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Diffstat (limited to 't/t5323-pack-redundant.sh')
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diff --git a/t/t5323-pack-redundant.sh b/t/t5323-pack-redundant.sh new file mode 100755 index 0000000..6b4d1ca --- /dev/null +++ b/t/t5323-pack-redundant.sh @@ -0,0 +1,467 @@ +#!/bin/sh +# +# Copyright (c) 2018 Jiang Xin +# + +test_description='Test git pack-redundant + +In order to test git-pack-redundant, we will create a number of objects and +packs in the repository `master.git`. The relationship between packs (P1-P8) +and objects (T, A-R) is showed in the following chart. Objects of a pack will +be marked with letter x, while objects of redundant packs will be marked with +exclamation point, and redundant pack itself will be marked with asterisk. + + | T A B C D E F G H I J K L M N O P Q R + ----+-------------------------------------- + P1 | x x x x x x x x + P2* | ! ! ! ! ! ! ! + P3 | x x x x x x + P4* | ! ! ! ! ! + P5 | x x x x + P6* | ! ! ! + P7 | x x + P8* | ! + ----+-------------------------------------- + ALL | x x x x x x x x x x x x x x x x x x x + +Another repository `shared.git` has unique objects (X-Z), while other objects +(marked with letter s) are shared through alt-odb (of `master.git`). The +relationship between packs and objects is as follows: + + | T A B C D E F G H I J K L M N O P Q R X Y Z + ----+---------------------------------------------- + Px1 | s s s x x x + Px2 | s s s x x x +' + +. ./test-lib.sh + +master_repo=master.git +shared_repo=shared.git + +# Create commits in <repo> and assign each commit's oid to shell variables +# given in the arguments (A, B, and C). E.g.: +# +# create_commits_in <repo> A B C +# +# NOTE: Avoid calling this function from a subshell since variable +# assignments will disappear when subshell exits. +create_commits_in () { + repo="$1" && + if ! parent=$(git -C "$repo" rev-parse HEAD^{} 2>/dev/null) + then + parent= + fi && + T=$(git -C "$repo" write-tree) && + shift && + while test $# -gt 0 + do + name=$1 && + test_tick && + if test -z "$parent" + then + oid=$(echo $name | git -C "$repo" commit-tree $T) + else + oid=$(echo $name | git -C "$repo" commit-tree -p $parent $T) + fi && + eval $name=$oid && + parent=$oid && + shift || + return 1 + done && + git -C "$repo" update-ref refs/heads/master $oid +} + +# Create pack in <repo> and assign pack id to variable given in the 2nd argument +# (<name>). Commits in the pack will be read from stdin. E.g.: +# +# create_pack_in <repo> <name> <<-EOF +# ... +# EOF +# +# NOTE: commits from stdin should be given using heredoc, not using pipe, and +# avoid calling this function from a subshell since variable assignments will +# disappear when subshell exits. +create_pack_in () { + repo="$1" && + name="$2" && + pack=$(git -C "$repo/objects/pack" pack-objects -q pack) && + eval $name=$pack && + eval P$pack=$name:$pack +} + +format_packfiles () { + sed \ + -e "s#.*/pack-\(.*\)\.idx#\1#" \ + -e "s#.*/pack-\(.*\)\.pack#\1#" | + sort -u | + while read p + do + if test -z "$(eval echo \${P$p})" + then + echo $p + else + eval echo "\${P$p}" + fi + done | + sort +} + +test_expect_success 'setup master repo' ' + git init --bare "$master_repo" && + create_commits_in "$master_repo" A B C D E F G H I J K L M N O P Q R +' + +############################################################################# +# Chart of packs and objects for this test case +# +# | T A B C D E F G H I J K L M N O P Q R +# ----+-------------------------------------- +# P1 | x x x x x x x x +# P2 | x x x x x x x +# P3 | x x x x x x +# ----+-------------------------------------- +# ALL | x x x x x x x x x x x x x x x +# +############################################################################# +test_expect_success 'master: no redundant for pack 1, 2, 3' ' + create_pack_in "$master_repo" P1 <<-EOF && + $T + $A + $B + $C + $D + $E + $F + $R + EOF + create_pack_in "$master_repo" P2 <<-EOF && + $B + $C + $D + $E + $G + $H + $I + EOF + create_pack_in "$master_repo" P3 <<-EOF && + $F + $I + $J + $K + $L + $M + EOF + ( + cd "$master_repo" && + git pack-redundant --all >out && + test_must_be_empty out + ) +' + +############################################################################# +# Chart of packs and objects for this test case +# +# | T A B C D E F G H I J K L M N O P Q R +# ----+-------------------------------------- +# P1 | x x x x x x x x +# P2 | x x x x x x x +# P3* | ! ! ! ! ! ! +# P4 | x x x x x +# P5 | x x x x +# ----+-------------------------------------- +# ALL | x x x x x x x x x x x x x x x x x x +# +############################################################################# +test_expect_success 'master: one of pack-2/pack-3 is redundant' ' + create_pack_in "$master_repo" P4 <<-EOF && + $J + $K + $L + $M + $P + EOF + create_pack_in "$master_repo" P5 <<-EOF && + $G + $H + $N + $O + EOF + ( + cd "$master_repo" && + cat >expect <<-EOF && + P3:$P3 + EOF + git pack-redundant --all >out && + format_packfiles <out >actual && + test_cmp expect actual + ) +' + +############################################################################# +# Chart of packs and objects for this test case +# +# | T A B C D E F G H I J K L M N O P Q R +# ----+-------------------------------------- +# P1 | x x x x x x x x +# P2* | ! ! ! ! ! ! ! +# P3 | x x x x x x +# P4* | ! ! ! ! ! +# P5 | x x x x +# P6* | ! ! ! +# P7 | x x +# ----+-------------------------------------- +# ALL | x x x x x x x x x x x x x x x x x x x +# +############################################################################# +test_expect_success 'master: pack 2, 4, and 6 are redundant' ' + create_pack_in "$master_repo" P6 <<-EOF && + $N + $O + $Q + EOF + create_pack_in "$master_repo" P7 <<-EOF && + $P + $Q + EOF + ( + cd "$master_repo" && + cat >expect <<-EOF && + P2:$P2 + P4:$P4 + P6:$P6 + EOF + git pack-redundant --all >out && + format_packfiles <out >actual && + test_cmp expect actual + ) +' + +############################################################################# +# Chart of packs and objects for this test case +# +# | T A B C D E F G H I J K L M N O P Q R +# ----+-------------------------------------- +# P1 | x x x x x x x x +# P2* | ! ! ! ! ! ! ! +# P3 | x x x x x x +# P4* | ! ! ! ! ! +# P5 | x x x x +# P6* | ! ! ! +# P7 | x x +# P8* | ! +# ----+-------------------------------------- +# ALL | x x x x x x x x x x x x x x x x x x x +# +############################################################################# +test_expect_success 'master: pack-8 (subset of pack-1) is also redundant' ' + create_pack_in "$master_repo" P8 <<-EOF && + $A + EOF + ( + cd "$master_repo" && + cat >expect <<-EOF && + P2:$P2 + P4:$P4 + P6:$P6 + P8:$P8 + EOF + git pack-redundant --all >out && + format_packfiles <out >actual && + test_cmp expect actual + ) +' + +test_expect_success 'master: clean loose objects' ' + ( + cd "$master_repo" && + git prune-packed && + find objects -type f | sed -e "/objects\/pack\//d" >out && + test_must_be_empty out + ) +' + +test_expect_success 'master: remove redundant packs and pass fsck' ' + ( + cd "$master_repo" && + git pack-redundant --all | xargs rm && + git fsck && + git pack-redundant --all >out && + test_must_be_empty out + ) +' + +# The following test cases will execute inside `shared.git`, instead of +# inside `master.git`. +test_expect_success 'setup shared.git' ' + git clone --mirror "$master_repo" "$shared_repo" && + ( + cd "$shared_repo" && + printf "../../$master_repo/objects\n" >objects/info/alternates + ) +' + +test_expect_success 'shared: all packs are redundant, but no output without --alt-odb' ' + ( + cd "$shared_repo" && + git pack-redundant --all >out && + test_must_be_empty out + ) +' + +############################################################################# +# Chart of packs and objects for this test case +# +# ================ master.git =============== +# | T A B C D E F G H I J K L M N O P Q R <----------+ +# ----+-------------------------------------- | +# P1 | x x x x x x x x | +# P3 | x x x x x x | +# P5 | x x x x | +# P7 | x x | +# ----+-------------------------------------- | +# ALL | x x x x x x x x x x x x x x x x x x x | +# | +# | +# ================ shared.git =============== | +# | T A B C D E F G H I J K L M N O P Q R <objects/info/alternates> +# ----+-------------------------------------- +# P1* | s s s s s s s s +# P3* | s s s s s s +# P5* | s s s s +# P7* | s s +# ----+-------------------------------------- +# ALL | x x x x x x x x x x x x x x x x x x x +# +############################################################################# +test_expect_success 'shared: show redundant packs in stderr for verbose mode' ' + ( + cd "$shared_repo" && + cat >expect <<-EOF && + P1:$P1 + P3:$P3 + P5:$P5 + P7:$P7 + EOF + git pack-redundant --all --verbose >out 2>out.err && + test_must_be_empty out && + grep "pack$" out.err | format_packfiles >actual && + test_cmp expect actual + ) +' + +test_expect_success 'shared: remove redundant packs, no packs left' ' + ( + cd "$shared_repo" && + cat >expect <<-EOF && + fatal: Zero packs found! + EOF + git pack-redundant --all --alt-odb | xargs rm && + git fsck && + test_must_fail git pack-redundant --all --alt-odb >actual 2>&1 && + test_cmp expect actual + ) +' + +test_expect_success 'shared: create new objects and packs' ' + create_commits_in "$shared_repo" X Y Z && + create_pack_in "$shared_repo" Px1 <<-EOF && + $X + $Y + $Z + $A + $B + $C + EOF + create_pack_in "$shared_repo" Px2 <<-EOF + $X + $Y + $Z + $D + $E + $F + EOF +' + +test_expect_success 'shared: no redundant without --alt-odb' ' + ( + cd "$shared_repo" && + git pack-redundant --all >out && + test_must_be_empty out + ) +' + +############################################################################# +# Chart of packs and objects for this test case +# +# ================ master.git =============== +# | T A B C D E F G H I J K L M N O P Q R <----------------+ +# ----+-------------------------------------- | +# P1 | x x x x x x x x | +# P3 | x x x x x x | +# P5 | x x x x | +# P7 | x x | +# ----+-------------------------------------- | +# ALL | x x x x x x x x x x x x x x x x x x x | +# | +# | +# ================ shared.git ======================= | +# | T A B C D E F G H I J K L M N O P Q R X Y Z <objects/info/alternates> +# ----+---------------------------------------------- +# Px1 | s s s x x x +# Px2*| s s s ! ! ! +# ----+---------------------------------------------- +# ALL | s s s s s s s s s s s s s s s s s s s x x x +# +############################################################################# +test_expect_success 'shared: one pack is redundant with --alt-odb' ' + ( + cd "$shared_repo" && + git pack-redundant --all --alt-odb >out && + format_packfiles <out >actual && + test_line_count = 1 actual + ) +' + +############################################################################# +# Chart of packs and objects for this test case +# +# ================ master.git =============== +# | T A B C D E F G H I J K L M N O P Q R <----------------+ +# ----+-------------------------------------- | +# P1 | x x x x x x x x | +# P3 | x x x x x x | +# P5 | x x x x | +# P7 | x x | +# ----+-------------------------------------- | +# ALL | x x x x x x x x x x x x x x x x x x x | +# | +# | +# ================ shared.git ======================= | +# | T A B C D E F G H I J K L M N O P Q R X Y Z <objects/info/alternates> +# ----+---------------------------------------------- +# Px1*| s s s i i i +# Px2*| s s s i i i +# ----+---------------------------------------------- +# ALL | s s s s s s s s s s s s s s s s s s s i i i +# (ignored objects, marked with i) +# +############################################################################# +test_expect_success 'shared: ignore unique objects and all two packs are redundant' ' + ( + cd "$shared_repo" && + cat >expect <<-EOF && + Px1:$Px1 + Px2:$Px2 + EOF + git pack-redundant --all --alt-odb >out <<-EOF && + $X + $Y + $Z + EOF + format_packfiles <out >actual && + test_cmp expect actual + ) +' + +test_done |