Adding upstream version 1:2.39.2.upstream/1%2.39.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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