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+#!/bin/sh
+
+test_description='git partial clone'
+
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+
+. ./test-lib.sh
+
+# create a normal "src" repo where we can later create new commits.
+# expect_1.oids will contain a list of the OIDs of all blobs.
+test_expect_success 'setup normal src repo' '
+ echo "{print \$1}" >print_1.awk &&
+ echo "{print \$2}" >print_2.awk &&
+
+ git init src &&
+ for n in 1 2 3 4
+ do
+ echo "This is file: $n" > src/file.$n.txt &&
+ git -C src add file.$n.txt &&
+ git -C src commit -m "file $n" &&
+ git -C src ls-files -s file.$n.txt >>temp || return 1
+ done &&
+ awk -f print_2.awk <temp | sort >expect_1.oids &&
+ test_line_count = 4 expect_1.oids
+'
+
+# bare clone "src" giving "srv.bare" for use as our server.
+test_expect_success 'setup bare clone for server' '
+ git clone --bare "file://$(pwd)/src" srv.bare &&
+ git -C srv.bare config --local uploadpack.allowfilter 1 &&
+ git -C srv.bare config --local uploadpack.allowanysha1inwant 1
+'
+
+# do basic partial clone from "srv.bare"
+# confirm we are missing all of the known blobs.
+# confirm partial clone was registered in the local config.
+test_expect_success 'do partial clone 1' '
+ git clone --no-checkout --filter=blob:none "file://$(pwd)/srv.bare" pc1 &&
+
+ git -C pc1 rev-list --quiet --objects --missing=print HEAD >revs &&
+ awk -f print_1.awk revs |
+ sed "s/?//" |
+ sort >observed.oids &&
+
+ test_cmp expect_1.oids observed.oids &&
+ test "$(git -C pc1 config --local core.repositoryformatversion)" = "1" &&
+ test "$(git -C pc1 config --local remote.origin.promisor)" = "true" &&
+ test "$(git -C pc1 config --local remote.origin.partialclonefilter)" = "blob:none"
+'
+
+test_expect_success 'rev-list --missing=allow-promisor on partial clone' '
+ git -C pc1 rev-list --objects --missing=allow-promisor HEAD >actual &&
+ git -C pc1 rev-list --objects --missing=print HEAD >expect.raw &&
+ grep -v "^?" expect.raw >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'verify that .promisor file contains refs fetched' '
+ ls pc1/.git/objects/pack/pack-*.promisor >promisorlist &&
+ test_line_count = 1 promisorlist &&
+ git -C srv.bare rev-parse --verify HEAD >headhash &&
+ grep "$(cat headhash) HEAD" $(cat promisorlist) &&
+ grep "$(cat headhash) refs/heads/main" $(cat promisorlist)
+'
+
+# checkout main to force dynamic object fetch of blobs at HEAD.
+test_expect_success 'verify checkout with dynamic object fetch' '
+ git -C pc1 rev-list --quiet --objects --missing=print HEAD >observed &&
+ test_line_count = 4 observed &&
+ git -C pc1 checkout main &&
+ git -C pc1 rev-list --quiet --objects --missing=print HEAD >observed &&
+ test_line_count = 0 observed
+'
+
+# create new commits in "src" repo to establish a blame history on file.1.txt
+# and push to "srv.bare".
+test_expect_success 'push new commits to server' '
+ git -C src remote add srv "file://$(pwd)/srv.bare" &&
+ for x in a b c d e
+ do
+ echo "Mod file.1.txt $x" >>src/file.1.txt &&
+ git -C src add file.1.txt &&
+ git -C src commit -m "mod $x" || return 1
+ done &&
+ git -C src blame main -- file.1.txt >expect.blame &&
+ git -C src push -u srv main
+'
+
+# (partial) fetch in the partial clone repo from the promisor remote.
+# verify that fetch inherited the filter-spec from the config and DOES NOT
+# have the new blobs.
+test_expect_success 'partial fetch inherits filter settings' '
+ git -C pc1 fetch origin &&
+ git -C pc1 rev-list --quiet --objects --missing=print \
+ main..origin/main >observed &&
+ test_line_count = 5 observed
+'
+
+# force dynamic object fetch using diff.
+# we should only get 1 new blob (for the file in origin/main).
+test_expect_success 'verify diff causes dynamic object fetch' '
+ git -C pc1 diff main..origin/main -- file.1.txt &&
+ git -C pc1 rev-list --quiet --objects --missing=print \
+ main..origin/main >observed &&
+ test_line_count = 4 observed
+'
+
+# force full dynamic object fetch of the file's history using blame.
+# we should get the intermediate blobs for the file.
+test_expect_success 'verify blame causes dynamic object fetch' '
+ git -C pc1 blame origin/main -- file.1.txt >observed.blame &&
+ test_cmp expect.blame observed.blame &&
+ git -C pc1 rev-list --quiet --objects --missing=print \
+ main..origin/main >observed &&
+ test_line_count = 0 observed
+'
+
+# create new commits in "src" repo to establish a history on file.2.txt
+# and push to "srv.bare".
+test_expect_success 'push new commits to server for file.2.txt' '
+ for x in a b c d e f
+ do
+ echo "Mod file.2.txt $x" >>src/file.2.txt &&
+ git -C src add file.2.txt &&
+ git -C src commit -m "mod $x" || return 1
+ done &&
+ git -C src push -u srv main
+'
+
+# Do FULL fetch by disabling inherited filter-spec using --no-filter.
+# Verify we have all the new blobs.
+test_expect_success 'override inherited filter-spec using --no-filter' '
+ git -C pc1 fetch --no-filter origin &&
+ git -C pc1 rev-list --quiet --objects --missing=print \
+ main..origin/main >observed &&
+ test_line_count = 0 observed
+'
+
+# create new commits in "src" repo to establish a history on file.3.txt
+# and push to "srv.bare".
+test_expect_success 'push new commits to server for file.3.txt' '
+ for x in a b c d e f
+ do
+ echo "Mod file.3.txt $x" >>src/file.3.txt &&
+ git -C src add file.3.txt &&
+ git -C src commit -m "mod $x" || return 1
+ done &&
+ git -C src push -u srv main
+'
+
+# Do a partial fetch and then try to manually fetch the missing objects.
+# This can be used as the basis of a pre-command hook to bulk fetch objects
+# perhaps combined with a command in dry-run mode.
+test_expect_success 'manual prefetch of missing objects' '
+ git -C pc1 fetch --filter=blob:none origin &&
+
+ git -C pc1 rev-list --quiet --objects --missing=print \
+ main..origin/main >revs &&
+ awk -f print_1.awk revs |
+ sed "s/?//" |
+ sort >observed.oids &&
+
+ test_line_count = 6 observed.oids &&
+ git -C pc1 fetch-pack --stdin "file://$(pwd)/srv.bare" <observed.oids &&
+
+ git -C pc1 rev-list --quiet --objects --missing=print \
+ main..origin/main >revs &&
+ awk -f print_1.awk revs |
+ sed "s/?//" |
+ sort >observed.oids &&
+
+ test_line_count = 0 observed.oids
+'
+
+# create new commits in "src" repo to establish a history on file.4.txt
+# and push to "srv.bare".
+test_expect_success 'push new commits to server for file.4.txt' '
+ for x in a b c d e f
+ do
+ echo "Mod file.4.txt $x" >src/file.4.txt &&
+ if list_contains "a,b" "$x"; then
+ printf "%10000s" X >>src/file.4.txt
+ fi &&
+ if list_contains "c,d" "$x"; then
+ printf "%20000s" X >>src/file.4.txt
+ fi &&
+ git -C src add file.4.txt &&
+ git -C src commit -m "mod $x" || return 1
+ done &&
+ git -C src push -u srv main
+'
+
+# Do partial fetch to fetch smaller files; then verify that without --refetch
+# applying a new filter does not refetch missing large objects. Then use
+# --refetch to apply the new filter on existing commits. Test it under both
+# protocol v2 & v0.
+test_expect_success 'apply a different filter using --refetch' '
+ git -C pc1 fetch --filter=blob:limit=999 origin &&
+ git -C pc1 rev-list --quiet --objects --missing=print \
+ main..origin/main >observed &&
+ test_line_count = 4 observed &&
+
+ git -C pc1 fetch --filter=blob:limit=19999 --refetch origin &&
+ git -C pc1 rev-list --quiet --objects --missing=print \
+ main..origin/main >observed &&
+ test_line_count = 2 observed &&
+
+ git -c protocol.version=0 -C pc1 fetch --filter=blob:limit=29999 \
+ --refetch origin &&
+ git -C pc1 rev-list --quiet --objects --missing=print \
+ main..origin/main >observed &&
+ test_line_count = 0 observed
+'
+
+test_expect_success 'fetch --refetch works with a shallow clone' '
+ git clone --no-checkout --depth=1 --filter=blob:none "file://$(pwd)/srv.bare" pc1s &&
+ git -C pc1s rev-list --objects --missing=print HEAD >observed &&
+ test_line_count = 6 observed &&
+
+ GIT_TRACE=1 git -C pc1s fetch --filter=blob:limit=999 --refetch origin &&
+ git -C pc1s rev-list --objects --missing=print HEAD >observed &&
+ test_line_count = 6 observed
+'
+
+test_expect_success 'fetch --refetch triggers repacking' '
+ GIT_TRACE2_CONFIG_PARAMS=gc.autoPackLimit,maintenance.incremental-repack.auto &&
+ export GIT_TRACE2_CONFIG_PARAMS &&
+
+ GIT_TRACE2_EVENT="$PWD/trace1.event" \
+ git -C pc1 fetch --refetch origin &&
+ test_subcommand git maintenance run --auto --no-quiet <trace1.event &&
+ grep \"param\":\"gc.autopacklimit\",\"value\":\"1\" trace1.event &&
+ grep \"param\":\"maintenance.incremental-repack.auto\",\"value\":\"-1\" trace1.event &&
+
+ GIT_TRACE2_EVENT="$PWD/trace2.event" \
+ git -c protocol.version=0 \
+ -c gc.autoPackLimit=0 \
+ -c maintenance.incremental-repack.auto=1234 \
+ -C pc1 fetch --refetch origin &&
+ test_subcommand git maintenance run --auto --no-quiet <trace2.event &&
+ grep \"param\":\"gc.autopacklimit\",\"value\":\"0\" trace2.event &&
+ grep \"param\":\"maintenance.incremental-repack.auto\",\"value\":\"-1\" trace2.event &&
+
+ GIT_TRACE2_EVENT="$PWD/trace3.event" \
+ git -c protocol.version=0 \
+ -c gc.autoPackLimit=1234 \
+ -c maintenance.incremental-repack.auto=0 \
+ -C pc1 fetch --refetch origin &&
+ test_subcommand git maintenance run --auto --no-quiet <trace3.event &&
+ grep \"param\":\"gc.autopacklimit\",\"value\":\"1\" trace3.event &&
+ grep \"param\":\"maintenance.incremental-repack.auto\",\"value\":\"0\" trace3.event
+'
+
+test_expect_success 'partial clone with transfer.fsckobjects=1 works with submodules' '
+ test_create_repo submodule &&
+ test_commit -C submodule mycommit &&
+
+ test_create_repo src_with_sub &&
+ test_config -C src_with_sub uploadpack.allowfilter 1 &&
+ test_config -C src_with_sub uploadpack.allowanysha1inwant 1 &&
+
+ test_config_global protocol.file.allow always &&
+
+ git -C src_with_sub submodule add "file://$(pwd)/submodule" mysub &&
+ git -C src_with_sub commit -m "commit with submodule" &&
+
+ git -c transfer.fsckobjects=1 \
+ clone --filter="blob:none" "file://$(pwd)/src_with_sub" dst &&
+ test_when_finished rm -rf dst
+'
+
+test_expect_success 'partial clone with transfer.fsckobjects=1 uses index-pack --fsck-objects' '
+ git init src &&
+ test_commit -C src x &&
+ test_config -C src uploadpack.allowfilter 1 &&
+ test_config -C src uploadpack.allowanysha1inwant 1 &&
+
+ GIT_TRACE="$(pwd)/trace" git -c transfer.fsckobjects=1 \
+ clone --filter="blob:none" "file://$(pwd)/src" dst &&
+ grep "git index-pack.*--fsck-objects" trace
+'
+
+test_expect_success 'use fsck before and after manually fetching a missing subtree' '
+ # push new commit so server has a subtree
+ mkdir src/dir &&
+ echo "in dir" >src/dir/file.txt &&
+ git -C src add dir/file.txt &&
+ git -C src commit -m "file in dir" &&
+ git -C src push -u srv main &&
+ SUBTREE=$(git -C src rev-parse HEAD:dir) &&
+
+ rm -rf dst &&
+ git clone --no-checkout --filter=tree:0 "file://$(pwd)/srv.bare" dst &&
+ git -C dst fsck &&
+
+ # Make sure we only have commits, and all trees and blobs are missing.
+ git -C dst rev-list --missing=allow-any --objects main \
+ >fetched_objects &&
+ awk -f print_1.awk fetched_objects |
+ xargs -n1 git -C dst cat-file -t >fetched_types &&
+
+ sort -u fetched_types >unique_types.observed &&
+ echo commit >unique_types.expected &&
+ test_cmp unique_types.expected unique_types.observed &&
+
+ # Auto-fetch a tree with cat-file.
+ git -C dst cat-file -p $SUBTREE >tree_contents &&
+ grep file.txt tree_contents &&
+
+ # fsck still works after an auto-fetch of a tree.
+ git -C dst fsck &&
+
+ # Auto-fetch all remaining trees and blobs with --missing=error
+ git -C dst rev-list --missing=error --objects main >fetched_objects &&
+ test_line_count = 88 fetched_objects &&
+
+ awk -f print_1.awk fetched_objects |
+ xargs -n1 git -C dst cat-file -t >fetched_types &&
+
+ sort -u fetched_types >unique_types.observed &&
+ test_write_lines blob commit tree >unique_types.expected &&
+ test_cmp unique_types.expected unique_types.observed
+'
+
+test_expect_success 'implicitly construct combine: filter with repeated flags' '
+ GIT_TRACE=$(pwd)/trace git clone --bare \
+ --filter=blob:none --filter=tree:1 \
+ "file://$(pwd)/srv.bare" pc2 &&
+ grep "trace:.* git pack-objects .*--filter=combine:blob:none+tree:1" \
+ trace &&
+ git -C pc2 rev-list --objects --missing=allow-any HEAD >objects &&
+
+ # We should have gotten some root trees.
+ grep " $" objects &&
+ # Should not have gotten any non-root trees or blobs.
+ ! grep " ." objects &&
+
+ xargs -n 1 git -C pc2 cat-file -t <objects >types &&
+ sort -u types >unique_types.actual &&
+ test_write_lines commit tree >unique_types.expected &&
+ test_cmp unique_types.expected unique_types.actual
+'
+
+test_expect_success 'upload-pack complains of bogus filter config' '
+ printf 0000 |
+ test_must_fail git \
+ -c uploadpackfilter.tree.maxdepth \
+ upload-pack . >/dev/null 2>err &&
+ test_i18ngrep "unable to parse.*tree.maxdepth" err
+'
+
+test_expect_success 'upload-pack fails banned object filters' '
+ test_config -C srv.bare uploadpackfilter.blob:none.allow false &&
+ test_must_fail ok=sigpipe git clone --no-checkout --filter=blob:none \
+ "file://$(pwd)/srv.bare" pc3 2>err &&
+ test_i18ngrep "filter '\''blob:none'\'' not supported" err
+'
+
+test_expect_success 'upload-pack fails banned combine object filters' '
+ test_config -C srv.bare uploadpackfilter.allow false &&
+ test_config -C srv.bare uploadpackfilter.combine.allow true &&
+ test_config -C srv.bare uploadpackfilter.tree.allow true &&
+ test_config -C srv.bare uploadpackfilter.blob:none.allow false &&
+ test_must_fail ok=sigpipe git clone --no-checkout --filter=tree:1 \
+ --filter=blob:none "file://$(pwd)/srv.bare" pc3 2>err &&
+ test_i18ngrep "filter '\''blob:none'\'' not supported" err
+'
+
+test_expect_success 'upload-pack fails banned object filters with fallback' '
+ test_config -C srv.bare uploadpackfilter.allow false &&
+ test_must_fail ok=sigpipe git clone --no-checkout --filter=blob:none \
+ "file://$(pwd)/srv.bare" pc3 2>err &&
+ test_i18ngrep "filter '\''blob:none'\'' not supported" err
+'
+
+test_expect_success 'upload-pack limits tree depth filters' '
+ test_config -C srv.bare uploadpackfilter.allow false &&
+ test_config -C srv.bare uploadpackfilter.tree.allow true &&
+ test_config -C srv.bare uploadpackfilter.tree.maxDepth 0 &&
+ test_must_fail ok=sigpipe git clone --no-checkout --filter=tree:1 \
+ "file://$(pwd)/srv.bare" pc3 2>err &&
+ test_i18ngrep "tree filter allows max depth 0, but got 1" err &&
+
+ git clone --no-checkout --filter=tree:0 "file://$(pwd)/srv.bare" pc4 &&
+
+ test_config -C srv.bare uploadpackfilter.tree.maxDepth 5 &&
+ git clone --no-checkout --filter=tree:5 "file://$(pwd)/srv.bare" pc5 &&
+ test_must_fail ok=sigpipe git clone --no-checkout --filter=tree:6 \
+ "file://$(pwd)/srv.bare" pc6 2>err &&
+ test_i18ngrep "tree filter allows max depth 5, but got 6" err
+'
+
+test_expect_success 'partial clone fetches blobs pointed to by refs even if normally filtered out' '
+ rm -rf src dst &&
+ git init src &&
+ test_commit -C src x &&
+ test_config -C src uploadpack.allowfilter 1 &&
+ test_config -C src uploadpack.allowanysha1inwant 1 &&
+
+ # Create a tag pointing to a blob.
+ BLOB=$(echo blob-contents | git -C src hash-object --stdin -w) &&
+ git -C src tag myblob "$BLOB" &&
+
+ git clone --filter="blob:none" "file://$(pwd)/src" dst 2>err &&
+ ! grep "does not point to a valid object" err &&
+ git -C dst fsck
+'
+
+test_expect_success 'fetch what is specified on CLI even if already promised' '
+ rm -rf src dst.git &&
+ git init src &&
+ test_commit -C src foo &&
+ test_config -C src uploadpack.allowfilter 1 &&
+ test_config -C src uploadpack.allowanysha1inwant 1 &&
+
+ git hash-object --stdin <src/foo.t >blob &&
+
+ git clone --bare --filter=blob:none "file://$(pwd)/src" dst.git &&
+ git -C dst.git rev-list --objects --quiet --missing=print HEAD >missing_before &&
+ grep "?$(cat blob)" missing_before &&
+ git -C dst.git fetch origin $(cat blob) &&
+ git -C dst.git rev-list --objects --quiet --missing=print HEAD >missing_after &&
+ ! grep "?$(cat blob)" missing_after
+'
+
+test_expect_success 'setup src repo for sparse filter' '
+ git init sparse-src &&
+ git -C sparse-src config --local uploadpack.allowfilter 1 &&
+ git -C sparse-src config --local uploadpack.allowanysha1inwant 1 &&
+ test_commit -C sparse-src one &&
+ test_commit -C sparse-src two &&
+ echo /one.t >sparse-src/only-one &&
+ git -C sparse-src add . &&
+ git -C sparse-src commit -m "add sparse checkout files"
+'
+
+test_expect_success 'partial clone with sparse filter succeeds' '
+ rm -rf dst.git &&
+ git clone --no-local --bare \
+ --filter=sparse:oid=main:only-one \
+ sparse-src dst.git &&
+ (
+ cd dst.git &&
+ git rev-list --objects --missing=print HEAD >out &&
+ grep "^$(git rev-parse HEAD:one.t)" out &&
+ grep "^?$(git rev-parse HEAD:two.t)" out
+ )
+'
+
+test_expect_success 'partial clone with unresolvable sparse filter fails cleanly' '
+ rm -rf dst.git &&
+ test_must_fail git clone --no-local --bare \
+ --filter=sparse:oid=main:no-such-name \
+ sparse-src dst.git 2>err &&
+ test_i18ngrep "unable to access sparse blob in .main:no-such-name" err &&
+ test_must_fail git clone --no-local --bare \
+ --filter=sparse:oid=main \
+ sparse-src dst.git 2>err &&
+ test_i18ngrep "unable to parse sparse filter data in" err
+'
+
+setup_triangle () {
+ rm -rf big-blob.txt server client promisor-remote &&
+
+ printf "line %d\n" $(test_seq 1 100) >big-blob.txt &&
+
+ # Create a server with 2 commits: a commit with a big tree and a child
+ # commit with an incremental change. Also, create a partial clone
+ # client that only contains the first commit.
+ git init server &&
+ git -C server config --local uploadpack.allowfilter 1 &&
+ for i in $(test_seq 1 100)
+ do
+ echo "make the tree big" >server/file$i &&
+ git -C server add file$i || return 1
+ done &&
+ git -C server commit -m "initial" &&
+ git clone --bare --filter=tree:0 "file://$(pwd)/server" client &&
+ echo another line >>server/file1 &&
+ git -C server commit -am "incremental change" &&
+
+ # Create a promisor remote that only contains the tree and blob from
+ # the first commit.
+ git init promisor-remote &&
+ git -C server config --local uploadpack.allowanysha1inwant 1 &&
+ TREE_HASH=$(git -C server rev-parse HEAD~1^{tree}) &&
+ git -C promisor-remote fetch --keep "file://$(pwd)/server" "$TREE_HASH" &&
+ git -C promisor-remote count-objects -v >object-count &&
+ test_i18ngrep "count: 0" object-count &&
+ test_i18ngrep "in-pack: 2" object-count &&
+
+ # Set it as the promisor remote of client. Thus, whenever
+ # the client lazy fetches, the lazy fetch will succeed only if it is
+ # for this tree or blob.
+ test_commit -C promisor-remote one && # so that ref advertisement is not empty
+ git -C promisor-remote config --local uploadpack.allowanysha1inwant 1 &&
+ git -C client remote set-url origin "file://$(pwd)/promisor-remote"
+}
+
+# NEEDSWORK: The tests beginning with "fetch lazy-fetches" below only
+# test that "fetch" avoid fetching trees and blobs, but not commits or
+# tags. Revisit this if Git is ever taught to support partial clones
+# with commits and/or tags filtered out.
+
+test_expect_success 'fetch lazy-fetches only to resolve deltas' '
+ setup_triangle &&
+
+ # Exercise to make sure it works. Git will not fetch anything from the
+ # promisor remote other than for the big tree (because it needs to
+ # resolve the delta).
+ GIT_TRACE_PACKET="$(pwd)/trace" git -C client \
+ fetch "file://$(pwd)/server" main &&
+
+ # Verify the assumption that the client needed to fetch the delta base
+ # to resolve the delta.
+ git -C server rev-parse HEAD~1^{tree} >hash &&
+ grep "want $(cat hash)" trace
+'
+
+test_expect_success 'fetch lazy-fetches only to resolve deltas, protocol v2' '
+ setup_triangle &&
+
+ git -C server config --local protocol.version 2 &&
+ git -C client config --local protocol.version 2 &&
+ git -C promisor-remote config --local protocol.version 2 &&
+
+ # Exercise to make sure it works. Git will not fetch anything from the
+ # promisor remote other than for the big blob (because it needs to
+ # resolve the delta).
+ GIT_TRACE_PACKET="$(pwd)/trace" git -C client \
+ fetch "file://$(pwd)/server" main &&
+
+ # Verify that protocol version 2 was used.
+ grep "fetch< version 2" trace &&
+
+ # Verify the assumption that the client needed to fetch the delta base
+ # to resolve the delta.
+ git -C server rev-parse HEAD~1^{tree} >hash &&
+ grep "want $(cat hash)" trace
+'
+
+test_expect_success 'fetch does not lazy-fetch missing targets of its refs' '
+ rm -rf server client trace &&
+
+ test_create_repo server &&
+ test_config -C server uploadpack.allowfilter 1 &&
+ test_config -C server uploadpack.allowanysha1inwant 1 &&
+ test_commit -C server foo &&
+
+ git clone --filter=blob:none "file://$(pwd)/server" client &&
+ # Make all refs point to nothing by deleting all objects.
+ rm client/.git/objects/pack/* &&
+
+ test_commit -C server bar &&
+ GIT_TRACE_PACKET="$(pwd)/trace" git -C client fetch \
+ --no-tags --recurse-submodules=no \
+ origin refs/tags/bar &&
+ FOO_HASH=$(git -C server rev-parse foo) &&
+ ! grep "want $FOO_HASH" trace
+'
+
+# The following two tests must be in this order. It is important that
+# the srv.bare repository did not have tags during clone, but has tags
+# in the fetch.
+
+test_expect_success 'verify fetch succeeds when asking for new tags' '
+ git clone --filter=blob:none "file://$(pwd)/srv.bare" tag-test &&
+ for i in I J K
+ do
+ test_commit -C src $i &&
+ git -C src branch $i || return 1
+ done &&
+ git -C srv.bare fetch --tags origin +refs/heads/*:refs/heads/* &&
+ git -C tag-test -c protocol.version=2 fetch --tags origin
+'
+
+test_expect_success 'verify fetch downloads only one pack when updating refs' '
+ git clone --filter=blob:none "file://$(pwd)/srv.bare" pack-test &&
+ ls pack-test/.git/objects/pack/*pack >pack-list &&
+ test_line_count = 2 pack-list &&
+ for i in A B C
+ do
+ test_commit -C src $i &&
+ git -C src branch $i || return 1
+ done &&
+ git -C srv.bare fetch origin +refs/heads/*:refs/heads/* &&
+ git -C pack-test fetch origin &&
+ ls pack-test/.git/objects/pack/*pack >pack-list &&
+ test_line_count = 3 pack-list
+'
+
+test_expect_success 'single-branch tag following respects partial clone' '
+ git clone --single-branch -b B --filter=blob:none \
+ "file://$(pwd)/srv.bare" single &&
+ git -C single rev-parse --verify refs/tags/B &&
+ git -C single rev-parse --verify refs/tags/A &&
+ test_must_fail git -C single rev-parse --verify refs/tags/C
+'
+
+test_expect_success 'fetch from a partial clone, protocol v0' '
+ rm -rf server client trace &&
+
+ # Pretend that the server is a partial clone
+ git init server &&
+ git -C server remote add a_remote "file://$(pwd)/" &&
+ test_config -C server core.repositoryformatversion 1 &&
+ test_config -C server extensions.partialclone a_remote &&
+ test_config -C server protocol.version 0 &&
+ test_commit -C server foo &&
+
+ # Fetch from the server
+ git init client &&
+ test_config -C client protocol.version 0 &&
+ test_commit -C client bar &&
+ GIT_TRACE_PACKET="$(pwd)/trace" git -C client fetch "file://$(pwd)/server" &&
+ ! grep "version 2" trace
+'
+
+test_expect_success 'fetch from a partial clone, protocol v2' '
+ rm -rf server client trace &&
+
+ # Pretend that the server is a partial clone
+ git init server &&
+ git -C server remote add a_remote "file://$(pwd)/" &&
+ test_config -C server core.repositoryformatversion 1 &&
+ test_config -C server extensions.partialclone a_remote &&
+ test_config -C server protocol.version 2 &&
+ test_commit -C server foo &&
+
+ # Fetch from the server
+ git init client &&
+ test_config -C client protocol.version 2 &&
+ test_commit -C client bar &&
+ GIT_TRACE_PACKET="$(pwd)/trace" git -C client fetch "file://$(pwd)/server" &&
+ grep "version 2" trace
+'
+
+test_expect_success 'repack does not loosen promisor objects' '
+ rm -rf client trace &&
+ git clone --bare --filter=blob:none "file://$(pwd)/srv.bare" client &&
+ test_when_finished "rm -rf client trace" &&
+ GIT_TRACE2_PERF="$(pwd)/trace" git -C client repack -A -d &&
+ grep "loosen_unused_packed_objects/loosened:0" trace
+'
+
+. "$TEST_DIRECTORY"/lib-httpd.sh
+start_httpd
+
+# Converts bytes into their hexadecimal representation. For example,
+# "printf 'ab\r\n' | hex_unpack" results in '61620d0a'.
+hex_unpack () {
+ perl -e '$/ = undef; $input = <>; print unpack("H2" x length($input), $input)'
+}
+
+# Inserts $1 at the start of the string and every 2 characters thereafter.
+intersperse () {
+ sed 's/\(..\)/'$1'\1/g'
+}
+
+# Create a one-time-perl command to replace the existing packfile with $1.
+replace_packfile () {
+ # The protocol requires that the packfile be sent in sideband 1, hence
+ # the extra \x01 byte at the beginning.
+ cp $1 "$HTTPD_ROOT_PATH/one-time-pack" &&
+ echo 'if (/packfile/) {
+ print;
+ my $length = -s "one-time-pack";
+ printf "%04x\x01", $length + 5;
+ print `cat one-time-pack` . "0000";
+ last
+ }' >"$HTTPD_ROOT_PATH/one-time-perl"
+}
+
+test_expect_success 'upon cloning, check that all refs point to objects' '
+ SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
+ rm -rf "$SERVER" repo &&
+ test_create_repo "$SERVER" &&
+ test_commit -C "$SERVER" foo &&
+ test_config -C "$SERVER" uploadpack.allowfilter 1 &&
+ test_config -C "$SERVER" uploadpack.allowanysha1inwant 1 &&
+
+ # Create a tag pointing to a blob.
+ BLOB=$(echo blob-contents | git -C "$SERVER" hash-object --stdin -w) &&
+ git -C "$SERVER" tag myblob "$BLOB" &&
+
+ # Craft a packfile not including that blob.
+ git -C "$SERVER" rev-parse HEAD |
+ git -C "$SERVER" pack-objects --stdout >incomplete.pack &&
+
+ # Replace the existing packfile with the crafted one. The protocol
+ # requires that the packfile be sent in sideband 1, hence the extra
+ # \x01 byte at the beginning.
+ replace_packfile incomplete.pack &&
+
+ # Use protocol v2 because the perl command looks for the "packfile"
+ # section header.
+ test_config -C "$SERVER" protocol.version 2 &&
+ test_must_fail git -c protocol.version=2 clone \
+ --filter=blob:none $HTTPD_URL/one_time_perl/server repo 2>err &&
+
+ test_i18ngrep "did not send all necessary objects" err &&
+
+ # Ensure that the one-time-perl script was used.
+ ! test -e "$HTTPD_ROOT_PATH/one-time-perl"
+'
+
+test_expect_success 'when partial cloning, tolerate server not sending target of tag' '
+ SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
+ rm -rf "$SERVER" repo &&
+ test_create_repo "$SERVER" &&
+ test_commit -C "$SERVER" foo &&
+ test_config -C "$SERVER" uploadpack.allowfilter 1 &&
+ test_config -C "$SERVER" uploadpack.allowanysha1inwant 1 &&
+
+ # Create an annotated tag pointing to a blob.
+ BLOB=$(echo blob-contents | git -C "$SERVER" hash-object --stdin -w) &&
+ git -C "$SERVER" tag -m message -a myblob "$BLOB" &&
+
+ # Craft a packfile including the tag, but not the blob it points to.
+ # Also, omit objects referenced from HEAD in order to force a second
+ # fetch (to fetch missing objects) upon the automatic checkout that
+ # happens after a clone.
+ printf "%s\n%s\n--not\n%s\n%s\n" \
+ $(git -C "$SERVER" rev-parse HEAD) \
+ $(git -C "$SERVER" rev-parse myblob) \
+ $(git -C "$SERVER" rev-parse HEAD^{tree}) \
+ $(git -C "$SERVER" rev-parse myblob^{blob}) |
+ git -C "$SERVER" pack-objects --thin --stdout >incomplete.pack &&
+
+ # Replace the existing packfile with the crafted one. The protocol
+ # requires that the packfile be sent in sideband 1, hence the extra
+ # \x01 byte at the beginning.
+ replace_packfile incomplete.pack &&
+
+ # Use protocol v2 because the perl command looks for the "packfile"
+ # section header.
+ test_config -C "$SERVER" protocol.version 2 &&
+
+ # Exercise to make sure it works.
+ git -c protocol.version=2 clone \
+ --filter=blob:none $HTTPD_URL/one_time_perl/server repo 2> err &&
+ ! grep "missing object referenced by" err &&
+
+ # Ensure that the one-time-perl script was used.
+ ! test -e "$HTTPD_ROOT_PATH/one-time-perl"
+'
+
+test_expect_success 'tolerate server sending REF_DELTA against missing promisor objects' '
+ SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
+ rm -rf "$SERVER" repo &&
+ test_create_repo "$SERVER" &&
+ test_config -C "$SERVER" uploadpack.allowfilter 1 &&
+ test_config -C "$SERVER" uploadpack.allowanysha1inwant 1 &&
+
+ # Create a commit with 2 blobs to be used as delta bases.
+ for i in $(test_seq 10)
+ do
+ echo "this is a line" >>"$SERVER/foo.txt" &&
+ echo "this is another line" >>"$SERVER/have.txt" || return 1
+ done &&
+ git -C "$SERVER" add foo.txt have.txt &&
+ git -C "$SERVER" commit -m bar &&
+ git -C "$SERVER" rev-parse HEAD:foo.txt >deltabase_missing &&
+ git -C "$SERVER" rev-parse HEAD:have.txt >deltabase_have &&
+
+ # Clone. The client has deltabase_have but not deltabase_missing.
+ git -c protocol.version=2 clone --no-checkout \
+ --filter=blob:none $HTTPD_URL/one_time_perl/server repo &&
+ git -C repo hash-object -w -- "$SERVER/have.txt" &&
+
+ # Sanity check to ensure that the client does not have
+ # deltabase_missing.
+ git -C repo rev-list --objects --ignore-missing \
+ -- $(cat deltabase_missing) >objlist &&
+ test_line_count = 0 objlist &&
+
+ # Another commit. This commit will be fetched by the client.
+ echo "abcdefghijklmnopqrstuvwxyz" >>"$SERVER/foo.txt" &&
+ echo "abcdefghijklmnopqrstuvwxyz" >>"$SERVER/have.txt" &&
+ git -C "$SERVER" add foo.txt have.txt &&
+ git -C "$SERVER" commit -m baz &&
+
+ # Pack a thin pack containing, among other things, HEAD:foo.txt
+ # delta-ed against HEAD^:foo.txt and HEAD:have.txt delta-ed against
+ # HEAD^:have.txt.
+ printf "%s\n--not\n%s\n" \
+ $(git -C "$SERVER" rev-parse HEAD) \
+ $(git -C "$SERVER" rev-parse HEAD^) |
+ git -C "$SERVER" pack-objects --thin --stdout >thin.pack &&
+
+ # Ensure that the pack contains one delta against HEAD^:foo.txt. Since
+ # the delta contains at least 26 novel characters, the size cannot be
+ # contained in 4 bits, so the object header will take up 2 bytes. The
+ # most significant nybble of the first byte is 0b1111 (0b1 to indicate
+ # that the header continues, and 0b111 to indicate REF_DELTA), followed
+ # by any 3 nybbles, then the OID of the delta base.
+ printf "f.,..%s" $(intersperse "," <deltabase_missing) >want &&
+ hex_unpack <thin.pack | intersperse "," >have &&
+ grep $(cat want) have &&
+
+ # Ensure that the pack contains one delta against HEAD^:have.txt,
+ # similar to the above.
+ printf "f.,..%s" $(intersperse "," <deltabase_have) >want &&
+ hex_unpack <thin.pack | intersperse "," >have &&
+ grep $(cat want) have &&
+
+ replace_packfile thin.pack &&
+
+ # Use protocol v2 because the perl command looks for the "packfile"
+ # section header.
+ test_config -C "$SERVER" protocol.version 2 &&
+
+ # Fetch the thin pack and ensure that index-pack is able to handle the
+ # REF_DELTA object with a missing promisor delta base.
+ GIT_TRACE_PACKET="$(pwd)/trace" git -C repo -c protocol.version=2 fetch &&
+
+ # Ensure that the missing delta base was directly fetched, but not the
+ # one that the client has.
+ grep "want $(cat deltabase_missing)" trace &&
+ ! grep "want $(cat deltabase_have)" trace &&
+
+ # Ensure that the one-time-perl script was used.
+ ! test -e "$HTTPD_ROOT_PATH/one-time-perl"
+'
+
+# DO NOT add non-httpd-specific tests here, because the last part of this
+# test script is only executed when httpd is available and enabled.
+
+test_done
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-15 19:26:57 +0000