tests-vfs-bind.c
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/*
* Copyright (C) 2016 Eistec AB
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @{
*
* @file
* @brief Unittests for vfs_bind
*
* @author Joakim Nohlgård <joakim.nohlgard@eistec.se>
*/
#include <errno.h>
#include <stdint.h>
#include <string.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "embUnit/embUnit.h"
#include "vfs.h"
#include "tests-vfs.h"
static const uint8_t str_data[] = "This is a test file";
/* 01234567890123456789 */
/* 0 1 */
#define _VFS_TEST_BIND_BUFSIZE 8
static ssize_t _mock_write(vfs_file_t *filp, const void *src, size_t nbytes);
static ssize_t _mock_read(vfs_file_t *filp, void *dest, size_t nbytes);
static volatile int _mock_write_calls = 0;
static volatile int _mock_read_calls = 0;
static vfs_file_ops_t _test_bind_ops = {
.read = _mock_read,
.write = _mock_write,
};
static ssize_t _mock_write(vfs_file_t *filp, const void *src, size_t nbytes)
{
void *dest = filp->private_data.ptr;
++_mock_write_calls;
if (nbytes > _VFS_TEST_BIND_BUFSIZE) {
nbytes = _VFS_TEST_BIND_BUFSIZE;
}
memcpy(dest, src, nbytes);
return nbytes;
}
static ssize_t _mock_read(vfs_file_t *filp, void *dest, size_t nbytes)
{
void *src = filp->private_data.ptr;
++_mock_read_calls;
if (nbytes > _VFS_TEST_BIND_BUFSIZE) {
nbytes = _VFS_TEST_BIND_BUFSIZE;
}
memcpy(dest, src, nbytes);
return nbytes;
}
static void test_vfs_bind(void)
{
int fd;
uint8_t buf[_VFS_TEST_BIND_BUFSIZE];
fd = vfs_bind(VFS_ANY_FD, O_RDWR, &_test_bind_ops, &buf[0]);
TEST_ASSERT(fd >= 0);
if (fd < 0) {
return;
}
ssize_t nbytes;
int ncalls = _mock_write_calls;
nbytes = vfs_write(fd, &str_data[0], sizeof(str_data));
TEST_ASSERT_EQUAL_INT(_mock_write_calls, ncalls + 1);
TEST_ASSERT_EQUAL_INT(_VFS_TEST_BIND_BUFSIZE, nbytes);
TEST_ASSERT_EQUAL_INT(0, memcmp(&str_data[0], &buf[0], nbytes));
char strbuf[64];
memset(strbuf, '\0', sizeof(strbuf));
ncalls = _mock_read_calls;
nbytes = vfs_read(fd, strbuf, sizeof(strbuf));
TEST_ASSERT_EQUAL_INT(_mock_read_calls, ncalls + 1);
TEST_ASSERT_EQUAL_INT(_VFS_TEST_BIND_BUFSIZE, nbytes);
TEST_ASSERT_EQUAL_INT(0, memcmp(&buf[0], &strbuf[0], nbytes));
int res = vfs_close(fd);
TEST_ASSERT_EQUAL_INT(0, res);
}
static void test_vfs_bind__leak_fds(void)
{
/* This test was added after a bug was discovered in the _allocate_fd code to
* make sure that fds are not leaked when doing multiple bind/close calls */
/* Try >VFS_MAX_OPEN_FILES times to open and close fds to see that they are
* not leaked */
for (unsigned int i = 0; i < VFS_MAX_OPEN_FILES; ++i) {
test_vfs_bind();
}
/* The following will fail if the fds above are not properly freed */
test_vfs_bind();
}
Test *tests_vfs_bind_tests(void)
{
EMB_UNIT_TESTFIXTURES(fixtures) {
new_TestFixture(test_vfs_bind),
new_TestFixture(test_vfs_bind__leak_fds),
};
EMB_UNIT_TESTCALLER(vfs_bind_tests, NULL, NULL, fixtures);
return (Test *)&vfs_bind_tests;
}
/** @} */