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-rwxr-xr-xt/t0410-partial-clone.sh524
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diff --git a/t/t0410-partial-clone.sh b/t/t0410-partial-clone.sh
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+#!/bin/sh
+
+test_description='partial clone'
+
+. ./test-lib.sh
+
+delete_object () {
+ rm $1/.git/objects/$(echo $2 | sed -e 's|^..|&/|')
+}
+
+pack_as_from_promisor () {
+ HASH=$(git -C repo pack-objects .git/objects/pack/pack) &&
+ >repo/.git/objects/pack/pack-$HASH.promisor &&
+ echo $HASH
+}
+
+promise_and_delete () {
+ HASH=$(git -C repo rev-parse "$1") &&
+ git -C repo tag -a -m message my_annotated_tag "$HASH" &&
+ git -C repo rev-parse my_annotated_tag | pack_as_from_promisor &&
+ # tag -d prints a message to stdout, so redirect it
+ git -C repo tag -d my_annotated_tag >/dev/null &&
+ delete_object repo "$HASH"
+}
+
+test_expect_success 'extensions.partialclone without filter' '
+ test_create_repo server &&
+ git clone --filter="blob:none" "file://$(pwd)/server" client &&
+ git -C client config --unset core.partialclonefilter &&
+ git -C client fetch origin
+'
+
+test_expect_success 'missing reflog object, but promised by a commit, passes fsck' '
+ rm -rf repo &&
+ test_create_repo repo &&
+ test_commit -C repo my_commit &&
+
+ A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
+ C=$(git -C repo commit-tree -m c -p $A HEAD^{tree}) &&
+
+ # Reference $A only from reflog, and delete it
+ git -C repo branch my_branch "$A" &&
+ git -C repo branch -f my_branch my_commit &&
+ delete_object repo "$A" &&
+
+ # State that we got $C, which refers to $A, from promisor
+ printf "$C\n" | pack_as_from_promisor &&
+
+ # Normally, it fails
+ test_must_fail git -C repo fsck &&
+
+ # But with the extension, it succeeds
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "arbitrary string" &&
+ git -C repo fsck
+'
+
+test_expect_success 'missing reflog object, but promised by a tag, passes fsck' '
+ rm -rf repo &&
+ test_create_repo repo &&
+ test_commit -C repo my_commit &&
+
+ A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
+ git -C repo tag -a -m d my_tag_name $A &&
+ T=$(git -C repo rev-parse my_tag_name) &&
+ git -C repo tag -d my_tag_name &&
+
+ # Reference $A only from reflog, and delete it
+ git -C repo branch my_branch "$A" &&
+ git -C repo branch -f my_branch my_commit &&
+ delete_object repo "$A" &&
+
+ # State that we got $T, which refers to $A, from promisor
+ printf "$T\n" | pack_as_from_promisor &&
+
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "arbitrary string" &&
+ git -C repo fsck
+'
+
+test_expect_success 'missing reflog object alone fails fsck, even with extension set' '
+ rm -rf repo &&
+ test_create_repo repo &&
+ test_commit -C repo my_commit &&
+
+ A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
+ B=$(git -C repo commit-tree -m b HEAD^{tree}) &&
+
+ # Reference $A only from reflog, and delete it
+ git -C repo branch my_branch "$A" &&
+ git -C repo branch -f my_branch my_commit &&
+ delete_object repo "$A" &&
+
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "arbitrary string" &&
+ test_must_fail git -C repo fsck
+'
+
+test_expect_success 'missing ref object, but promised, passes fsck' '
+ rm -rf repo &&
+ test_create_repo repo &&
+ test_commit -C repo my_commit &&
+
+ A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
+
+ # Reference $A only from ref
+ git -C repo branch my_branch "$A" &&
+ promise_and_delete "$A" &&
+
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "arbitrary string" &&
+ git -C repo fsck
+'
+
+test_expect_success 'missing object, but promised, passes fsck' '
+ rm -rf repo &&
+ test_create_repo repo &&
+ test_commit -C repo 1 &&
+ test_commit -C repo 2 &&
+ test_commit -C repo 3 &&
+ git -C repo tag -a annotated_tag -m "annotated tag" &&
+
+ C=$(git -C repo rev-parse 1) &&
+ T=$(git -C repo rev-parse 2^{tree}) &&
+ B=$(git hash-object repo/3.t) &&
+ AT=$(git -C repo rev-parse annotated_tag) &&
+
+ promise_and_delete "$C" &&
+ promise_and_delete "$T" &&
+ promise_and_delete "$B" &&
+ promise_and_delete "$AT" &&
+
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "arbitrary string" &&
+ git -C repo fsck
+'
+
+test_expect_success 'missing CLI object, but promised, passes fsck' '
+ rm -rf repo &&
+ test_create_repo repo &&
+ test_commit -C repo my_commit &&
+
+ A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
+ promise_and_delete "$A" &&
+
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "arbitrary string" &&
+ git -C repo fsck "$A"
+'
+
+test_expect_success 'fetching of missing objects' '
+ rm -rf repo &&
+ test_create_repo server &&
+ test_commit -C server foo &&
+ git -C server repack -a -d --write-bitmap-index &&
+
+ git clone "file://$(pwd)/server" repo &&
+ HASH=$(git -C repo rev-parse foo) &&
+ rm -rf repo/.git/objects/* &&
+
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "origin" &&
+ git -C repo cat-file -p "$HASH" &&
+
+ # Ensure that the .promisor file is written, and check that its
+ # associated packfile contains the object
+ ls repo/.git/objects/pack/pack-*.promisor >promisorlist &&
+ test_line_count = 1 promisorlist &&
+ IDX=$(cat promisorlist | sed "s/promisor$/idx/") &&
+ git verify-pack --verbose "$IDX" | grep "$HASH"
+'
+
+test_expect_success 'fetching of missing objects works with ref-in-want enabled' '
+ # ref-in-want requires protocol version 2
+ git -C server config protocol.version 2 &&
+ git -C server config uploadpack.allowrefinwant 1 &&
+ git -C repo config protocol.version 2 &&
+
+ rm -rf repo/.git/objects/* &&
+ rm -f trace &&
+ GIT_TRACE_PACKET="$(pwd)/trace" git -C repo cat-file -p "$HASH" &&
+ grep "git< fetch=.*ref-in-want" trace
+'
+
+test_expect_success 'fetching of missing blobs works' '
+ rm -rf server repo &&
+ test_create_repo server &&
+ test_commit -C server foo &&
+ git -C server repack -a -d --write-bitmap-index &&
+
+ git clone "file://$(pwd)/server" repo &&
+ git hash-object repo/foo.t >blobhash &&
+ rm -rf repo/.git/objects/* &&
+
+ git -C server config uploadpack.allowanysha1inwant 1 &&
+ git -C server config uploadpack.allowfilter 1 &&
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "origin" &&
+
+ git -C repo cat-file -p $(cat blobhash)
+'
+
+test_expect_success 'fetching of missing trees does not fetch blobs' '
+ rm -rf server repo &&
+ test_create_repo server &&
+ test_commit -C server foo &&
+ git -C server repack -a -d --write-bitmap-index &&
+
+ git clone "file://$(pwd)/server" repo &&
+ git -C repo rev-parse foo^{tree} >treehash &&
+ git hash-object repo/foo.t >blobhash &&
+ rm -rf repo/.git/objects/* &&
+
+ git -C server config uploadpack.allowanysha1inwant 1 &&
+ git -C server config uploadpack.allowfilter 1 &&
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "origin" &&
+ git -C repo cat-file -p $(cat treehash) &&
+
+ # Ensure that the tree, but not the blob, is fetched
+ git -C repo rev-list --objects --missing=print $(cat treehash) >objects &&
+ grep "^$(cat treehash)" objects &&
+ grep "^[?]$(cat blobhash)" objects
+'
+
+test_expect_success 'rev-list stops traversal at missing and promised commit' '
+ rm -rf repo &&
+ test_create_repo repo &&
+ test_commit -C repo foo &&
+ test_commit -C repo bar &&
+
+ FOO=$(git -C repo rev-parse foo) &&
+ promise_and_delete "$FOO" &&
+
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "arbitrary string" &&
+ GIT_TEST_COMMIT_GRAPH=0 git -C repo rev-list --exclude-promisor-objects --objects bar >out &&
+ grep $(git -C repo rev-parse bar) out &&
+ ! grep $FOO out
+'
+
+test_expect_success 'missing tree objects with --missing=allow-promisor and --exclude-promisor-objects' '
+ rm -rf repo &&
+ test_create_repo repo &&
+ test_commit -C repo foo &&
+ test_commit -C repo bar &&
+ test_commit -C repo baz &&
+
+ promise_and_delete $(git -C repo rev-parse bar^{tree}) &&
+ promise_and_delete $(git -C repo rev-parse foo^{tree}) &&
+
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "arbitrary string" &&
+
+ git -C repo rev-list --missing=allow-promisor --objects HEAD >objs 2>rev_list_err &&
+ test_must_be_empty rev_list_err &&
+ # 3 commits, 3 blobs, and 1 tree
+ test_line_count = 7 objs &&
+
+ # Do the same for --exclude-promisor-objects, but with all trees gone.
+ promise_and_delete $(git -C repo rev-parse baz^{tree}) &&
+ git -C repo rev-list --exclude-promisor-objects --objects HEAD >objs 2>rev_list_err &&
+ test_must_be_empty rev_list_err &&
+ # 3 commits, no blobs or trees
+ test_line_count = 3 objs
+'
+
+test_expect_success 'missing non-root tree object and rev-list' '
+ rm -rf repo &&
+ test_create_repo repo &&
+ mkdir repo/dir &&
+ echo foo >repo/dir/foo &&
+ git -C repo add dir/foo &&
+ git -C repo commit -m "commit dir/foo" &&
+
+ promise_and_delete $(git -C repo rev-parse HEAD:dir) &&
+
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "arbitrary string" &&
+
+ git -C repo rev-list --missing=allow-any --objects HEAD >objs 2>rev_list_err &&
+ test_must_be_empty rev_list_err &&
+ # 1 commit and 1 tree
+ test_line_count = 2 objs
+'
+
+test_expect_success 'rev-list stops traversal at missing and promised tree' '
+ rm -rf repo &&
+ test_create_repo repo &&
+ test_commit -C repo foo &&
+ mkdir repo/a_dir &&
+ echo something >repo/a_dir/something &&
+ git -C repo add a_dir/something &&
+ git -C repo commit -m bar &&
+
+ # foo^{tree} (tree referenced from commit)
+ TREE=$(git -C repo rev-parse foo^{tree}) &&
+
+ # a tree referenced by HEAD^{tree} (tree referenced from tree)
+ TREE2=$(git -C repo ls-tree HEAD^{tree} | grep " tree " | head -1 | cut -b13-52) &&
+
+ promise_and_delete "$TREE" &&
+ promise_and_delete "$TREE2" &&
+
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "arbitrary string" &&
+ git -C repo rev-list --exclude-promisor-objects --objects HEAD >out &&
+ grep $(git -C repo rev-parse foo) out &&
+ ! grep $TREE out &&
+ grep $(git -C repo rev-parse HEAD) out &&
+ ! grep $TREE2 out
+'
+
+test_expect_success 'rev-list stops traversal at missing and promised blob' '
+ rm -rf repo &&
+ test_create_repo repo &&
+ echo something >repo/something &&
+ git -C repo add something &&
+ git -C repo commit -m foo &&
+
+ BLOB=$(git -C repo hash-object -w something) &&
+ promise_and_delete "$BLOB" &&
+
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "arbitrary string" &&
+ git -C repo rev-list --exclude-promisor-objects --objects HEAD >out &&
+ grep $(git -C repo rev-parse HEAD) out &&
+ ! grep $BLOB out
+'
+
+test_expect_success 'rev-list stops traversal at promisor commit, tree, and blob' '
+ rm -rf repo &&
+ test_create_repo repo &&
+ test_commit -C repo foo &&
+ test_commit -C repo bar &&
+ test_commit -C repo baz &&
+
+ COMMIT=$(git -C repo rev-parse foo) &&
+ TREE=$(git -C repo rev-parse bar^{tree}) &&
+ BLOB=$(git hash-object repo/baz.t) &&
+ printf "%s\n%s\n%s\n" $COMMIT $TREE $BLOB | pack_as_from_promisor &&
+
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "arbitrary string" &&
+ git -C repo rev-list --exclude-promisor-objects --objects HEAD >out &&
+ ! grep $COMMIT out &&
+ ! grep $TREE out &&
+ ! grep $BLOB out &&
+ grep $(git -C repo rev-parse bar) out # sanity check that some walking was done
+'
+
+test_expect_success 'rev-list dies for missing objects on cmd line' '
+ rm -rf repo &&
+ test_create_repo repo &&
+ test_commit -C repo foo &&
+ test_commit -C repo bar &&
+ test_commit -C repo baz &&
+
+ COMMIT=$(git -C repo rev-parse foo) &&
+ TREE=$(git -C repo rev-parse bar^{tree}) &&
+ BLOB=$(git hash-object repo/baz.t) &&
+
+ promise_and_delete $COMMIT &&
+ promise_and_delete $TREE &&
+ promise_and_delete $BLOB &&
+
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "arbitrary string" &&
+
+ for OBJ in "$COMMIT" "$TREE" "$BLOB"; do
+ test_must_fail git -C repo rev-list --objects \
+ --exclude-promisor-objects "$OBJ" &&
+ test_must_fail git -C repo rev-list --objects-edge-aggressive \
+ --exclude-promisor-objects "$OBJ" &&
+
+ # Do not die or crash when --ignore-missing is passed.
+ git -C repo rev-list --ignore-missing --objects \
+ --exclude-promisor-objects "$OBJ" &&
+ git -C repo rev-list --ignore-missing --objects-edge-aggressive \
+ --exclude-promisor-objects "$OBJ"
+ done
+'
+
+test_expect_success 'gc repacks promisor objects separately from non-promisor objects' '
+ rm -rf repo &&
+ test_create_repo repo &&
+ test_commit -C repo one &&
+ test_commit -C repo two &&
+
+ TREE_ONE=$(git -C repo rev-parse one^{tree}) &&
+ printf "$TREE_ONE\n" | pack_as_from_promisor &&
+ TREE_TWO=$(git -C repo rev-parse two^{tree}) &&
+ printf "$TREE_TWO\n" | pack_as_from_promisor &&
+
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "arbitrary string" &&
+ git -C repo gc &&
+
+ # Ensure that exactly one promisor packfile exists, and that it
+ # contains the trees but not the commits
+ ls repo/.git/objects/pack/pack-*.promisor >promisorlist &&
+ test_line_count = 1 promisorlist &&
+ PROMISOR_PACKFILE=$(sed "s/.promisor/.pack/" <promisorlist) &&
+ git verify-pack $PROMISOR_PACKFILE -v >out &&
+ grep "$TREE_ONE" out &&
+ grep "$TREE_TWO" out &&
+ ! grep "$(git -C repo rev-parse one)" out &&
+ ! grep "$(git -C repo rev-parse two)" out &&
+
+ # Remove the promisor packfile and associated files
+ rm $(sed "s/.promisor//" <promisorlist).* &&
+
+ # Ensure that the single other pack contains the commits, but not the
+ # trees
+ ls repo/.git/objects/pack/pack-*.pack >packlist &&
+ test_line_count = 1 packlist &&
+ git verify-pack repo/.git/objects/pack/pack-*.pack -v >out &&
+ grep "$(git -C repo rev-parse one)" out &&
+ grep "$(git -C repo rev-parse two)" out &&
+ ! grep "$TREE_ONE" out &&
+ ! grep "$TREE_TWO" out
+'
+
+test_expect_success 'gc does not repack promisor objects if there are none' '
+ rm -rf repo &&
+ test_create_repo repo &&
+ test_commit -C repo one &&
+
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "arbitrary string" &&
+ git -C repo gc &&
+
+ # Ensure that only one pack exists
+ ls repo/.git/objects/pack/pack-*.pack >packlist &&
+ test_line_count = 1 packlist
+'
+
+repack_and_check () {
+ rm -rf repo2 &&
+ cp -r repo repo2 &&
+ git -C repo2 repack $1 -d &&
+ git -C repo2 fsck &&
+
+ git -C repo2 cat-file -e $2 &&
+ git -C repo2 cat-file -e $3
+}
+
+test_expect_success 'repack -d does not irreversibly delete promisor objects' '
+ rm -rf repo &&
+ test_create_repo repo &&
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "arbitrary string" &&
+
+ git -C repo commit --allow-empty -m one &&
+ git -C repo commit --allow-empty -m two &&
+ git -C repo commit --allow-empty -m three &&
+ git -C repo commit --allow-empty -m four &&
+ ONE=$(git -C repo rev-parse HEAD^^^) &&
+ TWO=$(git -C repo rev-parse HEAD^^) &&
+ THREE=$(git -C repo rev-parse HEAD^) &&
+
+ printf "$TWO\n" | pack_as_from_promisor &&
+ printf "$THREE\n" | pack_as_from_promisor &&
+ delete_object repo "$ONE" &&
+
+ repack_and_check -a "$TWO" "$THREE" &&
+ repack_and_check -A "$TWO" "$THREE" &&
+ repack_and_check -l "$TWO" "$THREE"
+'
+
+test_expect_success 'gc stops traversal when a missing but promised object is reached' '
+ rm -rf repo &&
+ test_create_repo repo &&
+ test_commit -C repo my_commit &&
+
+ TREE_HASH=$(git -C repo rev-parse HEAD^{tree}) &&
+ HASH=$(promise_and_delete $TREE_HASH) &&
+
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "arbitrary string" &&
+ git -C repo gc &&
+
+ # Ensure that the promisor packfile still exists, and remove it
+ test -e repo/.git/objects/pack/pack-$HASH.pack &&
+ rm repo/.git/objects/pack/pack-$HASH.* &&
+
+ # Ensure that the single other pack contains the commit, but not the tree
+ ls repo/.git/objects/pack/pack-*.pack >packlist &&
+ test_line_count = 1 packlist &&
+ git verify-pack repo/.git/objects/pack/pack-*.pack -v >out &&
+ grep "$(git -C repo rev-parse HEAD)" out &&
+ ! grep "$TREE_HASH" out
+'
+
+LIB_HTTPD_PORT=12345 # default port, 410, cannot be used as non-root
+. "$TEST_DIRECTORY"/lib-httpd.sh
+start_httpd
+
+test_expect_success 'fetching of missing objects from an HTTP server' '
+ rm -rf repo &&
+ SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
+ test_create_repo "$SERVER" &&
+ test_commit -C "$SERVER" foo &&
+ git -C "$SERVER" repack -a -d --write-bitmap-index &&
+
+ git clone $HTTPD_URL/smart/server repo &&
+ HASH=$(git -C repo rev-parse foo) &&
+ rm -rf repo/.git/objects/* &&
+
+ git -C repo config core.repositoryformatversion 1 &&
+ git -C repo config extensions.partialclone "origin" &&
+ git -C repo cat-file -p "$HASH" &&
+
+ # Ensure that the .promisor file is written, and check that its
+ # associated packfile contains the object
+ ls repo/.git/objects/pack/pack-*.promisor >promisorlist &&
+ test_line_count = 1 promisorlist &&
+ IDX=$(cat promisorlist | sed "s/promisor$/idx/") &&
+ git verify-pack --verbose "$IDX" | grep "$HASH"
+'
+
+stop_httpd
+
+test_done
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