#!/bin/sh test_description='split index mode tests' GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME . ./test-lib.sh # We need total control of index splitting here sane_unset GIT_TEST_SPLIT_INDEX # Testing a hard coded SHA against an index with an extension # that can vary from run to run is problematic so we disable # those extensions. sane_unset GIT_TEST_FSMONITOR sane_unset GIT_TEST_INDEX_THREADS # Create a file named as $1 with content read from stdin. # Set the file's mtime to a few seconds in the past to avoid racy situations. create_non_racy_file () { cat >"$1" && test-tool chmtime =-5 "$1" } test_expect_success 'setup' ' test_oid_cache <<-EOF own_v3 sha1:8299b0bcd1ac364e5f1d7768efb62fa2da79a339 own_v3 sha256:38a6d2925e3eceec33ad7b34cbff4e0086caa0daf28f31e51f5bd94b4a7af86b base_v3 sha1:39d890139ee5356c7ef572216cebcd27aa41f9df base_v3 sha256:c9baeadf905112bf6c17aefbd7d02267afd70ded613c30cafed2d40cb506e1ed own_v4 sha1:432ef4b63f32193984f339431fd50ca796493569 own_v4 sha256:6738ac6319c25b694afa7bcc313deb182d1a59b68bf7a47b4296de83478c0420 base_v4 sha1:508851a7f0dfa8691e9f69c7f055865389012491 base_v4 sha256:3177d4adfdd4b6904f7e921d91d715a471c0dde7cf6a4bba574927f02b699508 EOF ' test_expect_success 'enable split index' ' git config splitIndex.maxPercentChange 100 && git update-index --split-index && test-tool dump-split-index .git/index >actual && indexversion=$(test-tool index-version <.git/index) && # NEEDSWORK: Stop hard-coding checksums. if test "$indexversion" = "4" then own=$(test_oid own_v4) base=$(test_oid base_v4) else own=$(test_oid own_v3) base=$(test_oid base_v3) fi && cat >expect <<-EOF && own $own base $base replacements: deletions: EOF test_cmp expect actual ' test_expect_success 'add one file' ' create_non_racy_file one && git update-index --add one && git ls-files --stage >ls-files.actual && cat >ls-files.expect <<-EOF && 100644 $EMPTY_BLOB 0 one EOF test_cmp ls-files.expect ls-files.actual && test-tool dump-split-index .git/index | sed "/^own/d" >actual && cat >expect <<-EOF && base $base 100644 $EMPTY_BLOB 0 one replacements: deletions: EOF test_cmp expect actual ' test_expect_success 'disable split index' ' git update-index --no-split-index && git ls-files --stage >ls-files.actual && cat >ls-files.expect <<-EOF && 100644 $EMPTY_BLOB 0 one EOF test_cmp ls-files.expect ls-files.actual && BASE=$(test-tool dump-split-index .git/index | sed -n "s/^own/base/p") && test-tool dump-split-index .git/index | sed "/^own/d" >actual && cat >expect <<-EOF && not a split index EOF test_cmp expect actual ' test_expect_success 'enable split index again, "one" now belongs to base index"' ' git update-index --split-index && git ls-files --stage >ls-files.actual && cat >ls-files.expect <<-EOF && 100644 $EMPTY_BLOB 0 one EOF test_cmp ls-files.expect ls-files.actual && test-tool dump-split-index .git/index | sed "/^own/d" >actual && cat >expect <<-EOF && $BASE replacements: deletions: EOF test_cmp expect actual ' test_expect_success 'modify original file, base index untouched' ' echo modified | create_non_racy_file one && file1_blob=$(git hash-object one) && git update-index one && git ls-files --stage >ls-files.actual && cat >ls-files.expect <<-EOF && 100644 $file1_blob 0 one EOF test_cmp ls-files.expect ls-files.actual && test-tool dump-split-index .git/index | sed "/^own/d" >actual && q_to_tab >expect <<-EOF && $BASE 100644 $file1_blob 0Q replacements: 0 deletions: EOF test_cmp expect actual ' test_expect_success 'add another file, which stays index' ' create_non_racy_file two && git update-index --add two && git ls-files --stage >ls-files.actual && cat >ls-files.expect <<-EOF && 100644 $file1_blob 0 one 100644 $EMPTY_BLOB 0 two EOF test_cmp ls-files.expect ls-files.actual && test-tool dump-split-index .git/index | sed "/^own/d" >actual && q_to_tab >expect <<-EOF && $BASE 100644 $file1_blob 0Q 100644 $EMPTY_BLOB 0 two replacements: 0 deletions: EOF test_cmp expect actual ' test_expect_success 'remove file not in base index' ' git update-index --force-remove two && git ls-files --stage >ls-files.actual && cat >ls-files.expect <<-EOF && 100644 $file1_blob 0 one EOF test_cmp ls-files.expect ls-files.actual && test-tool dump-split-index .git/index | sed "/^own/d" >actual && q_to_tab >expect <<-EOF && $BASE 100644 $file1_blob 0Q replacements: 0 deletions: EOF test_cmp expect actual ' test_expect_success 'remove file in base index' ' git update-index --force-remove one && git ls-files --stage >ls-files.actual && test_must_be_empty ls-files.actual && test-tool dump-split-index .git/index | sed "/^own/d" >actual && cat >expect <<-EOF && $BASE replacements: deletions: 0 EOF test_cmp expect actual ' test_expect_success 'add original file back' ' create_non_racy_file one && git update-index --add one && git ls-files --stage >ls-files.actual && cat >ls-files.expect <<-EOF && 100644 $EMPTY_BLOB 0 one EOF test_cmp ls-files.expect ls-files.actual && test-tool dump-split-index .git/index | sed "/^own/d" >actual && cat >expect <<-EOF && $BASE 100644 $EMPTY_BLOB 0 one replacements: deletions: 0 EOF test_cmp expect actual ' test_expect_success 'add new file' ' create_non_racy_file two && git update-index --add two && git ls-files --stage >actual && cat >expect <<-EOF && 100644 $EMPTY_BLOB 0 one 100644 $EMPTY_BLOB 0 two EOF test_cmp expect actual ' test_expect_success 'unify index, two files remain' ' git update-index --no-split-index && git ls-files --stage >ls-files.actual && cat >ls-files.expect <<-EOF && 100644 $EMPTY_BLOB 0 one 100644 $EMPTY_BLOB 0 two EOF test_cmp ls-files.expect ls-files.actual && test-tool dump-split-index .git/index | sed "/^own/d" >actual && cat >expect <<-EOF && not a split index EOF test_cmp expect actual ' test_expect_success 'rev-parse --shared-index-path' ' test_create_repo split-index && ( cd split-index && git update-index --split-index && echo .git/sharedindex* >expect && git rev-parse --shared-index-path >actual && test_cmp expect actual && mkdir subdirectory && cd subdirectory && echo ../.git/sharedindex* >expect && git rev-parse --shared-index-path >actual && test_cmp expect actual ) ' test_expect_success 'set core.splitIndex config variable to true' ' git config core.splitIndex true && create_non_racy_file three && git update-index --add three && git ls-files --stage >ls-files.actual && cat >ls-files.expect <<-EOF && 100644 $EMPTY_BLOB 0 one 100644 $EMPTY_BLOB 0 three 100644 $EMPTY_BLOB 0 two EOF test_cmp ls-files.expect ls-files.actual && BASE=$(test-tool dump-split-index .git/index | grep "^base") && test-tool dump-split-index .git/index | sed "/^own/d" >actual && cat >expect <<-EOF && $BASE replacements: deletions: EOF test_cmp expect actual ' test_expect_success 'set core.splitIndex config variable to false' ' git config core.splitIndex false && git update-index --force-remove three && git ls-files --stage >ls-files.actual && cat >ls-files.expect <<-EOF && 100644 $EMPTY_BLOB 0 one 100644 $EMPTY_BLOB 0 two EOF test_cmp ls-files.expect ls-files.actual && test-tool dump-split-index .git/index | sed "/^own/d" >actual && cat >expect <<-EOF && not a split index EOF test_cmp expect actual ' test_expect_success 'set core.splitIndex config variable back to true' ' git config core.splitIndex true && create_non_racy_file three && git update-index --add three && BASE=$(test-tool dump-split-index .git/index | grep "^base") && test-tool dump-split-index .git/index | sed "/^own/d" >actual && cat >expect <<-EOF && $BASE replacements: deletions: EOF test_cmp expect actual && create_non_racy_file four && git update-index --add four && test-tool dump-split-index .git/index | sed "/^own/d" >actual && cat >expect <<-EOF && $BASE 100644 $EMPTY_BLOB 0 four replacements: deletions: EOF test_cmp expect actual ' test_expect_success 'check behavior with splitIndex.maxPercentChange unset' ' git config --unset splitIndex.maxPercentChange && create_non_racy_file five && git update-index --add five && BASE=$(test-tool dump-split-index .git/index | grep "^base") && test-tool dump-split-index .git/index | sed "/^own/d" >actual && cat >expect <<-EOF && $BASE replacements: deletions: EOF test_cmp expect actual && create_non_racy_file six && git update-index --add six && test-tool dump-split-index .git/index | sed "/^own/d" >actual && cat >expect <<-EOF && $BASE 100644 $EMPTY_BLOB 0 six replacements: deletions: EOF test_cmp expect actual ' test_expect_success 'check splitIndex.maxPercentChange set to 0' ' git config splitIndex.maxPercentChange 0 && create_non_racy_file seven && git update-index --add seven && BASE=$(test-tool dump-split-index .git/index | grep "^base") && test-tool dump-split-index .git/index | sed "/^own/d" >actual && cat >expect <<-EOF && $BASE replacements: deletions: EOF test_cmp expect actual && create_non_racy_file eight && git update-index --add eight && BASE=$(test-tool dump-split-index .git/index | grep "^base") && test-tool dump-split-index .git/index | sed "/^own/d" >actual && cat >expect <<-EOF && $BASE replacements: deletions: EOF test_cmp expect actual ' test_expect_success 'shared index files expire after 2 weeks by default' ' create_non_racy_file ten && git update-index --add ten && test $(ls .git/sharedindex.* | wc -l) -gt 2 && just_under_2_weeks_ago=$((5-14*86400)) && test-tool chmtime =$just_under_2_weeks_ago .git/sharedindex.* && create_non_racy_file eleven && git update-index --add eleven && test $(ls .git/sharedindex.* | wc -l) -gt 2 && just_over_2_weeks_ago=$((-1-14*86400)) && test-tool chmtime =$just_over_2_weeks_ago .git/sharedindex.* && create_non_racy_file twelve && git update-index --add twelve && test $(ls .git/sharedindex.* | wc -l) -le 2 ' test_expect_success 'check splitIndex.sharedIndexExpire set to 16 days' ' git config splitIndex.sharedIndexExpire "16.days.ago" && test-tool chmtime =$just_over_2_weeks_ago .git/sharedindex.* && create_non_racy_file thirteen && git update-index --add thirteen && test $(ls .git/sharedindex.* | wc -l) -gt 2 && just_over_16_days_ago=$((-1-16*86400)) && test-tool chmtime =$just_over_16_days_ago .git/sharedindex.* && create_non_racy_file fourteen && git update-index --add fourteen && test $(ls .git/sharedindex.* | wc -l) -le 2 ' test_expect_success 'check splitIndex.sharedIndexExpire set to "never" and "now"' ' git config splitIndex.sharedIndexExpire never && just_10_years_ago=$((-365*10*86400)) && test-tool chmtime =$just_10_years_ago .git/sharedindex.* && create_non_racy_file fifteen && git update-index --add fifteen && test $(ls .git/sharedindex.* | wc -l) -gt 2 && git config splitIndex.sharedIndexExpire now && just_1_second_ago=-1 && test-tool chmtime =$just_1_second_ago .git/sharedindex.* && create_non_racy_file sixteen && git update-index --add sixteen && test $(ls .git/sharedindex.* | wc -l) -le 2 ' test_expect_success POSIXPERM 'same mode for index & split index' ' git init same-mode && ( cd same-mode && test_commit A && test_modebits .git/index >index_mode && test_must_fail git config core.sharedRepository && git -c core.splitIndex=true status && shared=$(ls .git/sharedindex.*) && case "$shared" in *" "*) # we have more than one??? false ;; *) test_modebits "$shared" >split_index_mode && test_cmp index_mode split_index_mode ;; esac ) ' while read -r mode modebits do test_expect_success POSIXPERM "split index respects core.sharedrepository $mode" ' # Remove existing shared index files git config core.splitIndex false && git update-index --force-remove one && rm -f .git/sharedindex.* && # Create one new shared index file git config core.sharedrepository "$mode" && git config core.splitIndex true && create_non_racy_file one && git update-index --add one && echo "$modebits" >expect && test_modebits .git/index >actual && test_cmp expect actual && shared=$(ls .git/sharedindex.*) && case "$shared" in *" "*) # we have more than one??? false ;; *) test_modebits "$shared" >actual && test_cmp expect actual ;; esac ' done <<\EOF 0666 -rw-rw-rw- 0642 -rw-r---w- EOF test_expect_success POSIXPERM,SANITY 'graceful handling when splitting index is not allowed' ' test_create_repo ro && ( cd ro && test_commit initial && git update-index --split-index && test -f .git/sharedindex.* ) && cp ro/.git/index new-index && test_when_finished "chmod u+w ro/.git" && chmod u-w ro/.git && GIT_INDEX_FILE="$(pwd)/new-index" git -C ro update-index --split-index && chmod u+w ro/.git && rm ro/.git/sharedindex.* && GIT_INDEX_FILE=new-index git ls-files >actual && echo initial.t >expected && test_cmp expected actual ' test_expect_success 'writing split index with null sha1 does not write cache tree' ' git config core.splitIndex true && git config splitIndex.maxPercentChange 0 && git commit -m "commit" && { git ls-tree HEAD && printf "160000 commit $ZERO_OID\\tbroken\\n" } >broken-tree && echo "add broken entry" >msg && tree=$(git mktree <broken-tree) && test_tick && commit=$(git commit-tree $tree -p HEAD <msg) && git update-ref HEAD "$commit" && GIT_ALLOW_NULL_SHA1=1 git reset --hard && test_might_fail test-tool dump-cache-tree >cache-tree.out && test_line_count = 0 cache-tree.out ' test_expect_success 'do not refresh null base index' ' test_create_repo merge && ( cd merge && test_commit initial && git checkout -b side-branch && test_commit extra && git checkout main && git update-index --split-index && test_commit more && # must not write a new shareindex, or we wont catch the problem git -c splitIndex.maxPercentChange=100 merge --no-edit side-branch 2>err && # i.e. do not expect warnings like # could not freshen shared index .../shareindex.00000... test_must_be_empty err ) ' test_expect_success 'reading split index at alternate location' ' git init reading-alternate-location && ( cd reading-alternate-location && >file-in-alternate && git update-index --split-index --add file-in-alternate ) && echo file-in-alternate >expect && # Should be able to find the shared index both right next to # the specified split index file ... GIT_INDEX_FILE=./reading-alternate-location/.git/index \ git ls-files --cached >actual && test_cmp expect actual && # ... and, for backwards compatibility, in the current GIT_DIR # as well. mv -v ./reading-alternate-location/.git/sharedindex.* .git && GIT_INDEX_FILE=./reading-alternate-location/.git/index \ git ls-files --cached >actual && test_cmp expect actual ' test_expect_success 'GIT_TEST_SPLIT_INDEX works' ' git init git-test-split-index && ( cd git-test-split-index && >file && GIT_TEST_SPLIT_INDEX=1 git update-index --add file && ls -l .git/sharedindex.* >actual && test_line_count = 1 actual ) ' test_done