git/t/t5526-fetch-submodules.sh
Patrick Steinhardt 7a746904a9 t5526: break test submodule differently
In 10f5c52656 (submodule: avoid auto-discovery in
prepare_submodule_repo_env(), 2016-09-01) we fixed a bug when doing a
recursive fetch with submodule in the case where the submodule is broken
due to whatever reason. The test to exercise that the fix works breaks
the submodule by deleting its `HEAD` reference, which will cause us to
not detect the directory as a Git repository.

While this is perfectly fine in theory, this way of breaking the repo
becomes problematic with the current efforts to introduce another refdb
backend into Git. The new reftable backend has a stub HEAD file that
always contains "ref: refs/heads/.invalid" so that tools continue to be
able to detect such a repository. But as the reftable backend will never
delete this file even when asked to delete `HEAD` the current way to
delete the `HEAD` reference will stop working.

Adapt the code to instead delete the objects database. Going back with
this new way to cause breakage confirms that it triggers the infinite
recursion just the same, and there are no equivalent ongoing efforts to
replace the object database with an alternate backend.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Reviewed-by: Christian Couder <christian.couder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-01-29 13:54:33 -08:00

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#!/bin/sh
# Copyright (c) 2010, Jens Lehmann
test_description='Recursive "git fetch" for submodules'
GIT_TEST_FATAL_REGISTER_SUBMODULE_ODB=1
export GIT_TEST_FATAL_REGISTER_SUBMODULE_ODB
. ./test-lib.sh
pwd=$(pwd)
write_expected_sub () {
NEW_HEAD=$1 &&
SUPER_HEAD=$2 &&
cat >"$pwd/expect.err.sub" <<-EOF
Fetching submodule submodule${SUPER_HEAD:+ at commit $SUPER_HEAD}
From $pwd/submodule
OLD_HEAD..$NEW_HEAD sub -> origin/sub
EOF
}
write_expected_sub2 () {
NEW_HEAD=$1 &&
SUPER_HEAD=$2 &&
cat >"$pwd/expect.err.sub2" <<-EOF
Fetching submodule submodule2${SUPER_HEAD:+ at commit $SUPER_HEAD}
From $pwd/submodule2
OLD_HEAD..$NEW_HEAD sub2 -> origin/sub2
EOF
}
write_expected_deep () {
NEW_HEAD=$1 &&
SUB_HEAD=$2 &&
cat >"$pwd/expect.err.deep" <<-EOF
Fetching submodule submodule/subdir/deepsubmodule${SUB_HEAD:+ at commit $SUB_HEAD}
From $pwd/deepsubmodule
OLD_HEAD..$NEW_HEAD deep -> origin/deep
EOF
}
write_expected_super () {
NEW_HEAD=$1 &&
cat >"$pwd/expect.err.super" <<-EOF
From $pwd/.
OLD_HEAD..$NEW_HEAD super -> origin/super
EOF
}
# For each submodule in the test setup, this creates a commit and writes
# a file that contains the expected err if that new commit were fetched.
# These output files get concatenated in the right order by
# verify_fetch_result().
add_submodule_commits () {
(
cd submodule &&
echo new >> subfile &&
test_tick &&
git add subfile &&
git commit -m new subfile &&
new_head=$(git rev-parse --short HEAD) &&
write_expected_sub $new_head
) &&
(
cd deepsubmodule &&
echo new >> deepsubfile &&
test_tick &&
git add deepsubfile &&
git commit -m new deepsubfile &&
new_head=$(git rev-parse --short HEAD) &&
write_expected_deep $new_head
)
}
# For each superproject in the test setup, update its submodule, add the
# submodule and create a new commit with the submodule change.
#
# This requires add_submodule_commits() to be called first, otherwise
# the submodules will not have changed and cannot be "git add"-ed.
add_superproject_commits () {
(
cd submodule &&
(
cd subdir/deepsubmodule &&
git fetch &&
git checkout -q FETCH_HEAD
) &&
git add subdir/deepsubmodule &&
git commit -m "new deep submodule"
) &&
git add submodule &&
git commit -m "new submodule" &&
super_head=$(git rev-parse --short HEAD) &&
sub_head=$(git -C submodule rev-parse --short HEAD) &&
write_expected_super $super_head &&
write_expected_sub $sub_head
}
# Verifies that the expected repositories were fetched. This is done by
# concatenating the files expect.err.[super|sub|deep] in the correct
# order and comparing it to the actual stderr.
#
# If a repo should not be fetched in the test, its corresponding
# expect.err file should be rm-ed.
verify_fetch_result () {
ACTUAL_ERR=$1 &&
rm -f expect.err.combined &&
if test -f expect.err.super
then
cat expect.err.super >>expect.err.combined
fi &&
if test -f expect.err.sub
then
cat expect.err.sub >>expect.err.combined
fi &&
if test -f expect.err.deep
then
cat expect.err.deep >>expect.err.combined
fi &&
if test -f expect.err.sub2
then
cat expect.err.sub2 >>expect.err.combined
fi &&
sed -e 's/[0-9a-f][0-9a-f]*\.\./OLD_HEAD\.\./' "$ACTUAL_ERR" >actual.err.cmp &&
test_cmp expect.err.combined actual.err.cmp
}
test_expect_success setup '
git config --global protocol.file.allow always &&
mkdir deepsubmodule &&
(
cd deepsubmodule &&
git init &&
echo deepsubcontent > deepsubfile &&
git add deepsubfile &&
git commit -m new deepsubfile &&
git branch -M deep
) &&
mkdir submodule &&
(
cd submodule &&
git init &&
echo subcontent > subfile &&
git add subfile &&
git submodule add "$pwd/deepsubmodule" subdir/deepsubmodule &&
git commit -a -m new &&
git branch -M sub
) &&
git submodule add "$pwd/submodule" submodule &&
git commit -am initial &&
git branch -M super &&
git clone . downstream &&
(
cd downstream &&
git submodule update --init --recursive
)
'
test_expect_success "fetch --recurse-submodules recurses into submodules" '
add_submodule_commits &&
(
cd downstream &&
git fetch --recurse-submodules >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
verify_fetch_result actual.err
'
test_expect_success "fetch --recurse-submodules honors --no-write-fetch-head" '
(
cd downstream &&
git submodule foreach --recursive \
sh -c "cd \"\$(git rev-parse --git-dir)\" && rm -f FETCH_HEAD" &&
git fetch --recurse-submodules --no-write-fetch-head &&
git submodule foreach --recursive \
sh -c "cd \"\$(git rev-parse --git-dir)\" && ! test -f FETCH_HEAD"
)
'
test_expect_success "submodule.recurse option triggers recursive fetch" '
add_submodule_commits &&
(
cd downstream &&
git -c submodule.recurse fetch >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
verify_fetch_result actual.err
'
test_expect_success "fetch --recurse-submodules -j2 has the same output behaviour" '
test_when_finished "rm -f trace.out" &&
add_submodule_commits &&
(
cd downstream &&
GIT_TRACE="$TRASH_DIRECTORY/trace.out" git fetch --recurse-submodules -j2 2>../actual.err
) &&
test_must_be_empty actual.out &&
verify_fetch_result actual.err &&
grep "2 tasks" trace.out
'
test_expect_success "fetch alone only fetches superproject" '
add_submodule_commits &&
(
cd downstream &&
git fetch >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
test_must_be_empty actual.err
'
test_expect_success "fetch --no-recurse-submodules only fetches superproject" '
(
cd downstream &&
git fetch --no-recurse-submodules >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
test_must_be_empty actual.err
'
test_expect_success "using fetchRecurseSubmodules=true in .gitmodules recurses into submodules" '
(
cd downstream &&
git config -f .gitmodules submodule.submodule.fetchRecurseSubmodules true &&
git fetch >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
verify_fetch_result actual.err
'
test_expect_success "--no-recurse-submodules overrides .gitmodules config" '
add_submodule_commits &&
(
cd downstream &&
git fetch --no-recurse-submodules >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
test_must_be_empty actual.err
'
test_expect_success "using fetchRecurseSubmodules=false in .git/config overrides setting in .gitmodules" '
(
cd downstream &&
git config submodule.submodule.fetchRecurseSubmodules false &&
git fetch >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
test_must_be_empty actual.err
'
test_expect_success "--recurse-submodules overrides fetchRecurseSubmodules setting from .git/config" '
(
cd downstream &&
git fetch --recurse-submodules >../actual.out 2>../actual.err &&
git config --unset -f .gitmodules submodule.submodule.fetchRecurseSubmodules &&
git config --unset submodule.submodule.fetchRecurseSubmodules
) &&
test_must_be_empty actual.out &&
verify_fetch_result actual.err
'
test_expect_success "--quiet propagates to submodules" '
(
cd downstream &&
git fetch --recurse-submodules --quiet >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
test_must_be_empty actual.err
'
test_expect_success "--quiet propagates to parallel submodules" '
(
cd downstream &&
git fetch --recurse-submodules -j 2 --quiet >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
test_must_be_empty actual.err
'
test_expect_success "--dry-run propagates to submodules" '
add_submodule_commits &&
(
cd downstream &&
git fetch --recurse-submodules --dry-run >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
verify_fetch_result actual.err
'
test_expect_success "Without --dry-run propagates to submodules" '
(
cd downstream &&
git fetch --recurse-submodules >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
verify_fetch_result actual.err
'
test_expect_success "recurseSubmodules=true propagates into submodules" '
add_submodule_commits &&
(
cd downstream &&
git config fetch.recurseSubmodules true &&
git fetch >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
verify_fetch_result actual.err
'
test_expect_success "--recurse-submodules overrides config in submodule" '
add_submodule_commits &&
(
cd downstream &&
(
cd submodule &&
git config fetch.recurseSubmodules false
) &&
git fetch --recurse-submodules >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
verify_fetch_result actual.err
'
test_expect_success "--no-recurse-submodules overrides config setting" '
add_submodule_commits &&
(
cd downstream &&
git config fetch.recurseSubmodules true &&
git fetch --no-recurse-submodules >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
test_must_be_empty actual.err
'
test_expect_success "Recursion doesn't happen when no new commits are fetched in the superproject" '
(
cd downstream &&
(
cd submodule &&
git config --unset fetch.recurseSubmodules
) &&
git config --unset fetch.recurseSubmodules &&
git fetch >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
test_must_be_empty actual.err
'
test_expect_success "Recursion stops when no new submodule commits are fetched" '
git add submodule &&
git commit -m "new submodule" &&
new_head=$(git rev-parse --short HEAD) &&
write_expected_super $new_head &&
rm expect.err.deep &&
(
cd downstream &&
git fetch >../actual.out 2>../actual.err
) &&
verify_fetch_result actual.err &&
test_must_be_empty actual.out
'
test_expect_success "Recursion doesn't happen when new superproject commits don't change any submodules" '
add_submodule_commits &&
echo a > file &&
git add file &&
git commit -m "new file" &&
new_head=$(git rev-parse --short HEAD) &&
write_expected_super $new_head &&
rm expect.err.sub &&
rm expect.err.deep &&
(
cd downstream &&
git fetch >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
verify_fetch_result actual.err
'
test_expect_success "Recursion picks up config in submodule" '
(
cd downstream &&
git fetch --recurse-submodules &&
(
cd submodule &&
git config fetch.recurseSubmodules true
)
) &&
add_submodule_commits &&
git add submodule &&
git commit -m "new submodule" &&
new_head=$(git rev-parse --short HEAD) &&
write_expected_super $new_head &&
(
cd downstream &&
git fetch >../actual.out 2>../actual.err &&
(
cd submodule &&
git config --unset fetch.recurseSubmodules
)
) &&
verify_fetch_result actual.err &&
test_must_be_empty actual.out
'
test_expect_success "Recursion picks up all submodules when necessary" '
add_submodule_commits &&
add_superproject_commits &&
(
cd downstream &&
git fetch >../actual.out 2>../actual.err
) &&
verify_fetch_result actual.err &&
test_must_be_empty actual.out
'
test_expect_success "'--recurse-submodules=on-demand' doesn't recurse when no new commits are fetched in the superproject (and ignores config)" '
add_submodule_commits &&
(
cd downstream &&
git config fetch.recurseSubmodules true &&
git fetch --recurse-submodules=on-demand >../actual.out 2>../actual.err &&
git config --unset fetch.recurseSubmodules
) &&
test_must_be_empty actual.out &&
test_must_be_empty actual.err
'
test_expect_success "'--recurse-submodules=on-demand' recurses as deep as necessary (and ignores config)" '
add_submodule_commits &&
add_superproject_commits &&
(
cd downstream &&
git config fetch.recurseSubmodules false &&
(
cd submodule &&
git config -f .gitmodules submodule.subdir/deepsubmodule.fetchRecursive false
) &&
git fetch --recurse-submodules=on-demand >../actual.out 2>../actual.err &&
git config --unset fetch.recurseSubmodules &&
(
cd submodule &&
git config --unset -f .gitmodules submodule.subdir/deepsubmodule.fetchRecursive
)
) &&
test_must_be_empty actual.out &&
verify_fetch_result actual.err
'
# These tests verify that we can fetch submodules that aren't in the
# index.
#
# First, test the simple case where the index is empty and we only fetch
# submodules that are not in the index.
test_expect_success 'setup downstream branch without submodules' '
(
cd downstream &&
git checkout --recurse-submodules -b no-submodules &&
git rm .gitmodules &&
git rm submodule &&
git commit -m "no submodules" &&
git checkout --recurse-submodules super
)
'
test_expect_success "'--recurse-submodules=on-demand' should fetch submodule commits if the submodule is changed but the index has no submodules" '
add_submodule_commits &&
add_superproject_commits &&
# Fetch the new superproject commit
(
cd downstream &&
git switch --recurse-submodules no-submodules &&
git fetch --recurse-submodules=on-demand >../actual.out 2>../actual.err
) &&
super_head=$(git rev-parse --short HEAD) &&
sub_head=$(git -C submodule rev-parse --short HEAD) &&
deep_head=$(git -C submodule/subdir/deepsubmodule rev-parse --short HEAD) &&
# assert that these are fetched from commits, not the index
write_expected_sub $sub_head $super_head &&
write_expected_deep $deep_head $sub_head &&
test_must_be_empty actual.out &&
verify_fetch_result actual.err
'
test_expect_success "'--recurse-submodules' should fetch submodule commits if the submodule is changed but the index has no submodules" '
add_submodule_commits &&
add_superproject_commits &&
# Fetch the new superproject commit
(
cd downstream &&
git switch --recurse-submodules no-submodules &&
git fetch --recurse-submodules >../actual.out 2>../actual.err
) &&
super_head=$(git rev-parse --short HEAD) &&
sub_head=$(git -C submodule rev-parse --short HEAD) &&
deep_head=$(git -C submodule/subdir/deepsubmodule rev-parse --short HEAD) &&
# assert that these are fetched from commits, not the index
write_expected_sub $sub_head $super_head &&
write_expected_deep $deep_head $sub_head &&
test_must_be_empty actual.out &&
verify_fetch_result actual.err
'
test_expect_success "'--recurse-submodules' should ignore changed, inactive submodules" '
add_submodule_commits &&
add_superproject_commits &&
# Fetch the new superproject commit
(
cd downstream &&
git switch --recurse-submodules no-submodules &&
git -c submodule.submodule.active=false fetch --recurse-submodules >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
super_head=$(git rev-parse --short HEAD) &&
write_expected_super $super_head &&
# Neither should be fetched because the submodule is inactive
rm expect.err.sub &&
rm expect.err.deep &&
verify_fetch_result actual.err
'
# Now that we know we can fetch submodules that are not in the index,
# test that we can fetch index and non-index submodules in the same
# operation.
test_expect_success 'setup downstream branch with other submodule' '
mkdir submodule2 &&
(
cd submodule2 &&
git init &&
echo sub2content >sub2file &&
git add sub2file &&
git commit -a -m new &&
git branch -M sub2
) &&
git checkout -b super-sub2-only &&
git submodule add "$pwd/submodule2" submodule2 &&
git commit -m "add sub2" &&
git checkout super &&
(
cd downstream &&
git fetch --recurse-submodules origin &&
git checkout super-sub2-only &&
# Explicitly run "git submodule update" because sub2 is new
# and has not been cloned.
git submodule update --init &&
git checkout --recurse-submodules super
)
'
test_expect_success "'--recurse-submodules' should fetch submodule commits in changed submodules and the index" '
test_when_finished "rm expect.err.sub2" &&
# Create new commit in origin/super
add_submodule_commits &&
add_superproject_commits &&
# Create new commit in origin/super-sub2-only
git checkout super-sub2-only &&
(
cd submodule2 &&
test_commit --no-tag foo
) &&
git add submodule2 &&
git commit -m "new submodule2" &&
git checkout super &&
(
cd downstream &&
git fetch --recurse-submodules >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
sub2_head=$(git -C submodule2 rev-parse --short HEAD) &&
super_head=$(git rev-parse --short super) &&
super_sub2_only_head=$(git rev-parse --short super-sub2-only) &&
write_expected_sub2 $sub2_head $super_sub2_only_head &&
# write_expected_super cannot handle >1 branch. Since this is a
# one-off, construct expect.err.super manually.
cat >"$pwd/expect.err.super" <<-EOF &&
From $pwd/.
OLD_HEAD..$super_head super -> origin/super
OLD_HEAD..$super_sub2_only_head super-sub2-only -> origin/super-sub2-only
EOF
verify_fetch_result actual.err
'
test_expect_success "'--recurse-submodules=on-demand' stops when no new submodule commits are found in the superproject (and ignores config)" '
add_submodule_commits &&
echo a >> file &&
git add file &&
git commit -m "new file" &&
new_head=$(git rev-parse --short HEAD) &&
write_expected_super $new_head &&
rm expect.err.sub &&
rm expect.err.deep &&
(
cd downstream &&
git fetch --recurse-submodules=on-demand >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
verify_fetch_result actual.err
'
test_expect_success "'fetch.recurseSubmodules=on-demand' overrides global config" '
(
cd downstream &&
git fetch --recurse-submodules
) &&
add_submodule_commits &&
git config --global fetch.recurseSubmodules false &&
git add submodule &&
git commit -m "new submodule" &&
new_head=$(git rev-parse --short HEAD) &&
write_expected_super $new_head &&
rm expect.err.deep &&
(
cd downstream &&
git config fetch.recurseSubmodules on-demand &&
git fetch >../actual.out 2>../actual.err
) &&
git config --global --unset fetch.recurseSubmodules &&
(
cd downstream &&
git config --unset fetch.recurseSubmodules
) &&
test_must_be_empty actual.out &&
verify_fetch_result actual.err
'
test_expect_success "'submodule.<sub>.fetchRecurseSubmodules=on-demand' overrides fetch.recurseSubmodules" '
(
cd downstream &&
git fetch --recurse-submodules
) &&
add_submodule_commits &&
git config fetch.recurseSubmodules false &&
git add submodule &&
git commit -m "new submodule" &&
new_head=$(git rev-parse --short HEAD) &&
write_expected_super $new_head &&
rm expect.err.deep &&
(
cd downstream &&
git config submodule.submodule.fetchRecurseSubmodules on-demand &&
git fetch >../actual.out 2>../actual.err
) &&
git config --unset fetch.recurseSubmodules &&
(
cd downstream &&
git config --unset submodule.submodule.fetchRecurseSubmodules
) &&
test_must_be_empty actual.out &&
verify_fetch_result actual.err
'
test_expect_success "don't fetch submodule when newly recorded commits are already present" '
(
cd submodule &&
git checkout -q HEAD^^
) &&
git add submodule &&
git commit -m "submodule rewound" &&
new_head=$(git rev-parse --short HEAD) &&
write_expected_super $new_head &&
rm expect.err.sub &&
# This file does not exist, but rm -f for readability
rm -f expect.err.deep &&
(
cd downstream &&
git fetch >../actual.out 2>../actual.err
) &&
test_must_be_empty actual.out &&
verify_fetch_result actual.err &&
(
cd submodule &&
git checkout -q sub
)
'
test_expect_success "'fetch.recurseSubmodules=on-demand' works also without .gitmodules entry" '
(
cd downstream &&
git fetch --recurse-submodules
) &&
add_submodule_commits &&
git add submodule &&
git rm .gitmodules &&
git commit -m "new submodule without .gitmodules" &&
new_head=$(git rev-parse --short HEAD) &&
write_expected_super $new_head &&
rm expect.err.deep &&
(
cd downstream &&
rm .gitmodules &&
git config fetch.recurseSubmodules on-demand &&
# fake submodule configuration to avoid skipping submodule handling
git config -f .gitmodules submodule.fake.path fake &&
git config -f .gitmodules submodule.fake.url fakeurl &&
git add .gitmodules &&
git config --unset submodule.submodule.url &&
git fetch >../actual.out 2>../actual.err &&
# cleanup
git config --unset fetch.recurseSubmodules &&
git reset --hard
) &&
test_must_be_empty actual.out &&
verify_fetch_result actual.err &&
git checkout HEAD^ -- .gitmodules &&
git add .gitmodules &&
git commit -m "new submodule restored .gitmodules"
'
test_expect_success 'fetching submodules respects parallel settings' '
git config fetch.recurseSubmodules true &&
test_when_finished "rm -f downstream/trace.out" &&
(
cd downstream &&
GIT_TRACE=$(pwd)/trace.out git fetch &&
grep "1 tasks" trace.out &&
>trace.out &&
GIT_TRACE=$(pwd)/trace.out git fetch --jobs 7 &&
grep "7 tasks" trace.out &&
>trace.out &&
git config submodule.fetchJobs 8 &&
GIT_TRACE=$(pwd)/trace.out git fetch &&
grep "8 tasks" trace.out &&
>trace.out &&
GIT_TRACE=$(pwd)/trace.out git fetch --jobs 9 &&
grep "9 tasks" trace.out &&
>trace.out &&
GIT_TRACE=$(pwd)/trace.out git -c submodule.fetchJobs=0 fetch &&
grep "preparing to run up to [0-9]* tasks" trace.out &&
! grep "up to 0 tasks" trace.out &&
>trace.out
)
'
test_expect_success 'fetching submodule into a broken repository' '
# Prepare src and src/sub nested in it
git init src &&
(
cd src &&
git init sub &&
git -C sub commit --allow-empty -m "initial in sub" &&
git submodule add -- ./sub sub &&
git commit -m "initial in top"
) &&
# Clone the old-fashoned way
git clone src dst &&
git -C dst clone ../src/sub sub &&
# Make sure that old-fashoned layout is still supported
git -C dst status &&
# "diff" would find no change
git -C dst diff --exit-code &&
# Recursive-fetch works fine
git -C dst fetch --recurse-submodules &&
# Break the receiving submodule
rm -r dst/sub/.git/objects &&
# NOTE: without the fix the following tests will recurse forever!
# They should terminate with an error.
test_must_fail git -C dst status &&
test_must_fail git -C dst diff &&
test_must_fail git -C dst fetch --recurse-submodules
'
test_expect_success "fetch new commits when submodule got renamed" '
git clone . downstream_rename &&
(
cd downstream_rename &&
git submodule update --init --recursive &&
git checkout -b rename &&
git mv submodule submodule_renamed &&
(
cd submodule_renamed &&
git checkout -b rename_sub &&
echo a >a &&
git add a &&
git commit -ma &&
git push origin rename_sub &&
git rev-parse HEAD >../../expect
) &&
git add submodule_renamed &&
git commit -m "update renamed submodule" &&
git push origin rename
) &&
(
cd downstream &&
git fetch --recurse-submodules=on-demand &&
(
cd submodule &&
git rev-parse origin/rename_sub >../../actual
)
) &&
test_cmp expect actual
'
test_expect_success "fetch new submodule commits on-demand outside standard refspec" '
# add a second submodule and ensure it is around in downstream first
git clone submodule sub1 &&
git submodule add ./sub1 &&
git commit -m "adding a second submodule" &&
git -C downstream pull &&
git -C downstream submodule update --init --recursive &&
git checkout --detach &&
C=$(git -C submodule commit-tree -m "new change outside refs/heads" HEAD^{tree}) &&
git -C submodule update-ref refs/changes/1 $C &&
git update-index --cacheinfo 160000 $C submodule &&
test_tick &&
D=$(git -C sub1 commit-tree -m "new change outside refs/heads" HEAD^{tree}) &&
git -C sub1 update-ref refs/changes/2 $D &&
git update-index --cacheinfo 160000 $D sub1 &&
git commit -m "updated submodules outside of refs/heads" &&
E=$(git rev-parse HEAD) &&
git update-ref refs/changes/3 $E &&
(
cd downstream &&
git fetch --recurse-submodules origin refs/changes/3:refs/heads/my_branch &&
git -C submodule cat-file -t $C &&
git -C sub1 cat-file -t $D &&
git checkout --recurse-submodules FETCH_HEAD
)
'
test_expect_success 'fetch new submodule commit on-demand in FETCH_HEAD' '
# depends on the previous test for setup
C=$(git -C submodule commit-tree -m "another change outside refs/heads" HEAD^{tree}) &&
git -C submodule update-ref refs/changes/4 $C &&
git update-index --cacheinfo 160000 $C submodule &&
test_tick &&
D=$(git -C sub1 commit-tree -m "another change outside refs/heads" HEAD^{tree}) &&
git -C sub1 update-ref refs/changes/5 $D &&
git update-index --cacheinfo 160000 $D sub1 &&
git commit -m "updated submodules outside of refs/heads" &&
E=$(git rev-parse HEAD) &&
git update-ref refs/changes/6 $E &&
(
cd downstream &&
git fetch --recurse-submodules origin refs/changes/6 &&
git -C submodule cat-file -t $C &&
git -C sub1 cat-file -t $D &&
git checkout --recurse-submodules FETCH_HEAD
)
'
test_expect_success 'fetch new submodule commits on-demand without .gitmodules entry' '
# depends on the previous test for setup
git config -f .gitmodules --remove-section submodule.sub1 &&
git add .gitmodules &&
git commit -m "delete gitmodules file" &&
git checkout -B super &&
git -C downstream fetch &&
git -C downstream checkout origin/super &&
C=$(git -C submodule commit-tree -m "yet another change outside refs/heads" HEAD^{tree}) &&
git -C submodule update-ref refs/changes/7 $C &&
git update-index --cacheinfo 160000 $C submodule &&
test_tick &&
D=$(git -C sub1 commit-tree -m "yet another change outside refs/heads" HEAD^{tree}) &&
git -C sub1 update-ref refs/changes/8 $D &&
git update-index --cacheinfo 160000 $D sub1 &&
git commit -m "updated submodules outside of refs/heads" &&
E=$(git rev-parse HEAD) &&
git update-ref refs/changes/9 $E &&
(
cd downstream &&
git fetch --recurse-submodules origin refs/changes/9 &&
git -C submodule cat-file -t $C &&
git -C sub1 cat-file -t $D &&
git checkout --recurse-submodules FETCH_HEAD
)
'
test_expect_success 'fetch new submodule commit intermittently referenced by superproject' '
# depends on the previous test for setup
D=$(git -C sub1 commit-tree -m "change 10 outside refs/heads" HEAD^{tree}) &&
E=$(git -C sub1 commit-tree -m "change 11 outside refs/heads" HEAD^{tree}) &&
F=$(git -C sub1 commit-tree -m "change 12 outside refs/heads" HEAD^{tree}) &&
git -C sub1 update-ref refs/changes/10 $D &&
git update-index --cacheinfo 160000 $D sub1 &&
git commit -m "updated submodules outside of refs/heads" &&
git -C sub1 update-ref refs/changes/11 $E &&
git update-index --cacheinfo 160000 $E sub1 &&
git commit -m "updated submodules outside of refs/heads" &&
git -C sub1 update-ref refs/changes/12 $F &&
git update-index --cacheinfo 160000 $F sub1 &&
git commit -m "updated submodules outside of refs/heads" &&
G=$(git rev-parse HEAD) &&
git update-ref refs/changes/13 $G &&
(
cd downstream &&
git fetch --recurse-submodules origin refs/changes/13 &&
git -C sub1 cat-file -t $D &&
git -C sub1 cat-file -t $E &&
git -C sub1 cat-file -t $F
)
'
add_commit_push () {
dir="$1" &&
msg="$2" &&
shift 2 &&
git -C "$dir" add "$@" &&
git -C "$dir" commit -a -m "$msg" &&
git -C "$dir" push
}
compare_refs_in_dir () {
fail= &&
if test "x$1" = 'x!'
then
fail='!' &&
shift
fi &&
git -C "$1" rev-parse --verify "$2" >expect &&
git -C "$3" rev-parse --verify "$4" >actual &&
eval $fail test_cmp expect actual
}
test_expect_success 'setup nested submodule fetch test' '
# does not depend on any previous test setups
for repo in outer middle inner
do
git init --bare $repo &&
git clone $repo ${repo}_content &&
echo "$repo" >"${repo}_content/file" &&
add_commit_push ${repo}_content "initial" file ||
return 1
done &&
git clone outer A &&
git -C A submodule add "$pwd/middle" &&
git -C A/middle/ submodule add "$pwd/inner" &&
add_commit_push A/middle/ "adding inner sub" .gitmodules inner &&
add_commit_push A/ "adding middle sub" .gitmodules middle &&
git clone outer B &&
git -C B/ submodule update --init middle &&
compare_refs_in_dir A HEAD B HEAD &&
compare_refs_in_dir A/middle HEAD B/middle HEAD &&
test_path_is_file B/file &&
test_path_is_file B/middle/file &&
test_path_is_missing B/middle/inner/file &&
echo "change on inner repo of A" >"A/middle/inner/file" &&
add_commit_push A/middle/inner "change on inner" file &&
add_commit_push A/middle "change on inner" inner &&
add_commit_push A "change on inner" middle
'
test_expect_success 'fetching a superproject containing an uninitialized sub/sub project' '
# depends on previous test for setup
git -C B/ fetch &&
compare_refs_in_dir A origin/HEAD B origin/HEAD
'
fetch_with_recursion_abort () {
# In a regression the following git call will run into infinite recursion.
# To handle that, we connect the sed command to the git call by a pipe
# so that sed can kill the infinite recursion when detected.
# The recursion creates git output like:
# Fetching submodule sub
# Fetching submodule sub/sub <-- [1]
# Fetching submodule sub/sub/sub
# ...
# [1] sed will stop reading and cause git to eventually stop and die
git -C "$1" fetch --recurse-submodules 2>&1 |
sed "/Fetching submodule $2[^$]/q" >out &&
! grep "Fetching submodule $2[^$]" out
}
test_expect_success 'setup recursive fetch with uninit submodule' '
# does not depend on any previous test setups
test_create_repo super &&
test_commit -C super initial &&
test_create_repo sub &&
test_commit -C sub initial &&
git -C sub rev-parse HEAD >expect &&
git -C super submodule add ../sub &&
git -C super commit -m "add sub" &&
git clone super superclone &&
git -C superclone submodule status >out &&
sed -e "s/^-//" -e "s/ sub.*$//" out >actual &&
test_cmp expect actual
'
test_expect_success 'recursive fetch with uninit submodule' '
# depends on previous test for setup
fetch_with_recursion_abort superclone sub &&
git -C superclone submodule status >out &&
sed -e "s/^-//" -e "s/ sub$//" out >actual &&
test_cmp expect actual
'
test_expect_success 'recursive fetch after deinit a submodule' '
# depends on previous test for setup
git -C superclone submodule update --init sub &&
git -C superclone submodule deinit -f sub &&
fetch_with_recursion_abort superclone sub &&
git -C superclone submodule status >out &&
sed -e "s/^-//" -e "s/ sub$//" out >actual &&
test_cmp expect actual
'
test_expect_success 'setup repo with upstreams that share a submodule name' '
mkdir same-name-1 &&
(
cd same-name-1 &&
git init -b main &&
test_commit --no-tag a
) &&
git clone same-name-1 same-name-2 &&
# same-name-1 and same-name-2 both add a submodule with the
# name "submodule"
(
cd same-name-1 &&
mkdir submodule &&
git -C submodule init -b main &&
test_commit -C submodule --no-tag a1 &&
git submodule add "$pwd/same-name-1/submodule" &&
git add submodule &&
git commit -m "super-a1"
) &&
(
cd same-name-2 &&
mkdir submodule &&
git -C submodule init -b main &&
test_commit -C submodule --no-tag a2 &&
git submodule add "$pwd/same-name-2/submodule" &&
git add submodule &&
git commit -m "super-a2"
) &&
git clone same-name-1 -o same-name-1 same-name-downstream &&
(
cd same-name-downstream &&
git remote add same-name-2 ../same-name-2 &&
git fetch --all &&
# init downstream with same-name-1
git submodule update --init
)
'
test_expect_success 'fetch --recurse-submodules updates name-conflicted, populated submodule' '
test_when_finished "git -C same-name-downstream checkout main" &&
(
cd same-name-1 &&
test_commit -C submodule --no-tag b1 &&
git add submodule &&
git commit -m "super-b1"
) &&
(
cd same-name-2 &&
test_commit -C submodule --no-tag b2 &&
git add submodule &&
git commit -m "super-b2"
) &&
(
cd same-name-downstream &&
# even though the .gitmodules is correct, we cannot
# fetch from same-name-2
git checkout same-name-2/main &&
git fetch --recurse-submodules same-name-1 &&
test_must_fail git fetch --recurse-submodules same-name-2
) &&
super_head1=$(git -C same-name-1 rev-parse HEAD) &&
git -C same-name-downstream cat-file -e $super_head1 &&
super_head2=$(git -C same-name-2 rev-parse HEAD) &&
git -C same-name-downstream cat-file -e $super_head2 &&
sub_head1=$(git -C same-name-1/submodule rev-parse HEAD) &&
git -C same-name-downstream/submodule cat-file -e $sub_head1 &&
sub_head2=$(git -C same-name-2/submodule rev-parse HEAD) &&
test_must_fail git -C same-name-downstream/submodule cat-file -e $sub_head2
'
test_expect_success 'fetch --recurse-submodules updates name-conflicted, unpopulated submodule' '
(
cd same-name-1 &&
test_commit -C submodule --no-tag c1 &&
git add submodule &&
git commit -m "super-c1"
) &&
(
cd same-name-2 &&
test_commit -C submodule --no-tag c2 &&
git add submodule &&
git commit -m "super-c2"
) &&
(
cd same-name-downstream &&
git checkout main &&
git rm .gitmodules &&
git rm submodule &&
git commit -m "no submodules" &&
git fetch --recurse-submodules same-name-1
) &&
head1=$(git -C same-name-1/submodule rev-parse HEAD) &&
head2=$(git -C same-name-2/submodule rev-parse HEAD) &&
(
cd same-name-downstream/.git/modules/submodule &&
# The submodule has core.worktree pointing to the "git
# rm"-ed directory, overwrite the invalid value. See
# comment in get_fetch_task_from_changed() for more
# information.
git --work-tree=. cat-file -e $head1 &&
test_must_fail git --work-tree=. cat-file -e $head2
)
'
test_expect_success 'fetch --all with --recurse-submodules' '
test_when_finished "rm -fr src_clone" &&
git clone --recurse-submodules src src_clone &&
(
cd src_clone &&
git config submodule.recurse true &&
git config fetch.parallel 0 &&
git fetch --all 2>../fetch-log
) &&
grep "^Fetching submodule sub$" fetch-log >fetch-subs &&
test_line_count = 1 fetch-subs
'
test_expect_success 'fetch --all with --recurse-submodules with multiple' '
test_when_finished "rm -fr src_clone" &&
git clone --recurse-submodules src src_clone &&
(
cd src_clone &&
git remote add secondary ../src &&
git config submodule.recurse true &&
git config fetch.parallel 0 &&
git fetch --all 2>../fetch-log
) &&
grep "Fetching submodule sub" fetch-log >fetch-subs &&
test_line_count = 2 fetch-subs
'
test_expect_success "fetch --all with --no-recurse-submodules only fetches superproject" '
test_when_finished "rm -rf src_clone" &&
git clone --recurse-submodules src src_clone &&
(
cd src_clone &&
git remote add secondary ../src &&
git config submodule.recurse true &&
git fetch --all --no-recurse-submodules 2>../fetch-log
) &&
! grep "Fetching submodule" fetch-log
'
test_done