#include <gtest/gtest.h>
#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>

#include "tftp.hpp"

tftp_custom_file_t file = {
        .data = (char*)"1234567890",
        .len = 11,
        .name = (char*)"test.txt",
        .ofset = 0
    };

TEST(TFTP, custom_fseek)
{    
    tftp_custom_fseek(&file, 5, SEEK_SET);
    EXPECT_EQ(file.ofset, 5);
    tftp_custom_fseek(&file, 5, SEEK_CUR);
    EXPECT_EQ(file.ofset, 10);
}

TEST(TFTP, custom_fread)
{
    char buf[11];
    tftp_custom_fseek(&file, 0, SEEK_SET);
    size_t bytes = tftp_custom_fread(buf, 11, &file);
    EXPECT_EQ(bytes, 11);
    EXPECT_EQ(file.ofset, 11);

    memset(buf, 0, 11);

    tftp_custom_fseek(&file, 0, SEEK_SET);
    bytes = tftp_custom_fread(buf, 11, &file);
    EXPECT_EQ(bytes, 11);
    EXPECT_EQ(memcmp(buf, "1234567890", 10), 0);

    memset(buf, 0, 11);

    tftp_custom_fseek(&file, 0, SEEK_SET);
    bytes = tftp_custom_fread(buf, 5, &file);
    EXPECT_EQ(bytes, 5);
    EXPECT_EQ(memcmp(buf, "12345", 5), 0);

    memset(buf, 0, 11);

    bytes = tftp_custom_fread(buf, 5, &file);
    EXPECT_EQ(bytes, 5);
    EXPECT_EQ(memcmp(buf, "67890", 5), 0);
}