Merge branch 'ps/fetch-atomic'

[thirdparty/git.git] / t / t5510-fetch.sh

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

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

'

. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-bundle.sh

D=$(pwd)

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

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.main.remote one &&
                git config remote.one.url ../one/.git/ &&
                git config remote.one.fetch refs/heads/main:refs/heads/one
        ) &&
        git clone . three &&
        (
                cd three &&
                git config branch.main.remote two &&
                git config branch.main.merge refs/heads/one &&
                mkdir -p .git/remotes &&
                cat >.git/remotes/two <<-\EOF
                URL: ../two/.git/
                Pull: refs/heads/main:refs/heads/two
                Pull: refs/heads/one:refs/heads/one
                EOF
        ) &&
        git clone . bundle &&
        git clone . seven
'

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

test_expect_success "fetch test for-merge" '
        cd "$D" &&
        cd three &&
        git fetch &&
        git rev-parse --verify refs/heads/two &&
        git rev-parse --verify refs/heads/one &&
        main_in_two=$(cd ../two && git rev-parse main) &&
        one_in_two=$(cd ../two && git rev-parse one) &&
        {
                echo "$one_in_two       " &&
                echo "$main_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 main &&

        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 main &&

        git fetch --prune origin main &&
        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/main
'

test_expect_success 'fetch --prune handles overlapping refspecs' '
        cd "$D" &&
        git update-ref refs/pull/42/head main &&
        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/main &&
        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/main &&
        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 main &&
        # 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 main &&

        git fetch --prune --tags origin &&
        git rev-parse origin/main &&
        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 main &&
        git update-ref refs/remotes/origin/extrabranch main &&

        git fetch --prune --tags origin main &&
        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 main &&
        git update-ref refs/remotes/origin/foo/otherbranch main &&
        git update-ref refs/remotes/origin/extrabranch main &&

        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 REFFILES 'fetch --prune fails to delete branches' '
        cd "$D" &&
        git clone . prune-fail &&
        cd prune-fail &&
        git update-ref refs/remotes/origin/extrabranch main &&
        : this will prevent --prune from locking packed-refs for deleting refs, but adding loose refs still succeeds  &&
        >.git/packed-refs.new &&

        test_must_fail git fetch --prune origin
'

test_expect_success 'fetch --atomic works with a single branch' '
        test_when_finished "rm -rf \"$D\"/atomic" &&

        cd "$D" &&
        git clone . atomic &&
        git branch atomic-branch &&
        oid=$(git rev-parse atomic-branch) &&
        echo "$oid" >expected &&

        git -C atomic fetch --atomic origin &&
        git -C atomic rev-parse origin/atomic-branch >actual &&
        test_cmp expected actual &&
        test $oid = "$(git -C atomic rev-parse --verify FETCH_HEAD)"
'

test_expect_success 'fetch --atomic works with multiple branches' '
        test_when_finished "rm -rf \"$D\"/atomic" &&

        cd "$D" &&
        git clone . atomic &&
        git branch atomic-branch-1 &&
        git branch atomic-branch-2 &&
        git branch atomic-branch-3 &&
        git rev-parse refs/heads/atomic-branch-1 refs/heads/atomic-branch-2 refs/heads/atomic-branch-3 >actual &&

        git -C atomic fetch --atomic origin &&
        git -C atomic rev-parse refs/remotes/origin/atomic-branch-1 refs/remotes/origin/atomic-branch-2 refs/remotes/origin/atomic-branch-3 >expected &&
        test_cmp expected actual
'

test_expect_success 'fetch --atomic works with mixed branches and tags' '
        test_when_finished "rm -rf \"$D\"/atomic" &&

        cd "$D" &&
        git clone . atomic &&
        git branch atomic-mixed-branch &&
        git tag atomic-mixed-tag &&
        git rev-parse refs/heads/atomic-mixed-branch refs/tags/atomic-mixed-tag >actual &&

        git -C atomic fetch --tags --atomic origin &&
        git -C atomic rev-parse refs/remotes/origin/atomic-mixed-branch refs/tags/atomic-mixed-tag >expected &&
        test_cmp expected actual
'

test_expect_success 'fetch --atomic prunes references' '
        test_when_finished "rm -rf \"$D\"/atomic" &&

        cd "$D" &&
        git branch atomic-prune-delete &&
        git clone . atomic &&
        git branch --delete atomic-prune-delete &&
        git branch atomic-prune-create &&
        git rev-parse refs/heads/atomic-prune-create >actual &&

        git -C atomic fetch --prune --atomic origin &&
        test_must_fail git -C atomic rev-parse refs/remotes/origin/atomic-prune-delete &&
        git -C atomic rev-parse refs/remotes/origin/atomic-prune-create >expected &&
        test_cmp expected actual
'

test_expect_success 'fetch --atomic aborts with non-fast-forward update' '
        test_when_finished "rm -rf \"$D\"/atomic" &&

        cd "$D" &&
        git branch atomic-non-ff &&
        git clone . atomic &&
        git rev-parse HEAD >actual &&

        git branch atomic-new-branch &&
        parent_commit=$(git rev-parse atomic-non-ff~) &&
        git update-ref refs/heads/atomic-non-ff $parent_commit &&

        test_must_fail git -C atomic fetch --atomic origin refs/heads/*:refs/remotes/origin/* &&
        test_must_fail git -C atomic rev-parse refs/remotes/origin/atomic-new-branch &&
        git -C atomic rev-parse refs/remotes/origin/atomic-non-ff >expected &&
        test_cmp expected actual &&
        test_must_be_empty atomic/.git/FETCH_HEAD
'

test_expect_success 'fetch --atomic executes a single reference transaction only' '
        test_when_finished "rm -rf \"$D\"/atomic" &&

        cd "$D" &&
        git clone . atomic &&
        git branch atomic-hooks-1 &&
        git branch atomic-hooks-2 &&
        head_oid=$(git rev-parse HEAD) &&

        cat >expected <<-EOF &&
                prepared
                $ZERO_OID $head_oid refs/remotes/origin/atomic-hooks-1
                $ZERO_OID $head_oid refs/remotes/origin/atomic-hooks-2
                committed
                $ZERO_OID $head_oid refs/remotes/origin/atomic-hooks-1
                $ZERO_OID $head_oid refs/remotes/origin/atomic-hooks-2
        EOF

        rm -f atomic/actual &&
        write_script atomic/.git/hooks/reference-transaction <<-\EOF &&
                ( echo "$*" && cat ) >>actual
        EOF

        git -C atomic fetch --atomic origin &&
        test_cmp expected atomic/actual
'

test_expect_success 'fetch --atomic aborts all reference updates if hook aborts' '
        test_when_finished "rm -rf \"$D\"/atomic" &&

        cd "$D" &&
        git clone . atomic &&
        git branch atomic-hooks-abort-1 &&
        git branch atomic-hooks-abort-2 &&
        git branch atomic-hooks-abort-3 &&
        git tag atomic-hooks-abort &&
        head_oid=$(git rev-parse HEAD) &&

        cat >expected <<-EOF &&
                prepared
                $ZERO_OID $head_oid refs/remotes/origin/atomic-hooks-abort-1
                $ZERO_OID $head_oid refs/remotes/origin/atomic-hooks-abort-2
                $ZERO_OID $head_oid refs/remotes/origin/atomic-hooks-abort-3
                $ZERO_OID $head_oid refs/tags/atomic-hooks-abort
                aborted
                $ZERO_OID $head_oid refs/remotes/origin/atomic-hooks-abort-1
                $ZERO_OID $head_oid refs/remotes/origin/atomic-hooks-abort-2
                $ZERO_OID $head_oid refs/remotes/origin/atomic-hooks-abort-3
                $ZERO_OID $head_oid refs/tags/atomic-hooks-abort
        EOF

        rm -f atomic/actual &&
        write_script atomic/.git/hooks/reference-transaction <<-\EOF &&
                ( echo "$*" && cat ) >>actual
                exit 1
        EOF

        git -C atomic for-each-ref >expected-refs &&
        test_must_fail git -C atomic fetch --tags --atomic origin &&
        git -C atomic for-each-ref >actual-refs &&
        test_cmp expected-refs actual-refs &&
        test_must_be_empty atomic/.git/FETCH_HEAD
'

test_expect_success 'fetch --atomic --append appends to FETCH_HEAD' '
        test_when_finished "rm -rf \"$D\"/atomic" &&

        cd "$D" &&
        git clone . atomic &&
        oid=$(git rev-parse HEAD) &&

        git branch atomic-fetch-head-1 &&
        git -C atomic fetch --atomic origin atomic-fetch-head-1 &&
        test_line_count = 1 atomic/.git/FETCH_HEAD &&

        git branch atomic-fetch-head-2 &&
        git -C atomic fetch --atomic --append origin atomic-fetch-head-2 &&
        test_line_count = 2 atomic/.git/FETCH_HEAD &&
        cp atomic/.git/FETCH_HEAD expected &&

        write_script atomic/.git/hooks/reference-transaction <<-\EOF &&
                exit 1
        EOF

        git branch atomic-fetch-head-3 &&
        test_must_fail git -C atomic fetch --atomic --append origin atomic-fetch-head-3 &&
        test_cmp expected atomic/.git/FETCH_HEAD
'

test_expect_success 'fetch --atomic --prune executes a single reference transaction only' '
        test_when_finished "rm -rf \"$D\"/atomic" &&

        cd "$D" &&
        git branch scheduled-for-deletion &&
        git clone . atomic &&
        git branch -D scheduled-for-deletion &&
        git branch new-branch &&
        head_oid=$(git rev-parse HEAD) &&

        # Fetching with the `--atomic` flag should update all references in a
        # single transaction.
        cat >expected <<-EOF &&
                prepared
                $ZERO_OID $ZERO_OID refs/remotes/origin/scheduled-for-deletion
                $ZERO_OID $head_oid refs/remotes/origin/new-branch
                committed
                $ZERO_OID $ZERO_OID refs/remotes/origin/scheduled-for-deletion
                $ZERO_OID $head_oid refs/remotes/origin/new-branch
        EOF

        write_script atomic/.git/hooks/reference-transaction <<-\EOF &&
                ( echo "$*" && cat ) >>actual
        EOF

        git -C atomic fetch --atomic --prune origin &&
        test_cmp expected atomic/actual
'

test_expect_success '--refmap="" ignores configured refspec' '
        cd "$TRASH_DIRECTORY" &&
        git clone "$D" remote-refs &&
        git -C remote-refs rev-parse remotes/origin/main >old &&
        git -C remote-refs update-ref refs/remotes/origin/main main~1 &&
        git -C remote-refs rev-parse remotes/origin/main >new &&
        git -C remote-refs fetch --refmap= origin "+refs/heads/*:refs/hidden/origin/*" &&
        git -C remote-refs rev-parse remotes/origin/main >actual &&
        test_cmp new actual &&
        git -C remote-refs fetch origin &&
        git -C remote-refs rev-parse remotes/origin/main >actual &&
        test_cmp old actual
'

test_expect_success '--refmap="" and --prune' '
        git -C remote-refs update-ref refs/remotes/origin/foo/otherbranch main &&
        git -C remote-refs update-ref refs/hidden/foo/otherbranch main &&
        git -C remote-refs fetch --prune --refmap="" origin +refs/heads/*:refs/hidden/* &&
        git -C remote-refs rev-parse remotes/origin/foo/otherbranch &&
        test_must_fail git -C remote-refs rev-parse refs/hidden/foo/otherbranch &&
        git -C remote-refs fetch --prune origin &&
        test_must_fail git -C remote-refs rev-parse remotes/origin/foo/otherbranch
'

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

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 --version=3 bundle1 main^..main
'

test_expect_success 'header of bundle looks right' '
        cat >expect <<-EOF &&
        # v3 git bundle
        @object-format=$(test_oid algo)
        -OID updated by origin
        OID refs/heads/main

        EOF
        sed -e "s/$OID_REGEX/OID/g" -e "5q" "$D"/bundle1 >actual &&
        test_cmp expect actual
'

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

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


test_expect_success 'bundle 1 has only 3 files ' '
        cd "$D" &&
        test_bundle_object_count bundle1 3
'

test_expect_success 'unbundle 2' '
        cd "$D/bundle" &&
        git fetch ../bundle2 main:main &&
        test "tip" = "$(git log -1 --pretty=oneline main | cut -d" " -f2)"
'

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 &&
        test_bundle_object_count bundle3 3
'

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

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

'

test_expect_success 'fetch with a non-applying branch.<name>.merge' '
        git config branch.main.remote yeti &&
        git config branch.main.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=$(cd one && git symbolic-ref HEAD) &&
        git config branch.main.remote blub &&
        git config branch.main.merge "$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.main.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 &&
        grep "fatal: '\''a\\\\!'\''b'\''" result
'

test_expect_success 'bundle should record HEAD correctly' '

        cd "$D" &&
        git bundle create bundle5 HEAD main &&
        git bundle list-heads bundle5 >actual &&
        for h in HEAD refs/heads/main
        do
                echo "$(git rev-parse --verify $h) $h" || return 1
        done >expect &&
        test_cmp expect actual

'

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

test_expect_success 'explicit fetch should update tracking' '

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

test_expect_success 'explicit pull should update tracking' '

        cd "$D" &&
        git branch -f side &&
        (
                cd three &&
                git update-ref refs/remotes/origin/main base-origin-main &&
                o=$(git rev-parse --verify refs/remotes/origin/main) &&
                git pull origin main &&
                n=$(git rev-parse --verify refs/remotes/origin/main) &&
                test "$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 "$D" &&
        git branch -f side &&
        (
                cd three &&
                git update-ref refs/remotes/origin/main base-origin-main &&
                o=$(git rev-parse --verify refs/remotes/origin/main) &&
                git fetch --refmap="refs/heads/*:refs/remotes/other/*" origin main &&
                n=$(git rev-parse --verify refs/remotes/origin/main) &&
                test "$o" = "$n" &&
                test_must_fail git rev-parse --verify refs/remotes/origin/side &&
                git rev-parse --verify refs/remotes/other/main
        )
'

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

test_expect_success 'configured fetch updates tracking' '

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

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

test_expect_success 'refuse to fetch into the current branch' '

        test_must_fail git fetch . side:main

'

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

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

'

test_expect_success 'fetch --dry-run does not touch FETCH_HEAD, but still prints what would be written' '
        rm -f .git/FETCH_HEAD err &&
        git fetch --dry-run . 2>err &&
        ! test -f .git/FETCH_HEAD &&
        grep FETCH_HEAD err
'

test_expect_success '--no-write-fetch-head does not touch FETCH_HEAD, and does not print what would be written' '
        rm -f .git/FETCH_HEAD err &&
        git fetch --no-write-fetch-head . 2>err &&
        ! test -f .git/FETCH_HEAD &&
        ! grep FETCH_HEAD err
'

test_expect_success '--write-fetch-head gets defeated by --dry-run' '
        rm -f .git/FETCH_HEAD &&
        git fetch --dry-run --write-fetch-head . &&
        ! 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.main.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
        )
'

test_expect_success 'LHS of refspec follows ref disambiguation rules' '
        mkdir lhs-ambiguous &&
        (
                cd lhs-ambiguous &&
                git init server &&
                test_commit -C server unwanted &&
                test_commit -C server wanted &&

                git init client &&

                # Check a name coming after "refs" alphabetically ...
                git -C server update-ref refs/heads/s wanted &&
                git -C server update-ref refs/heads/refs/heads/s unwanted &&
                git -C client fetch ../server +refs/heads/s:refs/heads/checkthis &&
                git -C server rev-parse wanted >expect &&
                git -C client rev-parse checkthis >actual &&
                test_cmp expect actual &&

                # ... and one before.
                git -C server update-ref refs/heads/q wanted &&
                git -C server update-ref refs/heads/refs/heads/q unwanted &&
                git -C client fetch ../server +refs/heads/q:refs/heads/checkthis &&
                git -C server rev-parse wanted >expect &&
                git -C client rev-parse checkthis >actual &&
                test_cmp expect actual &&

                # Tags are preferred over branches like refs/{heads,tags}/*
                git -C server update-ref refs/tags/t wanted &&
                git -C server update-ref refs/heads/t unwanted &&
                git -C client fetch ../server +t:refs/heads/checkthis &&
                git -C server rev-parse wanted >expect &&
                git -C client rev-parse checkthis >actual
        )
'

test_expect_success 'fetch.writeCommitGraph' '
        git clone three write &&
        (
                cd three &&
                test_commit new
        ) &&
        (
                cd write &&
                git -c fetch.writeCommitGraph fetch origin &&
                test_path_is_file .git/objects/info/commit-graphs/commit-graph-chain
        )
'

test_expect_success 'fetch.writeCommitGraph with submodules' '
        git clone dups super &&
        (
                cd super &&
                git submodule add "file://$TRASH_DIRECTORY/three" &&
                git commit -m "add submodule"
        ) &&
        git clone "super" super-clone &&
        (
                cd super-clone &&
                rm -rf .git/objects/info &&
                git -c fetch.writeCommitGraph=true fetch origin &&
                test_path_is_file .git/objects/info/commit-graphs/commit-graph-chain
        )
'

# configured prune tests

set_config_tristate () {
        # var=$1 val=$2
        case "$2" in
        unset)
                test_unconfig "$1"
                ;;
        *)
                git config "$1" "$2"
                key=$(echo $1 | sed -e 's/^remote\.origin/fetch/')
                git_fetch_c="$git_fetch_c -c $key=$2"
                ;;
        esac
}

test_configured_prune () {
        test_configured_prune_type "$@" "name"
        test_configured_prune_type "$@" "link"
}

test_configured_prune_type () {
        fetch_prune=$1
        remote_origin_prune=$2
        fetch_prune_tags=$3
        remote_origin_prune_tags=$4
        expected_branch=$5
        expected_tag=$6
        cmdline=$7
        mode=$8

        if test -z "$cmdline_setup"
        then
                test_expect_success 'setup cmdline_setup variable for subsequent test' '
                        remote_url="file://$(git -C one config remote.origin.url)" &&
                        remote_fetch="$(git -C one config remote.origin.fetch)" &&
                        cmdline_setup="\"$remote_url\" \"$remote_fetch\""
                '
        fi

        if test "$mode" = 'link'
        then
                new_cmdline=""

                if test "$cmdline" = ""
                then
                        new_cmdline=$cmdline_setup
                else
                        new_cmdline=$(printf "%s" "$cmdline" | perl -pe 's[origin(?!/)]["'"$remote_url"'"]g')
                fi

                if test "$fetch_prune_tags" = 'true' ||
                   test "$remote_origin_prune_tags" = 'true'
                then
                        if ! printf '%s' "$cmdline\n" | grep -q refs/remotes/origin/
                        then
                                new_cmdline="$new_cmdline refs/tags/*:refs/tags/*"
                        fi
                fi

                cmdline="$new_cmdline"
        fi

        test_expect_success "$mode prune fetch.prune=$1 remote.origin.prune=$2 fetch.pruneTags=$3 remote.origin.pruneTags=$4${7:+ $7}; branch:$5 tag:$6" '
                # make sure a newbranch is there in . and also in one
                git branch -f newbranch &&
                git tag -f newtag &&
                (
                        cd one &&
                        test_unconfig fetch.prune &&
                        test_unconfig fetch.pruneTags &&
                        test_unconfig remote.origin.prune &&
                        test_unconfig remote.origin.pruneTags &&
                        git fetch '"$cmdline_setup"' &&
                        git rev-parse --verify refs/remotes/origin/newbranch &&
                        git rev-parse --verify refs/tags/newtag
                ) &&

                # now remove them
                git branch -d newbranch &&
                git tag -d newtag &&

                # then test
                (
                        cd one &&
                        git_fetch_c="" &&
                        set_config_tristate fetch.prune $fetch_prune &&
                        set_config_tristate fetch.pruneTags $fetch_prune_tags &&
                        set_config_tristate remote.origin.prune $remote_origin_prune &&
                        set_config_tristate remote.origin.pruneTags $remote_origin_prune_tags &&

                        if test "$mode" != "link"
                        then
                                git_fetch_c=""
                        fi &&
                        git$git_fetch_c fetch '"$cmdline"' &&
                        case "$expected_branch" in
                        pruned)
                                test_must_fail git rev-parse --verify refs/remotes/origin/newbranch
                                ;;
                        kept)
                                git rev-parse --verify refs/remotes/origin/newbranch
                                ;;
                        esac &&
                        case "$expected_tag" in
                        pruned)
                                test_must_fail git rev-parse --verify refs/tags/newtag
                                ;;
                        kept)
                                git rev-parse --verify refs/tags/newtag
                                ;;
                        esac
                )
        '
}

# $1 config: fetch.prune
# $2 config: remote.<name>.prune
# $3 config: fetch.pruneTags
# $4 config: remote.<name>.pruneTags
# $5 expect: branch to be pruned?
# $6 expect: tag to be pruned?
# $7 git-fetch $cmdline:
#
#                     $1    $2    $3    $4    $5     $6     $7
test_configured_prune unset unset unset unset kept   kept   ""
test_configured_prune unset unset unset unset kept   kept   "--no-prune"
test_configured_prune unset unset unset unset pruned kept   "--prune"
test_configured_prune unset unset unset unset kept   pruned \
        "--prune origin refs/tags/*:refs/tags/*"
test_configured_prune unset unset unset unset pruned pruned \
        "--prune origin refs/tags/*:refs/tags/* +refs/heads/*:refs/remotes/origin/*"

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

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

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

test_configured_prune false false unset unset kept   kept   ""
test_configured_prune false false unset unset kept   kept   "--no-prune"
test_configured_prune false false unset unset pruned kept   "--prune"
test_configured_prune false false unset unset kept   pruned \
        "--prune origin refs/tags/*:refs/tags/*"
test_configured_prune false false unset unset pruned pruned \
        "--prune origin refs/tags/*:refs/tags/* +refs/heads/*:refs/remotes/origin/*"

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

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

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

test_configured_prune true  true  unset unset pruned kept   ""
test_configured_prune true  true  unset unset pruned kept   "--prune"
test_configured_prune true  true  unset unset kept   kept   "--no-prune"
test_configured_prune true  true  unset unset kept   pruned \
        "--prune origin refs/tags/*:refs/tags/*"
test_configured_prune true  true  unset unset pruned pruned \
        "--prune origin refs/tags/*:refs/tags/* +refs/heads/*:refs/remotes/origin/*"

# --prune-tags on its own does nothing, needs --prune as well, same
# for fetch.pruneTags without fetch.prune
test_configured_prune unset unset unset unset kept kept     "--prune-tags"
test_configured_prune unset unset true unset  kept kept     ""
test_configured_prune unset unset unset true  kept kept     ""

# These will prune the tags
test_configured_prune unset unset unset unset pruned pruned "--prune --prune-tags"
test_configured_prune true  unset true  unset pruned pruned ""
test_configured_prune unset true  unset true  pruned pruned ""

# remote.<name>.pruneTags overrides fetch.pruneTags, just like
# remote.<name>.prune overrides fetch.prune if set.
test_configured_prune true  unset true unset pruned pruned  ""
test_configured_prune false true  false true  pruned pruned ""
test_configured_prune true  false true  false kept   kept   ""

# When --prune-tags is supplied it's ignored if an explicit refspec is
# given, same for the configuration options.
test_configured_prune unset unset unset unset pruned kept \
        "--prune --prune-tags origin +refs/heads/*:refs/remotes/origin/*"
test_configured_prune unset unset true  unset pruned kept \
        "--prune origin +refs/heads/*:refs/remotes/origin/*"
test_configured_prune unset unset unset true pruned  kept \
        "--prune origin +refs/heads/*:refs/remotes/origin/*"

# Pruning that also takes place if a file:// url replaces a named
# remote. However, because there's no implicit
# +refs/heads/*:refs/remotes/origin/* refspec and supplying it on the
# command-line negates --prune-tags, the branches will not be pruned.
test_configured_prune_type unset unset unset unset kept   kept   "origin --prune-tags" "name"
test_configured_prune_type unset unset unset unset kept   kept   "origin --prune-tags" "link"
test_configured_prune_type unset unset unset unset pruned pruned "origin --prune --prune-tags" "name"
test_configured_prune_type unset unset unset unset kept   pruned "origin --prune --prune-tags" "link"
test_configured_prune_type unset unset unset unset pruned pruned "--prune --prune-tags origin" "name"
test_configured_prune_type unset unset unset unset kept   pruned "--prune --prune-tags origin" "link"
test_configured_prune_type unset unset true  unset pruned pruned "--prune origin" "name"
test_configured_prune_type unset unset true  unset kept   pruned "--prune origin" "link"
test_configured_prune_type unset unset unset true  pruned pruned "--prune origin" "name"
test_configured_prune_type unset unset unset true  kept   pruned "--prune origin" "link"
test_configured_prune_type true  unset true  unset pruned pruned "origin" "name"
test_configured_prune_type true  unset true  unset kept   pruned "origin" "link"
test_configured_prune_type unset  true true  unset pruned pruned "origin" "name"
test_configured_prune_type unset  true true  unset kept   pruned "origin" "link"
test_configured_prune_type unset  true unset true  pruned pruned "origin" "name"
test_configured_prune_type unset  true unset true  kept   pruned "origin" "link"

# When all remote.origin.fetch settings are deleted a --prune
# --prune-tags still implicitly supplies refs/tags/*:refs/tags/* so
# tags, but not tracking branches, will be deleted.
test_expect_success 'remove remote.origin.fetch "one"' '
        (
                cd one &&
                git config --unset-all remote.origin.fetch
        )
'
test_configured_prune_type unset unset unset unset kept pruned "origin --prune --prune-tags" "name"
test_configured_prune_type unset unset unset unset kept pruned "origin --prune --prune-tags" "link"

test_expect_success 'all boundary commits are excluded' '
        test_commit base &&
        test_commit oneside &&
        git checkout HEAD^ &&
        test_commit otherside &&
        git checkout main &&
        test_tick &&
        git merge otherside &&
        ad=$(git log --no-walk --format=%ad HEAD) &&
        git bundle create twoside-boundary.bdl main --since="$ad" &&
        test_bundle_object_count --thin twoside-boundary.bdl 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 fetch.unpackLimit 1 &&
                git config gc.autoPackLimit 1 &&
                git config gc.autoDetach false &&
                GIT_ASK_YESNO="$D/askyesno" git fetch --verbose >fetch.out 2>&1 &&
                test_i18ngrep "Auto packing the repository" fetch.out &&
                ! grep "Should I try again" fetch.out
        )
'

test_expect_success 'fetch aligned output' '
        git clone . full-output &&
        test_commit looooooooooooong-tag &&
        (
                cd full-output &&
                git -c fetch.output=full fetch origin >actual 2>&1 &&
                grep -e "->" actual | cut -c 22- >../actual
        ) &&
        cat >expect <<-\EOF &&
        main                 -> origin/main
        looooooooooooong-tag -> looooooooooooong-tag
        EOF
        test_cmp expect actual
'

test_expect_success 'fetch compact output' '
        git clone . compact &&
        test_commit extraaa &&
        (
                cd compact &&
                git -c fetch.output=compact fetch origin >actual 2>&1 &&
                grep -e "->" actual | cut -c 22- >../actual
        ) &&
        cat >expect <<-\EOF &&
        main       -> origin/*
        extraaa    -> *
        EOF
        test_cmp expect actual
'

test_expect_success '--no-show-forced-updates' '
        mkdir forced-updates &&
        (
                cd forced-updates &&
                git init &&
                test_commit 1 &&
                test_commit 2
        ) &&
        git clone forced-updates forced-update-clone &&
        git clone forced-updates no-forced-update-clone &&
        git -C forced-updates reset --hard HEAD~1 &&
        (
                cd forced-update-clone &&
                git fetch --show-forced-updates origin 2>output &&
                test_i18ngrep "(forced update)" output
        ) &&
        (
                cd no-forced-update-clone &&
                git fetch --no-show-forced-updates origin 2>output &&
                test_i18ngrep ! "(forced update)" output
        )
'

setup_negotiation_tip () {
        SERVER="$1"
        URL="$2"
        USE_PROTOCOL_V2="$3"

        rm -rf "$SERVER" client trace &&
        git init -b main "$SERVER" &&
        test_commit -C "$SERVER" alpha_1 &&
        test_commit -C "$SERVER" alpha_2 &&
        git -C "$SERVER" checkout --orphan beta &&
        test_commit -C "$SERVER" beta_1 &&
        test_commit -C "$SERVER" beta_2 &&

        git clone "$URL" client &&

        if test "$USE_PROTOCOL_V2" -eq 1
        then
                git -C "$SERVER" config protocol.version 2 &&
                git -C client config protocol.version 2
        fi &&

        test_commit -C "$SERVER" beta_s &&
        git -C "$SERVER" checkout main &&
        test_commit -C "$SERVER" alpha_s &&
        git -C "$SERVER" tag -d alpha_1 alpha_2 beta_1 beta_2
}

check_negotiation_tip () {
        # Ensure that {alpha,beta}_1 are sent as "have", but not {alpha_beta}_2
        ALPHA_1=$(git -C client rev-parse alpha_1) &&
        grep "fetch> have $ALPHA_1" trace &&
        BETA_1=$(git -C client rev-parse beta_1) &&
        grep "fetch> have $BETA_1" trace &&
        ALPHA_2=$(git -C client rev-parse alpha_2) &&
        ! grep "fetch> have $ALPHA_2" trace &&
        BETA_2=$(git -C client rev-parse beta_2) &&
        ! grep "fetch> have $BETA_2" trace
}

test_expect_success '--negotiation-tip limits "have" lines sent' '
        setup_negotiation_tip server server 0 &&
        GIT_TRACE_PACKET="$(pwd)/trace" git -C client fetch \
                --negotiation-tip=alpha_1 --negotiation-tip=beta_1 \
                origin alpha_s beta_s &&
        check_negotiation_tip
'

test_expect_success '--negotiation-tip understands globs' '
        setup_negotiation_tip server server 0 &&
        GIT_TRACE_PACKET="$(pwd)/trace" git -C client fetch \
                --negotiation-tip=*_1 \
                origin alpha_s beta_s &&
        check_negotiation_tip
'

test_expect_success '--negotiation-tip understands abbreviated SHA-1' '
        setup_negotiation_tip server server 0 &&
        GIT_TRACE_PACKET="$(pwd)/trace" git -C client fetch \
                --negotiation-tip=$(git -C client rev-parse --short alpha_1) \
                --negotiation-tip=$(git -C client rev-parse --short beta_1) \
                origin alpha_s beta_s &&
        check_negotiation_tip
'

test_expect_success '--negotiation-tip rejects missing OIDs' '
        setup_negotiation_tip server server 0 &&
        test_must_fail git -C client fetch \
                --negotiation-tip=alpha_1 \
                --negotiation-tip=$(test_oid zero) \
                origin alpha_s beta_s 2>err &&
        cat >fatal-expect <<-EOF &&
        fatal: the object $(test_oid zero) does not exist
EOF
        grep fatal: err >fatal-actual &&
        test_cmp fatal-expect fatal-actual
'

. "$TEST_DIRECTORY"/lib-httpd.sh
start_httpd

test_expect_success '--negotiation-tip limits "have" lines sent with HTTP protocol v2' '
        setup_negotiation_tip "$HTTPD_DOCUMENT_ROOT_PATH/server" \
                "$HTTPD_URL/smart/server" 1 &&
        GIT_TRACE_PACKET="$(pwd)/trace" git -C client fetch \
                --negotiation-tip=alpha_1 --negotiation-tip=beta_1 \
                origin alpha_s beta_s &&
        check_negotiation_tip
'

# DO NOT add non-httpd-specific tests here, because the last part of this
# test script is only executed when httpd is available and enabled.

test_done