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Diffstat (limited to 't/t7703-repack-geometric.sh')
| -rwxr-xr-x | t/t7703-repack-geometric.sh | 284 |
1 files changed, 284 insertions, 0 deletions
diff --git a/t/t7703-repack-geometric.sh b/t/t7703-repack-geometric.sh new file mode 100755 index 0000000..8821fbd --- /dev/null +++ b/t/t7703-repack-geometric.sh @@ -0,0 +1,284 @@ +#!/bin/sh + +test_description='git repack --geometric works correctly' + +. ./test-lib.sh + +GIT_TEST_MULTI_PACK_INDEX=0 + +objdir=.git/objects +packdir=$objdir/pack +midx=$objdir/pack/multi-pack-index + +test_expect_success '--geometric with no packs' ' + git init geometric && + test_when_finished "rm -fr geometric" && + ( + cd geometric && + + git repack --write-midx --geometric 2 >out && + test_i18ngrep "Nothing new to pack" out + ) +' + +test_expect_success '--geometric with one pack' ' + git init geometric && + test_when_finished "rm -fr geometric" && + ( + cd geometric && + + test_commit "base" && + git repack -d && + + git repack --geometric 2 >out && + + test_i18ngrep "Nothing new to pack" out + ) +' + +test_expect_success '--geometric with an intact progression' ' + git init geometric && + test_when_finished "rm -fr geometric" && + ( + cd geometric && + + # These packs already form a geometric progression. + test_commit_bulk --start=1 1 && # 3 objects + test_commit_bulk --start=2 2 && # 6 objects + test_commit_bulk --start=4 4 && # 12 objects + + find $objdir/pack -name "*.pack" | sort >expect && + git repack --geometric 2 -d && + find $objdir/pack -name "*.pack" | sort >actual && + + test_cmp expect actual + ) +' + +test_expect_success '--geometric with loose objects' ' + git init geometric && + test_when_finished "rm -fr geometric" && + ( + cd geometric && + + # These packs already form a geometric progression. + test_commit_bulk --start=1 1 && # 3 objects + test_commit_bulk --start=2 2 && # 6 objects + # The loose objects are packed together, breaking the + # progression. + test_commit loose && # 3 objects + + find $objdir/pack -name "*.pack" | sort >before && + git repack --geometric 2 -d && + find $objdir/pack -name "*.pack" | sort >after && + + comm -13 before after >new && + comm -23 before after >removed && + + test_line_count = 1 new && + test_must_be_empty removed && + + git repack --geometric 2 -d && + find $objdir/pack -name "*.pack" | sort >after && + + # The progression (3, 3, 6) is combined into one new pack. + test_line_count = 1 after + ) +' + +test_expect_success '--geometric with small-pack rollup' ' + git init geometric && + test_when_finished "rm -fr geometric" && + ( + cd geometric && + + test_commit_bulk --start=1 1 && # 3 objects + test_commit_bulk --start=2 1 && # 3 objects + find $objdir/pack -name "*.pack" | sort >small && + test_commit_bulk --start=3 4 && # 12 objects + test_commit_bulk --start=7 8 && # 24 objects + find $objdir/pack -name "*.pack" | sort >before && + + git repack --geometric 2 -d && + + # Three packs in total; two of the existing large ones, and one + # new one. + find $objdir/pack -name "*.pack" | sort >after && + test_line_count = 3 after && + comm -3 small before | tr -d "\t" >large && + grep -qFf large after + ) +' + +test_expect_success '--geometric with small- and large-pack rollup' ' + git init geometric && + test_when_finished "rm -fr geometric" && + ( + cd geometric && + + # size(small1) + size(small2) > size(medium) / 2 + test_commit_bulk --start=1 1 && # 3 objects + test_commit_bulk --start=2 1 && # 3 objects + test_commit_bulk --start=2 3 && # 7 objects + test_commit_bulk --start=6 9 && # 27 objects && + + find $objdir/pack -name "*.pack" | sort >before && + + git repack --geometric 2 -d && + + find $objdir/pack -name "*.pack" | sort >after && + comm -12 before after >untouched && + + # Two packs in total; the largest pack from before running "git + # repack", and one new one. + test_line_count = 1 untouched && + test_line_count = 2 after + ) +' + +test_expect_success '--geometric ignores kept packs' ' + git init geometric && + test_when_finished "rm -fr geometric" && + ( + cd geometric && + + test_commit kept && # 3 objects + test_commit pack && # 3 objects + + KEPT=$(git pack-objects --revs $objdir/pack/pack <<-EOF + refs/tags/kept + EOF + ) && + PACK=$(git pack-objects --revs $objdir/pack/pack <<-EOF + refs/tags/pack + ^refs/tags/kept + EOF + ) && + + # neither pack contains more than twice the number of objects in + # the other, so they should be combined. but, marking one as + # .kept on disk will "freeze" it, so the pack structure should + # remain unchanged. + touch $objdir/pack/pack-$KEPT.keep && + + find $objdir/pack -name "*.pack" | sort >before && + git repack --geometric 2 -d && + find $objdir/pack -name "*.pack" | sort >after && + + # both packs should still exist + test_path_is_file $objdir/pack/pack-$KEPT.pack && + test_path_is_file $objdir/pack/pack-$PACK.pack && + + # and no new packs should be created + test_cmp before after && + + # Passing --pack-kept-objects causes packs with a .keep file to + # be repacked, too. + git repack --geometric 2 -d --pack-kept-objects && + + # After repacking, two packs remain: one new one (containing the + # objects in both the .keep and non-kept pack), and the .keep + # pack (since `--pack-kept-objects -d` does not actually delete + # the kept pack). + find $objdir/pack -name "*.pack" >after && + test_line_count = 2 after + ) +' + +test_expect_success '--geometric ignores --keep-pack packs' ' + git init geometric && + test_when_finished "rm -fr geometric" && + ( + cd geometric && + + # Create two equal-sized packs + test_commit kept && # 3 objects + git repack -d && + test_commit pack && # 3 objects + git repack -d && + + find $objdir/pack -type f -name "*.pack" | sort >packs.before && + git repack --geometric 2 -dm \ + --keep-pack="$(basename "$(head -n 1 packs.before)")" >out && + find $objdir/pack -type f -name "*.pack" | sort >packs.after && + + # Packs should not have changed (only one non-kept pack, no + # loose objects), but $midx should now exist. + grep "Nothing new to pack" out && + test_path_is_file $midx && + + test_cmp packs.before packs.after && + + git fsck + ) +' + +test_expect_success '--geometric chooses largest MIDX preferred pack' ' + git init geometric && + test_when_finished "rm -fr geometric" && + ( + cd geometric && + + # These packs already form a geometric progression. + test_commit_bulk --start=1 1 && # 3 objects + test_commit_bulk --start=2 2 && # 6 objects + ls $objdir/pack/pack-*.idx >before && + test_commit_bulk --start=4 4 && # 12 objects + ls $objdir/pack/pack-*.idx >after && + + git repack --geometric 2 -dbm && + + comm -3 before after | xargs -n 1 basename >expect && + test-tool read-midx --preferred-pack $objdir >actual && + + test_cmp expect actual + ) +' + +test_expect_success '--geometric with pack.packSizeLimit' ' + git init pack-rewrite && + test_when_finished "rm -fr pack-rewrite" && + ( + cd pack-rewrite && + + test-tool genrandom foo 1048576 >foo && + test-tool genrandom bar 1048576 >bar && + + git add foo bar && + test_tick && + git commit -m base && + + git rev-parse HEAD:foo HEAD:bar >p1.objects && + git rev-parse HEAD HEAD^{tree} >p2.objects && + + # These two packs each contain two objects, so the following + # `--geometric` repack will try to combine them. + p1="$(git pack-objects $packdir/pack <p1.objects)" && + p2="$(git pack-objects $packdir/pack <p2.objects)" && + + # Remove any loose objects in packs, since we do not want extra + # copies around (which would mask over potential object + # corruption issues). + git prune-packed && + + # Both p1 and p2 will be rolled up, but pack-objects will write + # three packs: + # + # - one containing object "foo", + # - another containing object "bar", + # - a final pack containing the commit and tree objects + # (identical to p2 above) + git repack --geometric 2 -d --max-pack-size=1048576 && + + # Ensure `repack` can detect that the third pack it wrote + # (containing just the tree and commit objects) was identical to + # one that was below the geometric split, so that we can save it + # from deletion. + # + # If `repack` fails to do that, we will incorrectly delete p2, + # causing object corruption. + git fsck + ) +' + +test_done |