miniffs/test/file_operations.cpp

/******************************************************************************
 * MiniFFS : Mini Flat File System
 * This file is part of the test suite of MiniFFS
 *
 * Copyright (c) 2008-2022 986-Studio. All rights reserved.
 *
 ******************************************************************************/

#include <gtest/gtest.h>

#include <miniffs.h>
#include "get_fs.h"

TEST(FileOperations, OpeningAFile)
{
    miniffs_t *fs = get_fs("simple_test.mffs");

    file_t *fp = miniffs_open(fs, "HELLO.TXT");

    ASSERT_NE(fp, nullptr);
}

TEST(FileOperations, OpeningANonExistingFile)
{
    miniffs_t *fs = get_fs("simple_test.mffs");

    file_t *fp = miniffs_open(fs, "FOO.BAR");

    ASSERT_EQ(fp, nullptr);
    ASSERT_EQ(miniffs_geterror(), MINIFFS_FILE_NOT_FOUND);
}

TEST(FileOperations, UsingTheWrongNameCases)
{
    miniffs_t *fs = get_fs("simple_test.mffs");

    file_t *fp = miniffs_open(fs, "hello.txt");

    ASSERT_EQ(fp, nullptr);
    ASSERT_EQ(miniffs_geterror(), MINIFFS_FILE_NOT_FOUND);
}

TEST(FileOperations, TooLongFilename)
{
    miniffs_t *fs = get_fs("simple_test.mffs");

    file_t *fp = miniffs_open(fs, "THISisNOTaVALIDname.txt");

    ASSERT_EQ(fp, nullptr);
    ASSERT_EQ(miniffs_geterror(), MINIFFS_INVALID_NAME);
}

TEST(FileOperations, TooLongExtension)
{
    miniffs_t *fs = get_fs("simple_test.mffs");

    file_t *fp = miniffs_open(fs, "HELLO.thisIsNotValid");

    ASSERT_EQ(fp, nullptr);
    ASSERT_EQ(miniffs_geterror(), MINIFFS_INVALID_NAME);
}

TEST(FileOperations, ReadABytes)
{
    miniffs_t *fs = get_fs("simple_test.mffs");
    file_t *fp = miniffs_open(fs, "HELLO.TXT");

    ASSERT_EQ(miniffs_read(fp), 'H');
    ASSERT_EQ(miniffs_read(fp), 'e');
}

TEST(FileOperations, TestingSeek)
{
    miniffs_t *fs = get_fs("simple_test.mffs");
    file_t *fp = miniffs_open(fs, "HELLO.TXT");

    ASSERT_EQ(miniffs_read(fp), 'H');
    ASSERT_EQ(miniffs_read(fp), 'e');

    miniffs_seek(fp, 0, MFFS_SEEK_SET);

    ASSERT_EQ(miniffs_read(fp), 'H');
    ASSERT_EQ(miniffs_read(fp), 'e');

    miniffs_seek(fp, 5, MFFS_SEEK_SET);
    ASSERT_EQ(miniffs_read(fp), ' ');
    ASSERT_EQ(miniffs_read(fp), 'W');

    miniffs_seek(fp, 1, MFFS_SEEK_CUR);
    ASSERT_EQ(miniffs_read(fp), 'r');

    miniffs_seek(fp, 0, MFFS_SEEK_END);
    ASSERT_EQ(miniffs_read(fp), '!');

    miniffs_seek(fp, 1, MFFS_SEEK_END);
    ASSERT_EQ(miniffs_read(fp), 'd');
    ASSERT_EQ(miniffs_read(fp), '!');
}

TEST(FileOperations, LargeOutOfBoundarySeeks)
{
    miniffs_t *fs = get_fs("simple_test.mffs");
    file_t *fp = miniffs_open(fs, "HELLO.TXT");

    miniffs_seek(fp, 100, MFFS_SEEK_SET);
    ASSERT_EQ(miniffs_geterror(), MINIFFS_SEEK_OUT_OF_BOUNDARIES);
    ASSERT_EQ(miniffs_read(fp), '!');
    ASSERT_EQ(miniffs_geterror(), MINIFFS_END_OF_FILE);

    miniffs_seek(fp, 100, MFFS_SEEK_END);
    ASSERT_EQ(miniffs_geterror(), MINIFFS_SEEK_OUT_OF_BOUNDARIES);
    ASSERT_EQ(miniffs_read(fp), 'H');
}

TEST(FileOperations, SeekingAroundBoundaries)
{
    miniffs_t *fs = get_fs("simple_test.mffs");
    file_t *fp = miniffs_open(fs, "HELLO.TXT");

    miniffs_seek(fp, 10, MFFS_SEEK_SET);
    ASSERT_EQ(miniffs_geterror(), MINIFFS_NOERROR);
    ASSERT_EQ(miniffs_read(fp), 'd');

    miniffs_seek(fp, 11, MFFS_SEEK_SET);
    ASSERT_EQ(miniffs_geterror(), MINIFFS_NOERROR);
    ASSERT_EQ(miniffs_read(fp), '!');

    miniffs_seek(fp, 12, MFFS_SEEK_SET);
    ASSERT_EQ(miniffs_geterror(), MINIFFS_SEEK_OUT_OF_BOUNDARIES);
    ASSERT_EQ(miniffs_read(fp), '!');

    miniffs_seek(fp, 10, MFFS_SEEK_END);
    ASSERT_EQ(miniffs_geterror(), MINIFFS_NOERROR);
    ASSERT_EQ(miniffs_read(fp), 'e');

    miniffs_seek(fp, 11, MFFS_SEEK_END);
    ASSERT_EQ(miniffs_geterror(), MINIFFS_NOERROR);
    ASSERT_EQ(miniffs_read(fp), 'H');

    miniffs_seek(fp, 12, MFFS_SEEK_END);
    ASSERT_EQ(miniffs_geterror(), MINIFFS_SEEK_OUT_OF_BOUNDARIES);
    ASSERT_EQ(miniffs_read(fp), 'H');
}

TEST(FileOperations, TestingEndOfFileBoundary)
{
    miniffs_t *fs = get_fs("simple_test.mffs");
    file_t *fp = miniffs_open(fs, "HELLO.TXT");


    miniffs_seek(fp, 1, MFFS_SEEK_END);
    ASSERT_EQ(miniffs_read(fp), 'd');
    ASSERT_EQ(miniffs_read(fp), '!');
    ASSERT_EQ(miniffs_geterror(), MINIFFS_END_OF_FILE);
    ASSERT_EQ(miniffs_read(fp), '!');
    ASSERT_EQ(miniffs_geterror(), MINIFFS_END_OF_FILE);
    ASSERT_EQ(miniffs_read(fp), '!');
    ASSERT_EQ(miniffs_geterror(), MINIFFS_END_OF_FILE);
}


TEST(FileOperations, ReadBlocks) {
    miniffs_t *fs = get_fs("simple_test.mffs");
    file_t *fp = miniffs_open(fs, "HELLO.TXT");

    char buffer[13];
    int ret;

    memset(buffer, 0, 13);
    ret = miniffs_read_blocks(buffer, 4, 1, fp);
    ASSERT_EQ(ret, 1);
    ASSERT_EQ(buffer[0], 'H');
    ASSERT_EQ(buffer[1], 'e');
    ASSERT_EQ(buffer[2], 'l');
    ASSERT_EQ(buffer[3], 'l');

    memset(buffer, 0, 13);
    ret = miniffs_read_blocks(buffer, 4, 1, fp);
    ASSERT_EQ(ret, 1);
    ASSERT_EQ(buffer[0], 'o');
    ASSERT_EQ(buffer[1], ' ');
    ASSERT_EQ(buffer[2], 'W');
    ASSERT_EQ(buffer[3], 'o');
}

TEST(FileOperations, ReadMultiplesBlocks) {
    miniffs_t *fs = get_fs("simple_test.mffs");
    file_t *fp = miniffs_open(fs, "HELLO.TXT");

    char buffer[13];
    int ret;
    memset(buffer, 0, 13);
    ret = miniffs_read_blocks(buffer, 4, 2, fp);
    ASSERT_EQ(ret, 2);
    ASSERT_EQ(buffer[0], 'H');
    ASSERT_EQ(buffer[1], 'e');
    ASSERT_EQ(buffer[2], 'l');
    ASSERT_EQ(buffer[3], 'l');
    ASSERT_EQ(buffer[4], 'o');
    ASSERT_EQ(buffer[5], ' ');
    ASSERT_EQ(buffer[6], 'W');
    ASSERT_EQ(buffer[7], 'o');

    memset(buffer, 0, 13);
    miniffs_seek(fp, 0, MFFS_SEEK_SET);
    ret = miniffs_read_blocks(buffer, 4, 3, fp);
    ASSERT_EQ(ret, 3);
    ASSERT_EQ(buffer[0], 'H');
    ASSERT_EQ(buffer[1], 'e');
    ASSERT_EQ(buffer[2], 'l');
    ASSERT_EQ(buffer[3], 'l');
    ASSERT_EQ(buffer[4], 'o');
    ASSERT_EQ(buffer[5], ' ');
    ASSERT_EQ(buffer[6], 'W');
    ASSERT_EQ(buffer[7], 'o');
    ASSERT_EQ(buffer[8], 'r');
    ASSERT_EQ(buffer[9], 'l');
    ASSERT_EQ(buffer[10], 'd');
    ASSERT_EQ(buffer[11], '!');
}

TEST(FileOperations, ReadTooManyBlocks)
{
    miniffs_t *fs = get_fs("simple_test.mffs");
    file_t *fp = miniffs_open(fs, "HELLO.TXT");

    char buffer[13];
    int ret;

    memset(buffer, 0, 13);
    ret = miniffs_read_blocks(buffer, 4, 4, fp);
    ASSERT_EQ(ret, 3);
    ASSERT_EQ(buffer[0], 'H');
    ASSERT_EQ(buffer[1], 'e');
    ASSERT_EQ(buffer[2], 'l');
    ASSERT_EQ(buffer[3], 'l');
    ASSERT_EQ(buffer[4], 'o');
    ASSERT_EQ(buffer[5], ' ');
    ASSERT_EQ(buffer[6], 'W');
    ASSERT_EQ(buffer[7], 'o');
    ASSERT_EQ(buffer[8], 'r');
    ASSERT_EQ(buffer[9], 'l');
    ASSERT_EQ(buffer[10], 'd');
    ASSERT_EQ(buffer[11], '!');
}