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git/t/t5572-pull-submodule.sh
Jonathan Tan 4d36f88be7 submodule: do not pass null OID to setup_revisions
If "git pull --recurse-submodules --rebase" is invoked when the current
branch and its corresponding remote-tracking branch have no merge base,
a "bad object" fatal error occurs. This issue was introduced with commit
a6d7eb2c7a ("pull: optionally rebase submodules (remote submodule
changes only)", 2017-06-23), which also introduced this feature.

This is because cmd_pull() in builtin/pull.c thus invokes
submodule_touches_in_range() with a null OID as the first parameter.
Ensure that this case works, and document what happens in this case.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-05-25 15:25:42 +09:00

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#!/bin/sh
test_description='pull can handle submodules'
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-submodule-update.sh
reset_branch_to_HEAD () {
git branch -D "$1" &&
git checkout -b "$1" HEAD &&
git branch --set-upstream-to="origin/$1" "$1"
}
git_pull () {
reset_branch_to_HEAD "$1" &&
git pull
}
# pulls without conflicts
test_submodule_switch "git_pull"
git_pull_ff () {
reset_branch_to_HEAD "$1" &&
git pull --ff
}
test_submodule_switch "git_pull_ff"
git_pull_ff_only () {
reset_branch_to_HEAD "$1" &&
git pull --ff-only
}
test_submodule_switch "git_pull_ff_only"
git_pull_noff () {
reset_branch_to_HEAD "$1" &&
git pull --no-ff
}
KNOWN_FAILURE_NOFF_MERGE_DOESNT_CREATE_EMPTY_SUBMODULE_DIR=1
KNOWN_FAILURE_NOFF_MERGE_ATTEMPTS_TO_MERGE_REMOVED_SUBMODULE_FILES=1
test_submodule_switch "git_pull_noff"
test_expect_success 'pull --recurse-submodule setup' '
test_create_repo child &&
test_commit -C child bar &&
test_create_repo parent &&
test_commit -C child foo &&
git -C parent submodule add ../child sub &&
git -C parent commit -m "add submodule" &&
git clone --recurse-submodules parent super
'
test_expect_success 'recursive pull updates working tree' '
test_commit -C child merge_strategy &&
git -C parent submodule update --remote &&
git -C parent add sub &&
git -C parent commit -m "update submodule" &&
git -C super pull --no-rebase --recurse-submodules &&
test_path_is_file super/sub/merge_strategy.t
'
test_expect_success "submodule.recurse option triggers recursive pull" '
test_commit -C child merge_strategy_2 &&
git -C parent submodule update --remote &&
git -C parent add sub &&
git -C parent commit -m "update submodule" &&
git -C super -c submodule.recurse pull --no-rebase &&
test_path_is_file super/sub/merge_strategy_2.t
'
test_expect_success " --[no-]recurse-submodule and submodule.recurse" '
test_commit -C child merge_strategy_3 &&
git -C parent submodule update --remote &&
git -C parent add sub &&
git -C parent commit -m "update submodule" &&
git -C super -c submodule.recurse pull --no-recurse-submodules --no-rebase &&
test_path_is_missing super/sub/merge_strategy_3.t &&
git -C super -c submodule.recurse=false pull --recurse-submodules --no-rebase &&
test_path_is_file super/sub/merge_strategy_3.t &&
test_commit -C child merge_strategy_4 &&
git -C parent submodule update --remote &&
git -C parent add sub &&
git -C parent commit -m "update submodule" &&
git -C super -c submodule.recurse=false pull --no-recurse-submodules --no-rebase &&
test_path_is_missing super/sub/merge_strategy_4.t &&
git -C super -c submodule.recurse=true pull --recurse-submodules --no-rebase &&
test_path_is_file super/sub/merge_strategy_4.t
'
test_expect_success 'recursive rebasing pull' '
# change upstream
test_commit -C child rebase_strategy &&
git -C parent submodule update --remote &&
git -C parent add sub &&
git -C parent commit -m "update submodule" &&
# also have local commits
test_commit -C super/sub local_stuff &&
git -C super pull --rebase --recurse-submodules &&
test_path_is_file super/sub/rebase_strategy.t &&
test_path_is_file super/sub/local_stuff.t
'
test_expect_success 'pull rebase recursing fails with conflicts' '
# local changes in submodule recorded in superproject:
test_commit -C super/sub local_stuff_2 &&
git -C super add sub &&
git -C super commit -m "local update submodule" &&
# and in the remote as well:
test_commit -C child important_upstream_work &&
git -C parent submodule update --remote &&
git -C parent add sub &&
git -C parent commit -m "remote update submodule" &&
# Unfortunately we fail here, despite no conflict in the
# submodule itself, but the merge strategy in submodules
# does not support rebase:
test_must_fail git -C super pull --rebase --recurse-submodules 2>err &&
test_i18ngrep "locally recorded submodule modifications" err
'
test_expect_success 'branch has no merge base with remote-tracking counterpart' '
rm -rf parent child &&
test_create_repo a-submodule &&
test_commit -C a-submodule foo &&
test_create_repo parent &&
git -C parent submodule add "$(pwd)/a-submodule" &&
git -C parent commit -m foo &&
git clone parent child &&
# Reset master so that it has no merge base with
# refs/remotes/origin/master.
OTHER=$(git -C child commit-tree -m bar \
$(git -C child rev-parse HEAD^{tree})) &&
git -C child reset --hard "$OTHER" &&
git -C child pull --recurse-submodules --rebase
'
test_done