#!/bin/sh
#
# Copyright (c) 2007 Junio C Hamano
#

test_description='Test prune and reflog expiration'
. ./test-lib.sh

check_have () {
        gaah= &&
        for N in "$@"
        do
                eval "o=\$$N" && git cat-file -t $o || {
                        echo Gaah $N
                        gaah=$N
                        break
                }
        done &&
        test -z "$gaah"
}

check_fsck () {
        output=$(git fsck --full)
        case "$1" in
        '')
                test -z "$output" ;;
        *)
                echo "$output" | grep "$1" ;;
        esac
}

corrupt () {
        aa=${1%??????????????????????????????????????} zz=${1#??}
        mv .git/objects/$aa/$zz .git/$aa$zz
}

recover () {
        aa=${1%??????????????????????????????????????} zz=${1#??}
        mkdir -p .git/objects/$aa
        mv .git/$aa$zz .git/objects/$aa/$zz
}

check_dont_have () {
        gaah= &&
        for N in "$@"
        do
                eval "o=\$$N"
                git cat-file -t $o && {
                        echo Gaah $N
                        gaah=$N
                        break
                }
        done
        test -z "$gaah"
}

test_expect_success setup '
        mkdir -p A/B &&
        echo rat >C &&
        echo ox >A/D &&
        echo tiger >A/B/E &&
        git add . &&

        test_tick && git commit -m rabbit &&
        H=`git rev-parse --verify HEAD` &&
        A=`git rev-parse --verify HEAD:A` &&
        B=`git rev-parse --verify HEAD:A/B` &&
        C=`git rev-parse --verify HEAD:C` &&
        D=`git rev-parse --verify HEAD:A/D` &&
        E=`git rev-parse --verify HEAD:A/B/E` &&
        check_fsck &&

        test_chmod +x C &&
        git add C &&
        test_tick && git commit -m dragon &&
        L=`git rev-parse --verify HEAD` &&
        check_fsck &&

        rm -f C A/B/E &&
        echo snake >F &&
        echo horse >A/G &&
        git add F A/G &&
        test_tick && git commit -a -m sheep &&
        F=`git rev-parse --verify HEAD:F` &&
        G=`git rev-parse --verify HEAD:A/G` &&
        I=`git rev-parse --verify HEAD:A` &&
        J=`git rev-parse --verify HEAD` &&
        check_fsck &&

        rm -f A/G &&
        test_tick && git commit -a -m monkey &&
        K=`git rev-parse --verify HEAD` &&
        check_fsck &&

        check_have A B C D E F G H I J K L &&

        git prune &&

        check_have A B C D E F G H I J K L &&

        check_fsck &&

        test_line_count = 4 .git/logs/refs/heads/master
'

test_expect_success rewind '
        test_tick && git reset --hard HEAD~2 &&
        test -f C &&
        test -f A/B/E &&
        ! test -f F &&
        ! test -f A/G &&

        check_have A B C D E F G H I J K L &&

        git prune &&

        check_have A B C D E F G H I J K L &&

        test_line_count = 5 .git/logs/refs/heads/master
'

test_expect_success 'corrupt and check' '

        corrupt $F &&
        check_fsck "missing blob $F"

'

test_expect_success 'reflog expire --dry-run should not touch reflog' '

        git reflog expire --dry-run \
                --expire=$(($test_tick - 10000)) \
                --expire-unreachable=$(($test_tick - 10000)) \
                --stale-fix \
                --all &&

        test_line_count = 5 .git/logs/refs/heads/master &&

        check_fsck "missing blob $F"
'

test_expect_success 'reflog expire' '

        git reflog expire --verbose \
                --expire=$(($test_tick - 10000)) \
                --expire-unreachable=$(($test_tick - 10000)) \
                --stale-fix \
                --all &&

        test_line_count = 2 .git/logs/refs/heads/master &&

        check_fsck "dangling commit $K"
'

test_expect_success 'prune and fsck' '

        git prune &&
        check_fsck &&

        check_have A B C D E H L &&
        check_dont_have F G I J K

'

test_expect_success 'recover and check' '

        recover $F &&
        check_fsck "dangling blob $F"

'

test_expect_success 'delete' '
        echo 1 > C &&
        test_tick &&
        git commit -m rat C &&

        echo 2 > C &&
        test_tick &&
        git commit -m ox C &&

        echo 3 > C &&
        test_tick &&
        git commit -m tiger C &&

        HEAD_entry_count=$(git reflog | wc -l) &&
        master_entry_count=$(git reflog show master | wc -l) &&

        test $HEAD_entry_count = 5 &&
        test $master_entry_count = 5 &&


        git reflog delete master@{1} &&
        git reflog show master > output &&
        test $(($master_entry_count - 1)) = $(wc -l < output) &&
        test $HEAD_entry_count = $(git reflog | wc -l) &&
        ! grep ox < output &&

        master_entry_count=$(wc -l < output) &&

        git reflog delete HEAD@{1} &&
        test $(($HEAD_entry_count -1)) = $(git reflog | wc -l) &&
        test $master_entry_count = $(git reflog show master | wc -l) &&

        HEAD_entry_count=$(git reflog | wc -l) &&

        git reflog delete master@{07.04.2005.15:15:00.-0700} &&
        git reflog show master > output &&
        test $(($master_entry_count - 1)) = $(wc -l < output) &&
        ! grep dragon < output

'

test_expect_success 'rewind2' '

        test_tick && git reset --hard HEAD~2 &&
        test_line_count = 4 .git/logs/refs/heads/master
'

test_expect_success '--expire=never' '

        git reflog expire --verbose \
                --expire=never \
                --expire-unreachable=never \
                --all &&
        test_line_count = 4 .git/logs/refs/heads/master
'

test_expect_success 'gc.reflogexpire=never' '

        git config gc.reflogexpire never &&
        git config gc.reflogexpireunreachable never &&
        git reflog expire --verbose --all &&
        test_line_count = 4 .git/logs/refs/heads/master
'

test_expect_success 'gc.reflogexpire=false' '

        git config gc.reflogexpire false &&
        git config gc.reflogexpireunreachable false &&
        git reflog expire --verbose --all &&
        test_line_count = 4 .git/logs/refs/heads/master &&

        git config --unset gc.reflogexpire &&
        git config --unset gc.reflogexpireunreachable

'

test_done