unleashed-firmware/applications/tests/rpc/rpc_test.c

#include "flipper.pb.h"
#include "furi-hal-delay.h"
#include "furi/check.h"
#include "furi/record.h"
#include "pb_decode.h"
#include "rpc/rpc_i.h"
#include "storage.pb.h"
#include "storage/storage.h"
#include <furi.h>
#include "../minunit.h"
#include <stdint.h>
#include <stream_buffer.h>
#include <pb.h>
#include <pb_encode.h>
#include <m-list.h>
#include <lib/toolbox/md5.h>

LIST_DEF(MsgList, PB_Main, M_POD_OPLIST)
#define M_OPL_MsgList_t() LIST_OPLIST(MsgList)

/* MinUnit test framework doesn't allow passing context into tests,
 * so we have to use global variables
 */
static Rpc* rpc = NULL;
static RpcSession* session = NULL;
static StreamBufferHandle_t output_stream = NULL;
static uint32_t command_id = 0;

#define TEST_RPC_TAG "TEST_RPC"
#define MAX_RECEIVE_OUTPUT_TIMEOUT 3000
#define MAX_NAME_LENGTH 255
#define MAX_DATA_SIZE 512 // have to be exact as in rpc_storage.c
#define TEST_DIR TEST_DIR_NAME "/"
#define TEST_DIR_NAME "/ext/unit_tests_tmp"
#define MD5SUM_SIZE 16

#define PING_REQUEST 0
#define PING_RESPONSE 1
#define WRITE_REQUEST 0
#define READ_RESPONSE 1

#define DEBUG_PRINT 0

#define BYTES(x) (x), sizeof(x)

static void output_bytes_callback(void* ctx, uint8_t* got_bytes, size_t got_size);
static void clean_directory(Storage* fs_api, const char* clean_dir);
static void
    test_rpc_add_empty_to_list(MsgList_t msg_list, PB_CommandStatus status, uint32_t command_id);
static void test_rpc_encode_and_feed(MsgList_t msg_list);
static void test_rpc_encode_and_feed_one(PB_Main* request);
static void test_rpc_compare_messages(PB_Main* result, PB_Main* expected);
static void test_rpc_decode_and_compare(MsgList_t expected_msg_list);
static void test_rpc_free_msg_list(MsgList_t msg_list);

static void test_rpc_storage_setup(void) {
    furi_assert(!rpc);
    furi_assert(!session);
    furi_assert(!output_stream);

    rpc = furi_record_open("rpc");
    for(int i = 0; !session && (i < 10000); ++i) {
        session = rpc_open_session(rpc);
        delay(1);
    }
    furi_assert(session);

    Storage* fs_api = furi_record_open("storage");
    clean_directory(fs_api, TEST_DIR_NAME);
    furi_record_close("storage");

    output_stream = xStreamBufferCreate(1000, 1);
    mu_assert(session, "failed to start session");
    rpc_set_send_bytes_callback(session, output_bytes_callback, output_stream);
}

static void test_rpc_storage_teardown(void) {
    Storage* fs_api = furi_record_open("storage");
    clean_directory(fs_api, TEST_DIR_NAME);
    furi_record_close("storage");

    rpc_close_session(session);
    furi_record_close("rpc");
    vStreamBufferDelete(output_stream);
    ++command_id;
    output_stream = NULL;
    rpc = NULL;
    session = NULL;
}

static void clean_directory(Storage* fs_api, const char* clean_dir) {
    furi_assert(fs_api);
    furi_assert(clean_dir);

    File* dir = storage_file_alloc(fs_api);
    if(storage_dir_open(dir, clean_dir)) {
        FileInfo fileinfo;
        char* name = furi_alloc(MAX_NAME_LENGTH + 1);
        while(storage_dir_read(dir, &fileinfo, name, MAX_NAME_LENGTH)) {
            char* fullname = furi_alloc(strlen(clean_dir) + strlen(name) + 1 + 1);
            sprintf(fullname, "%s/%s", clean_dir, name);
            if(fileinfo.flags & FSF_DIRECTORY) {
                clean_directory(fs_api, fullname);
            }
            storage_common_remove(fs_api, fullname);
            free(fullname);
        }
        free(name);
    } else {
        FS_Error error = storage_common_mkdir(fs_api, clean_dir);
        furi_assert(error == FSE_OK);
    }

    storage_dir_close(dir);
    storage_file_free(dir);
}

static void test_rpc_print_message_list(MsgList_t msg_list) {
#if DEBUG_PRINT
    MsgList_reverse(msg_list);
    for
        M_EACH(msg, msg_list, MsgList_t) {
            rpc_print_message(msg);
        }
    MsgList_reverse(msg_list);
#endif
}

static PB_CommandStatus test_rpc_storage_get_file_error(File* file) {
    FS_Error fs_error = storage_file_get_error(file);
    PB_CommandStatus pb_error;
    switch(fs_error) {
    case FSE_OK:
        pb_error = PB_CommandStatus_OK;
        break;
    case FSE_INVALID_NAME:
        pb_error = PB_CommandStatus_ERROR_STORAGE_INVALID_NAME;
        break;
    case FSE_INVALID_PARAMETER:
        pb_error = PB_CommandStatus_ERROR_STORAGE_INVALID_PARAMETER;
        break;
    case FSE_INTERNAL:
        pb_error = PB_CommandStatus_ERROR_STORAGE_INTERNAL;
        break;
    case FSE_ALREADY_OPEN:
        pb_error = PB_CommandStatus_ERROR_STORAGE_ALREADY_OPEN;
        break;
    case FSE_DENIED:
        pb_error = PB_CommandStatus_ERROR_STORAGE_DENIED;
        break;
    case FSE_EXIST:
        pb_error = PB_CommandStatus_ERROR_STORAGE_EXIST;
        break;
    case FSE_NOT_EXIST:
        pb_error = PB_CommandStatus_ERROR_STORAGE_NOT_EXIST;
        break;
    case FSE_NOT_READY:
        pb_error = PB_CommandStatus_ERROR_STORAGE_NOT_READY;
        break;
    case FSE_NOT_IMPLEMENTED:
        pb_error = PB_CommandStatus_ERROR_STORAGE_NOT_IMPLEMENTED;
        break;
    default:
        pb_error = PB_CommandStatus_ERROR;
        break;
    }

    return pb_error;
}

static void output_bytes_callback(void* ctx, uint8_t* got_bytes, size_t got_size) {
    StreamBufferHandle_t stream_buffer = ctx;

    size_t bytes_sent = xStreamBufferSend(stream_buffer, got_bytes, got_size, osWaitForever);
    furi_assert(bytes_sent == got_size);
}

static void test_rpc_add_ping_to_list(MsgList_t msg_list, bool request, uint32_t command_id) {
    PB_Main* response = MsgList_push_new(msg_list);
    response->command_id = command_id;
    response->command_status = PB_CommandStatus_OK;
    response->cb_content.funcs.encode = NULL;
    response->has_next = false;
    response->which_content = (request == PING_REQUEST) ? PB_Main_ping_request_tag :
                                                          PB_Main_ping_response_tag;
}

static void test_rpc_create_simple_message(
    PB_Main* message,
    uint16_t tag,
    const char* str,
    uint32_t command_id) {
    furi_assert(message);
    furi_assert(str);

    char* str_copy = furi_alloc(strlen(str) + 1);
    strcpy(str_copy, str);
    message->command_id = command_id;
    message->command_status = PB_CommandStatus_OK;
    message->cb_content.funcs.encode = NULL;
    message->which_content = tag;
    message->has_next = false;
    switch(tag) {
    case PB_Main_storage_list_request_tag:
        message->content.storage_list_request.path = str_copy;
        break;
    case PB_Main_storage_mkdir_request_tag:
        message->content.storage_mkdir_request.path = str_copy;
        break;
    case PB_Main_storage_read_request_tag:
        message->content.storage_read_request.path = str_copy;
        break;
    case PB_Main_storage_delete_request_tag:
        message->content.storage_delete_request.path = str_copy;
        break;
    case PB_Main_storage_md5sum_request_tag:
        message->content.storage_md5sum_request.path = str_copy;
        break;
    case PB_Main_storage_md5sum_response_tag: {
        char* md5sum = message->content.storage_md5sum_response.md5sum;
        size_t md5sum_size = sizeof(message->content.storage_md5sum_response.md5sum);
        furi_assert((strlen(str) + 1) <= md5sum_size);
        memcpy(md5sum, str_copy, md5sum_size);
        free(str_copy);
        break;
    }
    default:
        furi_assert(0);
        break;
    }
}

static void test_rpc_add_read_or_write_to_list(
    MsgList_t msg_list,
    bool write,
    const char* path,
    const uint8_t* pattern,
    size_t pattern_size,
    size_t pattern_repeats,
    uint32_t command_id) {
    furi_assert(pattern_repeats > 0);

    do {
        PB_Main* request = MsgList_push_new(msg_list);
        PB_Storage_File* msg_file = NULL;

        request->command_id = command_id;
        request->command_status = PB_CommandStatus_OK;

        if(write == WRITE_REQUEST) {
            size_t path_size = strlen(path) + 1;
            request->content.storage_write_request.path = furi_alloc(path_size);
            strncpy(request->content.storage_write_request.path, path, path_size);
            request->which_content = PB_Main_storage_write_request_tag;
            request->content.storage_write_request.has_file = true;
            msg_file = &request->content.storage_write_request.file;
        } else {
            request->which_content = PB_Main_storage_read_response_tag;
            request->content.storage_read_response.has_file = true;
            msg_file = &request->content.storage_read_response.file;
        }

        msg_file->data = furi_alloc(PB_BYTES_ARRAY_T_ALLOCSIZE(pattern_size));
        msg_file->data->size = pattern_size;

        memcpy(msg_file->data->bytes, pattern, pattern_size);

        --pattern_repeats;
        request->has_next = (pattern_repeats > 0);
    } while(pattern_repeats);
}

static void test_rpc_encode_and_feed_one(PB_Main* request) {
    furi_assert(request);

    pb_ostream_t ostream = PB_OSTREAM_SIZING;

    bool result = pb_encode_ex(&ostream, &PB_Main_msg, request, PB_ENCODE_DELIMITED);
    furi_check(result && ostream.bytes_written);

    uint8_t* buffer = furi_alloc(ostream.bytes_written);
    ostream = pb_ostream_from_buffer(buffer, ostream.bytes_written);

    pb_encode_ex(&ostream, &PB_Main_msg, request, PB_ENCODE_DELIMITED);

    size_t bytes_left = ostream.bytes_written;
    uint8_t* buffer_ptr = buffer;
    do {
        size_t bytes_sent = rpc_feed_bytes(session, buffer_ptr, bytes_left, 1000);
        mu_check(bytes_sent > 0);

        bytes_left -= bytes_sent;
        buffer_ptr += bytes_sent;
    } while(bytes_left);

    free(buffer);
    pb_release(&PB_Main_msg, request);
}

static void test_rpc_encode_and_feed(MsgList_t msg_list) {
    MsgList_reverse(msg_list);
    for
        M_EACH(request, msg_list, MsgList_t) {
            test_rpc_encode_and_feed_one(request);
        }
    MsgList_reverse(msg_list);
}

static void
    test_rpc_compare_file(PB_Storage_File* result_msg_file, PB_Storage_File* expected_msg_file) {
    mu_check(!result_msg_file->name == !expected_msg_file->name);
    if(result_msg_file->name) {
        mu_check(!strcmp(result_msg_file->name, expected_msg_file->name));
    }
    mu_check(result_msg_file->size == expected_msg_file->size);
    mu_check(result_msg_file->type == expected_msg_file->type);

    mu_check(!result_msg_file->data == !expected_msg_file->data);
    mu_check(result_msg_file->data->size == expected_msg_file->data->size);
    for(int i = 0; i < result_msg_file->data->size; ++i) {
        mu_check(result_msg_file->data->bytes[i] == expected_msg_file->data->bytes[i]);
    }
}

static void test_rpc_compare_messages(PB_Main* result, PB_Main* expected) {
    mu_check(result->command_id == expected->command_id);
    mu_check(result->command_status == expected->command_status);
    mu_check(result->has_next == expected->has_next);
    mu_check(result->which_content == expected->which_content);
    if(result->command_status != PB_CommandStatus_OK) {
        mu_check(result->which_content == PB_Main_empty_tag);
    }

    switch(result->which_content) {
    case PB_Main_empty_tag:
    case PB_Main_ping_response_tag:
        /* nothing to check */
        break;
    case PB_Main_ping_request_tag:
    case PB_Main_storage_list_request_tag:
    case PB_Main_storage_read_request_tag:
    case PB_Main_storage_write_request_tag:
    case PB_Main_storage_delete_request_tag:
    case PB_Main_storage_mkdir_request_tag:
    case PB_Main_storage_md5sum_request_tag:
        /* rpc doesn't send it */
        mu_check(0);
        break;
    case PB_Main_storage_read_response_tag: {
        bool result_has_msg_file = result->content.storage_read_response.has_file;
        bool expected_has_msg_file = expected->content.storage_read_response.has_file;
        mu_check(result_has_msg_file == expected_has_msg_file);

        if(result_has_msg_file) {
            PB_Storage_File* result_msg_file = &result->content.storage_read_response.file;
            PB_Storage_File* expected_msg_file = &expected->content.storage_read_response.file;
            test_rpc_compare_file(result_msg_file, expected_msg_file);
        } else {
            mu_check(0);
        }
    } break;
    case PB_Main_storage_list_response_tag: {
        size_t expected_msg_files = expected->content.storage_list_response.file_count;
        size_t result_msg_files = result->content.storage_list_response.file_count;
        mu_check(result_msg_files == expected_msg_files);
        for(int i = 0; i < expected_msg_files; ++i) {
            PB_Storage_File* result_msg_file = &result->content.storage_list_response.file[i];
            PB_Storage_File* expected_msg_file = &expected->content.storage_list_response.file[i];
            test_rpc_compare_file(result_msg_file, expected_msg_file);
        }
        break;
    }
    case PB_Main_storage_md5sum_response_tag: {
        char* result_md5sum = result->content.storage_md5sum_response.md5sum;
        char* expected_md5sum = expected->content.storage_md5sum_response.md5sum;
        mu_check(!strcmp(result_md5sum, expected_md5sum));
        break;
    }
    default:
        furi_assert(0);
        break;
    }
}

static bool test_rpc_pb_stream_read(pb_istream_t* istream, pb_byte_t* buf, size_t count) {
    StreamBufferHandle_t stream_buffer = istream->state;
    size_t bytes_received = 0;

    bytes_received = xStreamBufferReceive(stream_buffer, buf, count, MAX_RECEIVE_OUTPUT_TIMEOUT);
    return (count == bytes_received);
}

static void test_rpc_storage_list_create_expected_list(
    MsgList_t msg_list,
    const char* path,
    uint32_t command_id) {
    Storage* fs_api = furi_record_open("storage");
    File* dir = storage_file_alloc(fs_api);

    PB_Main response = {
        .command_id = command_id,
        .has_next = false,
        .which_content = PB_Main_storage_list_request_tag,
        /* other fields (e.g. msg_files ptrs) explicitly initialized by 0 */
    };
    PB_Storage_ListResponse* list = &response.content.storage_list_response;
    response.which_content = PB_Main_storage_list_response_tag;

    bool finish = false;
    int i = 0;

    if(storage_dir_open(dir, path)) {
        response.command_status = PB_CommandStatus_OK;
    } else {
        response.command_status = test_rpc_storage_get_file_error(dir);
        response.which_content = PB_Main_empty_tag;
        finish = true;
    }

    while(!finish) {
        FileInfo fileinfo;
        char* name = furi_alloc(MAX_NAME_LENGTH + 1);
        if(storage_dir_read(dir, &fileinfo, name, MAX_NAME_LENGTH)) {
            if(i == COUNT_OF(list->file)) {
                list->file_count = i;
                response.has_next = true;
                MsgList_push_back(msg_list, response);
                i = 0;
            }
            list->file[i].type = (fileinfo.flags & FSF_DIRECTORY) ? PB_Storage_File_FileType_DIR :
                                                                    PB_Storage_File_FileType_FILE;
            list->file[i].size = fileinfo.size;
            list->file[i].data = NULL;
            /* memory free inside rpc_encode_and_send() -> pb_release() */
            list->file[i].name = name;
            ++i;
        } else {
            finish = true;
            free(name);
        }
    }

    list->file_count = i;
    response.has_next = false;
    MsgList_push_back(msg_list, response);

    storage_dir_close(dir);
    storage_file_free(dir);

    furi_record_close("storage");
}

static void test_rpc_decode_and_compare(MsgList_t expected_msg_list) {
    furi_assert(!MsgList_empty_p(expected_msg_list));

    pb_istream_t istream = {
        .callback = test_rpc_pb_stream_read,
        .state = output_stream,
        .errmsg = NULL,
        .bytes_left = 0x7FFFFFFF,
    };
    /* other fields explicitly initialized by 0 */
    PB_Main result = {.cb_content.funcs.decode = NULL};

    /* mlib adds msg_files into start of list, so reverse it */
    MsgList_reverse(expected_msg_list);
    for
        M_EACH(expected_msg, expected_msg_list, MsgList_t) {
            if(!pb_decode_ex(&istream, &PB_Main_msg, &result, PB_DECODE_DELIMITED)) {
                mu_assert(
                    0,
                    "not all expected messages decoded (maybe increase MAX_RECEIVE_OUTPUT_TIMEOUT)");
                break;
            }

            test_rpc_compare_messages(&result, expected_msg);
            pb_release(&PB_Main_msg, &result);
        }
    MsgList_reverse(expected_msg_list);
}

static void test_rpc_free_msg_list(MsgList_t msg_list) {
    for
        M_EACH(it, msg_list, MsgList_t) {
            pb_release(&PB_Main_msg, it);
        }
    MsgList_clear(msg_list);
}

static void test_rpc_storage_list_run(const char* path, uint32_t command_id) {
    PB_Main request;
    MsgList_t expected_msg_list;
    MsgList_init(expected_msg_list);

    test_rpc_create_simple_message(&request, PB_Main_storage_list_request_tag, path, command_id);
    test_rpc_storage_list_create_expected_list(expected_msg_list, path, command_id);
    test_rpc_encode_and_feed_one(&request);
    test_rpc_decode_and_compare(expected_msg_list);

    pb_release(&PB_Main_msg, &request);
    test_rpc_free_msg_list(expected_msg_list);
}

MU_TEST(test_storage_list) {
    test_rpc_storage_list_run("/ext/nfc", ++command_id);

    test_rpc_storage_list_run("/int", ++command_id);
    test_rpc_storage_list_run("/ext", ++command_id);
    test_rpc_storage_list_run("/ext/irda", ++command_id);
    test_rpc_storage_list_run("/ext/ibutton", ++command_id);
    test_rpc_storage_list_run("/ext/lfrfid", ++command_id);
    test_rpc_storage_list_run("error_path", ++command_id);
}

static void
    test_rpc_add_empty_to_list(MsgList_t msg_list, PB_CommandStatus status, uint32_t command_id) {
    PB_Main* response = MsgList_push_new(msg_list);
    response->command_id = command_id;
    response->command_status = status;
    response->cb_content.funcs.encode = NULL;
    response->has_next = false;
    response->which_content = PB_Main_empty_tag;
}

static void test_rpc_add_read_to_list_by_reading_real_file(
    MsgList_t msg_list,
    const char* path,
    uint32_t command_id) {
    furi_assert(MsgList_empty_p(msg_list));
    Storage* fs_api = furi_record_open("storage");
    File* file = storage_file_alloc(fs_api);

    bool result = false;

    if(storage_file_open(file, path, FSAM_READ, FSOM_OPEN_EXISTING)) {
        size_t size_left = storage_file_size(file);

        do {
            PB_Main* response = MsgList_push_new(msg_list);
            response->command_id = command_id;
            response->command_status = PB_CommandStatus_OK;
            response->has_next = false;
            response->which_content = PB_Main_storage_read_response_tag;
            response->content.storage_read_response.has_file = true;

            response->content.storage_read_response.file.data =
                furi_alloc(PB_BYTES_ARRAY_T_ALLOCSIZE(MIN(size_left, MAX_DATA_SIZE)));
            uint8_t* buffer = response->content.storage_read_response.file.data->bytes;
            uint16_t* read_size_msg = &response->content.storage_read_response.file.data->size;
            size_t read_size = MIN(size_left, MAX_DATA_SIZE);
            *read_size_msg = storage_file_read(file, buffer, read_size);
            size_left -= read_size;
            result = (*read_size_msg == read_size);

            if(result) {
                response->has_next = (size_left > 0);
            }
        } while((size_left != 0) && result);

        if(!result) {
            test_rpc_add_empty_to_list(
                msg_list, test_rpc_storage_get_file_error(file), command_id);
        }
    } else {
        test_rpc_add_empty_to_list(msg_list, test_rpc_storage_get_file_error(file), command_id);
    }

    storage_file_close(file);
    storage_file_free(file);

    furi_record_close("storage");
}

static void test_storage_read_run(const char* path, uint32_t command_id) {
    PB_Main request;
    MsgList_t expected_msg_list;
    MsgList_init(expected_msg_list);

    test_rpc_add_read_to_list_by_reading_real_file(expected_msg_list, path, command_id);
    test_rpc_create_simple_message(&request, PB_Main_storage_read_request_tag, path, command_id);
    test_rpc_encode_and_feed_one(&request);
    test_rpc_decode_and_compare(expected_msg_list);

    pb_release(&PB_Main_msg, &request);
    test_rpc_free_msg_list(expected_msg_list);
}

static void test_create_dir(const char* path) {
    Storage* fs_api = furi_record_open("storage");
    FS_Error error = storage_common_mkdir(fs_api, path);
    furi_assert((error == FSE_OK) || (error == FSE_EXIST));
    furi_record_close("storage");
}

static void test_create_file(const char* path, size_t size) {
    Storage* fs_api = furi_record_open("storage");
    File* file = storage_file_alloc(fs_api);

    if(storage_file_open(file, path, FSAM_WRITE, FSOM_CREATE_ALWAYS)) {
        uint8_t buf[128] = {0};
        for(int i = 0; i < sizeof(buf); ++i) {
            buf[i] = '0' + (i % 10);
        }
        while(size) {
            size_t written = storage_file_write(file, buf, MIN(size, sizeof(buf)));
            furi_assert(written);
            size -= written;
        }
    }

    storage_file_close(file);
    storage_file_free(file);

    furi_record_close("storage");
}

MU_TEST(test_storage_read) {
    test_create_file(TEST_DIR "empty.txt", 0);
    test_create_file(TEST_DIR "file1.txt", 1);
    test_create_file(TEST_DIR "file2.txt", MAX_DATA_SIZE);
    test_create_file(TEST_DIR "file3.txt", MAX_DATA_SIZE + 1);
    test_create_file(TEST_DIR "file4.txt", (MAX_DATA_SIZE * 2) + 1);

    test_storage_read_run(TEST_DIR "empty.txt", ++command_id);
    test_storage_read_run(TEST_DIR "file1.txt", ++command_id);
    test_storage_read_run(TEST_DIR "file2.txt", ++command_id);
    test_storage_read_run(TEST_DIR "file3.txt", ++command_id);
    test_storage_read_run(TEST_DIR "file4.txt", ++command_id);
}

static void test_storage_write_run(
    const char* path,
    size_t write_size,
    size_t write_count,
    uint32_t command_id,
    PB_CommandStatus status) {
    MsgList_t input_msg_list;
    MsgList_init(input_msg_list);
    MsgList_t expected_msg_list;
    MsgList_init(expected_msg_list);

    uint8_t* buf = furi_alloc(write_size);
    for(int i = 0; i < write_size; ++i) {
        buf[i] = '0' + (i % 10);
    }

    test_rpc_add_read_or_write_to_list(
        input_msg_list, WRITE_REQUEST, path, buf, write_size, write_count, command_id);
    test_rpc_add_empty_to_list(expected_msg_list, status, command_id);
    test_rpc_encode_and_feed(input_msg_list);
    test_rpc_decode_and_compare(expected_msg_list);

    test_rpc_free_msg_list(input_msg_list);
    test_rpc_free_msg_list(expected_msg_list);

    free(buf);
}

static void test_storage_write_read_run(
    const char* path,
    const uint8_t* pattern,
    size_t pattern_size,
    size_t pattern_repeats,
    uint32_t* command_id) {
    MsgList_t input_msg_list;
    MsgList_init(input_msg_list);
    MsgList_t expected_msg_list;
    MsgList_init(expected_msg_list);

    test_rpc_add_read_or_write_to_list(
        input_msg_list, WRITE_REQUEST, path, pattern, pattern_size, pattern_repeats, ++*command_id);
    test_rpc_add_empty_to_list(expected_msg_list, PB_CommandStatus_OK, *command_id);

    test_rpc_create_simple_message(
        MsgList_push_raw(input_msg_list), PB_Main_storage_read_request_tag, path, ++*command_id);
    test_rpc_add_read_or_write_to_list(
        expected_msg_list,
        READ_RESPONSE,
        path,
        pattern,
        pattern_size,
        pattern_repeats,
        *command_id);

    test_rpc_print_message_list(input_msg_list);
    test_rpc_print_message_list(expected_msg_list);

    test_rpc_encode_and_feed(input_msg_list);
    test_rpc_decode_and_compare(expected_msg_list);

    test_rpc_free_msg_list(input_msg_list);
    test_rpc_free_msg_list(expected_msg_list);
}

MU_TEST(test_storage_write_read) {
    uint8_t pattern1[] = "abcdefgh";
    test_storage_write_read_run(TEST_DIR "test1.txt", pattern1, sizeof(pattern1), 1, &command_id);
    test_storage_write_read_run(TEST_DIR "test2.txt", pattern1, 1, 1, &command_id);
    test_storage_write_read_run(TEST_DIR "test3.txt", pattern1, 0, 1, &command_id);
}

MU_TEST(test_storage_write) {
    test_storage_write_run(
        TEST_DIR "afaefo/aefaef/aef/aef/test1.txt",
        1,
        1,
        ++command_id,
        PB_CommandStatus_ERROR_STORAGE_NOT_EXIST);
    test_storage_write_run(TEST_DIR "test1.txt", 100, 1, ++command_id, PB_CommandStatus_OK);
    test_storage_write_run(TEST_DIR "test2.txt", 100, 3, ++command_id, PB_CommandStatus_OK);
    test_storage_write_run(TEST_DIR "test1.txt", 100, 3, ++command_id, PB_CommandStatus_OK);
    test_storage_write_run(TEST_DIR "test2.txt", 100, 3, ++command_id, PB_CommandStatus_OK);
    test_storage_write_run(
        TEST_DIR "afaefo/aefaef/aef/aef/test1.txt",
        1,
        1,
        ++command_id,
        PB_CommandStatus_ERROR_STORAGE_NOT_EXIST);
    test_storage_write_run(TEST_DIR "test2.txt", 1, 50, ++command_id, PB_CommandStatus_OK);
    test_storage_write_run(TEST_DIR "test2.txt", 4096, 1, ++command_id, PB_CommandStatus_OK);
}

MU_TEST(test_storage_interrupt_continuous_same_system) {
    MsgList_t input_msg_list;
    MsgList_init(input_msg_list);
    MsgList_t expected_msg_list;
    MsgList_init(expected_msg_list);

    uint8_t pattern[16] = {0};

    test_rpc_add_read_or_write_to_list(
        input_msg_list,
        WRITE_REQUEST,
        TEST_DIR "test1.txt",
        pattern,
        sizeof(pattern),
        3,
        command_id);

    /* replace last packet (has_next == false) with another command */
    PB_Main message_to_remove;
    MsgList_pop_back(&message_to_remove, input_msg_list);
    pb_release(&PB_Main_msg, &message_to_remove);
    test_rpc_create_simple_message(
        MsgList_push_new(input_msg_list),
        PB_Main_storage_mkdir_request_tag,
        TEST_DIR "dir1",
        command_id + 1);
    test_rpc_add_read_or_write_to_list(
        input_msg_list,
        WRITE_REQUEST,
        TEST_DIR "test2.txt",
        pattern,
        sizeof(pattern),
        3,
        command_id);

    test_rpc_add_empty_to_list(
        expected_msg_list, PB_CommandStatus_ERROR_CONTINUOUS_COMMAND_INTERRUPTED, command_id);
    test_rpc_add_empty_to_list(expected_msg_list, PB_CommandStatus_OK, command_id + 1);

    test_rpc_encode_and_feed(input_msg_list);
    test_rpc_decode_and_compare(expected_msg_list);

    test_rpc_free_msg_list(input_msg_list);
    test_rpc_free_msg_list(expected_msg_list);
}

MU_TEST(test_storage_interrupt_continuous_another_system) {
    MsgList_t input_msg_list;
    MsgList_init(input_msg_list);
    MsgList_t expected_msg_list;
    MsgList_init(expected_msg_list);

    uint8_t pattern[16] = {0};

    test_rpc_add_read_or_write_to_list(
        input_msg_list,
        WRITE_REQUEST,
        TEST_DIR "test1.txt",
        pattern,
        sizeof(pattern),
        3,
        command_id);

    PB_Main message = {
        .command_id = command_id + 1,
        .command_status = PB_CommandStatus_OK,
        .cb_content.funcs.encode = NULL,
        .has_next = false,
        .which_content = PB_Main_ping_request_tag,
    };

    MsgList_it_t it;
    MsgList_it(it, input_msg_list);
    MsgList_next(it);
    MsgList_insert(input_msg_list, it, message);

    test_rpc_add_read_or_write_to_list(
        input_msg_list,
        WRITE_REQUEST,
        TEST_DIR "test2.txt",
        pattern,
        sizeof(pattern),
        3,
        command_id + 2);

    test_rpc_add_ping_to_list(expected_msg_list, PING_RESPONSE, command_id + 1);
    test_rpc_add_empty_to_list(expected_msg_list, PB_CommandStatus_OK, command_id);
    test_rpc_add_empty_to_list(expected_msg_list, PB_CommandStatus_OK, command_id + 2);

    test_rpc_encode_and_feed(input_msg_list);
    test_rpc_decode_and_compare(expected_msg_list);

    test_rpc_free_msg_list(input_msg_list);
    test_rpc_free_msg_list(expected_msg_list);
}

static void test_storage_delete_run(const char* path, size_t command_id, PB_CommandStatus status) {
    PB_Main request;
    MsgList_t expected_msg_list;
    MsgList_init(expected_msg_list);

    test_rpc_create_simple_message(&request, PB_Main_storage_delete_request_tag, path, command_id);
    test_rpc_add_empty_to_list(expected_msg_list, status, command_id);

    test_rpc_encode_and_feed_one(&request);
    test_rpc_decode_and_compare(expected_msg_list);

    pb_release(&PB_Main_msg, &request);
    test_rpc_free_msg_list(expected_msg_list);
}

MU_TEST(test_storage_delete) {
    test_create_file(TEST_DIR "empty.txt", 0);
    test_storage_delete_run(TEST_DIR "empty.txt", ++command_id, PB_CommandStatus_OK);
    test_storage_delete_run(
        TEST_DIR "empty.txt", ++command_id, PB_CommandStatus_ERROR_STORAGE_NOT_EXIST);

    test_create_dir(TEST_DIR "dir1");
    test_storage_delete_run(TEST_DIR "dir1", ++command_id, PB_CommandStatus_OK);
    test_storage_delete_run(
        TEST_DIR "dir1", ++command_id, PB_CommandStatus_ERROR_STORAGE_NOT_EXIST);
}

static void test_storage_mkdir_run(const char* path, size_t command_id, PB_CommandStatus status) {
    PB_Main request;
    MsgList_t expected_msg_list;
    MsgList_init(expected_msg_list);

    test_rpc_create_simple_message(&request, PB_Main_storage_mkdir_request_tag, path, command_id);
    test_rpc_add_empty_to_list(expected_msg_list, status, command_id);

    test_rpc_encode_and_feed_one(&request);
    test_rpc_decode_and_compare(expected_msg_list);

    pb_release(&PB_Main_msg, &request);
    test_rpc_free_msg_list(expected_msg_list);
}

MU_TEST(test_storage_mkdir) {
    test_storage_mkdir_run(TEST_DIR "dir1", ++command_id, PB_CommandStatus_OK);
    test_storage_mkdir_run(TEST_DIR "dir1", ++command_id, PB_CommandStatus_ERROR_STORAGE_EXIST);
    test_create_dir(TEST_DIR "dir2");
    test_storage_mkdir_run(TEST_DIR "dir2", ++command_id, PB_CommandStatus_ERROR_STORAGE_EXIST);

    Storage* fs_api = furi_record_open("storage");
    FS_Error error = storage_common_remove(fs_api, TEST_DIR "dir1");
    furi_assert(error == FSE_OK);
    furi_record_close("storage");

    test_storage_mkdir_run(TEST_DIR "dir1", ++command_id, PB_CommandStatus_OK);
}

static void test_storage_calculate_md5sum(const char* path, char* md5sum) {
    Storage* api = furi_record_open("storage");
    File* file = storage_file_alloc(api);

    if(storage_file_open(file, path, FSAM_READ, FSOM_OPEN_EXISTING)) {
        const uint16_t once_read_size = 512;
        const uint8_t hash_size = MD5SUM_SIZE;
        uint8_t* data = malloc(once_read_size);
        uint8_t* hash = malloc(sizeof(uint8_t) * hash_size);
        md5_context* md5_ctx = malloc(sizeof(md5_context));

        md5_starts(md5_ctx);
        while(true) {
            uint16_t read_size = storage_file_read(file, data, once_read_size);
            if(read_size == 0) break;
            md5_update(md5_ctx, data, read_size);
        }
        md5_finish(md5_ctx, hash);
        free(md5_ctx);

        for(uint8_t i = 0; i < hash_size; i++) {
            md5sum += sprintf(md5sum, "%02x", hash[i]);
        }

        free(hash);
        free(data);
    } else {
        furi_assert(0);
    }

    storage_file_close(file);
    storage_file_free(file);

    furi_record_close("storage");
}

static void test_storage_md5sum_run(
    const char* path,
    uint32_t command_id,
    const char* md5sum,
    PB_CommandStatus status) {
    PB_Main request;
    MsgList_t expected_msg_list;
    MsgList_init(expected_msg_list);

    test_rpc_create_simple_message(&request, PB_Main_storage_md5sum_request_tag, path, command_id);
    if(status == PB_CommandStatus_OK) {
        PB_Main* response = MsgList_push_new(expected_msg_list);
        test_rpc_create_simple_message(
            response, PB_Main_storage_md5sum_response_tag, md5sum, command_id);
        response->command_status = status;
    } else {
        test_rpc_add_empty_to_list(expected_msg_list, status, command_id);
    }

    test_rpc_encode_and_feed_one(&request);
    test_rpc_decode_and_compare(expected_msg_list);

    pb_release(&PB_Main_msg, &request);
    test_rpc_free_msg_list(expected_msg_list);
}

MU_TEST(test_storage_md5sum) {
    char md5sum1[MD5SUM_SIZE * 2 + 1] = {0};
    char md5sum2[MD5SUM_SIZE * 2 + 1] = {0};
    char md5sum3[MD5SUM_SIZE * 2 + 1] = {0};

    test_storage_md5sum_run(
        TEST_DIR "test1.txt", ++command_id, "", PB_CommandStatus_ERROR_STORAGE_NOT_EXIST);

    test_create_file(TEST_DIR "file1.txt", 0);
    test_create_file(TEST_DIR "file2.txt", 1);
    test_create_file(TEST_DIR "file3.txt", 512);
    test_storage_calculate_md5sum(TEST_DIR "file1.txt", md5sum1);
    test_storage_calculate_md5sum(TEST_DIR "file2.txt", md5sum2);
    test_storage_calculate_md5sum(TEST_DIR "file3.txt", md5sum3);

    test_storage_md5sum_run(TEST_DIR "file1.txt", ++command_id, md5sum1, PB_CommandStatus_OK);
    test_storage_md5sum_run(TEST_DIR "file1.txt", ++command_id, md5sum1, PB_CommandStatus_OK);

    test_storage_md5sum_run(TEST_DIR "file2.txt", ++command_id, md5sum2, PB_CommandStatus_OK);
    test_storage_md5sum_run(TEST_DIR "file2.txt", ++command_id, md5sum2, PB_CommandStatus_OK);

    test_storage_md5sum_run(TEST_DIR "file3.txt", ++command_id, md5sum3, PB_CommandStatus_OK);
    test_storage_md5sum_run(TEST_DIR "file3.txt", ++command_id, md5sum3, PB_CommandStatus_OK);

    test_storage_md5sum_run(TEST_DIR "file2.txt", ++command_id, md5sum2, PB_CommandStatus_OK);
    test_storage_md5sum_run(TEST_DIR "file3.txt", ++command_id, md5sum3, PB_CommandStatus_OK);
    test_storage_md5sum_run(TEST_DIR "file1.txt", ++command_id, md5sum1, PB_CommandStatus_OK);
    test_storage_md5sum_run(TEST_DIR "file2.txt", ++command_id, md5sum2, PB_CommandStatus_OK);
}

MU_TEST(test_ping) {
    MsgList_t input_msg_list;
    MsgList_init(input_msg_list);
    MsgList_t expected_msg_list;
    MsgList_init(expected_msg_list);

    test_rpc_add_ping_to_list(input_msg_list, PING_REQUEST, 0);
    test_rpc_add_ping_to_list(input_msg_list, PING_REQUEST, 1);
    test_rpc_add_ping_to_list(input_msg_list, PING_REQUEST, 0);
    test_rpc_add_ping_to_list(input_msg_list, PING_REQUEST, 500);
    test_rpc_add_ping_to_list(input_msg_list, PING_REQUEST, (uint32_t)-1);
    test_rpc_add_ping_to_list(input_msg_list, PING_REQUEST, 700);
    test_rpc_add_ping_to_list(input_msg_list, PING_REQUEST, 1);

    test_rpc_add_ping_to_list(expected_msg_list, PING_RESPONSE, 0);
    test_rpc_add_ping_to_list(expected_msg_list, PING_RESPONSE, 1);
    test_rpc_add_ping_to_list(expected_msg_list, PING_RESPONSE, 0);
    test_rpc_add_ping_to_list(expected_msg_list, PING_RESPONSE, 500);
    test_rpc_add_ping_to_list(expected_msg_list, PING_RESPONSE, (uint32_t)-1);
    test_rpc_add_ping_to_list(expected_msg_list, PING_RESPONSE, 700);
    test_rpc_add_ping_to_list(expected_msg_list, PING_RESPONSE, 1);

    test_rpc_encode_and_feed(input_msg_list);
    test_rpc_decode_and_compare(expected_msg_list);

    test_rpc_free_msg_list(input_msg_list);
    test_rpc_free_msg_list(expected_msg_list);
}

// TODO: 1) test for rubbish data
//       2) test for unexpected end of packet
//       3) test for one push of several packets
//       4) test for fill buffer till end (great varint) and close connection

MU_TEST_SUITE(test_rpc_status) {
    MU_SUITE_CONFIGURE(&test_rpc_storage_setup, &test_rpc_storage_teardown);

    MU_RUN_TEST(test_ping);
}

MU_TEST_SUITE(test_rpc_storage) {
    MU_SUITE_CONFIGURE(&test_rpc_storage_setup, &test_rpc_storage_teardown);

    MU_RUN_TEST(test_storage_list);
    MU_RUN_TEST(test_storage_read);
    MU_RUN_TEST(test_storage_write_read);
    MU_RUN_TEST(test_storage_write);
    MU_RUN_TEST(test_storage_delete);
    MU_RUN_TEST(test_storage_mkdir);
    MU_RUN_TEST(test_storage_md5sum);
    MU_RUN_TEST(test_storage_interrupt_continuous_same_system);
    MU_RUN_TEST(test_storage_interrupt_continuous_another_system);
}

int run_minunit_test_rpc() {
    MU_RUN_SUITE(test_rpc_storage);
    MU_RUN_SUITE(test_rpc_status);
    MU_REPORT();

    return MU_EXIT_CODE;
}