/*
* This stuff is all stolen (with permission, since it was in the public
* domain) from Henry Spencer's string and memory library. Thanks Henry.
*/
/*
* Test program for string(3) routines.
*
* Note that at least one Bell Labs implementation of the string
* routines flunks a couple of these tests -- the ones which test
* behavior on "negative" characters.
*/
#include <stdio.h>
#include <string.h>
char * index();
char * rindex();
#define STREQ(a, b) (strcmp((a), (b)) == 0)
char *it = "<UNSET>"; /* Routine name for message routines. */
int waserror = 0; /* For exit status. */
char uctest[] = "\004\203"; /* For testing signedness of chars. */
int charsigned; /* Result. */
/*
- check - complain if condition is not true
*/
void
check(thing, number)
int thing;
int number; /* Test number for error message. */
{
if (!thing) {
printf("%s flunked test %d\n", it, number);
waserror = 1;
}
}
/*
- equal - complain if first two args don't strcmp as equal
*/
void
equal(a, b, number)
char *a;
char *b;
int number; /* Test number for error message. */
{
check(a != NULL && b != NULL && STREQ(a, b), number);
}
char one[50];
char two[50];
#ifdef UNIXERR
#define ERR 1
#endif
#ifdef BERKERR
#define ERR 1
#endif
#ifdef ERR
int f;
extern char *sys_errlist[];
extern int sys_nerr;
extern int errno;
#endif
/* ARGSUSED */
main(argc, argv)
int argc;
char *argv[];
{
/*
* First, establish whether chars are signed.
*/
if (uctest[0] < uctest[1])
charsigned = 0;
else
charsigned = 1;
/*
* Then, do the rest of the work. Split into two functions because
* some compilers get unhappy about a single immense function.
*/
first();
second();
exit((waserror) ? 1 : 0);
}
first()
{
/*
* Test strcmp first because we use it to test other things.
*/
it = "strcmp";
check(strcmp("", "") == 0, 1); /* Trivial case. */
check(strcmp("a", "a") == 0, 2); /* Identity. */
check(strcmp("abc", "abc") == 0, 3); /* Multicharacter. */
check(strcmp("abc", "abcd") < 0, 4); /* Length mismatches. */
check(strcmp("abcd", "abc") > 0, 5);
check(strcmp("abcd", "abce") < 0, 6); /* Honest miscompares. */
check(strcmp("abce", "abcd") > 0, 7);
check(strcmp("a\203", "a") > 0, 8); /* Tricky if char signed. */
if (charsigned) /* Sign-bit comparison. */
check(strcmp("a\203", "a\003") < 0, 9);
else
check(strcmp("a\203", "a\003") > 0, 9);
check(strcmp("a", "a\203") < 0, 10); /* Tricky if char signed. */
/*
* Test strcpy next because we need it to set up other tests.
*/
it = "strcpy";
check(strcpy(one, "abcd") == one, 1); /* Returned value. */
equal(one, "abcd", 2); /* Basic test. */
(void) strcpy(one, "x");
equal(one, "x", 3); /* Writeover. */
equal(one+2, "cd", 4); /* Wrote too much? */
(void) strcpy(two, "hi there");
(void) strcpy(one, two);
equal(one, "hi there", 5); /* Basic test encore. */
equal(two, "hi there", 6); /* Stomped on source? */
(void) strcpy(one, "");
equal(one, "", 7); /* Boundary condition. */
/*
* strcat
*/
it = "strcat";
(void) strcpy(one, "ijk");
check(strcat(one, "lmn") == one, 1); /* Returned value. */
equal(one, "ijklmn", 2); /* Basic test. */
(void) strcpy(one, "x");
(void) strcat(one, "yz");
equal(one, "xyz", 3); /* Writeover. */
equal(one+4, "mn", 4); /* Wrote too much? */
(void) strcpy(one, "gh");
(void) strcpy(two, "ef");
(void) strcat(one, two);
equal(one, "ghef", 5); /* Basic test encore. */
equal(two, "ef", 6); /* Stomped on source? */
(void) strcpy(one, "");
(void) strcat(one, "");
equal(one, "", 7); /* Boundary conditions. */
(void) strcpy(one, "ab");
(void) strcat(one, "");
equal(one, "ab", 8);
(void) strcpy(one, "");
(void) strcat(one, "cd");
equal(one, "cd", 9);
/*
* strncat - first test it as strcat, with big counts, then
* test the count mechanism.
*/
it = "strncat";
(void) strcpy(one, "ijk");
check(strncat(one, "lmn", 99) == one, 1); /* Returned value. */
equal(one, "ijklmn", 2); /* Basic test. */
(void) strcpy(one, "x");
(void) strncat(one, "yz", 99);
equal(one, "xyz", 3); /* Writeover. */
equal(one+4, "mn", 4); /* Wrote too much? */
(void) strcpy(one, "gh");
(void) strcpy(two, "ef");
(void) strncat(one, two, 99);
equal(one, "ghef", 5); /* Basic test encore. */
equal(two, "ef", 6); /* Stomped on source? */
(void) strcpy(one, "");
(void) strncat(one, "", 99);
equal(one, "", 7); /* Boundary conditions. */
(void) strcpy(one, "ab");
(void) strncat(one, "", 99);
equal(one, "ab", 8);
(void) strcpy(one, "");
(void) strncat(one, "cd", 99);
equal(one, "cd", 9);
(void) strcpy(one, "ab");
(void) strncat(one, "cdef", 2);
equal(one, "abcd", 10); /* Count-limited. */
(void) strncat(one, "gh", 0);
equal(one, "abcd", 11); /* Zero count. */
(void) strncat(one, "gh", 2);
equal(one, "abcdgh", 12); /* Count and length equal. */
/*
* strncmp - first test as strcmp with big counts, then test
* count code.
*/
it = "strncmp";
check(strncmp("", "", 99) == 0, 1); /* Trivial case. */
check(strncmp("a", "a", 99) == 0, 2); /* Identity. */
check(strncmp("abc", "abc", 99) == 0, 3); /* Multicharacter. */
check(strncmp("abc", "abcd", 99) < 0, 4); /* Length unequal. */
check(strncmp("abcd", "abc", 99) > 0, 5);
check(strncmp("abcd", "abce", 99) < 0, 6); /* Honestly unequal. */
check(strncmp("abce", "abcd", 99) > 0, 7);
check(strncmp("a\203", "a", 2) > 0, 8); /* Tricky if '\203' < 0 */
if (charsigned) /* Sign-bit comparison. */
check(strncmp("a\203", "a\003", 2) < 0, 9);
else
check(strncmp("a\203", "a\003", 2) > 0, 9);
check(strncmp("abce", "abcd", 3) == 0, 10); /* Count limited. */
check(strncmp("abce", "abc", 3) == 0, 11); /* Count == length. */
check(strncmp("abcd", "abce", 4) < 0, 12); /* Nudging limit. */
check(strncmp("abc", "def", 0) == 0, 13); /* Zero count. */
/*
* strncpy - testing is a bit different because of odd semantics
*/
it = "strncpy";
check(strncpy(one, "abc", 4) == one, 1); /* Returned value. */
equal(one, "abc", 2); /* Did the copy go right? */
(void) strcpy(one, "abcdefgh");
(void) strncpy(one, "xyz", 2);
equal(one, "xycdefgh", 3); /* Copy cut by count. */
(void) strcpy(one, "abcdefgh");
(void) strncpy(one, "xyz", 3); /* Copy cut just before NUL. */
equal(one, "xyzdefgh", 4);
(void) strcpy(one, "abcdefgh");
(void) strncpy(one, "xyz", 4); /* Copy just includes NUL. */
equal(one, "xyz", 5);
equal(one+4, "efgh", 6); /* Wrote too much? */
(void) strcpy(one, "abcdefgh");
(void) strncpy(one, "xyz", 5); /* Copy includes padding. */
equal(one, "xyz", 7);
equal(one+4, "", 8);
equal(one+5, "fgh", 9);
(void) strcpy(one, "abc");
(void) strncpy(one, "xyz", 0); /* Zero-length copy. */
equal(one, "abc", 10);
(void) strncpy(one, "", 2); /* Zero-length source. */
equal(one, "", 11);
equal(one+1, "", 12);
equal(one+2, "c", 13);
(void) strcpy(one, "hi there");
(void) strncpy(two, one, 9);
equal(two, "hi there", 14); /* Just paranoia. */
equal(one, "hi there", 15); /* Stomped on source? */
/*
* strlen
*/
it = "strlen";
check(strlen("") == 0, 1); /* Empty. */
check(strlen("a") == 1, 2); /* Single char. */
check(strlen("abcd") == 4, 3); /* Multiple chars. */
/*
* strchr
*/
it = "strchr";
check(strchr("abcd", 'z') == NULL, 1); /* Not found. */
(void) strcpy(one, "abcd");
check(strchr(one, 'c') == one+2, 2); /* Basic test. */
check(strchr(one, 'd') == one+3, 3); /* End of string. */
check(strchr(one, 'a') == one, 4); /* Beginning. */
check(strchr(one, '\0') == one+4, 5); /* Finding NUL. */
(void) strcpy(one, "ababa");
check(strchr(one, 'b') == one+1, 6); /* Finding first. */
(void) strcpy(one, "");
check(strchr(one, 'b') == NULL, 7); /* Empty string. */
check(strchr(one, '\0') == one, 8); /* NUL in empty string. */
/*
* index - just like strchr
*/
it = "index";
check(index("abcd", 'z') == NULL, 1); /* Not found. */
(void) strcpy(one, "abcd");
check(index(one, 'c') == one+2, 2); /* Basic test. */
check(index(one, 'd') == one+3, 3); /* End of string. */
check(index(one, 'a') == one, 4); /* Beginning. */
check(index(one, '\0') == one+4, 5); /* Finding NUL. */
(void) strcpy(one, "ababa");
check(index(one, 'b') == one+1, 6); /* Finding first. */
(void) strcpy(one, "");
check(index(one, 'b') == NULL, 7); /* Empty string. */
check(index(one, '\0') == one, 8); /* NUL in empty string. */
/*
* strrchr
*/
it = "strrchr";
check(strrchr("abcd", 'z') == NULL, 1); /* Not found. */
(void) strcpy(one, "abcd");
check(strrchr(one, 'c') == one+2, 2); /* Basic test. */
check(strrchr(one, 'd') == one+3, 3); /* End of string. */
check(strrchr(one, 'a') == one, 4); /* Beginning. */
check(strrchr(one, '\0') == one+4, 5); /* Finding NUL. */
(void) strcpy(one, "ababa");
check(strrchr(one, 'b') == one+3, 6); /* Finding last. */
(void) strcpy(one, "");
check(strrchr(one, 'b') == NULL, 7); /* Empty string. */
check(strrchr(one, '\0') == one, 8); /* NUL in empty string. */
/*
* rindex - just like strrchr
*/
it = "rindex";
check(rindex("abcd", 'z') == NULL, 1); /* Not found. */
(void) strcpy(one, "abcd");
check(rindex(one, 'c') == one+2, 2); /* Basic test. */
check(rindex(one, 'd') == one+3, 3); /* End of string. */
check(rindex(one, 'a') == one, 4); /* Beginning. */
check(rindex(one, '\0') == one+4, 5); /* Finding NUL. */
(void) strcpy(one, "ababa");
check(rindex(one, 'b') == one+3, 6); /* Finding last. */
(void) strcpy(one, "");
check(rindex(one, 'b') == NULL, 7); /* Empty string. */
check(rindex(one, '\0') == one, 8); /* NUL in empty string. */
}
second()
{
/*
* strpbrk - somewhat like strchr
*/
it = "strpbrk";
check(strpbrk("abcd", "z") == NULL, 1); /* Not found. */
(void) strcpy(one, "abcd");
check(strpbrk(one, "c") == one+2, 2); /* Basic test. */
check(strpbrk(one, "d") == one+3, 3); /* End of string. */
check(strpbrk(one, "a") == one, 4); /* Beginning. */
check(strpbrk(one, "") == NULL, 5); /* Empty search list. */
check(strpbrk(one, "cb") == one+1, 6); /* Multiple search. */
(void) strcpy(one, "abcabdea");
check(strpbrk(one, "b") == one+1, 7); /* Finding first. */
check(strpbrk(one, "cb") == one+1, 8); /* With multiple search. */
check(strpbrk(one, "db") == one+1, 9); /* Another variant. */
(void) strcpy(one, "");
check(strpbrk(one, "bc") == NULL, 10); /* Empty string. */
check(strpbrk(one, "") == NULL, 11); /* Both strings empty. */
#if 0
/*
* strstr - somewhat like strchr
*/
it = "strstr";
check(strstr("abcd", "z") == NULL, 1); /* Not found. */
check(strstr("abcd", "abx") == NULL, 2); /* Dead end. */
(void) strcpy(one, "abcd");
check(strstr(one, "c") == one+2, 3); /* Basic test. */
check(strstr(one, "bc") == one+1, 4); /* Multichar. */
check(strstr(one, "d") == one+3, 5); /* End of string. */
check(strstr(one, "cd") == one+2, 6); /* Tail of string. */
check(strstr(one, "abc") == one, 7); /* Beginning. */
check(strstr(one, "abcd") == one, 8); /* Exact match. */
check(strstr(one, "abcde") == NULL, 9); /* Too long. */
check(strstr(one, "de") == NULL, 10); /* Past end. */
check(strstr(one, "") == one+4, 11); /* Finding empty. */
(void) strcpy(one, "ababa");
check(strstr(one, "ba") == one+1, 12); /* Finding first. */
(void) strcpy(one, "");
check(strstr(one, "b") == NULL, 13); /* Empty string. */
check(strstr(one, "") == one, 14); /* Empty in empty string. */
(void) strcpy(one, "bcbca");
check(strstr(one, "bca") == one+2, 15); /* False start. */
(void) strcpy(one, "bbbcabbca");
check(strstr(one, "bbca") == one+1, 16); /* With overlap. */
#endif
/*
* strspn
*/
it = "strspn";
check(strspn("abcba", "abc") == 5, 1); /* Whole string. */
check(strspn("abcba", "ab") == 2, 2); /* Partial. */
check(strspn("abc", "qx") == 0, 3); /* None. */
check(strspn("", "ab") == 0, 4); /* Null string. */
check(strspn("abc", "") == 0, 5); /* Null search list. */
/*
* strcspn
*/
it = "strcspn";
check(strcspn("abcba", "qx") == 5, 1); /* Whole string. */
check(strcspn("abcba", "cx") == 2, 2); /* Partial. */
check(strcspn("abc", "abc") == 0, 3); /* None. */
check(strcspn("", "ab") == 0, 4); /* Null string. */
check(strcspn("abc", "") == 3, 5); /* Null search list. */
/*
* strtok - the hard one
*/
it = "strtok";
(void) strcpy(one, "first, second, third");
equal(strtok(one, ", "), "first", 1); /* Basic test. */
equal(one, "first", 2);
equal(strtok((char *)NULL, ", "), "second", 3);
equal(strtok((char *)NULL, ", "), "third", 4);
check(strtok((char *)NULL, ", ") == NULL, 5);
(void) strcpy(one, ", first, ");
equal(strtok(one, ", "), "first", 6); /* Extra delims, 1 tok. */
check(strtok((char *)NULL, ", ") == NULL, 7);
(void) strcpy(one, "1a, 1b; 2a, 2b");
equal(strtok(one, ", "), "1a", 8); /* Changing delim lists. */
equal(strtok((char *)NULL, "; "), "1b", 9);
equal(strtok((char *)NULL, ", "), "2a", 10);
(void) strcpy(two, "x-y");
equal(strtok(two, "-"), "x", 11); /* New string before done. */
equal(strtok((char *)NULL, "-"), "y", 12);
check(strtok((char *)NULL, "-") == NULL, 13);
(void) strcpy(one, "a,b, c,, ,d");
equal(strtok(one, ", "), "a", 14); /* Different separators. */
equal(strtok((char *)NULL, ", "), "b", 15);
equal(strtok((char *)NULL, " ,"), "c", 16); /* Permute list too. */
equal(strtok((char *)NULL, " ,"), "d", 17);
check(strtok((char *)NULL, ", ") == NULL, 18);
check(strtok((char *)NULL, ", ") == NULL, 19); /* Persistence. */
(void) strcpy(one, ", ");
check(strtok(one, ", ") == NULL, 20); /* No tokens. */
(void) strcpy(one, "");
check(strtok(one, ", ") == NULL, 21); /* Empty string. */
(void) strcpy(one, "abc");
equal(strtok(one, ", "), "abc", 22); /* No delimiters. */
check(strtok((char *)NULL, ", ") == NULL, 23);
(void) strcpy(one, "abc");
equal(strtok(one, ""), "abc", 24); /* Empty delimiter list. */
check(strtok((char *)NULL, "") == NULL, 25);
(void) strcpy(one, "abcdefgh");
(void) strcpy(one, "a,b,c");
equal(strtok(one, ","), "a", 26); /* Basics again... */
equal(strtok((char *)NULL, ","), "b", 27);
equal(strtok((char *)NULL, ","), "c", 28);
check(strtok((char *)NULL, ",") == NULL, 29);
equal(one+6, "gh", 30); /* Stomped past end? */
equal(one, "a", 31); /* Stomped old tokens? */
equal(one+2, "b", 32);
equal(one+4, "c", 33);
/*
* memcmp
*/
it = "memcmp";
check(memcmp("a", "a", 1) == 0, 1); /* Identity. */
check(memcmp("abc", "abc", 3) == 0, 2); /* Multicharacter. */
check(memcmp("abcd", "abce", 4) < 0, 3); /* Honestly unequal. */
check(memcmp("abce", "abcd", 4) > 0, 4);
check(memcmp("alph", "beta", 4) < 0, 5);
if (charsigned) /* Sign-bit comparison. */
check(memcmp("a\203", "a\003", 2) < 0, 6);
else
check(memcmp("a\203", "a\003", 2) > 0, 6);
check(memcmp("abce", "abcd", 3) == 0, 7); /* Count limited. */
check(memcmp("abc", "def", 0) == 0, 8); /* Zero count. */
/*
* memchr
*/
it = "memchr";
check(memchr("abcd", 'z', 4) == NULL, 1); /* Not found. */
(void) strcpy(one, "abcd");
check(memchr(one, 'c', 4) == one+2, 2); /* Basic test. */
check(memchr(one, 'd', 4) == one+3, 3); /* End of string. */
check(memchr(one, 'a', 4) == one, 4); /* Beginning. */
check(memchr(one, '\0', 5) == one+4, 5); /* Finding NUL. */
(void) strcpy(one, "ababa");
check(memchr(one, 'b', 5) == one+1, 6); /* Finding first. */
check(memchr(one, 'b', 0) == NULL, 7); /* Zero count. */
check(memchr(one, 'a', 1) == one, 8); /* Singleton case. */
(void) strcpy(one, "a\203b");
check(memchr(one, 0203, 3) == one+1, 9); /* Unsignedness. */
/*
* memcpy
*
* Note that X3J11 says memcpy must work regardless of overlap.
* The SVID says it might fail.
*/
it = "memcpy";
check(memcpy(one, "abc", 4) == one, 1); /* Returned value. */
equal(one, "abc", 2); /* Did the copy go right? */
(void) strcpy(one, "abcdefgh");
(void) memcpy(one+1, "xyz", 2);
equal(one, "axydefgh", 3); /* Basic test. */
(void) strcpy(one, "abc");
(void) memcpy(one, "xyz", 0);
equal(one, "abc", 4); /* Zero-length copy. */
(void) strcpy(one, "hi there");
(void) strcpy(two, "foo");
(void) memcpy(two, one, 9);
equal(two, "hi there", 5); /* Just paranoia. */
equal(one, "hi there", 6); /* Stomped on source? */
(void) strcpy(one, "abcdefgh");
(void) memcpy(one+1, one, 9);
equal(one, "aabcdefgh", 7); /* Overlap, right-to-left. */
(void) strcpy(one, "abcdefgh");
(void) memcpy(one+1, one+2, 7);
equal(one, "acdefgh", 8); /* Overlap, left-to-right. */
(void) strcpy(one, "abcdefgh");
(void) memcpy(one, one, 9);
equal(one, "abcdefgh", 9); /* 100% overlap. */
/*
* memccpy - first test like memcpy, then the search part
*
* The SVID, the only place where memccpy is mentioned, says
* overlap might fail, so we don't try it. Besides, it's hard
* to see the rationale for a non-left-to-right memccpy.
*/
it = "memccpy";
check(memccpy(one, "abc", 'q', 4) == NULL, 1); /* Returned value. */
equal(one, "abc", 2); /* Did the copy go right? */
(void) strcpy(one, "abcdefgh");
(void) memccpy(one+1, "xyz", 'q', 2);
equal(one, "axydefgh", 3); /* Basic test. */
(void) strcpy(one, "abc");
(void) memccpy(one, "xyz", 'q', 0);
equal(one, "abc", 4); /* Zero-length copy. */
(void) strcpy(one, "hi there");
(void) strcpy(two, "foo");
(void) memccpy(two, one, 'q', 9);
equal(two, "hi there", 5); /* Just paranoia. */
equal(one, "hi there", 6); /* Stomped on source? */
(void) strcpy(one, "abcdefgh");
(void) strcpy(two, "horsefeathers");
check(memccpy(two, one, 'f', 9) == two+6, 7); /* Returned value. */
equal(one, "abcdefgh", 8); /* Source intact? */
equal(two, "abcdefeathers", 9); /* Copy correct? */
(void) strcpy(one, "abcd");
(void) strcpy(two, "bumblebee");
check(memccpy(two, one, 'a', 4) == two+1, 10); /* First char. */
equal(two, "aumblebee", 11);
check(memccpy(two, one, 'd', 4) == two+4, 12); /* Last char. */
equal(two, "abcdlebee", 13);
(void) strcpy(one, "xyz");
check(memccpy(two, one, 'x', 1) == two+1, 14); /* Singleton. */
equal(two, "xbcdlebee", 15);
/*
* memset
*/
it = "memset";
(void) strcpy(one, "abcdefgh");
check(memset(one+1, 'x', 3) == one+1, 1); /* Return value. */
equal(one, "axxxefgh", 2); /* Basic test. */
(void) memset(one+2, 'y', 0);
equal(one, "axxxefgh", 3); /* Zero-length set. */
(void) memset(one+5, 0, 1);
equal(one, "axxxe", 4); /* Zero fill. */
equal(one+6, "gh", 5); /* And the leftover. */
(void) memset(one+2, 010045, 1);
equal(one, "ax\045xe", 6); /* Unsigned char convert. */
/*
* bcopy - much like memcpy
*
* Berklix manual is silent about overlap, so don't test it.
*/
it = "bcopy";
(void) bcopy("abc", one, 4);
equal(one, "abc", 1); /* Simple copy. */
(void) strcpy(one, "abcdefgh");
(void) bcopy("xyz", one+1, 2);
equal(one, "axydefgh", 2); /* Basic test. */
(void) strcpy(one, "abc");
(void) bcopy("xyz", one, 0);
equal(one, "abc", 3); /* Zero-length copy. */
(void) strcpy(one, "hi there");
(void) strcpy(two, "foo");
(void) bcopy(one, two, 9);
equal(two, "hi there", 4); /* Just paranoia. */
equal(one, "hi there", 5); /* Stomped on source? */
/*
* bzero
*/
it = "bzero";
(void) strcpy(one, "abcdef");
bzero(one+2, 2);
equal(one, "ab", 1); /* Basic test. */
equal(one+3, "", 2);
equal(one+4, "ef", 3);
(void) strcpy(one, "abcdef");
bzero(one+2, 0);
equal(one, "abcdef", 4); /* Zero-length copy. */
/*
* bcmp - somewhat like memcmp
*/
it = "bcmp";
check(bcmp("a", "a", 1) == 0, 1); /* Identity. */
check(bcmp("abc", "abc", 3) == 0, 2); /* Multicharacter. */
check(bcmp("abcd", "abce", 4) != 0, 3); /* Honestly unequal. */
check(bcmp("abce", "abcd", 4) != 0, 4);
check(bcmp("alph", "beta", 4) != 0, 5);
check(bcmp("abce", "abcd", 3) == 0, 6); /* Count limited. */
check(bcmp("abc", "def", 0) == 0, 8); /* Zero count. */
#ifdef ERR
/*
* strerror - VERY system-dependent
*/
it = "strerror";
f = open("/", 1); /* Should always fail. */
check(f < 0 && errno > 0 && errno < sys_nerr, 1);
equal(strerror(errno), sys_errlist[errno], 2);
#ifdef UNIXERR
equal(strerror(errno), "Is a directory", 3);
#endif
#ifdef BERKERR
equal(strerror(errno), "Permission denied", 3);
#endif
#endif
}
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