src/functional/string.c

   1 #define _DEFAULT_SOURCE 1
   2 #define _BSD_SOURCE 1
   3 #include <stdio.h>
   4 #include <string.h>
   5 #include "test.h"
   6
   7 /* r = place to store result
   8  * f = function call to test (or any expression)
   9  * x = expected result
  10  * m = message to print on failure (with formats for r & x)
  11 **/
  12
  13 #define TEST(r, f, x, m) ( \
  14         ((r) = (f)) == (x) || \
  15         (t_error("%s failed (" m ")\n", #f, r, x), 0) )
  16
  17 #define TEST_S(s, x, m) ( \
  18         !strcmp((s),(x)) || \
  19         (t_error("[%s] != [%s] (%s)\n", s, x, m), 0) )
  20
  21 int main(void)
  22 {
  23         char b[32];
  24         char *s;
  25         int i;
  26
  27         b[16]='a'; b[17]='b'; b[18]='c'; b[19]=0;
  28         TEST(s, strcpy(b, b+16), b, "wrong return %p != %p");
  29         TEST_S(s, "abc", "strcpy gave incorrect string");
  30         TEST(s, strcpy(b+1, b+16), b+1, "wrong return %p != %p");
  31         TEST_S(s, "abc", "strcpy gave incorrect string");
  32         TEST(s, strcpy(b+2, b+16), b+2, "wrong return %p != %p");
  33         TEST_S(s, "abc", "strcpy gave incorrect string");
  34         TEST(s, strcpy(b+3, b+16), b+3, "wrong return %p != %p");
  35         TEST_S(s, "abc", "strcpy gave incorrect string");
  36
  37         TEST(s, strcpy(b+1, b+17), b+1, "wrong return %p != %p");
  38         TEST_S(s, "bc", "strcpy gave incorrect string");
  39         TEST(s, strcpy(b+2, b+18), b+2, "wrong return %p != %p");
  40         TEST_S(s, "c", "strcpy gave incorrect string");
  41         TEST(s, strcpy(b+3, b+19), b+3, "wrong return %p != %p");
  42         TEST_S(s, "", "strcpy gave incorrect string");
  43
  44         TEST(s, memset(b, 'x', sizeof b), b, "wrong return %p != %p");
  45         TEST(s, strncpy(b, "abc", sizeof b - 1), b, "wrong return %p != %p");
  46         TEST(i, memcmp(b, "abc\0\0\0\0", 8), 0, "strncpy fails to zero-pad dest");
  47         TEST(i, b[sizeof b - 1], 'x', "strncpy overruns buffer when n > strlen(src)");
  48
  49         b[3] = 'x'; b[4] = 0;
  50         strncpy(b, "abc", 3);
  51         TEST(i, b[2], 'c', "strncpy fails to copy last byte: %hhu != %hhu");
  52         TEST(i, b[3], 'x', "strncpy overruns buffer to null-terminate: %hhu != %hhu");
  53
  54         TEST(i, !strncmp("abcd", "abce", 3), 1, "strncmp compares past n");
  55         TEST(i, !!strncmp("abc", "abd", 3), 1, "strncmp fails to compare n-1st byte");
  56
  57         strcpy(b, "abc");
  58         TEST(s, strncat(b, "123456", 3), b, "%p != %p");
  59         TEST(i, b[6], 0, "strncat failed to null-terminate (%d)");
  60         TEST_S(s, "abc123", "strncat gave incorrect string");
  61
  62         strcpy(b, "aaababccdd0001122223");
  63         TEST(s, strchr(b, 'b'), b+3, "%p != %p");
  64         TEST(s, strrchr(b, 'b'), b+5, "%p != %p");
  65         TEST(i, strspn(b, "abcd"), 10, "%d != %d");
  66         TEST(i, strcspn(b, "0123"), 10, "%d != %d");
  67         TEST(s, strpbrk(b, "0123"), b+10, "%d != %d");
  68
  69         strcpy(b, "abc   123; xyz; foo");
  70         TEST(s, strtok(b, " "), b, "%p != %p");
  71         TEST_S(s, "abc", "strtok result");
  72
  73         TEST(s, strtok(NULL, ";"), b+4, "%p != %p");
  74         TEST_S(s, "  123", "strtok result");
  75
  76         TEST(s, strtok(NULL, " ;"), b+11, "%p != %p");
  77         TEST_S(s, "xyz", "strtok result");
  78
  79         TEST(s, strtok(NULL, " ;"), b+16, "%p != %p");
  80         TEST_S(s, "foo", "strtok result");
  81
  82         memset(b, 'x', sizeof b);
  83         TEST(i, strlcpy(b, "abc", sizeof b - 1), 3, "length %d != %d");
  84         TEST(i, b[3], 0, "strlcpy did not null-terminate short string (%d)");
  85         TEST(i, b[4], 'x', "strlcpy wrote extra bytes (%d)");
  86
  87         memset(b, 'x', sizeof b);
  88         TEST(i, strlcpy(b, "abc", 2), 3, "length %d != %d");
  89         TEST(i, b[0], 'a', "strlcpy did not copy character %d");
  90         TEST(i, b[1], 0, "strlcpy did not null-terminate long string (%d)");
  91
  92         memset(b, 'x', sizeof b);
  93         TEST(i, strlcpy(b, "abc", 3), 3, "length %d != %d");
  94         TEST(i, b[2], 0, "strlcpy did not null-terminate l-length string (%d)");
  95
  96         TEST(i, strlcpy(NULL, "abc", 0), 3, "length %d != %d");
  97
  98         memcpy(b, "abc\0\0\0x\0", 8);
  99         TEST(i, strlcat(b, "123", sizeof b), 6, "length %d != %d");
 100         TEST_S(b, "abc123", "strlcat result");
 101
 102         memcpy(b, "abc\0\0\0x\0", 8);
 103         TEST(i, strlcat(b, "123", 6), 6, "length %d != %d");
 104         TEST_S(b, "abc12", "strlcat result");
 105         TEST(i, b[6], 'x', "strlcat wrote past string %d != %d");
 106
 107         memcpy(b, "abc\0\0\0x\0", 8);
 108         TEST(i, strlcat(b, "123", 4), 6, "length %d != %d");
 109         TEST_S(b, "abc", "strlcat result");
 110
 111         memcpy(b, "abc\0\0\0x\0", 8);
 112         TEST(i, strlcat(b, "123", 3), 6, "length %d != %d");
 113         TEST_S(b, "abc", "strlcat result");
 114
 115         return t_status;
 116 }