#!/bin/sh
# Copyright (c) 2006, Junio C Hamano.

test_description='Per branch config variables affects "git fetch".

'

. ./test-lib.sh

D=$(pwd)

test_bundle_object_count () {
        git verify-pack -v "$1" >verify.out &&
        test "$2" = $(grep '^[0-9a-f]\{40\} ' verify.out | wc -l)
}

convert_bundle_to_pack () {
        while read x && test -n "$x"
        do
                :;
        done
        cat
}

test_expect_success setup '
        echo >file original &&
        git add file &&
        git commit -a -m original'

test_expect_success "clone and setup child repos" '
        git clone . one &&
        (
                cd one &&
                echo >file updated by one &&
                git commit -a -m "updated by one"
        ) &&
        git clone . two &&
        (
                cd two &&
                git config branch.master.remote one &&
                git config remote.one.url ../one/.git/ &&
                git config remote.one.fetch refs/heads/master:refs/heads/one
        ) &&
        git clone . three &&
        (
                cd three &&
                git config branch.master.remote two &&
                git config branch.master.merge refs/heads/one &&
                mkdir -p .git/remotes &&
                {
                        echo "URL: ../two/.git/"
                        echo "Pull: refs/heads/master:refs/heads/two"
                        echo "Pull: refs/heads/one:refs/heads/one"
                } >.git/remotes/two
        ) &&
        git clone . bundle &&
        git clone . seven
'

test_expect_success "fetch test" '
        cd "$D" &&
        echo >file updated by origin &&
        git commit -a -m "updated by origin" &&
        cd two &&
        git fetch &&
        test -f .git/refs/heads/one &&
        mine=$(git rev-parse refs/heads/one) &&
        his=$(cd ../one && git rev-parse refs/heads/master) &&
        test "z$mine" = "z$his"
'

test_expect_success "fetch test for-merge" '
        cd "$D" &&
        cd three &&
        git fetch &&
        test -f .git/refs/heads/two &&
        test -f .git/refs/heads/one &&
        master_in_two=$(cd ../two && git rev-parse master) &&
        one_in_two=$(cd ../two && git rev-parse one) &&
        {
                echo "$one_in_two       "
                echo "$master_in_two    not-for-merge"
        } >expected &&
        cut -f -2 .git/FETCH_HEAD >actual &&
        test_cmp expected actual'

test_expect_success 'fetch --prune on its own works as expected' '
        cd "$D" &&
        git clone . prune &&
        cd prune &&
        git update-ref refs/remotes/origin/extrabranch master &&

        git fetch --prune origin &&
        test_must_fail git rev-parse origin/extrabranch
'

test_expect_success 'fetch --prune with a branch name keeps branches' '
        cd "$D" &&
        git clone . prune-branch &&
        cd prune-branch &&
        git update-ref refs/remotes/origin/extrabranch master &&

        git fetch --prune origin master &&
        git rev-parse origin/extrabranch
'

test_expect_success 'fetch --prune with a namespace keeps other namespaces' '
        cd "$D" &&
        git clone . prune-namespace &&
        cd prune-namespace &&

        git fetch --prune origin refs/heads/a/*:refs/remotes/origin/a/* &&
        git rev-parse origin/master
'

test_expect_success 'fetch --prune handles overlapping refspecs' '
        cd "$D" &&
        git update-ref refs/pull/42/head master &&
        git clone . prune-overlapping &&
        cd prune-overlapping &&
        git config --add remote.origin.fetch refs/pull/*/head:refs/remotes/origin/pr/* &&

        git fetch --prune origin &&
        git rev-parse origin/master &&
        git rev-parse origin/pr/42 &&

        git config --unset-all remote.origin.fetch &&
        git config remote.origin.fetch refs/pull/*/head:refs/remotes/origin/pr/* &&
        git config --add remote.origin.fetch refs/heads/*:refs/remotes/origin/* &&

        git fetch --prune origin &&
        git rev-parse origin/master &&
        git rev-parse origin/pr/42
'

test_expect_success 'fetch --prune --tags prunes branches but not tags' '
        cd "$D" &&
        git clone . prune-tags &&
        cd prune-tags &&
        git tag sometag master &&
        # Create what looks like a remote-tracking branch from an earlier
        # fetch that has since been deleted from the remote:
        git update-ref refs/remotes/origin/fake-remote master &&

        git fetch --prune --tags origin &&
        git rev-parse origin/master &&
        test_must_fail git rev-parse origin/fake-remote &&
        git rev-parse sometag
'

test_expect_success 'fetch --prune --tags with branch does not prune other things' '
        cd "$D" &&
        git clone . prune-tags-branch &&
        cd prune-tags-branch &&
        git tag sometag master &&
        git update-ref refs/remotes/origin/extrabranch master &&

        git fetch --prune --tags origin master &&
        git rev-parse origin/extrabranch &&
        git rev-parse sometag
'

test_expect_success 'fetch --prune --tags with refspec prunes based on refspec' '
        cd "$D" &&
        git clone . prune-tags-refspec &&
        cd prune-tags-refspec &&
        git tag sometag master &&
        git update-ref refs/remotes/origin/foo/otherbranch master &&
        git update-ref refs/remotes/origin/extrabranch master &&

        git fetch --prune --tags origin refs/heads/foo/*:refs/remotes/origin/foo/* &&
        test_must_fail git rev-parse refs/remotes/origin/foo/otherbranch &&
        git rev-parse origin/extrabranch &&
        git rev-parse sometag
'

test_expect_success 'fetch tags when there is no tags' '

    cd "$D" &&

    mkdir notags &&
    cd notags &&
    git init &&

    git fetch -t ..

'

test_expect_success 'fetch following tags' '

        cd "$D" &&
        git tag -a -m 'annotated' anno HEAD &&
        git tag light HEAD &&

        mkdir four &&
        cd four &&
        git init &&

        git fetch .. :track &&
        git show-ref --verify refs/tags/anno &&
        git show-ref --verify refs/tags/light

'

test_expect_success 'fetch uses remote ref names to describe new refs' '
        cd "$D" &&
        git init descriptive &&
        (
                cd descriptive &&
                git config remote.o.url .. &&
                git config remote.o.fetch "refs/heads/*:refs/crazyheads/*" &&
                git config --add remote.o.fetch "refs/others/*:refs/heads/*" &&
                git fetch o
        ) &&
        git tag -a -m "Descriptive tag" descriptive-tag &&
        git branch descriptive-branch &&
        git checkout descriptive-branch &&
        echo "Nuts" >crazy &&
        git add crazy &&
        git commit -a -m "descriptive commit" &&
        git update-ref refs/others/crazy HEAD &&
        (
                cd descriptive &&
                git fetch o 2>actual &&
                grep " -> refs/crazyheads/descriptive-branch$" actual |
                test_i18ngrep "new branch" &&
                grep " -> descriptive-tag$" actual |
                test_i18ngrep "new tag" &&
                grep " -> crazy$" actual |
                test_i18ngrep "new ref"
        ) &&
        git checkout master
'

test_expect_success 'fetch must not resolve short tag name' '

        cd "$D" &&

        mkdir five &&
        cd five &&
        git init &&

        test_must_fail git fetch .. anno:five

'

test_expect_success 'fetch can now resolve short remote name' '

        cd "$D" &&
        git update-ref refs/remotes/six/HEAD HEAD &&

        mkdir six &&
        cd six &&
        git init &&

        git fetch .. six:six
'

test_expect_success 'create bundle 1' '
        cd "$D" &&
        echo >file updated again by origin &&
        git commit -a -m "tip" &&
        git bundle create bundle1 master^..master
'

test_expect_success 'header of bundle looks right' '
        head -n 1 "$D"/bundle1 | grep "^#" &&
        head -n 2 "$D"/bundle1 | grep "^-[0-9a-f]\{40\} " &&
        head -n 3 "$D"/bundle1 | grep "^[0-9a-f]\{40\} " &&
        head -n 4 "$D"/bundle1 | grep "^$"
'

test_expect_success 'create bundle 2' '
        cd "$D" &&
        git bundle create bundle2 master~2..master
'

test_expect_success 'unbundle 1' '
        cd "$D/bundle" &&
        git checkout -b some-branch &&
        test_must_fail git fetch "$D/bundle1" master:master
'


test_expect_success 'bundle 1 has only 3 files ' '
        cd "$D" &&
        convert_bundle_to_pack <bundle1 >bundle.pack &&
        git index-pack bundle.pack &&
        test_bundle_object_count bundle.pack 3
'

test_expect_success 'unbundle 2' '
        cd "$D/bundle" &&
        git fetch ../bundle2 master:master &&
        test "tip" = "$(git log -1 --pretty=oneline master | cut -b42-)"
'

test_expect_success 'bundle does not prerequisite objects' '
        cd "$D" &&
        touch file2 &&
        git add file2 &&
        git commit -m add.file2 file2 &&
        git bundle create bundle3 -1 HEAD &&
        convert_bundle_to_pack <bundle3 >bundle.pack &&
        git index-pack bundle.pack &&
        test_bundle_object_count bundle.pack 3
'

test_expect_success 'bundle should be able to create a full history' '

        cd "$D" &&
        git tag -a -m '1.0' v1.0 master &&
        git bundle create bundle4 v1.0

'

test_expect_success 'fetch with a non-applying branch.<name>.merge' '
        git config branch.master.remote yeti &&
        git config branch.master.merge refs/heads/bigfoot &&
        git config remote.blub.url one &&
        git config remote.blub.fetch "refs/heads/*:refs/remotes/one/*" &&
        git fetch blub
'

# URL supplied to fetch does not match the url of the configured branch's remote
test_expect_success 'fetch from GIT URL with a non-applying branch.<name>.merge [1]' '
        one_head=$(cd one && git rev-parse HEAD) &&
        this_head=$(git rev-parse HEAD) &&
        git update-ref -d FETCH_HEAD &&
        git fetch one &&
        test $one_head = "$(git rev-parse --verify FETCH_HEAD)" &&
        test $this_head = "$(git rev-parse --verify HEAD)"
'

# URL supplied to fetch matches the url of the configured branch's remote and
# the merge spec matches the branch the remote HEAD points to
test_expect_success 'fetch from GIT URL with a non-applying branch.<name>.merge [2]' '
        one_ref=$(cd one && git symbolic-ref HEAD) &&
        git config branch.master.remote blub &&
        git config branch.master.merge "$one_ref" &&
        git update-ref -d FETCH_HEAD &&
        git fetch one &&
        test $one_head = "$(git rev-parse --verify FETCH_HEAD)" &&
        test $this_head = "$(git rev-parse --verify HEAD)"
'

# URL supplied to fetch matches the url of the configured branch's remote, but
# the merge spec does not match the branch the remote HEAD points to
test_expect_success 'fetch from GIT URL with a non-applying branch.<name>.merge [3]' '
        git config branch.master.merge "${one_ref}_not" &&
        git update-ref -d FETCH_HEAD &&
        git fetch one &&
        test $one_head = "$(git rev-parse --verify FETCH_HEAD)" &&
        test $this_head = "$(git rev-parse --verify HEAD)"
'

# the strange name is: a\!'b
test_expect_success 'quoting of a strangely named repo' '
        test_must_fail git fetch "a\\!'\''b" > result 2>&1 &&
        cat result &&
        grep "fatal: '\''a\\\\!'\''b'\''" result
'

test_expect_success 'bundle should record HEAD correctly' '

        cd "$D" &&
        git bundle create bundle5 HEAD master &&
        git bundle list-heads bundle5 >actual &&
        for h in HEAD refs/heads/master
        do
                echo "$(git rev-parse --verify $h) $h"
        done >expect &&
        test_cmp expect actual

'

test_expect_success 'mark initial state of origin/master' '
        (
                cd three &&
                git tag base-origin-master refs/remotes/origin/master
        )
'

test_expect_success 'explicit fetch should update tracking' '

        cd "$D" &&
        git branch -f side &&
        (
                cd three &&
                git update-ref refs/remotes/origin/master base-origin-master &&
                o=$(git rev-parse --verify refs/remotes/origin/master) &&
                git fetch origin master &&
                n=$(git rev-parse --verify refs/remotes/origin/master) &&
                test "$o" != "$n" &&
                test_must_fail git rev-parse --verify refs/remotes/origin/side
        )
'

test_expect_success 'explicit pull should update tracking' '

        cd "$D" &&
        git branch -f side &&
        (
                cd three &&
                git update-ref refs/remotes/origin/master base-origin-master &&
                o=$(git rev-parse --verify refs/remotes/origin/master) &&
                git pull origin master &&
                n=$(git rev-parse --verify refs/remotes/origin/master) &&
                test "$o" != "$n" &&
                test_must_fail git rev-parse --verify refs/remotes/origin/side
        )
'

test_expect_success 'explicit --refmap is allowed only with command-line refspec' '
        cd "$D" &&
        (
                cd three &&
                test_must_fail git fetch --refmap="*:refs/remotes/none/*"
        )
'

test_expect_success 'explicit --refmap option overrides remote.*.fetch' '
        cd "$D" &&
        git branch -f side &&
        (
                cd three &&
                git update-ref refs/remotes/origin/master base-origin-master &&
                o=$(git rev-parse --verify refs/remotes/origin/master) &&
                git fetch --refmap="refs/heads/*:refs/remotes/other/*" origin master &&
                n=$(git rev-parse --verify refs/remotes/origin/master) &&
                test "$o" = "$n" &&
                test_must_fail git rev-parse --verify refs/remotes/origin/side &&
                git rev-parse --verify refs/remotes/other/master
        )
'

test_expect_success 'explicitly empty --refmap option disables remote.*.fetch' '
        cd "$D" &&
        git branch -f side &&
        (
                cd three &&
                git update-ref refs/remotes/origin/master base-origin-master &&
                o=$(git rev-parse --verify refs/remotes/origin/master) &&
                git fetch --refmap="" origin master &&
                n=$(git rev-parse --verify refs/remotes/origin/master) &&
                test "$o" = "$n" &&
                test_must_fail git rev-parse --verify refs/remotes/origin/side
        )
'

test_expect_success 'configured fetch updates tracking' '

        cd "$D" &&
        git branch -f side &&
        (
                cd three &&
                git update-ref refs/remotes/origin/master base-origin-master &&
                o=$(git rev-parse --verify refs/remotes/origin/master) &&
                git fetch origin &&
                n=$(git rev-parse --verify refs/remotes/origin/master) &&
                test "$o" != "$n" &&
                git rev-parse --verify refs/remotes/origin/side
        )
'

test_expect_success 'non-matching refspecs do not confuse tracking update' '
        cd "$D" &&
        git update-ref refs/odd/location HEAD &&
        (
                cd three &&
                git update-ref refs/remotes/origin/master base-origin-master &&
                git config --add remote.origin.fetch \
                        refs/odd/location:refs/remotes/origin/odd &&
                o=$(git rev-parse --verify refs/remotes/origin/master) &&
                git fetch origin master &&
                n=$(git rev-parse --verify refs/remotes/origin/master) &&
                test "$o" != "$n" &&
                test_must_fail git rev-parse --verify refs/remotes/origin/odd
        )
'

test_expect_success 'pushing nonexistent branch by mistake should not segv' '

        cd "$D" &&
        test_must_fail git push seven no:no

'

test_expect_success 'auto tag following fetches minimum' '

        cd "$D" &&
        git clone .git follow &&
        git checkout HEAD^0 &&
        (
                for i in 1 2 3 4 5 6 7
                do
                        echo $i >>file &&
                        git commit -m $i -a &&
                        git tag -a -m $i excess-$i || exit 1
                done
        ) &&
        git checkout master &&
        (
                cd follow &&
                git fetch
        )
'

test_expect_success 'refuse to fetch into the current branch' '

        test_must_fail git fetch . side:master

'

test_expect_success 'fetch into the current branch with --update-head-ok' '

        git fetch --update-head-ok . side:master

'

test_expect_success 'fetch --dry-run' '

        rm -f .git/FETCH_HEAD &&
        git fetch --dry-run . &&
        ! test -f .git/FETCH_HEAD
'

test_expect_success "should be able to fetch with duplicate refspecs" '
        mkdir dups &&
        (
                cd dups &&
                git init &&
                git config branch.master.remote three &&
                git config remote.three.url ../three/.git &&
                git config remote.three.fetch +refs/heads/*:refs/remotes/origin/* &&
                git config --add remote.three.fetch +refs/heads/*:refs/remotes/origin/* &&
                git fetch three
        )
'

# configured prune tests

set_config_tristate () {
        # var=$1 val=$2
        case "$2" in
        unset)  test_unconfig "$1" ;;
        *)      git config "$1" "$2" ;;
        esac
}

test_configured_prune () {
        fetch_prune=$1 remote_origin_prune=$2 cmdline=$3 expected=$4

        test_expect_success "prune fetch.prune=$1 remote.origin.prune=$2${3:+ $3}; $4" '
                # make sure a newbranch is there in . and also in one
                git branch -f newbranch &&
                (
                        cd one &&
                        test_unconfig fetch.prune &&
                        test_unconfig remote.origin.prune &&
                        git fetch &&
                        git rev-parse --verify refs/remotes/origin/newbranch
                ) &&

                # now remove it
                git branch -d newbranch &&

                # then test
                (
                        cd one &&
                        set_config_tristate fetch.prune $fetch_prune &&
                        set_config_tristate remote.origin.prune $remote_origin_prune &&

                        git fetch $cmdline &&
                        case "$expected" in
                        pruned)
                                test_must_fail git rev-parse --verify refs/remotes/origin/newbranch
                                ;;
                        kept)
                                git rev-parse --verify refs/remotes/origin/newbranch
                                ;;
                        esac
                )
        '
}

test_configured_prune unset unset ""            kept
test_configured_prune unset unset "--no-prune"  kept
test_configured_prune unset unset "--prune"     pruned

test_configured_prune false unset ""            kept
test_configured_prune false unset "--no-prune"  kept
test_configured_prune false unset "--prune"     pruned

test_configured_prune true  unset ""            pruned
test_configured_prune true  unset "--prune"     pruned
test_configured_prune true  unset "--no-prune"  kept

test_configured_prune unset false ""            kept
test_configured_prune unset false "--no-prune"  kept
test_configured_prune unset false "--prune"     pruned

test_configured_prune false false ""            kept
test_configured_prune false false "--no-prune"  kept
test_configured_prune false false "--prune"     pruned

test_configured_prune true  false ""            kept
test_configured_prune true  false "--prune"     pruned
test_configured_prune true  false "--no-prune"  kept

test_configured_prune unset true  ""            pruned
test_configured_prune unset true  "--no-prune"  kept
test_configured_prune unset true  "--prune"     pruned

test_configured_prune false true  ""            pruned
test_configured_prune false true  "--no-prune"  kept
test_configured_prune false true  "--prune"     pruned

test_configured_prune true  true  ""            pruned
test_configured_prune true  true  "--prune"     pruned
test_configured_prune true  true  "--no-prune"  kept

test_expect_success 'all boundary commits are excluded' '
        test_commit base &&
        test_commit oneside &&
        git checkout HEAD^ &&
        test_commit otherside &&
        git checkout master &&
        test_tick &&
        git merge otherside &&
        ad=$(git log --no-walk --format=%ad HEAD) &&
        git bundle create twoside-boundary.bdl master --since="$ad" &&
        convert_bundle_to_pack <twoside-boundary.bdl >twoside-boundary.pack &&
        pack=$(git index-pack --fix-thin --stdin <twoside-boundary.pack) &&
        test_bundle_object_count .git/objects/pack/pack-${pack##pack    }.pack 3
'

test_expect_success 'fetch --prune prints the remotes url' '
        git branch goodbye &&
        git clone . only-prunes &&
        git branch -D goodbye &&
        (
                cd only-prunes &&
                git fetch --prune origin 2>&1 | head -n1 >../actual
        ) &&
        echo "From ${D}/." >expect &&
        test_cmp expect actual
'

test_expect_success 'branchname D/F conflict resolved by --prune' '
        git branch dir/file &&
        git clone . prune-df-conflict &&
        git branch -D dir/file &&
        git branch dir &&
        (
                cd prune-df-conflict &&
                git fetch --prune &&
                git rev-parse origin/dir >../actual
        ) &&
        git rev-parse dir >expect &&
        test_cmp expect actual
'

test_expect_success 'fetching a one-level ref works' '
        test_commit extra &&
        git reset --hard HEAD^ &&
        git update-ref refs/foo extra &&
        git init one-level &&
        (
                cd one-level &&
                git fetch .. HEAD refs/foo
        )
'

test_expect_success 'fetching with auto-gc does not lock up' '
        write_script askyesno <<-\EOF &&
        echo "$*" &&
        false
        EOF
        git clone "file://$D" auto-gc &&
        test_commit test2 &&
        (
                cd auto-gc &&
                git config gc.autoPackLimit 1 &&
                GIT_ASK_YESNO="$D/askyesno" git fetch >fetch.out 2>&1 &&
                ! grep "Should I try again" fetch.out
        )
'

test_done