#!/bin/sh
#
# Copyright (c) 2007 Johannes E. Schindelin
#

test_description='git fast-export'
. ./test-lib.sh

test_expect_success 'setup' '

        echo break it > file0 &&
        git add file0 &&
        test_tick &&
        echo Wohlauf > file &&
        git add file &&
        test_tick &&
        git commit -m initial &&
        echo die Luft > file &&
        echo geht frisch > file2 &&
        git add file file2 &&
        test_tick &&
        git commit -m second &&
        echo und > file2 &&
        test_tick &&
        git commit -m third file2 &&
        test_tick &&
        git tag rein &&
        git checkout -b wer HEAD^ &&
        echo lange > file2 &&
        test_tick &&
        git commit -m sitzt file2 &&
        test_tick &&
        git tag -a -m valentin muss &&
        git merge -s ours master

'

test_expect_success 'fast-export | fast-import' '

        MASTER=$(git rev-parse --verify master) &&
        REIN=$(git rev-parse --verify rein) &&
        WER=$(git rev-parse --verify wer) &&
        MUSS=$(git rev-parse --verify muss) &&
        mkdir new &&
        git --git-dir=new/.git init &&
        git fast-export --all >actual &&
        (cd new &&
         git fast-import &&
         test $MASTER = $(git rev-parse --verify refs/heads/master) &&
         test $REIN = $(git rev-parse --verify refs/tags/rein) &&
         test $WER = $(git rev-parse --verify refs/heads/wer) &&
         test $MUSS = $(git rev-parse --verify refs/tags/muss)) <actual

'

test_expect_success 'fast-export master~2..master' '

        git fast-export master~2..master >actual &&
        sed "s/master/partial/" actual |
                (cd new &&
                 git fast-import &&
                 test $MASTER != $(git rev-parse --verify refs/heads/partial) &&
                 git diff --exit-code master partial &&
                 git diff --exit-code master^ partial^ &&
                 test_must_fail git rev-parse partial~2)

'

test_expect_success 'iso-8859-1' '

        git config i18n.commitencoding ISO8859-1 &&
        # use author and committer name in ISO-8859-1 to match it.
        . "$TEST_DIRECTORY"/t3901/8859-1.txt &&
        test_tick &&
        echo rosten >file &&
        git commit -s -m den file &&
        git fast-export wer^..wer >iso8859-1.fi &&
        sed "s/wer/i18n/" iso8859-1.fi |
                (cd new &&
                 git fast-import &&
                 git cat-file commit i18n >actual &&
                 grep "Áéí óú" actual)

'
test_expect_success 'import/export-marks' '

        git checkout -b marks master &&
        git fast-export --export-marks=tmp-marks HEAD &&
        test -s tmp-marks &&
        test_line_count = 3 tmp-marks &&
        git fast-export --import-marks=tmp-marks \
                --export-marks=tmp-marks HEAD >actual &&
        test $(grep ^commit actual | wc -l) -eq 0 &&
        echo change > file &&
        git commit -m "last commit" file &&
        git fast-export --import-marks=tmp-marks \
                --export-marks=tmp-marks HEAD >actual &&
        test $(grep ^commit\  actual | wc -l) -eq 1 &&
        test_line_count = 4 tmp-marks

'

cat > signed-tag-import << EOF
tag sign-your-name
from $(git rev-parse HEAD)
tagger C O Mitter <committer@example.com> 1112911993 -0700
data 210
A message for a sign
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.5 (GNU/Linux)

fakedsignaturefakedsignaturefakedsignaturefakedsignaturfakedsign
aturefakedsignaturefake=
=/59v
-----END PGP SIGNATURE-----
EOF

test_expect_success 'set up faked signed tag' '

        cat signed-tag-import | git fast-import

'

test_expect_success 'signed-tags=abort' '

        test_must_fail git fast-export --signed-tags=abort sign-your-name

'

test_expect_success 'signed-tags=verbatim' '

        git fast-export --signed-tags=verbatim sign-your-name > output &&
        grep PGP output

'

test_expect_success 'signed-tags=strip' '

        git fast-export --signed-tags=strip sign-your-name > output &&
        ! grep PGP output

'

test_expect_success 'signed-tags=warn-strip' '
        git fast-export --signed-tags=warn-strip sign-your-name >output 2>err &&
        ! grep PGP output &&
        test -s err
'

test_expect_success 'setup submodule' '

        git checkout -f master &&
        mkdir sub &&
        (
                cd sub &&
                git init  &&
                echo test file > file &&
                git add file &&
                git commit -m sub_initial
        ) &&
        git submodule add "$(pwd)/sub" sub &&
        git commit -m initial &&
        test_tick &&
        (
                cd sub &&
                echo more data >> file &&
                git add file &&
                git commit -m sub_second
        ) &&
        git add sub &&
        git commit -m second

'

test_expect_success 'submodule fast-export | fast-import' '

        SUBENT1=$(git ls-tree master^ sub) &&
        SUBENT2=$(git ls-tree master sub) &&
        rm -rf new &&
        mkdir new &&
        git --git-dir=new/.git init &&
        git fast-export --signed-tags=strip --all >actual &&
        (cd new &&
         git fast-import &&
         test "$SUBENT1" = "$(git ls-tree refs/heads/master^ sub)" &&
         test "$SUBENT2" = "$(git ls-tree refs/heads/master sub)" &&
         git checkout master &&
         git submodule init &&
         git submodule update &&
         cmp sub/file ../sub/file) <actual

'

GIT_AUTHOR_NAME='A U Thor'; export GIT_AUTHOR_NAME
GIT_COMMITTER_NAME='C O Mitter'; export GIT_COMMITTER_NAME

test_expect_success 'setup copies' '

        git config --unset i18n.commitencoding &&
        git checkout -b copy rein &&
        git mv file file3 &&
        git commit -m move1 &&
        test_tick &&
        cp file2 file4 &&
        git add file4 &&
        git mv file2 file5 &&
        git commit -m copy1 &&
        test_tick &&
        cp file3 file6 &&
        git add file6 &&
        git commit -m copy2 &&
        test_tick &&
        echo more text >> file6 &&
        echo even more text >> file6 &&
        git add file6 &&
        git commit -m modify &&
        test_tick &&
        cp file6 file7 &&
        echo test >> file7 &&
        git add file7 &&
        git commit -m copy_modify

'

test_expect_success 'fast-export -C -C | fast-import' '

        ENTRY=$(git rev-parse --verify copy) &&
        rm -rf new &&
        mkdir new &&
        git --git-dir=new/.git init &&
        git fast-export -C -C --signed-tags=strip --all > output &&
        grep "^C file2 file4\$" output &&
        cat output |
        (cd new &&
         git fast-import &&
         test $ENTRY = $(git rev-parse --verify refs/heads/copy))

'

test_expect_success 'fast-export | fast-import when master is tagged' '

        git tag -m msg last &&
        git fast-export -C -C --signed-tags=strip --all > output &&
        test $(grep -c "^tag " output) = 3

'

cat > tag-content << EOF
object $(git rev-parse HEAD)
type commit
tag rosten
EOF

test_expect_success 'cope with tagger-less tags' '

        TAG=$(git hash-object -t tag -w tag-content) &&
        git update-ref refs/tags/sonnenschein $TAG &&
        git fast-export -C -C --signed-tags=strip --all > output &&
        test $(grep -c "^tag " output) = 4 &&
        ! grep "Unspecified Tagger" output &&
        git fast-export -C -C --signed-tags=strip --all \
                --fake-missing-tagger > output &&
        test $(grep -c "^tag " output) = 4 &&
        grep "Unspecified Tagger" output

'

test_expect_success 'setup for limiting exports by PATH' '
        mkdir limit-by-paths &&
        (
                cd limit-by-paths &&
                git init &&
                echo hi > there &&
                git add there &&
                git commit -m "First file" &&
                echo foo > bar &&
                git add bar &&
                git commit -m "Second file" &&
                git tag -a -m msg mytag &&
                echo morefoo >> bar &&
                git add bar &&
                git commit -m "Change to second file"
        )
'

cat > limit-by-paths/expected << EOF
blob
mark :1
data 3
hi

reset refs/tags/mytag
commit refs/tags/mytag
mark :2
author A U Thor <author@example.com> 1112912713 -0700
committer C O Mitter <committer@example.com> 1112912713 -0700
data 11
First file
M 100644 :1 there

EOF

test_expect_success 'dropping tag of filtered out object' '
(
        cd limit-by-paths &&
        git fast-export --tag-of-filtered-object=drop mytag -- there > output &&
        test_cmp expected output
)
'

cat >> limit-by-paths/expected << EOF
tag mytag
from :2
tagger C O Mitter <committer@example.com> 1112912713 -0700
data 4
msg

EOF

test_expect_success 'rewriting tag of filtered out object' '
(
        cd limit-by-paths &&
        git fast-export --tag-of-filtered-object=rewrite mytag -- there > output &&
        test_cmp expected output
)
'

test_expect_success 'rewrite tag predating pathspecs to nothing' '
        test_create_repo rewrite_tag_predating_pathspecs &&
        (
                cd rewrite_tag_predating_pathspecs &&

                test_commit initial &&

                git tag -a -m "Some old tag" v0.0.0.0.0.0.1 &&

                test_commit bar &&

                git fast-export --tag-of-filtered-object=rewrite --all -- bar.t >output &&
                grep from.$ZERO_OID output
        )
'

cat > limit-by-paths/expected << EOF
blob
mark :1
data 4
foo

blob
mark :2
data 3
hi

reset refs/heads/master
commit refs/heads/master
mark :3
author A U Thor <author@example.com> 1112912713 -0700
committer C O Mitter <committer@example.com> 1112912713 -0700
data 12
Second file
M 100644 :1 bar
M 100644 :2 there

EOF

test_expect_failure 'no exact-ref revisions included' '
        (
                cd limit-by-paths &&
                git fast-export master~2..master~1 > output &&
                test_cmp expected output
        )
'

test_expect_success 'path limiting with import-marks does not lose unmodified files'        '
        git checkout -b simple marks~2 &&
        git fast-export --export-marks=marks simple -- file > /dev/null &&
        echo more content >> file &&
        test_tick &&
        git commit -mnext file &&
        git fast-export --import-marks=marks simple -- file file0 >actual &&
        grep file0 actual
'

test_expect_success 'avoid corrupt stream with non-existent mark' '
        test_create_repo avoid_non_existent_mark &&
        (
                cd avoid_non_existent_mark &&

                test_commit important-path &&

                test_commit ignored &&

                git branch A &&
                git branch B &&

                echo foo >>important-path.t &&
                git add important-path.t &&
                test_commit more changes &&

                git fast-export --all -- important-path.t | git fast-import --force
        )
'

test_expect_success 'full-tree re-shows unmodified files'        '
        git checkout -f simple &&
        git fast-export --full-tree simple >actual &&
        test $(grep -c file0 actual) -eq 3
'

test_expect_success 'set-up a few more tags for tag export tests' '
        git checkout -f master &&
        HEAD_TREE=$(git show -s --pretty=raw HEAD | grep tree | sed "s/tree //") &&
        git tag    tree_tag        -m "tagging a tree" $HEAD_TREE &&
        git tag -a tree_tag-obj    -m "tagging a tree" $HEAD_TREE &&
        git tag    tag-obj_tag     -m "tagging a tag" tree_tag-obj &&
        git tag -a tag-obj_tag-obj -m "tagging a tag" tree_tag-obj
'

test_expect_success 'tree_tag'        '
        mkdir result &&
        (cd result && git init) &&
        git fast-export tree_tag > fe-stream &&
        (cd result && git fast-import < ../fe-stream)
'

# NEEDSWORK: not just check return status, but validate the output
test_expect_success 'tree_tag-obj'    'git fast-export tree_tag-obj'
test_expect_success 'tag-obj_tag'     'git fast-export tag-obj_tag'
test_expect_success 'tag-obj_tag-obj' 'git fast-export tag-obj_tag-obj'

test_expect_success 'directory becomes symlink'        '
        git init dirtosymlink &&
        git init result &&
        (
                cd dirtosymlink &&
                mkdir foo &&
                mkdir bar &&
                echo hello > foo/world &&
                echo hello > bar/world &&
                git add foo/world bar/world &&
                git commit -q -mone &&
                git rm -r foo &&
                test_ln_s_add bar foo &&
                git commit -q -mtwo
        ) &&
        (
                cd dirtosymlink &&
                git fast-export master -- foo |
                (cd ../result && git fast-import --quiet)
        ) &&
        (cd result && git show master:foo)
'

test_expect_success 'fast-export quotes pathnames' '
        git init crazy-paths &&
        (cd crazy-paths &&
         blob=$(echo foo | git hash-object -w --stdin) &&
         git update-index --add \
                --cacheinfo 100644 $blob "$(printf "path with\\nnewline")" \
                --cacheinfo 100644 $blob "path with \"quote\"" \
                --cacheinfo 100644 $blob "path with \\backslash" \
                --cacheinfo 100644 $blob "path with space" &&
         git commit -m addition &&
         git ls-files -z -s | perl -0pe "s{\\t}{$&subdir/}" >index &&
         git read-tree --empty &&
         git update-index -z --index-info <index &&
         git commit -m rename &&
         git read-tree --empty &&
         git commit -m deletion &&
         git fast-export -M HEAD >export.out &&
         git rev-list HEAD >expect &&
         git init result &&
         cd result &&
         git fast-import <../export.out &&
         git rev-list HEAD >actual &&
         test_cmp ../expect actual
        )
'

test_expect_success 'test bidirectionality' '
        >marks-cur &&
        >marks-new &&
        git init marks-test &&
        git fast-export --export-marks=marks-cur --import-marks=marks-cur --branches | \
        git --git-dir=marks-test/.git fast-import --export-marks=marks-new --import-marks=marks-new &&
        (cd marks-test &&
        git reset --hard &&
        echo Wohlauf > file &&
        git commit -a -m "back in time") &&
        git --git-dir=marks-test/.git fast-export --export-marks=marks-new --import-marks=marks-new --branches | \
        git fast-import --export-marks=marks-cur --import-marks=marks-cur
'

cat > expected << EOF
blob
mark :13
data 5
bump

commit refs/heads/master
mark :14
author A U Thor <author@example.com> 1112912773 -0700
committer C O Mitter <committer@example.com> 1112912773 -0700
data 5
bump
from :12
M 100644 :13 file

EOF

test_expect_success 'avoid uninteresting refs' '
        > tmp-marks &&
        git fast-export --import-marks=tmp-marks \
                --export-marks=tmp-marks master > /dev/null &&
        git tag v1.0 &&
        git branch uninteresting &&
        echo bump > file &&
        git commit -a -m bump &&
        git fast-export --import-marks=tmp-marks \
                --export-marks=tmp-marks ^uninteresting ^v1.0 master > actual &&
        test_cmp expected actual
'

cat > expected << EOF
reset refs/heads/master
from :14

EOF

test_expect_success 'refs are updated even if no commits need to be exported' '
        > tmp-marks &&
        git fast-export --import-marks=tmp-marks \
                --export-marks=tmp-marks master > /dev/null &&
        git fast-export --import-marks=tmp-marks \
                --export-marks=tmp-marks master > actual &&
        test_cmp expected actual
'

test_expect_success 'use refspec' '
        git fast-export --refspec refs/heads/master:refs/heads/foobar master >actual2 &&
        grep "^commit " actual2 | sort | uniq >actual &&
        echo "commit refs/heads/foobar" > expected &&
        test_cmp expected actual
'

test_expect_success 'delete ref because entire history excluded' '
        git branch to-delete &&
        git fast-export to-delete ^to-delete >actual &&
        cat >expected <<-EOF &&
        reset refs/heads/to-delete
        from 0000000000000000000000000000000000000000

        EOF
        test_cmp expected actual
'

test_expect_success 'delete refspec' '
        git fast-export --refspec :refs/heads/to-delete >actual &&
        cat >expected <<-EOF &&
        reset refs/heads/to-delete
        from 0000000000000000000000000000000000000000

        EOF
        test_cmp expected actual
'

test_expect_success 'when using -C, do not declare copy when source of copy is also modified' '
        test_create_repo src &&
        echo a_line >src/file.txt &&
        git -C src add file.txt &&
        git -C src commit -m 1st_commit &&

        cp src/file.txt src/file2.txt &&
        echo another_line >>src/file.txt &&
        git -C src add file.txt file2.txt &&
        git -C src commit -m 2nd_commit &&

        test_create_repo dst &&
        git -C src fast-export --all -C >actual &&
        git -C dst fast-import <actual &&
        git -C src show >expected &&
        git -C dst show >actual &&
        test_cmp expected actual
'

test_expect_success 'merge commit gets exported with --import-marks' '
        test_create_repo merging &&
        (
                cd merging &&
                test_commit initial &&
                git checkout -b topic &&
                test_commit on-topic &&
                git checkout master &&
                test_commit on-master &&
                test_tick &&
                git merge --no-ff -m Yeah topic &&

                echo ":1 $(git rev-parse HEAD^^)" >marks &&
                git fast-export --import-marks=marks master >out &&
                grep Yeah out
        )
'

test_done