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+#!/bin/sh
+
+test_description='git repack --geometric works correctly'
+
+. ./test-lib.sh
+
+GIT_TEST_MULTI_PACK_INDEX=0
+
+objdir=.git/objects
+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 --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 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 &&
+
+ find $objdir/pack -name "*.pack" >after &&
+ test_line_count = 1 after
+ )
+'
+
+test_done