#!/bin/sh

test_description='Test workflows involving pull request.'

. ./test-lib.sh

test_expect_success 'setup' '

        git init --bare upstream.git &&
        git init --bare downstream.git &&
        git clone upstream.git upstream-private &&
        git clone downstream.git local &&

        trash_url="file://$TRASH_DIRECTORY" &&
        downstream_url="$trash_url/downstream.git/" &&
        upstream_url="$trash_url/upstream.git/" &&

        (
                cd upstream-private &&
                cat <<-\EOT >mnemonic.txt &&
                Thirtey days hath November,
                Aprile, June, and September:
                EOT
                git add mnemonic.txt &&
                test_tick &&
                git commit -m "\"Thirty days\", a reminder of month lengths" &&
                git tag -m "version 1" -a initial &&
                git push --tags origin master
        ) &&
        (
                cd local &&
                git remote add upstream "$trash_url/upstream.git" &&
                git fetch upstream &&
                git pull upstream master &&
                cat <<-\EOT >>mnemonic.txt &&
                Of twyecescore-eightt is but eine,
                And all the remnante be thrycescore-eine.
                O’course Leap yare comes an’pynes,
                Ev’rie foure yares, gote it ryghth.
                An’twyecescore-eight is but twyecescore-nyne.
                EOT
                git add mnemonic.txt &&
                test_tick &&
                git commit -m "More detail" &&
                git tag -m "version 2" -a full &&
                git checkout -b simplify HEAD^ &&
                mv mnemonic.txt mnemonic.standard &&
                cat <<-\EOT >mnemonic.clarified &&
                Thirty days has September,
                All the rest I can’t remember.
                EOT
                git add -N mnemonic.standard mnemonic.clarified &&
                git commit -a -m "Adapt to use modern, simpler English

But keep the old version, too, in case some people prefer it." &&
                git checkout master
        )

'

test_expect_success 'setup: two scripts for reading pull requests' '

        downstream_url_for_sed=$(
                printf "%s\n" "$downstream_url" |
                sed -e '\''s/\\/\\\\/g'\'' -e '\''s/[[/.*^$]/\\&/g'\''
        ) &&

        cat <<-\EOT >read-request.sed &&
        #!/bin/sed -nf
        / in the git repository at:$/!d
        n
        /^$/ n
        s/^[    ]*\(.*\) \([^ ]*\)/please pull\
        \1\
        \2/p
        q
        EOT

        cat <<-EOT >fuzz.sed
        #!/bin/sed -nf
        s/$_x40/OBJECT_NAME/g
        s/A U Thor/AUTHOR/g
        s/[-0-9]\{10\} [:0-9]\{8\} [-+][0-9]\{4\}/DATE/g
        s/        [^ ].*/        SUBJECT/g
        s/  [^ ].* (DATE)/  SUBJECT (DATE)/g
        s/$downstream_url_for_sed/URL/g
        s/for-upstream/BRANCH/g
        s/mnemonic.txt/FILENAME/g
        s/^version [0-9]/VERSION/
        /^ FILENAME | *[0-9]* [-+]*\$/ b diffstat
        /^AUTHOR ([0-9]*):\$/ b shortlog
        p
        b
        : diffstat
        n
        / [0-9]* files changed/ {
                a\\
        DIFFSTAT
                b
        }
        b diffstat
        : shortlog
        /^        [a-zA-Z]/ n
        /^[a-zA-Z]* ([0-9]*):\$/ n
        /^\$/ N
        /^\n[a-zA-Z]* ([0-9]*):\$/!{
                a\\
        SHORTLOG
                D
        }
        n
        b shortlog
        EOT

'

test_expect_success 'pull request when forgot to push' '

        rm -fr downstream.git &&
        git init --bare downstream.git &&
        (
                cd local &&
                git checkout initial &&
                git merge --ff-only master &&
                test_must_fail git request-pull initial "$downstream_url" \
                        2>../err
        ) &&
        grep "No branch of.*is at:\$" err &&
        grep "Are you sure you pushed" err

'

test_expect_success 'pull request after push' '

        rm -fr downstream.git &&
        git init --bare downstream.git &&
        (
                cd local &&
                git checkout initial &&
                git merge --ff-only master &&
                git push origin master:for-upstream &&
                git request-pull initial origin >../request
        ) &&
        sed -nf read-request.sed <request >digest &&
        cat digest &&
        {
                read task &&
                read repository &&
                read branch
        } <digest &&
        (
                cd upstream-private &&
                git checkout initial &&
                git pull --ff-only "$repository" "$branch"
        ) &&
        test "$branch" = for-upstream &&
        test_cmp local/mnemonic.txt upstream-private/mnemonic.txt

'

test_expect_success 'request names an appropriate branch' '

        rm -fr downstream.git &&
        git init --bare downstream.git &&
        (
                cd local &&
                git checkout initial &&
                git merge --ff-only master &&
                git push --tags origin master simplify &&
                git push origin master:for-upstream &&
                git request-pull initial "$downstream_url" >../request
        ) &&
        sed -nf read-request.sed <request >digest &&
        cat digest &&
        {
                read task &&
                read repository &&
                read branch
        } <digest &&
        {
                test "$branch" = master ||
                test "$branch" = for-upstream
        }

'

test_expect_success 'pull request format' '

        rm -fr downstream.git &&
        git init --bare downstream.git &&
        cat <<-\EOT >expect &&
        The following changes since commit OBJECT_NAME:

          SUBJECT (DATE)

        are available in the git repository at:

          URL BRANCH

        for you to fetch changes up to OBJECT_NAME:

          SUBJECT (DATE)

        ----------------------------------------------------------------
        VERSION

        ----------------------------------------------------------------
        SHORTLOG

        DIFFSTAT
        EOT
        (
                cd local &&
                git checkout initial &&
                git merge --ff-only master &&
                git push origin master:for-upstream &&
                git request-pull initial "$downstream_url" >../request
        ) &&
        <request sed -nf fuzz.sed >request.fuzzy &&
        test_cmp expect request.fuzzy

'

test_expect_success 'request-pull ignores OPTIONS_KEEPDASHDASH poison' '

        (
                cd local &&
                OPTIONS_KEEPDASHDASH=Yes &&
                export OPTIONS_KEEPDASHDASH &&
                git checkout initial &&
                git merge --ff-only master &&
                git push origin master:for-upstream &&
                git request-pull -- initial "$downstream_url" >../request
        )

'

test_done