src/functional/string.c

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