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Derrick Stolee e5ca291076 t1092: document bad sparse-checkout behavior 
There are several situations where a repository with sparse-checkout
enabled will act differently than a normal repository, and in ways that
are not intentional. The test t1092-sparse-checkout-compatibility.sh
documents some of these deviations, but a casual reader might think
these are intentional behavior changes.

Add comments on these tests that make it clear that these behaviors
should be updated. Using 'NEEDSWORK' helps contributors find that these
are potential areas for improvement.

Helped-by: Elijah Newren <newren@gmail.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-07-14 13:42:49 -07:00

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#!/bin/sh
test_description='compare full workdir to sparse workdir'
GIT_TEST_SPLIT_INDEX=0
GIT_TEST_SPARSE_INDEX=
. ./test-lib.sh
test_expect_success 'setup' '
git init initial-repo &&
(
GIT_TEST_SPARSE_INDEX=0 &&
cd initial-repo &&
echo a >a &&
echo "after deep" >e &&
echo "after folder1" >g &&
echo "after x" >z &&
mkdir folder1 folder2 deep x &&
mkdir deep/deeper1 deep/deeper2 deep/before deep/later &&
mkdir deep/deeper1/deepest &&
echo "after deeper1" >deep/e &&
echo "after deepest" >deep/deeper1/e &&
cp a folder1 &&
cp a folder2 &&
cp a x &&
cp a deep &&
cp a deep/before &&
cp a deep/deeper1 &&
cp a deep/deeper2 &&
cp a deep/later &&
cp a deep/deeper1/deepest &&
cp -r deep/deeper1/deepest deep/deeper2 &&
mkdir deep/deeper1/0 &&
mkdir deep/deeper1/0/0 &&
touch deep/deeper1/0/1 &&
touch deep/deeper1/0/0/0 &&
>folder1- &&
>folder1.x &&
>folder10 &&
cp -r deep/deeper1/0 folder1 &&
cp -r deep/deeper1/0 folder2 &&
echo >>folder1/0/0/0 &&
echo >>folder2/0/1 &&
git add . &&
git commit -m "initial commit" &&
git checkout -b base &&
for dir in folder1 folder2 deep
do
git checkout -b update-$dir &&
echo "updated $dir" >$dir/a &&
git commit -a -m "update $dir" || return 1
done &&
git checkout -b rename-base base &&
cat >folder1/larger-content <<-\EOF &&
matching
lines
help
inexact
renames
EOF
cp folder1/larger-content folder2/ &&
cp folder1/larger-content deep/deeper1/ &&
git add . &&
git commit -m "add interesting rename content" &&
git checkout -b rename-out-to-out rename-base &&
mv folder1/a folder2/b &&
mv folder1/larger-content folder2/edited-content &&
echo >>folder2/edited-content &&
echo >>folder2/0/1 &&
echo stuff >>deep/deeper1/a &&
git add . &&
git commit -m "rename folder1/... to folder2/..." &&
git checkout -b rename-out-to-in rename-base &&
mv folder1/a deep/deeper1/b &&
echo more stuff >>deep/deeper1/a &&
rm folder2/0/1 &&
mkdir folder2/0/1 &&
echo >>folder2/0/1/1 &&
mv folder1/larger-content deep/deeper1/edited-content &&
echo >>deep/deeper1/edited-content &&
git add . &&
git commit -m "rename folder1/... to deep/deeper1/..." &&
git checkout -b rename-in-to-out rename-base &&
mv deep/deeper1/a folder1/b &&
echo >>folder2/0/1 &&
rm -rf folder1/0/0 &&
echo >>folder1/0/0 &&
mv deep/deeper1/larger-content folder1/edited-content &&
echo >>folder1/edited-content &&
git add . &&
git commit -m "rename deep/deeper1/... to folder1/..." &&
git checkout -b deepest base &&
echo "updated deepest" >deep/deeper1/deepest/a &&
git commit -a -m "update deepest" &&
git checkout -f base &&
git reset --hard
)
'
init_repos () {
rm -rf full-checkout sparse-checkout sparse-index &&
# create repos in initial state
cp -r initial-repo full-checkout &&
git -C full-checkout reset --hard &&
cp -r initial-repo sparse-checkout &&
git -C sparse-checkout reset --hard &&
cp -r initial-repo sparse-index &&
git -C sparse-index reset --hard &&
# initialize sparse-checkout definitions
git -C sparse-checkout sparse-checkout init --cone &&
git -C sparse-checkout sparse-checkout set deep &&
git -C sparse-index sparse-checkout init --cone --sparse-index &&
test_cmp_config -C sparse-index true index.sparse &&
git -C sparse-index sparse-checkout set deep
}
run_on_sparse () {
(
cd sparse-checkout &&
GIT_PROGRESS_DELAY=100000 "$@" >../sparse-checkout-out 2>../sparse-checkout-err
) &&
(
cd sparse-index &&
GIT_PROGRESS_DELAY=100000 "$@" >../sparse-index-out 2>../sparse-index-err
)
}
run_on_all () {
(
cd full-checkout &&
GIT_PROGRESS_DELAY=100000 "$@" >../full-checkout-out 2>../full-checkout-err
) &&
run_on_sparse "$@"
}
test_all_match () {
run_on_all "$@" &&
test_cmp full-checkout-out sparse-checkout-out &&
test_cmp full-checkout-out sparse-index-out &&
test_cmp full-checkout-err sparse-checkout-err &&
test_cmp full-checkout-err sparse-index-err
}
test_sparse_match () {
run_on_sparse "$@" &&
test_cmp sparse-checkout-out sparse-index-out &&
test_cmp sparse-checkout-err sparse-index-err
}
test_expect_success 'sparse-index contents' '
init_repos &&
test-tool -C sparse-index read-cache --table >cache &&
for dir in folder1 folder2 x
do
TREE=$(git -C sparse-index rev-parse HEAD:$dir) &&
grep "040000 tree $TREE $dir/" cache \
|| return 1
done &&
git -C sparse-index sparse-checkout set folder1 &&
test-tool -C sparse-index read-cache --table >cache &&
for dir in deep folder2 x
do
TREE=$(git -C sparse-index rev-parse HEAD:$dir) &&
grep "040000 tree $TREE $dir/" cache \
|| return 1
done &&
git -C sparse-index sparse-checkout set deep/deeper1 &&
test-tool -C sparse-index read-cache --table >cache &&
for dir in deep/deeper2 folder1 folder2 x
do
TREE=$(git -C sparse-index rev-parse HEAD:$dir) &&
grep "040000 tree $TREE $dir/" cache \
|| return 1
done &&
# Disabling the sparse-index removes tree entries with full ones
git -C sparse-index sparse-checkout init --no-sparse-index &&
test-tool -C sparse-index read-cache --table >cache &&
! grep "040000 tree" cache &&
test_sparse_match test-tool read-cache --table
'
test_expect_success 'expanded in-memory index matches full index' '
init_repos &&
test_sparse_match test-tool read-cache --expand --table
'
test_expect_success 'status with options' '
init_repos &&
test_sparse_match ls &&
test_all_match git status --porcelain=v2 &&
test_all_match git status --porcelain=v2 -z -u &&
test_all_match git status --porcelain=v2 -uno &&
run_on_all touch README.md &&
test_all_match git status --porcelain=v2 &&
test_all_match git status --porcelain=v2 -z -u &&
test_all_match git status --porcelain=v2 -uno &&
test_all_match git add README.md &&
test_all_match git status --porcelain=v2 &&
test_all_match git status --porcelain=v2 -z -u &&
test_all_match git status --porcelain=v2 -uno
'
test_expect_success 'status reports sparse-checkout' '
init_repos &&
git -C sparse-checkout status >full &&
git -C sparse-index status >sparse &&
test_i18ngrep "You are in a sparse checkout with " full &&
test_i18ngrep "You are in a sparse checkout." sparse
'
test_expect_success 'add, commit, checkout' '
init_repos &&
write_script edit-contents <<-\EOF &&
echo text >>$1
EOF
run_on_all ../edit-contents README.md &&
test_all_match git add README.md &&
test_all_match git status --porcelain=v2 &&
test_all_match git commit -m "Add README.md" &&
test_all_match git checkout HEAD~1 &&
test_all_match git checkout - &&
run_on_all ../edit-contents README.md &&
test_all_match git add -A &&
test_all_match git status --porcelain=v2 &&
test_all_match git commit -m "Extend README.md" &&
test_all_match git checkout HEAD~1 &&
test_all_match git checkout - &&
run_on_all ../edit-contents deep/newfile &&
test_all_match git status --porcelain=v2 -uno &&
test_all_match git status --porcelain=v2 &&
test_all_match git add . &&
test_all_match git status --porcelain=v2 &&
test_all_match git commit -m "add deep/newfile" &&
test_all_match git checkout HEAD~1 &&
test_all_match git checkout -
'
test_expect_success 'status/add: outside sparse cone' '
init_repos &&
# adding a "missing" file outside the cone should fail
test_sparse_match test_must_fail git add folder1/a &&
# folder1 is at HEAD, but outside the sparse cone
run_on_sparse mkdir folder1 &&
cp initial-repo/folder1/a sparse-checkout/folder1/a &&
cp initial-repo/folder1/a sparse-index/folder1/a &&
test_sparse_match git status &&
write_script edit-contents <<-\EOF &&
echo text >>$1
EOF
run_on_sparse ../edit-contents folder1/a &&
run_on_all ../edit-contents folder1/new &&
test_sparse_match git status --porcelain=v2 &&
# This "git add folder1/a" fails with a warning
# in the sparse repos, differing from the full
# repo. This is intentional.
test_sparse_match test_must_fail git add folder1/a &&
test_sparse_match test_must_fail git add --refresh folder1/a &&
test_all_match git status --porcelain=v2 &&
test_all_match git add . &&
test_all_match git status --porcelain=v2 &&
test_all_match git commit -m folder1/new &&
run_on_all ../edit-contents folder1/newer &&
test_all_match git add folder1/ &&
test_all_match git status --porcelain=v2 &&
test_all_match git commit -m folder1/newer
'
test_expect_success 'checkout and reset --hard' '
init_repos &&
test_all_match git checkout update-folder1 &&
test_all_match git status --porcelain=v2 &&
test_all_match git checkout update-deep &&
test_all_match git status --porcelain=v2 &&
test_all_match git checkout -b reset-test &&
test_all_match git reset --hard deepest &&
test_all_match git reset --hard update-folder1 &&
test_all_match git reset --hard update-folder2
'
test_expect_success 'diff --staged' '
init_repos &&
write_script edit-contents <<-\EOF &&
echo text >>README.md
EOF
run_on_all ../edit-contents &&
test_all_match git diff &&
test_all_match git diff --staged &&
test_all_match git add README.md &&
test_all_match git diff &&
test_all_match git diff --staged
'
test_expect_success 'diff with renames and conflicts' '
init_repos &&
for branch in rename-out-to-out rename-out-to-in rename-in-to-out
do
test_all_match git checkout rename-base &&
test_all_match git checkout $branch -- . &&
test_all_match git status --porcelain=v2 &&
test_all_match git diff --staged --no-renames &&
test_all_match git diff --staged --find-renames || return 1
done
'
test_expect_success 'diff with directory/file conflicts' '
init_repos &&
for branch in rename-out-to-out rename-out-to-in rename-in-to-out
do
git -C full-checkout reset --hard &&
test_sparse_match git reset --hard &&
test_all_match git checkout $branch &&
test_all_match git checkout rename-base -- . &&
test_all_match git status --porcelain=v2 &&
test_all_match git diff --staged --no-renames &&
test_all_match git diff --staged --find-renames || return 1
done
'
test_expect_success 'log with pathspec outside sparse definition' '
init_repos &&
test_all_match git log -- a &&
test_all_match git log -- folder1/a &&
test_all_match git log -- folder2/a &&
test_all_match git log -- deep/a &&
test_all_match git log -- deep/deeper1/a &&
test_all_match git log -- deep/deeper1/deepest/a &&
test_all_match git checkout update-folder1 &&
test_all_match git log -- folder1/a
'
test_expect_success 'blame with pathspec inside sparse definition' '
init_repos &&
test_all_match git blame a &&
test_all_match git blame deep/a &&
test_all_match git blame deep/deeper1/a &&
test_all_match git blame deep/deeper1/deepest/a
'
# TODO: blame currently does not support blaming files outside of the
# sparse definition. It complains that the file doesn't exist locally.
test_expect_failure 'blame with pathspec outside sparse definition' '
init_repos &&
test_all_match git blame folder1/a &&
test_all_match git blame folder2/a &&
test_all_match git blame deep/deeper2/a &&
test_all_match git blame deep/deeper2/deepest/a
'
# NEEDSWORK: a sparse-checkout behaves differently from a full checkout
# in this scenario, but it shouldn't.
test_expect_failure 'checkout and reset (mixed)' '
init_repos &&
test_all_match git checkout -b reset-test update-deep &&
test_all_match git reset deepest &&
test_all_match git reset update-folder1 &&
test_all_match git reset update-folder2
'
# NEEDSWORK: a sparse-checkout behaves differently from a full checkout
# in this scenario, but it shouldn't.
test_expect_success 'checkout and reset (mixed) [sparse]' '
init_repos &&
test_sparse_match git checkout -b reset-test update-deep &&
test_sparse_match git reset deepest &&
test_sparse_match git reset update-folder1 &&
test_sparse_match git reset update-folder2
'
test_expect_success 'merge' '
init_repos &&
test_all_match git checkout -b merge update-deep &&
test_all_match git merge -m "folder1" update-folder1 &&
test_all_match git rev-parse HEAD^{tree} &&
test_all_match git merge -m "folder2" update-folder2 &&
test_all_match git rev-parse HEAD^{tree}
'
test_expect_success 'merge with outside renames' '
init_repos &&
for type in out-to-out out-to-in in-to-out
do
test_all_match git reset --hard &&
test_all_match git checkout -f -b merge-$type update-deep &&
test_all_match git merge -m "$type" rename-$type &&
test_all_match git rev-parse HEAD^{tree} || return 1
done
'
# Sparse-index fails to convert the index in the
# final 'git cherry-pick' command.
test_expect_success 'cherry-pick with conflicts' '
init_repos &&
write_script edit-conflict <<-\EOF &&
echo $1 >conflict
EOF
test_all_match git checkout -b to-cherry-pick &&
run_on_all ../edit-conflict ABC &&
test_all_match git add conflict &&
test_all_match git commit -m "conflict to pick" &&
test_all_match git checkout -B base HEAD~1 &&
run_on_all ../edit-conflict DEF &&
test_all_match git add conflict &&
test_all_match git commit -m "conflict in base" &&
test_all_match test_must_fail git cherry-pick to-cherry-pick
'
test_expect_success 'clean' '
init_repos &&
echo bogus >>.gitignore &&
run_on_all cp ../.gitignore . &&
test_all_match git add .gitignore &&
test_all_match git commit -m "ignore bogus files" &&
run_on_sparse mkdir folder1 &&
run_on_all touch folder1/bogus &&
test_all_match git status --porcelain=v2 &&
test_all_match git clean -f &&
test_all_match git status --porcelain=v2 &&
test_sparse_match ls &&
test_sparse_match ls folder1 &&
test_all_match git clean -xf &&
test_all_match git status --porcelain=v2 &&
test_sparse_match ls &&
test_sparse_match ls folder1 &&
test_all_match git clean -xdf &&
test_all_match git status --porcelain=v2 &&
test_sparse_match ls &&
test_sparse_match ls folder1 &&
test_sparse_match test_path_is_dir folder1
'
test_expect_success 'submodule handling' '
init_repos &&
test_all_match mkdir modules &&
test_all_match touch modules/a &&
test_all_match git add modules &&
test_all_match git commit -m "add modules directory" &&
run_on_all git submodule add "$(pwd)/initial-repo" modules/sub &&
test_all_match git commit -m "add submodule" &&
# having a submodule prevents "modules" from collapse
test-tool -C sparse-index read-cache --table >cache &&
grep "100644 blob .* modules/a" cache &&
grep "160000 commit $(git -C initial-repo rev-parse HEAD) modules/sub" cache
'
test_expect_success 'sparse-index is expanded and converted back' '
init_repos &&
GIT_TRACE2_EVENT="$(pwd)/trace2.txt" GIT_TRACE2_EVENT_NESTING=10 \
git -C sparse-index -c core.fsmonitor="" reset --hard &&
test_region index convert_to_sparse trace2.txt &&
test_region index ensure_full_index trace2.txt
'
test_expect_success 'sparse-index is not expanded' '
init_repos &&
rm -f trace2.txt &&
echo >>sparse-index/untracked.txt &&
GIT_TRACE2_EVENT="$(pwd)/trace2.txt" GIT_TRACE2_EVENT_NESTING=10 \
git -C sparse-index status &&
test_region ! index ensure_full_index trace2.txt
'
# NEEDSWORK: a sparse-checkout behaves differently from a full checkout
# in this scenario, but it shouldn't.
test_expect_success 'reset mixed and checkout orphan' '
init_repos &&
test_all_match git checkout rename-out-to-in &&
# Sparse checkouts do not agree with full checkouts about
# how to report a directory/file conflict during a reset.
# This command would fail with test_all_match because the
# full checkout reports "T folder1/0/1" while a sparse
# checkout reports "D folder1/0/1". This matches because
# the sparse checkouts skip "adding" the other side of
# the conflict.
test_sparse_match git reset --mixed HEAD~1 &&
test_sparse_match test-tool read-cache --table --expand &&
test_sparse_match git status --porcelain=v2 &&
# At this point, sparse-checkouts behave differently
# from the full-checkout.
test_sparse_match git checkout --orphan new-branch &&
test_sparse_match test-tool read-cache --table --expand &&
test_sparse_match git status --porcelain=v2
'
test_expect_success 'add everything with deep new file' '
init_repos &&
run_on_sparse git sparse-checkout set deep/deeper1/deepest &&
run_on_all touch deep/deeper1/x &&
test_all_match git add . &&
test_all_match git status --porcelain=v2
'
test_done
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