+ char filename1[] = "touch testfile1";
+ char filename2[] = "testfile2";
+ FILE * file;
+ remove( filename1 + 6 );
+ remove( filename2 );
+ /* make sure that neither file exists */
+ TESTCASE( fopen( filename1 + 6, "r" ) == NULL );
+ TESTCASE( fopen( filename2, "r" ) == NULL );
+ /* rename file 1 to file 2 - expected to fail */
+ TESTCASE( rename( filename1 + 6, filename2 ) == -1 );
+ /* create file 1 */
+ system( filename1 );
+ /* check that file 1 exists */
+ TESTCASE( ( file = fopen( filename1 + 6, "r" ) ) != NULL );
+ TESTCASE( fclose( file ) == 0 );
+ /* rename file 1 to file 2 */
+ TESTCASE( rename( filename1 + 6, filename2 ) == 0 );
+ /* check that file 2 exists, file 1 does not */
+ TESTCASE( fopen( filename1 + 6, "r" ) == NULL );
+ TESTCASE( ( file = fopen( filename2, "r" ) ) != NULL );
+ TESTCASE( fclose( file ) == 0 );
+ /* create another file 1 */
+ system( filename1 );
+ /* check that file 1 exists */
+ TESTCASE( ( file = fopen( filename1 + 6, "r" ) ) != NULL );
+ TESTCASE( fclose( file ) == 0 );
+ /* rename file 1 to file 2 - expected to fail, see comment in
+ _PDCLIB_rename() itself.
+ */
+#ifndef REGTEST
+ TESTCASE( rename( filename1 + 6, filename2 ) == -1 );
+#else
+ /* glibc rename() overwrites existing destination file. */
+ TESTCASE( rename( filename1 + 6, filename2 ) == 0 );
+#endif
+ /* remove both files */
+ remove( filename1 + 6 );
+ remove( filename2 );
+ /* check that they're gone */
+ TESTCASE( fopen( filename1 + 6, "r" ) == NULL );
+ TESTCASE( fopen( filename2, "r" ) == NULL );