esp-idf/components/vfs/test/test_vfs_append.c

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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <sys/stat.h>
#include "unity.h"
#include "esp_vfs.h"
#include "esp_vfs_fat.h"
#include "esp_spiffs.h"
#include "wear_levelling.h"
#define TEST_PARTITION_LABEL "flash_test"
#define OPEN_MODE 0
#define MSG1 "Hello"
#define MSG2 " "
#define MSG3 "world!"
static inline void test_write(int fd, const char *str, const char *msg)
{
TEST_ASSERT_EQUAL_MESSAGE(strlen(str), write(fd, str, strlen(str)), msg);
}
static inline void test_read(int fd, const char *str, const char *msg)
{
char buf[strlen(str)];
TEST_ASSERT_EQUAL_MESSAGE(strlen(str), read(fd, buf, strlen(str)), msg);
TEST_ASSERT_EQUAL_UINT8_ARRAY_MESSAGE(str, buf, strlen(str), msg);
}
static inline void test_read_fails(int fd, const char *msg)
{
char buf;
TEST_ASSERT_EQUAL_MESSAGE(0, read(fd, &buf, 1), msg);
}
static void test_append(const char *path)
{
int fd = open(path, O_RDWR | O_APPEND | O_CREAT | O_TRUNC, OPEN_MODE);
TEST_ASSERT_NOT_EQUAL(-1, fd);
test_write(fd, MSG1, "write MSG1");
test_read_fails(fd, "read fails MSG1");
lseek(fd, 0, SEEK_SET);
test_read(fd, MSG1, "read MSG1");
lseek(fd, 0, SEEK_SET);
test_write(fd, MSG2, "write MSG2");
test_read_fails(fd, "read fails MSG2"); //because write moved the pointer
lseek(fd, 0, SEEK_SET);
test_read(fd, MSG1 MSG2, "read MSG1 + MSG2");
TEST_ASSERT_NOT_EQUAL(-1, close(fd));
fd = open(path, O_RDWR | O_APPEND, OPEN_MODE);
TEST_ASSERT_NOT_EQUAL(-1, fd);
//after reopening the pointer should be at the beginning
test_read(fd, MSG1 MSG2, "read reopening");
lseek(fd, strlen(MSG1), SEEK_SET);
test_read(fd, MSG2, "read MSG2");
lseek(fd, strlen(MSG1), SEEK_SET);
test_write(fd, MSG3, "write MSG3");
test_read_fails(fd, "read fails MSG3"); //because write moved the pointer
lseek(fd, strlen(MSG1), SEEK_SET);
test_read(fd, MSG2 MSG3, "read MSG2 + MSG3");
lseek(fd, 0, SEEK_SET);
test_read(fd, MSG1 MSG2 MSG3, "read MSG1 + MSG2 + MSG3");
TEST_ASSERT_NOT_EQUAL(-1, close(fd));
TEST_ASSERT_NOT_EQUAL(-1, unlink(path));
}
TEST_CASE("open() with O_APPEND on FATFS works well", "[vfs][FATFS]")
{
wl_handle_t test_wl_handle;
esp_vfs_fat_sdmmc_mount_config_t mount_config = {
.format_if_mount_failed = true,
.max_files = 2
};
TEST_ESP_OK(esp_vfs_fat_spiflash_mount("/spiflash", NULL, &mount_config, &test_wl_handle));
test_append("/spiflash/file.txt");
TEST_ESP_OK(esp_vfs_fat_spiflash_unmount("/spiflash", test_wl_handle));
}
TEST_CASE("open() with O_APPEND on SPIFFS works well", "[vfs][spiffs]")
{
esp_vfs_spiffs_conf_t conf = {
.base_path = "/spiffs",
.partition_label = TEST_PARTITION_LABEL,
.max_files = 2,
.format_if_mount_failed = true
};
TEST_ESP_OK(esp_vfs_spiffs_register(&conf));
test_append("/spiffs/file.txt");
TEST_ESP_OK(esp_vfs_spiffs_unregister(TEST_PARTITION_LABEL));
}