diff options
Diffstat (limited to 't/lib-bitmap.sh')
| -rw-r--r-- | t/lib-bitmap.sh | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/t/lib-bitmap.sh b/t/lib-bitmap.sh index 21d0392dda..a95537e759 100644 --- a/t/lib-bitmap.sh +++ b/t/lib-bitmap.sh @@ -1,6 +1,9 @@ # Helpers for scripts testing bitmap functionality; see t5310 for # example usage. +objdir=.git/objects +midx=$objdir/pack/multi-pack-index + # Compare a file containing rev-list bitmap traversal output to its non-bitmap # counterpart. You can't just use test_cmp for this, because the two produce # subtly different output: @@ -264,3 +267,185 @@ have_delta () { midx_checksum () { test-tool read-midx --checksum "$1" } + +# midx_pack_source <obj> +midx_pack_source () { + test-tool read-midx --show-objects .git/objects | grep "^$1 " | cut -f2 +} + +test_rev_exists () { + commit="$1" + kind="$2" + + test_expect_success "reverse index exists ($kind)" ' + GIT_TRACE2_EVENT=$(pwd)/event.trace \ + git rev-list --test-bitmap "$commit" && + + if test "rev" = "$kind" + then + test_path_is_file $midx-$(midx_checksum $objdir).rev + fi && + grep "\"category\":\"load_midx_revindex\",\"key\":\"source\",\"value\":\"$kind\"" event.trace + ' +} + +midx_bitmap_core () { + rev_kind="${1:-midx}" + + setup_bitmap_history + + test_expect_success 'create single-pack midx with bitmaps' ' + git repack -ad && + git multi-pack-index write --bitmap && + test_path_is_file $midx && + test_path_is_file $midx-$(midx_checksum $objdir).bitmap + ' + + test_rev_exists HEAD "$rev_kind" + + basic_bitmap_tests + + test_expect_success 'create new additional packs' ' + for i in $(test_seq 1 16) + do + test_commit "$i" && + git repack -d || return 1 + done && + + git checkout -b other2 HEAD~8 && + for i in $(test_seq 1 8) + do + test_commit "side-$i" && + git repack -d || return 1 + done && + git checkout second + ' + + test_expect_success 'create multi-pack midx with bitmaps' ' + git multi-pack-index write --bitmap && + + ls $objdir/pack/pack-*.pack >packs && + test_line_count = 25 packs && + + test_path_is_file $midx && + test_path_is_file $midx-$(midx_checksum $objdir).bitmap + ' + + test_rev_exists HEAD "$rev_kind" + + basic_bitmap_tests + + test_expect_success '--no-bitmap is respected when bitmaps exist' ' + git multi-pack-index write --bitmap && + + test_commit respect--no-bitmap && + git repack -d && + + test_path_is_file $midx && + test_path_is_file $midx-$(midx_checksum $objdir).bitmap && + + git multi-pack-index write --no-bitmap && + + test_path_is_file $midx && + test_path_is_missing $midx-$(midx_checksum $objdir).bitmap && + test_path_is_missing $midx-$(midx_checksum $objdir).rev + ' + + test_expect_success 'setup midx with base from later pack' ' + # Write a and b so that "a" is a delta on top of base "b", since Git + # prefers to delete contents out of a base rather than add to a shorter + # object. + test_seq 1 128 >a && + test_seq 1 130 >b && + + git add a b && + git commit -m "initial commit" && + + a=$(git rev-parse HEAD:a) && + b=$(git rev-parse HEAD:b) && + + # In the first pack, "a" is stored as a delta to "b". + p1=$(git pack-objects .git/objects/pack/pack <<-EOF + $a + $b + EOF + ) && + + # In the second pack, "a" is missing, and "b" is not a delta nor base to + # any other object. + p2=$(git pack-objects .git/objects/pack/pack <<-EOF + $b + $(git rev-parse HEAD) + $(git rev-parse HEAD^{tree}) + EOF + ) && + + git prune-packed && + # Use the second pack as the preferred source, so that "b" occurs + # earlier in the MIDX object order, rendering "a" unusable for pack + # reuse. + git multi-pack-index write --bitmap --preferred-pack=pack-$p2.idx && + + have_delta $a $b && + test $(midx_pack_source $a) != $(midx_pack_source $b) + ' + + rev_list_tests 'full bitmap with backwards delta' + + test_expect_success 'clone with bitmaps enabled' ' + git clone --no-local --bare . clone-reverse-delta.git && + test_when_finished "rm -fr clone-reverse-delta.git" && + + git rev-parse HEAD >expect && + git --git-dir=clone-reverse-delta.git rev-parse HEAD >actual && + test_cmp expect actual + ' + + test_expect_success 'changing the preferred pack does not corrupt bitmaps' ' + rm -fr repo && + git init repo && + test_when_finished "rm -fr repo" && + ( + cd repo && + + test_commit A && + test_commit B && + + git rev-list --objects --no-object-names HEAD^ >A.objects && + git rev-list --objects --no-object-names HEAD^.. >B.objects && + + A=$(git pack-objects $objdir/pack/pack <A.objects) && + B=$(git pack-objects $objdir/pack/pack <B.objects) && + + cat >indexes <<-EOF && + pack-$A.idx + pack-$B.idx + EOF + + git multi-pack-index write --bitmap --stdin-packs \ + --preferred-pack=pack-$A.pack <indexes && + git rev-list --test-bitmap A && + + git multi-pack-index write --bitmap --stdin-packs \ + --preferred-pack=pack-$B.pack <indexes && + git rev-list --test-bitmap A + ) + ' +} + +midx_bitmap_partial_tests () { + rev_kind="${1:-midx}" + + test_expect_success 'setup partial bitmaps' ' + test_commit packed && + git repack && + test_commit loose && + git multi-pack-index write --bitmap 2>err && + test_path_is_file $midx && + test_path_is_file $midx-$(midx_checksum $objdir).bitmap + ' + + test_rev_exists HEAD~ "$rev_kind" + + basic_bitmap_tests HEAD~ +} |