VFS: move tests from unit-test-app to a component test app

components/vfs/test_apps/main/test_vfs_append.c

@@ -0,0 +1,108 @@
+/*
+ * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#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_rw_wl("/spiflash", NULL, &mount_config, &test_wl_handle));
+
+    test_append("/spiflash/file.txt");
+
+    TEST_ESP_OK(esp_vfs_fat_spiflash_unmount_rw_wl("/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));
+}