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Test program for the rename() function. Supplied by Greg King - thanks!

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git-svn-id: svn://svn.cc65.org/cc65/trunk@3946 b7a2c559-68d2-44c3-8de9-860c34a00d81
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uz 2009-02-22 15:42:40 +00:00
parent 89951068dd
commit 2edab5f201
1 changed files with 115 additions and 0 deletions
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testcode/lib/rename-test.c Normal file
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/* rename-test.c
**
**
** A simple test of the rename function.
**
** 2008-10-06, Greg King
*/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
static FILE* file;
static int r;
static char name1[16], name2[16];
int main(void)
{
/* Generate two temporary file-names that have a random, unused spelling. */
_randomize();
for (;;) {
r = rand();
sprintf(name1, "r%04.4u.1", (unsigned)r);
sprintf(name2, "r%04.4u.2", (unsigned)r);
/* Ensure that neither file-name exists. */
errno = 0;
file = fopen(name1, "r");
if (file != NULL) {
fclose(file);
continue; /* try a different spelling */
}
/* Make sure that fopen() failed for the right reason. */
if (errno != ENOENT) {
perror("Disk error with first name");
return EXIT_FAILURE;
}
errno = 0;
file = fopen(name2, "r");
if (file != NULL) {
fclose(file);
continue;
}
if (errno != ENOENT) {
perror("Disk error with second name");
return EXIT_FAILURE;
}
break; /* neither one exists; do next step */
}
/* Create the first file.
** Close it without writing anything because only its name is important.
*/
printf("Creating file: %s\n", name1);
file = fopen(name1, "w");
if (file == NULL) {
_poserror("Disk error making first file");
return EXIT_FAILURE;
}
fclose(file);
/* Verify that the file-name exists now. */
file = fopen(name1, "r");
if (file == NULL) {
_poserror("Cannot find first name");
return EXIT_FAILURE;
}
fclose(file);
/* Whew! Finally, we get to the reason why this program exists:
** Confirm that the first file-name can be changed into the second
** file-name.
*/
printf("Renaming %s to %s\n", name1, name2);
r = rename(name1, name2);
if (r < 0) {
_poserror("rename() failed");
return EXIT_FAILURE;
}
/* Verify that the first file-name no longer exists. */
file = fopen(name1, "r");
if (file != NULL) {
fclose(file);
_poserror("First name still exists");
return EXIT_FAILURE;
}
/* Verify that the second file-name exists now. */
file = fopen(name2, "r");
if (file == NULL) {
_poserror("Cannot find second name");
return EXIT_FAILURE;
}
fclose(file);
printf("Success!\n");
/* Delete the second (temporary) name. */
printf("Removing %s\n", name2);
r = remove(name2);
if (r < 0) {
_poserror("remove() failed");
return EXIT_FAILURE;
}
printf("rename() passed the test.\n");
return EXIT_SUCCESS;
}