strcmp(buf2 + 3, buf1 + 3) == 0);
 127 }
 128
 129 ATF_TP_ADD_TCS(tp)
 130 {
 131
 132         ATF_TP_ADD_TC(tp, strcmp_basic);
 133         ATF_TP_ADD_TC(tp, strcmp_simple);
 134
 135         return atf_no_error();
 136 }