diff options
Diffstat (limited to 't/t1700-split-index.sh')
| -rwxr-xr-x | t/t1700-split-index.sh | 547 |
1 files changed, 547 insertions, 0 deletions
diff --git a/t/t1700-split-index.sh b/t/t1700-split-index.sh new file mode 100755 index 0000000..b4ab166 --- /dev/null +++ b/t/t1700-split-index.sh @@ -0,0 +1,547 @@ +#!/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 |