mirror of
https://github.com/espressif/esp-idf.git
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139 lines
2.8 KiB
C
139 lines
2.8 KiB
C
/*
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* SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Unlicense OR CC0-1.0
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*/
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdio.h>
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#include "unity.h"
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#include "esp_vfs.h"
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#include "esp_vfs_null.h"
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#include "unity_test_runner.h"
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TEST_CASE("Can open and close /dev/null", "[vfs_nullfs]")
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{
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int fd = open("/dev/null", O_RDWR);
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TEST_ASSERT(fd >= 0);
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close(fd);
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}
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TEST_CASE("Can write to /dev/null", "[vfs_nullfs]")
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{
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int fd = open("/dev/null", O_RDWR);
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TEST_ASSERT(fd >= 0);
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// Can write to /dev/null
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ssize_t ret = write(fd, "hello", 5);
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TEST_ASSERT_EQUAL(5, ret);
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// Write does not change the file offset
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off_t offset = lseek(fd, 0, SEEK_CUR);
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TEST_ASSERT_EQUAL(0, offset);
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close(fd);
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}
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TEST_CASE("Can read from /dev/null", "[vfs_nullfs]")
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{
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int fd = open("/dev/null", O_RDWR);
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TEST_ASSERT(fd >= 0);
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// Can read from /dev/null
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char buf[5] = {0};
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ssize_t ret = read(fd, buf, 5);
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// Read always returns 0 bytes -> EOF
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TEST_ASSERT_EQUAL(0, ret);
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// Read does not modify the buffer
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for (int i = 0; i < 5; i++) {
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TEST_ASSERT_EQUAL(0, buf[i]);
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}
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// Read does not change the file offset
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off_t offset = lseek(fd, 0, SEEK_CUR);
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TEST_ASSERT_EQUAL(0, offset);
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close(fd);
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}
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TEST_CASE("Can lseek /dev/null", "[vfs_nullfs]")
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{
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int fd = open("/dev/null", O_RDWR);
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TEST_ASSERT(fd >= 0);
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off_t offset = lseek(fd, 0, SEEK_SET);
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TEST_ASSERT_EQUAL(0, offset);
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offset = lseek(fd, 0, SEEK_CUR);
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TEST_ASSERT_EQUAL(0, offset);
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offset = lseek(fd, 0, SEEK_END);
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TEST_ASSERT_EQUAL(0, offset);
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close(fd);
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}
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TEST_CASE("Can fstat /dev/null", "[vfs_nullfs]")
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{
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int fd = open("/dev/null", O_RDWR);
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TEST_ASSERT(fd >= 0);
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struct stat st;
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int ret = fstat(fd, &st);
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TEST_ASSERT_EQUAL(0, ret);
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TEST_ASSERT_EQUAL(0, st.st_size);
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TEST_ASSERT_EQUAL(S_IFCHR, st.st_mode & S_IFMT);
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close(fd);
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}
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TEST_CASE("Can fsync /dev/null", "[vfs_nullfs]")
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{
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int fd = open("/dev/null", O_RDWR);
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TEST_ASSERT(fd >= 0);
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int ret = fsync(fd);
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TEST_ASSERT_EQUAL(0, ret);
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close(fd);
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}
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TEST_CASE("Can pread /dev/null", "[vfs_nullfs]")
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{
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int fd = open("/dev/null", O_RDWR);
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TEST_ASSERT(fd >= 0);
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char buf[5] = {0};
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ssize_t ret = pread(fd, buf, 5, 0);
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TEST_ASSERT_EQUAL(0, ret);
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close(fd);
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}
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TEST_CASE("Can pwrite /dev/null", "[vfs_nullfs]")
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{
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int fd = open("/dev/null", O_RDWR);
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TEST_ASSERT(fd >= 0);
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ssize_t ret = pwrite(fd, "hello", 5, 0);
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TEST_ASSERT_EQUAL(5, ret);
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close(fd);
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}
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TEST_CASE("Can stat /dev/null", "[vfs_nullfs]")
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{
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struct stat st;
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int ret = stat("/dev/null", &st);
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TEST_ASSERT_EQUAL(0, ret);
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TEST_ASSERT_EQUAL(0, st.st_size);
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TEST_ASSERT_EQUAL(S_IFCHR, st.st_mode & S_IFMT);
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}
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