#!/bin/bash
#
# s3fs - FUSE-based file system backed by Amazon S3
#
# Copyright 2007-2008 Randy Rizun <rrizun@gmail.com>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
#

set -o errexit
set -o pipefail

source test-utils.sh

function test_create_empty_file {
    describe "Testing creating an empty file ..."

    OBJECT_NAME="$(basename $PWD)/${TEST_TEXT_FILE}"

    touch ${TEST_TEXT_FILE}

    check_file_size "${TEST_TEXT_FILE}" 0

    aws_cli s3api head-object --bucket "${TEST_BUCKET_1}" --key "${OBJECT_NAME}"

    rm_test_file
}

function test_append_file {
    describe "Testing append to file ..."
    TEST_INPUT="echo ${TEST_TEXT} to ${TEST_TEXT_FILE}"

    # Write a small test file
    for x in `seq 1 $TEST_TEXT_FILE_LENGTH`
    do
        echo $TEST_INPUT
    done > ${TEST_TEXT_FILE}

    check_file_size "${TEST_TEXT_FILE}" $(($TEST_TEXT_FILE_LENGTH * $(echo $TEST_INPUT | wc -c)))

    rm_test_file
}

function test_truncate_file {
    describe "Testing truncate file ..."
    # Write a small test file
    echo "${TEST_TEXT}" > ${TEST_TEXT_FILE}

    # Truncate file to 0 length.  This should trigger open(path, O_RDWR | O_TRUNC...)
    : > ${TEST_TEXT_FILE}

    check_file_size "${TEST_TEXT_FILE}" 0

    rm_test_file
}

function test_truncate_upload {
    describe "Testing truncate file for uploading ..."

    # This file size uses multipart, mix upload when uploading.
    # We will test these cases.

    rm_test_file ${BIG_FILE}

    ${TRUNCATE_BIN} ${BIG_FILE} -s ${BIG_FILE_LENGTH}

    rm_test_file ${BIG_FILE}
}

function test_truncate_empty_file {
    describe "Testing truncate empty file ..."
    # Write an empty test file
    touch ${TEST_TEXT_FILE}

    # Truncate the file to 1024 length
    t_size=1024
    ${TRUNCATE_BIN} ${TEST_TEXT_FILE} -s $t_size

    check_file_size "${TEST_TEXT_FILE}" $t_size

    rm_test_file
}

function test_mv_file {
    describe "Testing mv file function ..."
    # if the rename file exists, delete it
    if [ -e $ALT_TEST_TEXT_FILE ]
    then
       rm $ALT_TEST_TEXT_FILE
    fi

    if [ -e $ALT_TEST_TEXT_FILE ]
    then
       echo "Could not delete file ${ALT_TEST_TEXT_FILE}, it still exists"
       return 1
    fi

    # create the test file again
    mk_test_file

    # save file length
    ALT_TEXT_LENGTH=`wc -c $TEST_TEXT_FILE | awk '{print $1}'`

    #rename the test file
    mv $TEST_TEXT_FILE $ALT_TEST_TEXT_FILE
    if [ ! -e $ALT_TEST_TEXT_FILE ]
    then
       echo "Could not move file"
       return 1
    fi
    
    #check the renamed file content-type
    if [ -f "/etc/mime.types" ]
    then
      check_content_type "$1/$ALT_TEST_TEXT_FILE" "text/plain"
    fi

    # Check the contents of the alt file
    ALT_FILE_LENGTH=`wc -c $ALT_TEST_TEXT_FILE | awk '{print $1}'`
    if [ "$ALT_FILE_LENGTH" -ne "$ALT_TEXT_LENGTH" ]
    then
       echo "moved file length is not as expected expected: $ALT_TEXT_LENGTH  got: $ALT_FILE_LENGTH"
       return 1
    fi

    # clean up
    rm_test_file $ALT_TEST_TEXT_FILE
}

function test_mv_to_exist_file {
    describe "Testing mv file to exist file function ..."

    BIG_MV_FILE_BLOCK_SIZE=$((BIG_FILE_BLOCK_SIZE + 1))

    dd if=/dev/urandom of="${BIG_FILE}" bs=${BIG_FILE_BLOCK_SIZE} count=${BIG_FILE_COUNT}
    dd if=/dev/urandom of="${BIG_FILE}-mv" bs=${BIG_MV_FILE_BLOCK_SIZE} count=${BIG_FILE_COUNT}

    mv ${BIG_FILE} ${BIG_FILE}-mv

    rm_test_file "${BIG_FILE}-mv"
}

function test_mv_empty_directory {
    describe "Testing mv directory function ..."
    if [ -e $TEST_DIR ]; then
       echo "Unexpected, this file/directory exists: ${TEST_DIR}"
       return 1
    fi

    mk_test_dir

    mv ${TEST_DIR} ${TEST_DIR}_rename
    if [ ! -d "${TEST_DIR}_rename" ]; then
       echo "Directory ${TEST_DIR} was not renamed"
       return 1
    fi

    rmdir ${TEST_DIR}_rename
    if [ -e "${TEST_DIR}_rename" ]; then
       echo "Could not remove the test directory, it still exists: ${TEST_DIR}_rename"
       return 1
    fi
}

function test_mv_nonempty_directory {
    describe "Testing mv directory function ..."
    if [ -e $TEST_DIR ]; then
       echo "Unexpected, this file/directory exists: ${TEST_DIR}"
       return 1
    fi

    mk_test_dir

    touch ${TEST_DIR}/file

    mv ${TEST_DIR} ${TEST_DIR}_rename
    if [ ! -d "${TEST_DIR}_rename" ]; then
       echo "Directory ${TEST_DIR} was not renamed"
       return 1
    fi

    rm -r ${TEST_DIR}_rename
    if [ -e "${TEST_DIR}_rename" ]; then
       echo "Could not remove the test directory, it still exists: ${TEST_DIR}_rename"
       return 1
    fi
}

function test_redirects {
    describe "Testing redirects ..."

    mk_test_file ABCDEF

    CONTENT=`cat $TEST_TEXT_FILE`

    if [ "${CONTENT}" != "ABCDEF" ]; then
       echo "CONTENT read is unexpected, got ${CONTENT}, expected ABCDEF"
       return 1
    fi

    echo XYZ > $TEST_TEXT_FILE

    CONTENT=`cat $TEST_TEXT_FILE`

    if [ ${CONTENT} != "XYZ" ]; then
       echo "CONTENT read is unexpected, got ${CONTENT}, expected XYZ"
       return 1
    fi

    echo 123456 >> $TEST_TEXT_FILE

    LINE1=`${SED_BIN} -n '1,1p' $TEST_TEXT_FILE`
    LINE2=`${SED_BIN} -n '2,2p' $TEST_TEXT_FILE`

    if [ ${LINE1} != "XYZ" ]; then
       echo "LINE1 was not as expected, got ${LINE1}, expected XYZ"
       return 1
    fi

    if [ ${LINE2} != "123456" ]; then
       echo "LINE2 was not as expected, got ${LINE2}, expected 123456"
       return 1
    fi

    # clean up
    rm_test_file
}

function test_mkdir_rmdir {
    describe "Testing creation/removal of a directory ..."

    if [ -e $TEST_DIR ]; then
       echo "Unexpected, this file/directory exists: ${TEST_DIR}"
       return 1
    fi

    mk_test_dir
    rm_test_dir
}

function test_chmod {
    describe "Testing chmod file function ..."

    # create the test file again
    mk_test_file

    ORIGINAL_PERMISSIONS=$(get_permissions $TEST_TEXT_FILE)

    chmod 777 $TEST_TEXT_FILE;

    # if they're the same, we have a problem.
    CHANGED_PERMISSIONS=$(get_permissions $TEST_TEXT_FILE)
    if [ $CHANGED_PERMISSIONS == $ORIGINAL_PERMISSIONS ]
    then
      echo "Could not modify $TEST_TEXT_FILE permissions"
      return 1
    fi

    # clean up
    rm_test_file
}

function test_chown {
    describe "Testing chown file function ..."

    # create the test file again
    mk_test_file

    if [ `uname` = "Darwin" ]; then
        ORIGINAL_PERMISSIONS=$(stat -f "%u:%g" $TEST_TEXT_FILE)
    else
        ORIGINAL_PERMISSIONS=$(stat --format=%u:%g $TEST_TEXT_FILE)
    fi

    # [NOTE]
    # Prevents test interruptions due to permission errors, etc.
    # If the chown command fails, an error will occur with the
    # following judgment statement. So skip the chown command error.
    # '|| true' was added due to a problem with Travis CI and MacOS
    # and ensure_diskfree option.
    #
    chown 1000:1000 $TEST_TEXT_FILE || true

    # if they're the same, we have a problem.
    if [ `uname` = "Darwin" ]; then
        CHANGED_PERMISSIONS=$(stat -f "%u:%g" $TEST_TEXT_FILE)
    else
        CHANGED_PERMISSIONS=$(stat --format=%u:%g $TEST_TEXT_FILE)
    fi
    if [ $CHANGED_PERMISSIONS == $ORIGINAL_PERMISSIONS ]
    then
      if [ $ORIGINAL_PERMISSIONS == "1000:1000" ]
      then
        echo "Could not be strict check because original file permission 1000:1000"
      else
        echo "Could not modify $TEST_TEXT_FILE ownership($ORIGINAL_PERMISSIONS to 1000:1000)"
        return 1
      fi
    fi

    # clean up
    rm_test_file
}

function test_list {
    describe "Testing list ..."
    mk_test_file
    mk_test_dir

    file_cnt=$(ls -1 | wc -l)
    if [ $file_cnt != 2 ]; then
        echo "Expected 2 file but got $file_cnt"
        return 1
    fi

    rm_test_file
    rm_test_dir
}

function test_remove_nonempty_directory {
    describe "Testing removing a non-empty directory ..."
    mk_test_dir
    touch "${TEST_DIR}/file"
    (
        set +o pipefail
        rmdir "${TEST_DIR}" 2>&1 | grep -q "Directory not empty"
    )
    rm "${TEST_DIR}/file"
    rm_test_dir
}

function test_external_directory_creation {
    describe "Test external directory creation ..."
    OBJECT_NAME="$(basename $PWD)/directory/${TEST_TEXT_FILE}"
    echo "data" | aws_cli s3 cp - "s3://${TEST_BUCKET_1}/${OBJECT_NAME}"
    ls | grep -q directory
    get_permissions directory | grep -q 750$
    ls directory
    cmp <(echo "data") directory/${TEST_TEXT_FILE}
    rm -f directory/${TEST_TEXT_FILE}
}

function test_external_modification {
    describe "Test external modification to an object ..."
    echo "old" > ${TEST_TEXT_FILE}
    OBJECT_NAME="$(basename $PWD)/${TEST_TEXT_FILE}"
    sleep 2
    echo "new new" | aws_cli s3 cp - "s3://${TEST_BUCKET_1}/${OBJECT_NAME}"
    cmp ${TEST_TEXT_FILE} <(echo "new new")
    rm -f ${TEST_TEXT_FILE}
}

function test_read_external_object() {
    describe "create objects via aws CLI and read via s3fs ..."
    OBJECT_NAME="$(basename $PWD)/${TEST_TEXT_FILE}"
    sleep 3
    echo "test" | aws_cli s3 cp - "s3://${TEST_BUCKET_1}/${OBJECT_NAME}"
    cmp ${TEST_TEXT_FILE} <(echo "test")
    rm -f ${TEST_TEXT_FILE}
}

function test_update_metadata_external_small_object() {
    describe "update meta to small file after created file by aws cli"

    # [NOTE]
    # Use the only filename in the test to avoid being affected by noobjcache.
    #
    TEST_FILE_EXT=`make_random_string`
    TEST_CHMOD_FILE="${TEST_TEXT_FILE}_chmod.${TEST_FILE_EXT}"
    TEST_CHOWN_FILE="${TEST_TEXT_FILE}_chown.${TEST_FILE_EXT}"
    TEST_UTIMENS_FILE="${TEST_TEXT_FILE}_utimens.${TEST_FILE_EXT}"
    TEST_SETXATTR_FILE="${TEST_TEXT_FILE}_xattr.${TEST_FILE_EXT}"
    TEST_RMXATTR_FILE="${TEST_TEXT_FILE}_xattr.${TEST_FILE_EXT}"

    TEST_INPUT="TEST_STRING_IN_SMALL_FILE"

    #
    # chmod
    #
    OBJECT_NAME="$(basename $PWD)/${TEST_CHMOD_FILE}"
    echo "${TEST_INPUT}" | aws_cli s3 cp - "s3://${TEST_BUCKET_1}/${OBJECT_NAME}"
    chmod +x ${TEST_CHMOD_FILE}
    cmp ${TEST_CHMOD_FILE} <(echo "${TEST_INPUT}")

    #
    # chown
    #
    OBJECT_NAME="$(basename $PWD)/${TEST_CHOWN_FILE}"
    echo "${TEST_INPUT}" | aws_cli s3 cp - "s3://${TEST_BUCKET_1}/${OBJECT_NAME}"
    chown $UID ${TEST_CHOWN_FILE}
    cmp ${TEST_CHOWN_FILE} <(echo "${TEST_INPUT}")

    #
    # utimens
    #
    OBJECT_NAME="$(basename $PWD)/${TEST_UTIMENS_FILE}"
    echo "${TEST_INPUT}" | aws_cli s3 cp - "s3://${TEST_BUCKET_1}/${OBJECT_NAME}"
    touch ${TEST_UTIMENS_FILE}
    cmp ${TEST_UTIMENS_FILE} <(echo "${TEST_INPUT}")

    #
    # set xattr
    #
    OBJECT_NAME="$(basename $PWD)/${TEST_SETXATTR_FILE}"
    echo "${TEST_INPUT}" | aws_cli s3 cp - "s3://${TEST_BUCKET_1}/${OBJECT_NAME}"
    set_xattr key value ${TEST_SETXATTR_FILE}
    cmp ${TEST_SETXATTR_FILE} <(echo "${TEST_INPUT}")

    #
    # remove xattr
    #
    # "%7B%22key%22%3A%22dmFsdWU%3D%22%7D" = {"key":"value"}
    #
    OBJECT_NAME="$(basename $PWD)/${TEST_RMXATTR_FILE}"
    echo "${TEST_INPUT}" | aws_cli s3 cp - "s3://${TEST_BUCKET_1}/${OBJECT_NAME}" --metadata xattr=%7B%22key%22%3A%22dmFsdWU%3D%22%7D
    del_xattr key ${TEST_RMXATTR_FILE}
    cmp ${TEST_RMXATTR_FILE} <(echo "${TEST_INPUT}")

    rm -f ${TEST_CHMOD_FILE}
    rm -f ${TEST_CHOWN_FILE}
    rm -f ${TEST_UTIMENS_FILE}
    rm -f ${TEST_SETXATTR_FILE}
    rm -f ${TEST_RMXATTR_FILE}
}

function test_update_metadata_external_large_object() {
    describe "update meta to large file after created file by aws cli"

    # [NOTE]
    # Use the only filename in the test to avoid being affected by noobjcache.
    #
    TEST_FILE_EXT=`make_random_string`
    TEST_CHMOD_FILE="${TEST_TEXT_FILE}_chmod.${TEST_FILE_EXT}"
    TEST_CHOWN_FILE="${TEST_TEXT_FILE}_chown.${TEST_FILE_EXT}"
    TEST_UTIMENS_FILE="${TEST_TEXT_FILE}_utimens.${TEST_FILE_EXT}"
    TEST_SETXATTR_FILE="${TEST_TEXT_FILE}_xattr.${TEST_FILE_EXT}"
    TEST_RMXATTR_FILE="${TEST_TEXT_FILE}_xattr.${TEST_FILE_EXT}"

    dd if=/dev/urandom of="${TEMP_DIR}/${BIG_FILE}" bs=$BIG_FILE_BLOCK_SIZE count=$BIG_FILE_COUNT

    #
    # chmod
    #
    OBJECT_NAME="$(basename $PWD)/${TEST_CHMOD_FILE}"
    aws_cli s3 cp ${TEMP_DIR}/${BIG_FILE} "s3://${TEST_BUCKET_1}/${OBJECT_NAME}" --no-progress
    chmod +x ${TEST_CHMOD_FILE}
    cmp ${TEST_CHMOD_FILE} ${TEMP_DIR}/${BIG_FILE}

    #
    # chown
    #
    OBJECT_NAME="$(basename $PWD)/${TEST_CHOWN_FILE}"
    aws_cli s3 cp ${TEMP_DIR}/${BIG_FILE} "s3://${TEST_BUCKET_1}/${OBJECT_NAME}" --no-progress
    chown $UID ${TEST_CHOWN_FILE}
    cmp ${TEST_CHOWN_FILE} ${TEMP_DIR}/${BIG_FILE}

    #
    # utimens
    #
    OBJECT_NAME="$(basename $PWD)/${TEST_UTIMENS_FILE}"
    aws_cli s3 cp ${TEMP_DIR}/${BIG_FILE} "s3://${TEST_BUCKET_1}/${OBJECT_NAME}" --no-progress
    touch ${TEST_UTIMENS_FILE}
    cmp ${TEST_UTIMENS_FILE} ${TEMP_DIR}/${BIG_FILE}

    #
    # set xattr
    #
    OBJECT_NAME="$(basename $PWD)/${TEST_SETXATTR_FILE}"
    aws_cli s3 cp ${TEMP_DIR}/${BIG_FILE} "s3://${TEST_BUCKET_1}/${OBJECT_NAME}" --no-progress
    set_xattr key value ${TEST_SETXATTR_FILE}
    cmp ${TEST_SETXATTR_FILE} ${TEMP_DIR}/${BIG_FILE}

    #
    # remove xattr
    #
    # "%7B%22key%22%3A%22dmFsdWU%3D%22%7D" = {"key":"value"}
    #
    OBJECT_NAME="$(basename $PWD)/${TEST_RMXATTR_FILE}"
    aws_cli s3 cp ${TEMP_DIR}/${BIG_FILE} "s3://${TEST_BUCKET_1}/${OBJECT_NAME}" --no-progress --metadata xattr=%7B%22key%22%3A%22dmFsdWU%3D%22%7D
    del_xattr key ${TEST_RMXATTR_FILE}
    cmp ${TEST_RMXATTR_FILE} ${TEMP_DIR}/${BIG_FILE}

    rm -f ${TEMP_DIR}/${BIG_FILE}
    rm -f ${TEST_CHMOD_FILE}
    rm -f ${TEST_CHOWN_FILE}
    rm -f ${TEST_UTIMENS_FILE}
    rm -f ${TEST_SETXATTR_FILE}
    rm -f ${TEST_RMXATTR_FILE}
}

function test_rename_before_close {
    describe "Testing rename before close ..."
    (
        echo foo
        mv $TEST_TEXT_FILE ${TEST_TEXT_FILE}.new
    ) > $TEST_TEXT_FILE

    if ! cmp <(echo foo) ${TEST_TEXT_FILE}.new; then
        echo "rename before close failed"
        return 1
    fi

    rm_test_file ${TEST_TEXT_FILE}.new
    rm -f ${TEST_TEXT_FILE}
}

function test_multipart_upload {
    describe "Testing multi-part upload ..."

    dd if=/dev/urandom of="${TEMP_DIR}/${BIG_FILE}" bs=$BIG_FILE_BLOCK_SIZE count=$BIG_FILE_COUNT
    dd if="${TEMP_DIR}/${BIG_FILE}" of="${BIG_FILE}" bs=$BIG_FILE_BLOCK_SIZE count=$BIG_FILE_COUNT

    # Verify contents of file
    echo "Comparing test file"
    if ! cmp "${TEMP_DIR}/${BIG_FILE}" "${BIG_FILE}"
    then
       return 1
    fi

    rm -f "${TEMP_DIR}/${BIG_FILE}"
    rm_test_file "${BIG_FILE}"
}

function test_multipart_copy {
    describe "Testing multi-part copy ..."

    dd if=/dev/urandom of="${TEMP_DIR}/${BIG_FILE}" bs=$BIG_FILE_BLOCK_SIZE count=$BIG_FILE_COUNT
    dd if="${TEMP_DIR}/${BIG_FILE}" of="${BIG_FILE}" bs=$BIG_FILE_BLOCK_SIZE count=$BIG_FILE_COUNT
    mv "${BIG_FILE}" "${BIG_FILE}-copy"

    # Verify contents of file
    echo "Comparing test file"
    if ! cmp "${TEMP_DIR}/${BIG_FILE}" "${BIG_FILE}-copy"
    then
       return 1
    fi

    #check the renamed file content-type
    check_content_type "$1/${BIG_FILE}-copy" "application/octet-stream"

    rm -f "${TEMP_DIR}/${BIG_FILE}"
    rm_test_file "${BIG_FILE}-copy"
}

function test_multipart_mix {
    describe "Testing multi-part mix ..."

    if [ `uname` = "Darwin" ]; then
       cat /dev/null > $BIG_FILE
    fi
    dd if=/dev/urandom of="${TEMP_DIR}/${BIG_FILE}" bs=$BIG_FILE_BLOCK_SIZE count=$BIG_FILE_COUNT
    dd if="${TEMP_DIR}/${BIG_FILE}" of="${BIG_FILE}" bs=$BIG_FILE_BLOCK_SIZE count=$BIG_FILE_COUNT

    # (1) Edit the middle of an existing file
    #     modify directly(seek 7.5MB offset)
    #     In the case of nomultipart and nocopyapi,
    #     it makes no sense, but copying files is because it leaves no cache.
    #
    cp ${TEMP_DIR}/${BIG_FILE} ${TEMP_DIR}/${BIG_FILE}-mix
    cp ${BIG_FILE} ${BIG_FILE}-mix

    MODIFY_START_BLOCK=$((15*1024*1024/2/4))
    echo -n "0123456789ABCDEF" | dd of="${BIG_FILE}-mix" bs=4 count=4 seek=$MODIFY_START_BLOCK conv=notrunc
    echo -n "0123456789ABCDEF" | dd of="${TEMP_DIR}/${BIG_FILE}-mix" bs=4 count=4 seek=$MODIFY_START_BLOCK conv=notrunc

    # Verify contents of file
    echo "Comparing test file (1)"
    if ! cmp "${TEMP_DIR}/${BIG_FILE}-mix" "${BIG_FILE}-mix"
    then
       return 1
    fi

    # (2) Write to an area larger than the size of the existing file
    #     modify directly(over file end offset)
    #
    cp ${TEMP_DIR}/${BIG_FILE} ${TEMP_DIR}/${BIG_FILE}-mix
    cp ${BIG_FILE} ${BIG_FILE}-mix

    OVER_FILE_BLOCK_POS=$((26*1024*1024/4))
    echo -n "0123456789ABCDEF" | dd of="${BIG_FILE}-mix" bs=4 count=4 seek=$OVER_FILE_BLOCK_POS conv=notrunc
    echo -n "0123456789ABCDEF" | dd of="${TEMP_DIR}/${BIG_FILE}-mix" bs=4 count=4 seek=$OVER_FILE_BLOCK_POS conv=notrunc

    # Verify contents of file
    echo "Comparing test file (2)"
    if ! cmp "${TEMP_DIR}/${BIG_FILE}-mix" "${BIG_FILE}-mix"
    then
       return 1
    fi

    # (3) Writing from the 0th byte
    #
    cp ${TEMP_DIR}/${BIG_FILE} ${TEMP_DIR}/${BIG_FILE}-mix
    cp ${BIG_FILE} ${BIG_FILE}-mix

    echo -n "0123456789ABCDEF" | dd of="${BIG_FILE}-mix" bs=4 count=4 seek=0 conv=notrunc
    echo -n "0123456789ABCDEF" | dd of="${TEMP_DIR}/${BIG_FILE}-mix" bs=4 count=4 seek=0 conv=notrunc

    # Verify contents of file
    echo "Comparing test file (3)"
    if ! cmp "${TEMP_DIR}/${BIG_FILE}-mix" "${BIG_FILE}-mix"
    then
       return 1
    fi

    # (4) Write to the area within 5MB from the top
    #     modify directly(seek 1MB offset)
    #
    cp ${TEMP_DIR}/${BIG_FILE} ${TEMP_DIR}/${BIG_FILE}-mix
    cp ${BIG_FILE} ${BIG_FILE}-mix

    MODIFY_START_BLOCK=$((1*1024*1024))
    echo -n "0123456789ABCDEF" | dd of="${BIG_FILE}-mix" bs=4 count=4 seek=$MODIFY_START_BLOCK conv=notrunc
    echo -n "0123456789ABCDEF" | dd of="${TEMP_DIR}/${BIG_FILE}-mix" bs=4 count=4 seek=$MODIFY_START_BLOCK conv=notrunc

    # Verify contents of file
    echo "Comparing test file (4)"
    if ! cmp "${TEMP_DIR}/${BIG_FILE}-mix" "${BIG_FILE}-mix"
    then
       return 1
    fi

    rm -f "${TEMP_DIR}/${BIG_FILE}"
    rm -f "${TEMP_DIR}/${BIG_FILE}-mix"
    rm_test_file "${BIG_FILE}"
    rm_test_file "${BIG_FILE}-mix"
}

function test_utimens_during_multipart {
    describe "Testing utimens calling during multipart copy ..."

    dd if=/dev/urandom of="${TEMP_DIR}/${BIG_FILE}" bs=$BIG_FILE_BLOCK_SIZE count=$BIG_FILE_COUNT

    cp ${TEMP_DIR}/${BIG_FILE} ${BIG_FILE}

    # The second copy of the "-p" option calls utimens during multipart upload.
    cp -p ${TEMP_DIR}/${BIG_FILE} ${BIG_FILE}

    rm -f "${TEMP_DIR}/${BIG_FILE}"
    rm_test_file "${BIG_FILE}"
}

function test_special_characters {
    describe "Testing special characters ..."

    (
        set +o pipefail
        ls 'special' 2>&1 | grep -q 'No such file or directory'
        ls 'special?' 2>&1 | grep -q 'No such file or directory'
        ls 'special*' 2>&1 | grep -q 'No such file or directory'
        ls 'special~' 2>&1 | grep -q 'No such file or directory'
        ls 'specialµ' 2>&1 | grep -q 'No such file or directory'
    )

    mkdir "TOYOTA TRUCK 8.2.2"
    rm -rf "TOYOTA TRUCK 8.2.2"
}

function test_hardlink {
    describe "Testing hardlinks ..."

    rm -f $TEST_TEXT_FILE
    rm -f $ALT_TEST_TEXT_FILE
    echo foo > $TEST_TEXT_FILE

    (
        set +o pipefail
        ln $TEST_TEXT_FILE $ALT_TEST_TEXT_FILE 2>&1 | grep -q 'Operation not supported'
    )

    rm_test_file
    rm_test_file $ALT_TEST_TEXT_FILE
}

function test_symlink {
    describe "Testing symlinks ..."

    rm -f $TEST_TEXT_FILE
    rm -f $ALT_TEST_TEXT_FILE
    echo foo > $TEST_TEXT_FILE

    ln -s $TEST_TEXT_FILE $ALT_TEST_TEXT_FILE
    cmp $TEST_TEXT_FILE $ALT_TEST_TEXT_FILE

    rm -f $TEST_TEXT_FILE

    [ -L $ALT_TEST_TEXT_FILE ]
    [ ! -f $ALT_TEST_TEXT_FILE ]

    rm -f $ALT_TEST_TEXT_FILE
}

function test_extended_attributes {
    describe "Testing extended attributes ..."

    rm -f $TEST_TEXT_FILE
    touch $TEST_TEXT_FILE

    # set value
    set_xattr key1 value1 $TEST_TEXT_FILE
    get_xattr key1 $TEST_TEXT_FILE | grep -q '^value1$'

    # append value
    set_xattr key2 value2 $TEST_TEXT_FILE
    get_xattr key1 $TEST_TEXT_FILE | grep -q '^value1$'
    get_xattr key2 $TEST_TEXT_FILE | grep -q '^value2$'

    # remove value
    del_xattr key1 $TEST_TEXT_FILE
    ! get_xattr key1 $TEST_TEXT_FILE
    get_xattr key2 $TEST_TEXT_FILE | grep -q '^value2$'

    rm_test_file
}

function test_mtime_file {
    describe "Testing mtime preservation function ..."

    # if the rename file exists, delete it
    if [ -e $ALT_TEST_TEXT_FILE -o -L $ALT_TEST_TEXT_FILE ]
    then
       rm $ALT_TEST_TEXT_FILE
    fi

    if [ -e $ALT_TEST_TEXT_FILE ]
    then
       echo "Could not delete file ${ALT_TEST_TEXT_FILE}, it still exists"
       return 1
    fi

    # create the test file again
    mk_test_file
    sleep 2 # allow for some time to pass to compare the timestamps between test & alt

    #copy the test file with preserve mode
    cp -p $TEST_TEXT_FILE $ALT_TEST_TEXT_FILE
    testmtime=`get_mtime $TEST_TEXT_FILE`
    altmtime=`get_mtime $ALT_TEST_TEXT_FILE`
    if [ "$testmtime" -ne "$altmtime" ]
    then
       echo "File times do not match:  $testmtime != $altmtime"
       return 1
    fi

    rm_test_file
    rm_test_file $ALT_TEST_TEXT_FILE
}

# [NOTE]
# If it mounted with relatime or noatime options , the "touch -a"
# command may not update the atime.
# In ubuntu:xenial, atime was updated even if relatime was granted.
# However, it was not updated in bionic/focal.
# We can probably update atime by explicitly specifying the strictatime
# option and running the "touch -a" command. However, the strictatime
# option cannot be set.
# Therefore, if the relatime option is set, the test with the "touch -a"
# command is bypassed.
# We do not know why atime is not updated may or not be affected by
# these options.(can't say for sure)
# However, if atime has not been updated, the s3fs_utimens entry point
# will not be called from FUSE library. We added this bypass because
# the test became unstable.
#
function test_update_time() {
    describe "Testing update time function ..."

    #
    # create the test
    #
    mk_test_file
    base_atime=`get_atime $TEST_TEXT_FILE`
    base_ctime=`get_ctime $TEST_TEXT_FILE`
    base_mtime=`get_mtime $TEST_TEXT_FILE`
    sleep 2

    #
    # chmod -> update only ctime
    #
    chmod +x $TEST_TEXT_FILE
    atime=`get_atime $TEST_TEXT_FILE`
    ctime=`get_ctime $TEST_TEXT_FILE`
    mtime=`get_mtime $TEST_TEXT_FILE`
    if [ $base_atime -ne $atime -o $base_ctime -eq $ctime -o $base_mtime -ne $mtime ]; then
       echo "chmod expected updated ctime: $base_ctime != $ctime and same mtime: $base_mtime == $mtime, atime: $base_atime == $atime"
       return 1
    fi
    base_ctime=$ctime
    sleep 2

    #
    # chown -> update only ctime
    #
    chown $UID $TEST_TEXT_FILE
    atime=`get_atime $TEST_TEXT_FILE`
    ctime=`get_ctime $TEST_TEXT_FILE`
    mtime=`get_mtime $TEST_TEXT_FILE`
    if [ $base_atime -ne $atime -o $base_ctime -eq $ctime -o $base_mtime -ne $mtime ]; then
       echo "chown expected updated ctime: $base_ctime != $ctime and same mtime: $base_mtime == $mtime, atime: $base_atime == $atime"
       return 1
    fi
    base_ctime=$ctime
    sleep 2

    #
    # set_xattr -> update only ctime
    #
    set_xattr key value $TEST_TEXT_FILE
    atime=`get_atime $TEST_TEXT_FILE`
    ctime=`get_ctime $TEST_TEXT_FILE`
    mtime=`get_mtime $TEST_TEXT_FILE`
    if [ $base_atime -ne $atime -o $base_ctime -eq $ctime -o $base_mtime -ne $mtime ]; then
       echo "set_xattr expected updated ctime: $base_ctime != $ctime and same mtime: $base_mtime == $mtime, atime: $base_atime == $atime"
       return 1
    fi
    base_ctime=$ctime
    sleep 2

    #
    # touch -> update ctime/atime/mtime
    #
    touch $TEST_TEXT_FILE
    atime=`get_atime $TEST_TEXT_FILE`
    ctime=`get_ctime $TEST_TEXT_FILE`
    mtime=`get_mtime $TEST_TEXT_FILE`
    if [ $base_atime -eq $atime -o $base_ctime -eq $ctime -o $base_mtime -eq $mtime ]; then
       echo "touch expected updated ctime: $base_ctime != $ctime, mtime: $base_mtime != $mtime, atime: $base_atime != $atime"
       return 1
    fi
    base_atime=$atime
    base_mtime=$mtime
    base_ctime=$ctime
    sleep 2

    #
    # "touch -a" -> update ctime/atime, not update mtime
    #
    if ! cat /proc/mounts | grep "^s3fs " | grep "$TEST_BUCKET_MOUNT_POINT_1 " | grep -e noatime -e relatime >/dev/null; then
        touch -a $TEST_TEXT_FILE
        atime=`get_atime $TEST_TEXT_FILE`
        ctime=`get_ctime $TEST_TEXT_FILE`
        mtime=`get_mtime $TEST_TEXT_FILE`
        if [ $base_atime -eq $atime -o $base_ctime -eq $ctime -o $base_mtime -ne $mtime ]; then
           echo "touch with -a option expected updated ctime: $base_ctime != $ctime, atime: $base_atime != $atime and same mtime: $base_mtime == $mtime"
           return 1
        fi
        base_atime=$atime
        base_ctime=$ctime
        sleep 2
    fi

    #
    # append -> update ctime/mtime, not update atime
    #
    echo foo >> $TEST_TEXT_FILE
    atime=`get_atime $TEST_TEXT_FILE`
    ctime=`get_ctime $TEST_TEXT_FILE`
    mtime=`get_mtime $TEST_TEXT_FILE`
    if [ $base_atime -ne $atime -o $base_ctime -eq $ctime -o $base_mtime -eq $mtime ]; then
       echo "append expected updated ctime: $base_ctime != $ctime, mtime: $base_mtime != $mtime and same atime: $base_atime == $atime"
       return 1
    fi
    base_mtime=$mtime
    base_ctime=$ctime
    sleep 2

    #
    # cp -p -> update ctime, not update atime/mtime
    #
    TIME_TEST_TEXT_FILE=test-s3fs-time.txt
    cp -p $TEST_TEXT_FILE $TIME_TEST_TEXT_FILE
    atime=`get_atime $TIME_TEST_TEXT_FILE`
    ctime=`get_ctime $TIME_TEST_TEXT_FILE`
    mtime=`get_mtime $TIME_TEST_TEXT_FILE`
    if [ $base_atime -ne $atime -o $base_ctime -eq $ctime -o $base_mtime -ne $mtime ]; then
       echo "cp with -p option expected updated ctime: $base_ctime != $ctime and same mtime: $base_mtime == $mtime, atime: $base_atime == $atime"
       return 1
    fi
    sleep 2

    #
    # mv -> update ctime, not update atime/mtime
    #
    TIME2_TEST_TEXT_FILE=test-s3fs-time2.txt
    mv $TEST_TEXT_FILE $TIME2_TEST_TEXT_FILE
    atime=`get_atime $TIME2_TEST_TEXT_FILE`
    ctime=`get_ctime $TIME2_TEST_TEXT_FILE`
    mtime=`get_mtime $TIME2_TEST_TEXT_FILE`
    if [ $base_atime -ne $atime -o $base_ctime -eq $ctime -o $base_mtime -ne $mtime ]; then
       echo "mv expected updated ctime: $base_ctime != $ctime and same mtime: $base_mtime == $mtime, atime: $base_atime == $atime"
       return 1
    fi

    rm_test_file $TIME_TEST_TEXT_FILE
    rm_test_file $TIME2_TEST_TEXT_FILE
}

# [NOTE]
# See the description of test_update_time () for notes about the
# "touch -a" command and atime.
#
function test_update_directory_time() {
    describe "Testing update time for directory function ..."

    #
    # create the directory and sub-directory and a file in directory
    #
    TIME_TEST_SUBDIR="$TEST_DIR/testsubdir"
    TIME_TEST_FILE_INDIR="$TEST_DIR/testfile"
    mk_test_dir
    mkdir $TIME_TEST_SUBDIR
    touch $TIME_TEST_FILE_INDIR

    base_atime=`get_atime $TEST_DIR`
    base_ctime=`get_ctime $TEST_DIR`
    base_mtime=`get_mtime $TEST_DIR`
    subdir_atime=`get_atime $TIME_TEST_SUBDIR`
    subdir_ctime=`get_ctime $TIME_TEST_SUBDIR`
    subdir_mtime=`get_mtime $TIME_TEST_SUBDIR`
    subfile_atime=`get_atime $TIME_TEST_FILE_INDIR`
    subfile_ctime=`get_ctime $TIME_TEST_FILE_INDIR`
    subfile_mtime=`get_mtime $TIME_TEST_FILE_INDIR`
    sleep 2

    #
    # chmod -> update only ctime
    #
    chmod 0777 $TEST_DIR
    atime=`get_atime $TEST_DIR`
    ctime=`get_ctime $TEST_DIR`
    mtime=`get_mtime $TEST_DIR`
    if [ $base_atime -ne $atime -o $base_ctime -eq $ctime -o $base_mtime -ne $mtime ]; then
       echo "chmod expected updated ctime: $base_ctime != $ctime and same mtime: $base_mtime == $mtime, atime: $base_atime == $atime"
       return 1
    fi
    base_ctime=$ctime
    sleep 2

    #
    # chown -> update only ctime
    #
    chown $UID $TEST_DIR
    atime=`get_atime $TEST_DIR`
    ctime=`get_ctime $TEST_DIR`
    mtime=`get_mtime $TEST_DIR`
    if [ $base_atime -ne $atime -o $base_ctime -eq $ctime -o $base_mtime -ne $mtime ]; then
       echo "chown expected updated ctime: $base_ctime != $ctime and same mtime: $base_mtime == $mtime, atime: $base_atime == $atime"
       return 1
    fi
    base_ctime=$ctime
    sleep 2

    #
    # set_xattr -> update only ctime
    #
    set_xattr key value $TEST_DIR
    atime=`get_atime $TEST_DIR`
    ctime=`get_ctime $TEST_DIR`
    mtime=`get_mtime $TEST_DIR`
    if [ $base_atime -ne $atime -o $base_ctime -eq $ctime -o $base_mtime -ne $mtime ]; then
       echo "set_xattr expected updated ctime: $base_ctime != $ctime and same mtime: $base_mtime == $mtime, atime: $base_atime == $atime"
       return 1
    fi
    base_ctime=$ctime
    sleep 2

    #
    # touch -> update ctime/atime/mtime
    #
    touch $TEST_DIR
    atime=`get_atime $TEST_DIR`
    ctime=`get_ctime $TEST_DIR`
    mtime=`get_mtime $TEST_DIR`
    if [ $base_atime -eq $atime -o $base_ctime -eq $ctime -o $base_mtime -eq $mtime ]; then
       echo "touch expected updated ctime: $base_ctime != $ctime, mtime: $base_mtime != $mtime, atime: $base_atime != $atime"
       return 1
    fi
    base_atime=$atime
    base_mtime=$mtime
    base_ctime=$ctime
    sleep 2

    #
    # "touch -a" -> update ctime/atime, not update mtime
    #
    if ! cat /proc/mounts | grep "^s3fs " | grep "$TEST_BUCKET_MOUNT_POINT_1 " | grep -e noatime -e relatime >/dev/null; then
        touch -a $TEST_DIR
        atime=`get_atime $TEST_DIR`
        ctime=`get_ctime $TEST_DIR`
        mtime=`get_mtime $TEST_DIR`
        if [ $base_atime -eq $atime -o $base_ctime -eq $ctime -o $base_mtime -ne $mtime ]; then
           echo "touch with -a option expected updated ctime: $base_ctime != $ctime, atime: $base_atime != $atime and same mtime: $base_mtime == $mtime"
           return 1
        fi
        base_atime=$atime
        base_ctime=$ctime
        sleep 2
    fi

    #
    # mv -> update ctime, not update atime/mtime for target directory
    #       not update any for sub-directory and a file
    #
    TIME_TEST_DIR=timetestdir
    TIME2_TEST_SUBDIR="$TIME_TEST_DIR/testsubdir"
    TIME2_TEST_FILE_INDIR="$TIME_TEST_DIR/testfile"
    mv $TEST_DIR $TIME_TEST_DIR
    atime=`get_atime $TIME_TEST_DIR`
    ctime=`get_ctime $TIME_TEST_DIR`
    mtime=`get_mtime $TIME_TEST_DIR`
    if [ $base_atime -ne $atime -o $base_ctime -eq $ctime -o $base_mtime -ne $mtime ]; then
       echo "mv expected updated ctime: $base_ctime != $ctime and same mtime: $base_mtime == $mtime, atime: $base_atime == $atime"
       return 1
    fi
    atime=`get_atime $TIME2_TEST_SUBDIR`
    ctime=`get_ctime $TIME2_TEST_SUBDIR`
    mtime=`get_mtime $TIME2_TEST_SUBDIR`
    if [ $subdir_atime -ne $atime -o $subdir_ctime -ne $ctime -o $subdir_mtime -ne $mtime ]; then
       echo "mv for sub-directory expected same ctime: $subdir_ctime == $ctime, mtime: $subdir_mtime == $mtime, atime: $subdir_atime == $atime"
       return 1
    fi
    atime=`get_atime $TIME2_TEST_FILE_INDIR`
    ctime=`get_ctime $TIME2_TEST_FILE_INDIR`
    mtime=`get_mtime $TIME2_TEST_FILE_INDIR`
    if [ $subfile_atime -ne $atime -o $subfile_ctime -ne $ctime -o $subfile_mtime -ne $mtime ]; then
       echo "mv for a file in directory expected same ctime: $subfile_ctime == $ctime, mtime: $subfile_mtime == $mtime, atime: $subfile_atime == $atime"
       return 1
    fi

    rm -rf $TIME_TEST_SUBDIR
    rm -rf $TIME_TEST_DIR
}

function test_rm_rf_dir {
   describe "Test that rm -rf will remove directory with contents ..."
   # Create a dir with some files and directories
   mkdir dir1
   mkdir dir1/dir2
   touch dir1/file1
   touch dir1/dir2/file2

   # Remove the dir with recursive rm
   rm -rf dir1

   if [ -e dir1 ]; then
       echo "rm -rf did not remove $PWD/dir1"
       return 1
   fi
}

function test_copy_file {
   describe "Test simple copy ..."

   dd if=/dev/urandom of=/tmp/simple_file bs=1024 count=1
   cp /tmp/simple_file copied_simple_file
   cmp /tmp/simple_file copied_simple_file

   rm_test_file /tmp/simple_file
   rm_test_file copied_simple_file
}

function test_write_after_seek_ahead {
   describe "Test writes succeed after a seek ahead ..."
   dd if=/dev/zero of=testfile seek=1 count=1 bs=1024
   rm_test_file testfile
}

function test_overwrite_existing_file_range {
    describe "Test overwrite range succeeds ..."
    dd if=<(seq 1000) of=${TEST_TEXT_FILE}
    dd if=/dev/zero of=${TEST_TEXT_FILE} seek=1 count=1 bs=1024 conv=notrunc
    cmp ${TEST_TEXT_FILE} <(
        seq 1000 | head -c 1024
        dd if=/dev/zero count=1 bs=1024
        seq 1000 | tail -c +2049
    )
    rm_test_file
}

function test_concurrent_directory_updates {
    describe "Test concurrent updates to a directory ..."
    for i in `seq 5`; do echo foo > $i; done
    for process in `seq 10`; do
        for i in `seq 5`; do
            file=$(ls `seq 5` | ${SED_BIN} -n "$(($RANDOM % 5 + 1))p")
            cat $file >/dev/null || true
            rm -f $file
            echo foo > $file || true
        done &
    done
    wait
    rm -f `seq 5`
}

function test_concurrent_reads {
    describe "Test concurrent reads from a file ..."
    dd if=/dev/urandom of="${TEST_TEXT_FILE}" bs=$BIG_FILE_BLOCK_SIZE count=$BIG_FILE_COUNT
    for process in `seq 10`; do
        dd if=${TEST_TEXT_FILE} of=/dev/null seek=$(($RANDOM % $BIG_FILE_LENGTH)) count=16 bs=1024 &
    done
    wait
    rm_test_file
}

function test_concurrent_writes {
    describe "Test concurrent writes to a file ..."
    dd if=/dev/urandom of="${TEST_TEXT_FILE}" bs=$BIG_FILE_BLOCK_SIZE count=$BIG_FILE_COUNT
    for process in `seq 10`; do
        dd if=/dev/zero of=${TEST_TEXT_FILE} seek=$(($RANDOM % $BIG_FILE_LENGTH)) count=16 bs=1024 conv=notrunc &
    done
    wait
    rm_test_file
}

function test_open_second_fd {
    describe "read from an open fd ..."
    rm_test_file second_fd_file
    RESULT=$( (echo foo ; wc -c < second_fd_file >&2) 2>& 1>second_fd_file)
    if [ "$RESULT" -ne 4 ]; then
        echo "size mismatch, expected: 4, was: ${RESULT}"
        return 1
    fi
    rm_test_file second_fd_file
}

function test_write_multiple_offsets {
    describe "test writing to multiple offsets ..."
    ../../write_multiple_offsets.py ${TEST_TEXT_FILE} 1024 1 $((16 * 1024 * 1024)) 1 $((18 * 1024 * 1024)) 1
    rm_test_file ${TEST_TEXT_FILE}
}

function test_write_multiple_offsets_backwards {
    describe "test writing to multiple offsets ..."
    ../../write_multiple_offsets.py ${TEST_TEXT_FILE} $((20 * 1024 * 1024 + 1)) 1 $((10 * 1024 * 1024)) 1
    rm_test_file ${TEST_TEXT_FILE}
}

function test_clean_up_cache() {
    describe "Test clean up cache ..."

    dir="many_files"
    count=25
    mkdir -p $dir

    for x in $(seq $count); do
        dd if=/dev/urandom of=$dir/file-$x bs=10485760 count=1
    done

    file_cnt=$(ls $dir | wc -l)
    if [ $file_cnt != $count ]; then
        echo "Expected $count files but got $file_cnt"
        rm -rf $dir
        return 1
    fi
    CACHE_DISK_AVAIL_SIZE=`get_disk_avail_size $CACHE_DIR`
    if [ "$CACHE_DISK_AVAIL_SIZE" -lt "$ENSURE_DISKFREE_SIZE" ];then
        echo "Cache disk avail size:$CACHE_DISK_AVAIL_SIZE less than ensure_diskfree size:$ENSURE_DISKFREE_SIZE"
        rm -rf $dir
        return 1
    fi
    rm -rf $dir
}

function test_content_type() {
    describe "Test Content-Type detection ..."

    DIR_NAME="$(basename $PWD)"

    touch "test.txt"
    CONTENT_TYPE=$(aws_cli s3api head-object --bucket "${TEST_BUCKET_1}" --key "${DIR_NAME}/test.txt" | grep "ContentType")
    if ! echo $CONTENT_TYPE | grep -q "text/plain"; then
        echo "Unexpected Content-Type: $CONTENT_TYPE"
        return 1;
    fi

    touch "test.jpg"
    CONTENT_TYPE=$(aws_cli s3api head-object --bucket "${TEST_BUCKET_1}" --key "${DIR_NAME}/test.jpg" | grep "ContentType")
    if ! echo $CONTENT_TYPE | grep -q "image/jpeg"; then
        echo "Unexpected Content-Type: $CONTENT_TYPE"
        return 1;
    fi

    touch "test.bin"
    CONTENT_TYPE=$(aws_cli s3api head-object --bucket "${TEST_BUCKET_1}" --key "${DIR_NAME}/test.bin" | grep "ContentType")
    if ! echo $CONTENT_TYPE | grep -q "application/octet-stream"; then
        echo "Unexpected Content-Type: $CONTENT_TYPE"
        return 1;
    fi

    mkdir "test.dir"
    CONTENT_TYPE=$(aws_cli s3api head-object --bucket "${TEST_BUCKET_1}" --key "${DIR_NAME}/test.dir/" | grep "ContentType")
    if ! echo $CONTENT_TYPE | grep -q "application/x-directory"; then
        echo "Unexpected Content-Type: $CONTENT_TYPE"
        return 1;
    fi

    rm -f test.txt
    rm -f test.jpg
    rm -f test.bin
    rm -rf test.dir
}

# create more files than -o max_stat_cache_size
function test_truncate_cache() {
    describe "Test make cache files over max cache file size ..."

    for dir in $(seq 2); do
        mkdir $dir
        for file in $(seq 75); do
            touch $dir/$file
        done
        ls $dir
    done

    rm -rf `seq 2`
}

function test_cache_file_stat() {
    describe "Test cache file stat ..."

    dd if=/dev/urandom of="${BIG_FILE}" bs=$BIG_FILE_BLOCK_SIZE count=$BIG_FILE_COUNT

    #
    # get "testrun-xxx" directory name
    #
    CACHE_TESTRUN_DIR=$(ls -1 ${CACHE_DIR}/${TEST_BUCKET_1}/ 2>/dev/null | grep testrun 2>/dev/null)

    #
    # get cache file inode number
    #
    CACHE_FILE_INODE=$(ls -i ${CACHE_DIR}/${TEST_BUCKET_1}/${CACHE_TESTRUN_DIR}/${BIG_FILE} 2>/dev/null | awk '{print $1}')
    if [ -z ${CACHE_FILE_INODE} ]; then
        echo "Not found cache file or failed to get inode: ${CACHE_DIR}/${TEST_BUCKET_1}/${CACHE_TESTRUN_DIR}/${BIG_FILE}"
        return 1;
    fi

    #
    # get lines from cache stat file
    #
    CACHE_FILE_STAT_LINE_1=$(${SED_BIN} -n 1p ${CACHE_DIR}/.${TEST_BUCKET_1}.stat/${CACHE_TESTRUN_DIR}/${BIG_FILE})
    CACHE_FILE_STAT_LINE_2=$(${SED_BIN} -n 2p ${CACHE_DIR}/.${TEST_BUCKET_1}.stat/${CACHE_TESTRUN_DIR}/${BIG_FILE})
    if [ -z ${CACHE_FILE_STAT_LINE_1} ] || [ -z ${CACHE_FILE_STAT_LINE_2} ]; then
        echo "could not get first or second line from cache file stat: ${CACHE_DIR}/.${TEST_BUCKET_1}.stat/${CACHE_TESTRUN_DIR}/${BIG_FILE}"
        return 1;
    fi

    #
    # compare
    #
    if [ "${CACHE_FILE_STAT_LINE_1}" != "${CACHE_FILE_INODE}:${BIG_FILE_LENGTH}" ]; then
        echo "first line(cache file stat) is different: \"${CACHE_FILE_STAT_LINE_1}\" != \"${CACHE_FILE_INODE}:${BIG_FILE_LENGTH}\""
        return 1;
    fi
    if [ "${CACHE_FILE_STAT_LINE_2}" != "0:${BIG_FILE_LENGTH}:1:0" ]; then
        echo "last line(cache file stat) is different: \"${CACHE_FILE_STAT_LINE_2}\" != \"0:${BIG_FILE_LENGTH}:1:0\""
        return 1;
    fi

    #
    # remove cache files directly
    #
    rm -f ${CACHE_DIR}/${TEST_BUCKET_1}/${CACHE_TESTRUN_DIR}/${BIG_FILE}
    rm -f ${CACHE_DIR}/.${TEST_BUCKET_1}.stat/${CACHE_TESTRUN_DIR}/${BIG_FILE}

    #
    # write a byte into the middle(not the boundary) of the file
    #
    CHECK_UPLOAD_OFFSET=$((10 * 1024 * 1024 + 17))
    dd if=/dev/urandom of="${BIG_FILE}" bs=1 count=1 seek=${CHECK_UPLOAD_OFFSET} conv=notrunc

    #
    # get cache file inode number
    #
    CACHE_FILE_INODE=$(ls -i ${CACHE_DIR}/${TEST_BUCKET_1}/${CACHE_TESTRUN_DIR}/${BIG_FILE} 2>/dev/null | awk '{print $1}')
    if [ -z ${CACHE_FILE_INODE} ]; then
        echo "Not found cache file or failed to get inode: ${CACHE_DIR}/${TEST_BUCKET_1}/${CACHE_TESTRUN_DIR}/${BIG_FILE}"
        return 1;
    fi

    #
    # get lines from cache stat file
    #
    CACHE_FILE_STAT_LINE_1=$(${SED_BIN} -n 1p ${CACHE_DIR}/.${TEST_BUCKET_1}.stat/${CACHE_TESTRUN_DIR}/${BIG_FILE})
    CACHE_FILE_STAT_LINE_E=$(tail -1 ${CACHE_DIR}/.${TEST_BUCKET_1}.stat/${CACHE_TESTRUN_DIR}/${BIG_FILE} 2>/dev/null)
    if [ -z ${CACHE_FILE_STAT_LINE_1} ] || [ -z ${CACHE_FILE_STAT_LINE_E} ]; then
        echo "could not get first or end line from cache file stat: ${CACHE_DIR}/.${TEST_BUCKET_1}.stat/${CACHE_TESTRUN_DIR}/${BIG_FILE}"
        return 1;
    fi

    #
    # check first and cache file length from last line
    #
    # we should check all stat lines, but there are cases where the value
    # differs depending on the processing system etc., then the cache file
    # size is calculated and compared.
    #
    CACHE_LAST_OFFSET=$(echo ${CACHE_FILE_STAT_LINE_E} | cut -d ":" -f1)
    CACHE_LAST_SIZE=$(echo ${CACHE_FILE_STAT_LINE_E} | cut -d ":" -f2)
    CACHE_TOTAL_SIZE=$((${CACHE_LAST_OFFSET} + ${CACHE_LAST_SIZE}))

    if [ "${CACHE_FILE_STAT_LINE_1}" != "${CACHE_FILE_INODE}:${BIG_FILE_LENGTH}" ]; then
        echo "first line(cache file stat) is different: \"${CACHE_FILE_STAT_LINE_1}\" != \"${CACHE_FILE_INODE}:${BIG_FILE_LENGTH}\""
        return 1;
    fi
    if [ ${BIG_FILE_LENGTH} -ne ${CACHE_TOTAL_SIZE} ]; then
        echo "the file size indicated by the cache stat file is different: \"${BIG_FILE_LENGTH}\" != \"${CACHE_TOTAL_SIZE}\""
        return 1;
    fi

    rm_test_file "${BIG_FILE}"
}

function test_zero_cache_file_stat() {
    describe "Test zero byte cache file stat ..."

    rm_test_file ${TEST_TEXT_FILE}

    #
    # create empty file
    #
    touch ${TEST_TEXT_FILE}

    #
    # get "testrun-xxx" directory name
    #
    CACHE_TESTRUN_DIR=$(ls -1 ${CACHE_DIR}/${TEST_BUCKET_1}/ 2>/dev/null | grep testrun 2>/dev/null)

    # [NOTE]
    # The stat file is a one-line text file, expecting for "<inode>:0"(ex. "4543937: 0").
    #
    head -1 ${CACHE_DIR}/.${TEST_BUCKET_1}.stat/${CACHE_TESTRUN_DIR}/${TEST_TEXT_FILE} 2>/dev/null | grep -q ':0$' 2>/dev/null
    if [ $? -ne 0 ]; then
        echo "The cache file stat after creating an empty file is incorrect : ${CACHE_DIR}/.${TEST_BUCKET_1}.stat/${CACHE_TESTRUN_DIR}/${TEST_TEXT_FILE}"
        return 1;
    fi
    rm_test_file ${TEST_TEXT_FILE}
}

function test_upload_sparsefile {
    describe "Testing upload sparse file ..."

    rm_test_file ${BIG_FILE}
    rm -f ${TEMP_DIR}/${BIG_FILE}

    #
    # Make all HOLE file
    #
    ${TRUNCATE_BIN} ${BIG_FILE} -s ${BIG_FILE_LENGTH}

    #
    # Write some bytes to ABOUT middle in the file
    # (Dare to remove the block breaks)
    #
    WRITE_POS=$((${BIG_FILE_LENGTH} / 2 - 128))
    echo -n "0123456789ABCDEF" | dd of="${TEMP_DIR}/${BIG_FILE}" bs=1 count=16 seek=${WRITE_POS} conv=notrunc

    #
    # copy(upload) the file
    #
    cp ${TEMP_DIR}/${BIG_FILE} ${BIG_FILE}

    #
    # check
    #
    cmp ${TEMP_DIR}/${BIG_FILE} ${BIG_FILE}

    rm_test_file ${BIG_FILE}
    rm -f ${TEMP_DIR}/${BIG_FILE}
}

function test_mix_upload_entities() {
    describe "Testing upload sparse files ..."

    #
    # Make test file
    #
    dd if=/dev/urandom of="${BIG_FILE}" bs=$BIG_FILE_BLOCK_SIZE count=$BIG_FILE_COUNT

    #
    # If the cache option is enabled, delete the cache of uploaded files.
    #
    if [ -f ${CACHE_DIR}/${TEST_BUCKET_1}/${BIG_FILE} ]; then
        rm -f ${CACHE_DIR}/${TEST_BUCKET_1}/${BIG_FILE}
    fi
    if [ -f ${CACHE_DIR}/.${TEST_BUCKET_1}.stat/${BIG_FILE} ]; then
        rm -f ${CACHE_DIR}/.${TEST_BUCKET_1}.stat/${BIG_FILE}
    fi

    #
    # Do a partial write to the file.
    #
    echo -n "0123456789ABCDEF" | dd of=${BIG_FILE} bs=1 count=16 seek=0 conv=notrunc
    echo -n "0123456789ABCDEF" | dd of=${BIG_FILE} bs=1 count=16 seek=8192 conv=notrunc
    echo -n "0123456789ABCDEF" | dd of=${BIG_FILE} bs=1 count=16 seek=1073152 conv=notrunc
    echo -n "0123456789ABCDEF" | dd of=${BIG_FILE} bs=1 count=16 seek=26214400 conv=notrunc
    echo -n "0123456789ABCDEF" | dd of=${BIG_FILE} bs=1 count=16 seek=26222592 conv=notrunc

    rm_test_file "${BIG_FILE}"
}

#
# [NOTE]
# This test runs last because it uses up disk space and may not recover.
# This may be a problem, especially on MacOS. (See the comment near the definition
# line for the ENSURE_DISKFREE_SIZE variable)
#
function test_ensurespace_move_file() {
    describe "Testing upload(mv) file when diskspace is not enough ..."

    #
    # Make test file which is not under mountpoint
    #
    mkdir -p ${CACHE_DIR}/.s3fs_test_tmpdir
    dd if=/dev/urandom of="${CACHE_DIR}/.s3fs_test_tmpdir/${BIG_FILE}" bs=$BIG_FILE_BLOCK_SIZE count=$BIG_FILE_COUNT

    #
    # Backup file stat
    #
    if [ `uname` = "Darwin" ]; then
        ORIGINAL_PERMISSIONS=$(stat -f "%u:%g" ${CACHE_DIR}/.s3fs_test_tmpdir/$BIG_FILE)
    else
        ORIGINAL_PERMISSIONS=$(stat --format=%u:%g ${CACHE_DIR}/.s3fs_test_tmpdir/$BIG_FILE)
    fi

    #
    # Fill the disk size
    #
    NOW_CACHE_DISK_AVAIL_SIZE=`get_disk_avail_size ${CACHE_DIR}`
    TMP_FILE_NO=0
    while true; do
      ALLOWED_USING_SIZE=$((NOW_CACHE_DISK_AVAIL_SIZE - ENSURE_DISKFREE_SIZE))
      if [ ${ALLOWED_USING_SIZE} -gt ${BIG_FILE_LENGTH} ]; then
          cp -p ${CACHE_DIR}/.s3fs_test_tmpdir/${BIG_FILE} ${CACHE_DIR}/.s3fs_test_tmpdir/${BIG_FILE}_${TMP_FILE_NO}
          TMP_FILE_NO=$((TMP_FILE_NO + 1))
      else
          break;
      fi
    done

    #
    # move file
    #
    mv "${CACHE_DIR}/.s3fs_test_tmpdir/${BIG_FILE}" "${BIG_FILE}"

    #
    # file stat
    #
    if [ `uname` = "Darwin" ]; then
        MOVED_PERMISSIONS=$(stat -f "%u:%g" $BIG_FILE)
    else
        MOVED_PERMISSIONS=$(stat --format=%u:%g $BIG_FILE)
    fi
    MOVED_FILE_LENGTH=$(ls -l $BIG_FILE | awk '{print $5}')

    #
    # check
    #
    if [ "${MOVED_PERMISSIONS}" != "${ORIGINAL_PERMISSIONS}" ]; then
        echo "Failed to move file with permission"
        return 1
    fi
    if [ ${MOVED_FILE_LENGTH} -ne ${BIG_FILE_LENGTH} ]; then
        echo "Failed to move file with file length: ${MOVED_FILE_LENGTH} ${BIG_FILE_LENGTH}"
        return 1
    fi

    rm_test_file "${BIG_FILE}"
    rm -rf ${CACHE_DIR}/.s3fs_test_tmpdir
}

function test_ut_ossfs {
    describe "Testing ossfs python ut..."
    export TEST_BUCKET_MOUNT_POINT=$TEST_BUCKET_MOUNT_POINT_1
    ../../ut_test.py
}

function add_all_tests {
    if ps u $S3FS_PID | grep -q use_cache; then
        add_tests test_cache_file_stat
        add_tests test_zero_cache_file_stat
    fi
    if ! ps u $S3FS_PID | grep -q ensure_diskfree && ! uname | grep -q Darwin; then
        add_tests test_clean_up_cache
    fi
    add_tests test_create_empty_file
    add_tests test_append_file
    add_tests test_truncate_file
    add_tests test_truncate_upload
    add_tests test_truncate_empty_file
    add_tests test_mv_file
    add_tests test_mv_to_exist_file
    add_tests test_mv_empty_directory
    add_tests test_mv_nonempty_directory
    add_tests test_redirects
    add_tests test_mkdir_rmdir
    add_tests test_chmod
    add_tests test_chown
    add_tests test_list
    add_tests test_remove_nonempty_directory
    if ! ps u $S3FS_PID | grep -q notsup_compat_dir; then
        # TODO: investigate why notsup_compat_dir fails
        add_tests test_external_directory_creation
    fi
    add_tests test_external_modification
    add_tests test_read_external_object
    add_tests test_update_metadata_external_small_object
    add_tests test_update_metadata_external_large_object
    add_tests test_rename_before_close
    add_tests test_multipart_upload
    add_tests test_multipart_copy
    add_tests test_multipart_mix
    add_tests test_utimens_during_multipart
    add_tests test_special_characters
    add_tests test_hardlink
    add_tests test_symlink
    add_tests test_extended_attributes
    add_tests test_mtime_file
    add_tests test_update_time
    add_tests test_update_directory_time
    add_tests test_rm_rf_dir
    add_tests test_copy_file
    add_tests test_write_after_seek_ahead
    add_tests test_overwrite_existing_file_range
    add_tests test_concurrent_directory_updates
    add_tests test_concurrent_reads
    add_tests test_concurrent_writes
    add_tests test_open_second_fd
    add_tests test_write_multiple_offsets
    add_tests test_write_multiple_offsets_backwards
    add_tests test_content_type
    add_tests test_truncate_cache
    add_tests test_upload_sparsefile
    add_tests test_mix_upload_entities
    add_tests test_ut_ossfs
    if ! ps u $S3FS_PID | grep -q ensure_diskfree && ! uname | grep -q Darwin; then
        add_tests test_ensurespace_move_file
    fi
}

init_suite
add_all_tests
run_suite

#
# Local variables:
# tab-width: 4
# c-basic-offset: 4
# End:
# vim600: expandtab sw=4 ts=4 fdm=marker
# vim<600: expandtab sw=4 ts=4
#