LCOV - GNU Libidn - gltests/test-getdelim.c

 Line data Source code

 1  : /* Test of getdelim() function.
 2  : Copyright (C) 2007-2020 Free Software Foundation, Inc.
 3  : 
 4  : This program is free software; you can redistribute it and/or modify
 5  : it under the terms of the GNU General Public License as published by
 6  : the Free Software Foundation; either version 3, or (at your option)
 7  : any later version.
 8  : 
 9  : This program is distributed in the hope that it will be useful,
 10  : but WITHOUT ANY WARRANTY; without even the implied warranty of
 11  : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 12  : GNU General Public License for more details.
 13  : 
 14  : You should have received a copy of the GNU General Public License
 15  : along with this program; if not, see <https://www.gnu.org/licenses/>. */
 16  : 
 17  : /* Written by Eric Blake <ebb9@byu.net>, 2007. */
 18  : 
 19  : #include <config.h>
 20  : 
 21  : #include <stdio.h>
 22  : 
 23  : #include "signature.h"
 24  : SIGNATURE_CHECK (getdelim, ssize_t, (char **, size_t *, int, FILE *));
 25  : 
 26  : #include <stdlib.h>
 27  : #include <string.h>
 28  : 
 29  : #include "macros.h"
 30  : 
 31  : int
 32  1 : main (void)
 33  : {
 34  : FILE *f;
 35  : char *line;
 36  : size_t len;
 37  : ssize_t result;
 38  : 
 39  : /* Create test file. */
 40  1 : f = fopen ("test-getdelim.txt", "wb");
 41  1 : if (!f || fwrite ("anAnbcnd0円f", 1, 10, f) != 10 || fclose (f) != 0)
 42  : {
 43  0 : fputs ("Failed to create sample file.\n", stderr);
 44  0 : remove ("test-getdelim.txt");
 45  0 : return 1;
 46  : }
 47  1 : f = fopen ("test-getdelim.txt", "rb");
 48  1 : if (!f)
 49  : {
 50  0 : fputs ("Failed to reopen sample file.\n", stderr);
 51  0 : remove ("test-getdelim.txt");
 52  0 : return 1;
 53  : }
 54  : 
 55  : /* Test initial allocation, which must include trailing NUL. */
 56  1 : line = NULL;
 57  1 : len = 0;
 58  1 : result = getdelim (&line, &len, 'n', f);
 59  1 : ASSERT (result == 2);
 60  1 : ASSERT (strcmp (line, "an") == 0);
 61  1 : ASSERT (2 < len);
 62  1 : free (line);
 63  : 
 64  : /* Test initial allocation again, with line = NULL and len != 0. */
 65  1 : line = NULL;
 66  1 : len = (size_t)(~0) / 4;
 67  1 : result = getdelim (&line, &len, 'n', f);
 68  1 : ASSERT (result == 2);
 69  1 : ASSERT (strcmp (line, "An") == 0);
 70  1 : ASSERT (2 < len);
 71  1 : free (line);
 72  : 
 73  : /* Test growth of buffer. */
 74  1 : line = malloc (1);
 75  1 : len = 1;
 76  1 : result = getdelim (&line, &len, 'n', f);
 77  1 : ASSERT (result == 3);
 78  1 : ASSERT (strcmp (line, "bcn") == 0);
 79  1 : ASSERT (3 < len);
 80  : 
 81  : /* Test embedded NULs and EOF behavior. */
 82  1 : result = getdelim (&line, &len, 'n', f);
 83  1 : ASSERT (result == 3);
 84  1 : ASSERT (memcmp (line, "d0円f", 4) == 0);
 85  1 : ASSERT (3 < len);
 86  : 
 87  1 : result = getdelim (&line, &len, 'n', f);
 88  1 : ASSERT (result == -1);
 89  : 
 90  1 : free (line);
 91  1 : fclose (f);
 92  1 : remove ("test-getdelim.txt");
 93  1 : return 0;
 94  : }