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| -rwxr-xr-x | t/t5616-partial-clone.sh | 879 |
1 files changed, 879 insertions, 0 deletions
diff --git a/t/t5616-partial-clone.sh b/t/t5616-partial-clone.sh new file mode 100755 index 0000000..2da7291 --- /dev/null +++ b/t/t5616-partial-clone.sh @@ -0,0 +1,879 @@ +#!/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="$PWD/trace3.event" \ + git -c protocol.version=0 \ + -c gc.autoPackLimit=1234 \ + -c maintenance.incremental-repack.auto=0 \ + -C pc1 fetch --refetch origin && + test_subcommand git maintenance run --auto --no-quiet <trace3.event && + grep \"param\":\"gc.autopacklimit\",\"value\":\"1\" trace3.event && + grep \"param\":\"maintenance.incremental-repack.auto\",\"value\":\"0\" trace3.event +' + +test_expect_success 'partial clone with transfer.fsckobjects=1 works with submodules' ' + test_create_repo submodule && + test_commit -C submodule mycommit && + + test_create_repo src_with_sub && + git -C src_with_sub config uploadpack.allowfilter 1 && + git -C src_with_sub config uploadpack.allowanysha1inwant 1 && + + test_config_global protocol.file.allow always && + + git -C src_with_sub submodule add "file://$(pwd)/submodule" mysub && + git -C src_with_sub commit -m "commit with submodule" && + + git -c transfer.fsckobjects=1 \ + clone --filter="blob:none" "file://$(pwd)/src_with_sub" dst && + test_when_finished rm -rf dst +' + +test_expect_success 'lazily fetched .gitmodules works' ' + git clone --filter="blob:none" --no-checkout "file://$(pwd)/src_with_sub" dst && + git -C dst fetch && + 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 " $" objects && + # Should not have gotten any non-root trees or blobs. + ! grep " ." objects && + + xargs -n 1 git -C pc2 cat-file -t <objects >types && + sort -u types >unique_types.actual && + test_write_lines commit tree >unique_types.expected && + test_cmp unique_types.expected unique_types.actual +' + +test_expect_success 'upload-pack complains of bogus filter config' ' + printf 0000 | + test_must_fail git \ + -c uploadpackfilter.tree.maxdepth \ + upload-pack . >/dev/null 2>err && + test_grep "unable to parse.*tree.maxdepth" err +' + +test_expect_success 'upload-pack fails banned object filters' ' + test_config -C srv.bare uploadpackfilter.blob:none.allow false && + test_must_fail ok=sigpipe git clone --no-checkout --filter=blob:none \ + "file://$(pwd)/srv.bare" pc3 2>err && + test_grep "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://$(pwd)/srv.bare" pc3 2>err && + test_grep "filter '\''blob:none'\'' not supported" err +' + +test_expect_success 'upload-pack fails banned object filters with fallback' ' + test_config -C srv.bare uploadpackfilter.allow false && + test_must_fail ok=sigpipe git clone --no-checkout --filter=blob:none \ + "file://$(pwd)/srv.bare" pc3 2>err && + test_grep "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://$(pwd)/srv.bare" pc3 2>err && + test_grep "tree filter allows max depth 0, but got 1" err && + + git clone --no-checkout --filter=tree:0 "file://$(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_grep "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_grep "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_grep "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" "$TREE_HASH" && + git -C promisor-remote count-objects -v >object-count && + test_grep "count: 0" object-count && + test_grep "in-pack: 2" object-count && + + # Set it as the promisor remote of client. Thus, whenever + # the client lazy fetches, the lazy fetch will succeed only if it is + # for this tree or blob. + test_commit -C promisor-remote one && # so that ref advertisement is not empty + git -C promisor-remote config --local uploadpack.allowanysha1inwant 1 && + git -C client remote set-url origin "file://$(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_expect_success 'lazy-fetch in submodule succeeds' ' + # setup + test_config_global protocol.file.allow always && + + test_when_finished "rm -rf src-sub" && + git init src-sub && + git -C src-sub config uploadpack.allowfilter 1 && + git -C src-sub config uploadpack.allowanysha1inwant 1 && + + # This blob must be missing in the subsequent commit. + echo foo >src-sub/file && + git -C src-sub add file && + git -C src-sub commit -m "submodule one" && + SUB_ONE=$(git -C src-sub rev-parse HEAD) && + + echo bar >src-sub/file && + git -C src-sub add file && + git -C src-sub commit -m "submodule two" && + SUB_TWO=$(git -C src-sub rev-parse HEAD) && + + test_when_finished "rm -rf src-super" && + git init src-super && + git -C src-super config uploadpack.allowfilter 1 && + git -C src-super config uploadpack.allowanysha1inwant 1 && + git -C src-super submodule add ../src-sub src-sub && + + git -C src-super/src-sub checkout $SUB_ONE && + git -C src-super add src-sub && + git -C src-super commit -m "superproject one" && + + git -C src-super/src-sub checkout $SUB_TWO && + git -C src-super add src-sub && + git -C src-super commit -m "superproject two" && + + # the fetch + test_when_finished "rm -rf client" && + git clone --filter=blob:none --also-filter-submodules \ + --recurse-submodules "file://$(pwd)/src-super" client && + + # Trigger lazy-fetch from the superproject + git -C client restore --recurse-submodules --source=HEAD^ :/ +' + +. "$TEST_DIRECTORY"/lib-httpd.sh +start_httpd + +# Converts bytes into their hexadecimal representation. For example, +# "printf 'ab\r\n' | hex_unpack" results in '61620d0a'. +hex_unpack () { + perl -e '$/ = 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 $HTTPD_URL/one_time_perl/server repo 2>err && + + test_grep "did not send all necessary objects" err && + + # Ensure that the one-time-perl script was used. + ! test -e "$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 |