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Diffstat (limited to '')
| -rwxr-xr-x | t/t2030-unresolve-info.sh | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/t/t2030-unresolve-info.sh b/t/t2030-unresolve-info.sh new file mode 100755 index 0000000..be3fcdd --- /dev/null +++ b/t/t2030-unresolve-info.sh @@ -0,0 +1,305 @@ +#!/bin/sh + +test_description='undoing resolution' + +GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main +export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME + +. ./test-lib.sh + +check_resolve_undo () { + msg=$1 + shift + while case $# in + 0) break ;; + 1|2|3) die "Bug in check-resolve-undo test" ;; + esac + do + path=$1 + shift + for stage in 1 2 3 + do + sha1=$1 + shift + case "$sha1" in + '') continue ;; + esac + sha1=$(git rev-parse --verify "$sha1") + printf "100644 %s %s\t%s\n" $sha1 $stage $path + done + done >"$msg.expect" && + git ls-files --resolve-undo >"$msg.actual" && + test_cmp "$msg.expect" "$msg.actual" +} + +prime_resolve_undo () { + git reset --hard && + git checkout second^0 && + test_tick && + test_must_fail git merge third^0 && + check_resolve_undo empty && + + # how should the conflict be resolved? + case "$1" in + remove) + rm -f file/le && git rm fi/le + ;; + *) # modify + echo different >fi/le && git add fi/le + ;; + esac + check_resolve_undo recorded fi/le initial:fi/le second:fi/le third:fi/le +} + +test_expect_success setup ' + mkdir fi && + printf "a\0a" >binary && + git add binary && + test_commit initial fi/le first && + git branch side && + git branch another && + printf "a\0b" >binary && + git add binary && + test_commit second fi/le second && + git checkout side && + test_commit third fi/le third && + git branch add-add && + git checkout another && + test_commit fourth fi/le fourth && + git checkout add-add && + test_commit fifth add-differently && + git checkout main +' + +test_expect_success 'add records switch clears' ' + prime_resolve_undo && + test_tick && + git commit -m merged && + echo committing keeps && + check_resolve_undo kept fi/le initial:fi/le second:fi/le third:fi/le && + git checkout second^0 && + echo switching clears && + check_resolve_undo cleared +' + +test_expect_success 'rm records reset clears' ' + prime_resolve_undo && + test_tick && + git commit -m merged && + echo committing keeps && + check_resolve_undo kept fi/le initial:fi/le second:fi/le third:fi/le && + + echo merge clears upfront && + test_must_fail git merge fourth^0 && + check_resolve_undo nuked && + + git rm -f fi/le && + echo resolving records && + check_resolve_undo recorded fi/le initial:fi/le HEAD:fi/le fourth:fi/le && + + git reset --hard && + echo resetting discards && + check_resolve_undo discarded +' + +test_expect_success 'plumbing clears' ' + prime_resolve_undo && + test_tick && + git commit -m merged && + echo committing keeps && + check_resolve_undo kept fi/le initial:fi/le second:fi/le third:fi/le && + + echo plumbing clear && + git update-index --clear-resolve-undo && + check_resolve_undo cleared +' + +test_expect_success 'add records checkout -m undoes' ' + prime_resolve_undo && + git diff HEAD && + git checkout --conflict=merge fi/le && + echo checkout used the record and removed it && + check_resolve_undo removed && + echo the index and the work tree is unmerged again && + git diff >actual && + grep "^++<<<<<<<" actual +' + +test_expect_success 'unmerge with plumbing' ' + prime_resolve_undo && + git update-index --unresolve fi/le && + git ls-files --resolve-undo fi/le >actual && + test_must_be_empty actual && + git ls-files -u >actual && + test_line_count = 3 actual +' + +test_expect_success 'unmerge can be done even after committing' ' + prime_resolve_undo && + git commit -m "record to nuke MERGE_HEAD" && + git update-index --unresolve fi/le && + git ls-files --resolve-undo fi/le >actual && + test_must_be_empty actual && + git ls-files -u >actual && + test_line_count = 3 actual +' + +test_expect_success 'unmerge removal' ' + prime_resolve_undo remove && + git update-index --unresolve fi/le && + git ls-files --resolve-undo fi/le >actual && + test_must_be_empty actual && + git ls-files -u >actual && + test_line_count = 3 actual +' + +test_expect_success 'unmerge removal after committing' ' + prime_resolve_undo remove && + git commit -m "record to nuke MERGE_HEAD" && + git update-index --unresolve fi/le && + git ls-files --resolve-undo fi/le >actual && + test_must_be_empty actual && + git ls-files -u >actual && + test_line_count = 3 actual +' + +test_expect_success 'rerere and rerere forget' ' + mkdir .git/rr-cache && + prime_resolve_undo && + echo record the resolution && + git rerere && + rerere_id=$(cd .git/rr-cache && echo */postimage) && + rerere_id=${rerere_id%/postimage} && + test -f .git/rr-cache/$rerere_id/postimage && + git checkout -m fi/le && + echo resurrect the conflict && + grep "^=======" fi/le && + echo reresolve the conflict && + git rerere && + test "z$(cat fi/le)" = zdifferent && + echo register the resolution again && + git add fi/le && + check_resolve_undo kept fi/le initial:fi/le second:fi/le third:fi/le && + test -z "$(git ls-files -u)" && + git rerere forget fi/le && + ! test -f .git/rr-cache/$rerere_id/postimage && + tr "\0" "\n" <.git/MERGE_RR >actual && + echo "$rerere_id fi/le" >expect && + test_cmp expect actual +' + +test_expect_success 'rerere and rerere forget (subdirectory)' ' + rm -fr .git/rr-cache && + mkdir .git/rr-cache && + prime_resolve_undo && + echo record the resolution && + (cd fi && git rerere) && + rerere_id=$(cd .git/rr-cache && echo */postimage) && + rerere_id=${rerere_id%/postimage} && + test -f .git/rr-cache/$rerere_id/postimage && + (cd fi && git checkout -m le) && + echo resurrect the conflict && + grep "^=======" fi/le && + echo reresolve the conflict && + (cd fi && git rerere) && + test "z$(cat fi/le)" = zdifferent && + echo register the resolution again && + (cd fi && git add le) && + check_resolve_undo kept fi/le initial:fi/le second:fi/le third:fi/le && + test -z "$(git ls-files -u)" && + (cd fi && git rerere forget le) && + ! test -f .git/rr-cache/$rerere_id/postimage && + tr "\0" "\n" <.git/MERGE_RR >actual && + echo "$rerere_id fi/le" >expect && + test_cmp expect actual +' + +test_expect_success 'rerere forget (binary)' ' + git checkout -f side && + test_commit --printf binary binary "a\0c" && + test_must_fail git merge second && + git rerere forget binary +' + +test_expect_success 'rerere forget (add-add conflict)' ' + git checkout -f main && + echo main >add-differently && + git add add-differently && + git commit -m "add differently" && + test_must_fail git merge fifth && + git rerere forget add-differently 2>actual && + test_grep "no remembered" actual +' + +test_expect_success 'resolve-undo keeps blobs from gc' ' + git checkout -f main && + + # First make sure we do not have any cruft left in the object store + git repack -a -d && + git prune --expire=now && + git prune-packed && + git gc --prune=now && + git fsck --unreachable >cruft && + test_must_be_empty cruft && + + # Now add three otherwise unreferenced blob objects to the index + git reset --hard && + B1=$(echo "resolve undo test data 1" | git hash-object -w --stdin) && + B2=$(echo "resolve undo test data 2" | git hash-object -w --stdin) && + B3=$(echo "resolve undo test data 3" | git hash-object -w --stdin) && + git update-index --add --index-info <<-EOF && + 100644 $B1 1 frotz + 100644 $B2 2 frotz + 100644 $B3 3 frotz + EOF + + # These three blob objects are reachable (only) from the index + git fsck --unreachable >cruft && + test_must_be_empty cruft && + # and they should be protected from GC + git gc --prune=now && + git cat-file -e $B1 && + git cat-file -e $B2 && + git cat-file -e $B3 && + + # Now resolve the conflicted path + B0=$(echo "resolve undo test data 0" | git hash-object -w --stdin) && + git update-index --add --cacheinfo 100644,$B0,frotz && + + # These three blob objects are now reachable only from the resolve-undo + git fsck --unreachable >cruft && + test_must_be_empty cruft && + + # and they should survive GC + git gc --prune=now && + git cat-file -e $B0 && + git cat-file -e $B1 && + git cat-file -e $B2 && + git cat-file -e $B3 && + + # Now we switch away, which nukes resolve-undo, and + # blobs B0..B3 would become dangling. fsck should + # notice that they are now unreachable. + git checkout -f side && + git fsck --unreachable >cruft && + sort cruft >actual && + sort <<-EOF >expect && + unreachable blob $B0 + unreachable blob $B1 + unreachable blob $B2 + unreachable blob $B3 + EOF + test_cmp expect actual && + + # And they should go away when gc runs. + git gc --prune=now && + git fsck --unreachable >cruft && + test_must_be_empty cruft && + + test_must_fail git cat-file -e $B0 && + test_must_fail git cat-file -e $B1 && + test_must_fail git cat-file -e $B2 && + test_must_fail git cat-file -e $B3 +' + +test_done |