t5323: test cases for git-pack-redundant
Add test cases for git pack-redundant to validate new algorithm for git pack-redundant. Signed-off-by: Jiang Xin <zhiyou.jx@alibaba-inc.com> Reviewed-by: SZEDER Gábor <szeder.dev@gmail.com> Helped-by: Eric Sunshine <sunshine@sunshineco.com> Reviewed-by: Sun Chao <sunchao9@huawei.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jiang Xin
Junio C Hamano
parent
ecbdaf0899
commit
3173a94d57
467
t/t5323-pack-redundant.sh
Executable file
467
t/t5323-pack-redundant.sh
Executable file
@ -0,0 +1,467 @@
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#!/bin/sh
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#
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# Copyright (c) 2018 Jiang Xin
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#
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test_description='Test git pack-redundant
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In order to test git-pack-redundant, we will create a number of objects and
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packs in the repository `master.git`. The relationship between packs (P1-P8)
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and objects (T, A-R) is showed in the following chart. Objects of a pack will
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be marked with letter x, while objects of redundant packs will be marked with
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exclamation point, and redundant pack itself will be marked with asterisk.
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| T A B C D E F G H I J K L M N O P Q R
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----+--------------------------------------
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P1 | x x x x x x x x
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P2* | ! ! ! ! ! ! !
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P3 | x x x x x x
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P4* | ! ! ! ! !
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P5 | x x x x
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P6* | ! ! !
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P7 | x x
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P8* | !
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----+--------------------------------------
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ALL | x x x x x x x x x x x x x x x x x x x
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Another repository `shared.git` has unique objects (X-Z), while other objects
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(marked with letter s) are shared through alt-odb (of `master.git`). The
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relationship between packs and objects is as follows:
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| T A B C D E F G H I J K L M N O P Q R X Y Z
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----+----------------------------------------------
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Px1 | s s s x x x
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Px2 | s s s x x x
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'
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. ./test-lib.sh
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master_repo=master.git
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shared_repo=shared.git
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# Create commits in <repo> and assign each commit's oid to shell variables
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# given in the arguments (A, B, and C). E.g.:
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#
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# create_commits_in <repo> A B C
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#
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# NOTE: Avoid calling this function from a subshell since variable
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# assignments will disappear when subshell exits.
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create_commits_in () {
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repo="$1" &&
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if ! parent=$(git -C "$repo" rev-parse HEAD^{} 2>/dev/null)
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then
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parent=
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fi &&
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T=$(git -C "$repo" write-tree) &&
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shift &&
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while test $# -gt 0
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do
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name=$1 &&
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test_tick &&
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if test -z "$parent"
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then
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oid=$(echo $name | git -C "$repo" commit-tree $T)
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else
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oid=$(echo $name | git -C "$repo" commit-tree -p $parent $T)
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fi &&
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eval $name=$oid &&
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parent=$oid &&
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shift ||
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return 1
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done &&
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git -C "$repo" update-ref refs/heads/master $oid
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}
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# Create pack in <repo> and assign pack id to variable given in the 2nd argument
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# (<name>). Commits in the pack will be read from stdin. E.g.:
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#
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# create_pack_in <repo> <name> <<-EOF
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# ...
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# EOF
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#
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# NOTE: commits from stdin should be given using heredoc, not using pipe, and
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# avoid calling this function from a subshell since variable assignments will
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# disappear when subshell exits.
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create_pack_in () {
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repo="$1" &&
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name="$2" &&
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pack=$(git -C "$repo/objects/pack" pack-objects -q pack) &&
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eval $name=$pack &&
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eval P$pack=$name:$pack
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}
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format_packfiles () {
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sed \
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-e "s#.*/pack-\(.*\)\.idx#\1#" \
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-e "s#.*/pack-\(.*\)\.pack#\1#" |
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sort -u |
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while read p
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do
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if test -z "$(eval echo \${P$p})"
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then
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echo $p
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else
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eval echo "\${P$p}"
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fi
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done |
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sort
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}
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test_expect_success 'setup master repo' '
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git init --bare "$master_repo" &&
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create_commits_in "$master_repo" A B C D E F G H I J K L M N O P Q R
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'
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#############################################################################
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# Chart of packs and objects for this test case
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#
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# | T A B C D E F G H I J K L M N O P Q R
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# ----+--------------------------------------
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# P1 | x x x x x x x x
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# P2 | x x x x x x x
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# P3 | x x x x x x
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# ----+--------------------------------------
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# ALL | x x x x x x x x x x x x x x x
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#
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#############################################################################
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test_expect_success 'master: no redundant for pack 1, 2, 3' '
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create_pack_in "$master_repo" P1 <<-EOF &&
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$T
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$A
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$B
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$C
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$D
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$E
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$F
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$R
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EOF
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create_pack_in "$master_repo" P2 <<-EOF &&
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$B
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$C
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$D
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$E
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$G
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$H
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$I
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EOF
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create_pack_in "$master_repo" P3 <<-EOF &&
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$F
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$I
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$J
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$K
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$L
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$M
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EOF
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(
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cd "$master_repo" &&
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git pack-redundant --all >out &&
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test_must_be_empty out
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)
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'
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#############################################################################
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# Chart of packs and objects for this test case
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#
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# | T A B C D E F G H I J K L M N O P Q R
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# ----+--------------------------------------
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# P1 | x x x x x x x x
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# P2* | ! ! ! ! ! ! !
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# P3 | x x x x x x
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# P4 | x x x x x
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# P5 | x x x x
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# ----+--------------------------------------
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# ALL | x x x x x x x x x x x x x x x x x x
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#
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#############################################################################
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test_expect_success 'master: one of pack-2/pack-3 is redundant' '
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create_pack_in "$master_repo" P4 <<-EOF &&
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$J
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$K
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$L
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$M
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$P
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EOF
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create_pack_in "$master_repo" P5 <<-EOF &&
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$G
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$H
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$N
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$O
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EOF
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(
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cd "$master_repo" &&
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cat >expect <<-EOF &&
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P2:$P2
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EOF
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git pack-redundant --all >out &&
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format_packfiles <out >actual &&
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test_cmp expect actual
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)
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'
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#############################################################################
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# Chart of packs and objects for this test case
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#
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# | T A B C D E F G H I J K L M N O P Q R
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# ----+--------------------------------------
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# P1 | x x x x x x x x
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# P2* | ! ! ! ! ! ! !
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# P3 | x x x x x x
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# P4* | ! ! ! ! !
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# P5 | x x x x
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# P6* | ! ! !
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# P7 | x x
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# ----+--------------------------------------
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# ALL | x x x x x x x x x x x x x x x x x x x
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#
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#############################################################################
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test_expect_success 'master: pack 2, 4, and 6 are redundant' '
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create_pack_in "$master_repo" P6 <<-EOF &&
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$N
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$O
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$Q
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EOF
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create_pack_in "$master_repo" P7 <<-EOF &&
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$P
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$Q
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EOF
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(
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cd "$master_repo" &&
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cat >expect <<-EOF &&
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P2:$P2
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P4:$P4
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P6:$P6
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EOF
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git pack-redundant --all >out &&
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format_packfiles <out >actual &&
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test_cmp expect actual
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)
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'
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#############################################################################
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# Chart of packs and objects for this test case
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#
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# | T A B C D E F G H I J K L M N O P Q R
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# ----+--------------------------------------
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# P1 | x x x x x x x x
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# P2* | ! ! ! ! ! ! !
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# P3 | x x x x x x
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# P4* | ! ! ! ! !
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# P5 | x x x x
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# P6* | ! ! !
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# P7 | x x
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# P8* | !
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# ----+--------------------------------------
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# ALL | x x x x x x x x x x x x x x x x x x x
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#
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#############################################################################
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test_expect_success 'master: pack-8 (subset of pack-1) is also redundant' '
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create_pack_in "$master_repo" P8 <<-EOF &&
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$A
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EOF
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(
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cd "$master_repo" &&
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cat >expect <<-EOF &&
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P2:$P2
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P4:$P4
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P6:$P6
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P8:$P8
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EOF
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git pack-redundant --all >out &&
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format_packfiles <out >actual &&
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test_cmp expect actual
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)
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'
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test_expect_success 'master: clean loose objects' '
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(
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cd "$master_repo" &&
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git prune-packed &&
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find objects -type f | sed -e "/objects\/pack\//d" >out &&
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test_must_be_empty out
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)
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'
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test_expect_success 'master: remove redundant packs and pass fsck' '
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(
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cd "$master_repo" &&
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git pack-redundant --all | xargs rm &&
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git fsck &&
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git pack-redundant --all >out &&
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test_must_be_empty out
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)
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'
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# The following test cases will execute inside `shared.git`, instead of
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# inside `master.git`.
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test_expect_success 'setup shared.git' '
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git clone --mirror "$master_repo" "$shared_repo" &&
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(
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cd "$shared_repo" &&
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printf "../../$master_repo/objects\n" >objects/info/alternates
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)
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'
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test_expect_success 'shared: all packs are redundant, but no output without --alt-odb' '
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(
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cd "$shared_repo" &&
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git pack-redundant --all >out &&
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test_must_be_empty out
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)
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'
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#############################################################################
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# Chart of packs and objects for this test case
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#
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# ================ master.git ===============
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# | T A B C D E F G H I J K L M N O P Q R <----------+
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# ----+-------------------------------------- |
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# P1 | x x x x x x x x |
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# P3 | x x x x x x |
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# P5 | x x x x |
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# P7 | x x |
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# ----+-------------------------------------- |
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# ALL | x x x x x x x x x x x x x x x x x x x |
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# |
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# |
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# ================ shared.git =============== |
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# | T A B C D E F G H I J K L M N O P Q R <objects/info/alternates>
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# ----+--------------------------------------
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# P1* | s s s s s s s s
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# P3* | s s s s s s
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# P5* | s s s s
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# P7* | s s
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# ----+--------------------------------------
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# ALL | x x x x x x x x x x x x x x x x x x x
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#
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#############################################################################
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test_expect_success 'shared: show redundant packs in stderr for verbose mode' '
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(
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cd "$shared_repo" &&
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cat >expect <<-EOF &&
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P1:$P1
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P3:$P3
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P5:$P5
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P7:$P7
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EOF
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git pack-redundant --all --verbose >out 2>out.err &&
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test_must_be_empty out &&
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grep "pack$" out.err | format_packfiles >actual &&
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test_cmp expect actual
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)
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'
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test_expect_success 'shared: remove redundant packs, no packs left' '
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(
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cd "$shared_repo" &&
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cat >expect <<-EOF &&
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fatal: Zero packs found!
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EOF
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git pack-redundant --all --alt-odb | xargs rm &&
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git fsck &&
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test_must_fail git pack-redundant --all --alt-odb >actual 2>&1 &&
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test_cmp expect actual
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)
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'
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test_expect_success 'shared: create new objects and packs' '
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create_commits_in "$shared_repo" X Y Z &&
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create_pack_in "$shared_repo" Px1 <<-EOF &&
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$X
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$Y
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$Z
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$A
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$B
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$C
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EOF
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create_pack_in "$shared_repo" Px2 <<-EOF
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$X
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$Y
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$Z
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$D
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$E
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$F
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EOF
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'
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test_expect_success 'shared: no redundant without --alt-odb' '
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(
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cd "$shared_repo" &&
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git pack-redundant --all >out &&
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test_must_be_empty out
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)
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'
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#############################################################################
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# Chart of packs and objects for this test case
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#
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# ================ master.git ===============
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# | T A B C D E F G H I J K L M N O P Q R <----------------+
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# ----+-------------------------------------- |
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# P1 | x x x x x x x x |
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# P3 | x x x x x x |
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# P5 | x x x x |
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# P7 | x x |
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# ----+-------------------------------------- |
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# ALL | x x x x x x x x x x x x x x x x x x x |
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# |
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# |
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# ================ shared.git ======================= |
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# | 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>
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# ----+----------------------------------------------
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# Px1 | s s s x x x
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# Px2*| s s s ! ! !
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# ----+----------------------------------------------
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# ALL | s s s s s s s s s s s s s s s s s s s x x x
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#
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#############################################################################
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test_expect_success 'shared: one pack is redundant with --alt-odb' '
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(
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cd "$shared_repo" &&
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git pack-redundant --all --alt-odb >out &&
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format_packfiles <out >actual &&
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test_line_count = 1 actual
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)
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'
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#############################################################################
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# Chart of packs and objects for this test case
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#
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# ================ master.git ===============
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# | T A B C D E F G H I J K L M N O P Q R <----------------+
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# ----+-------------------------------------- |
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# P1 | x x x x x x x x |
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# P3 | x x x x x x |
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# P5 | x x x x |
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# P7 | x x |
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# ----+-------------------------------------- |
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# ALL | x x x x x x x x x x x x x x x x x x x |
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# |
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# |
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# ================ shared.git ======================= |
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# | 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>
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# ----+----------------------------------------------
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# Px1*| s s s i i i
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# Px2*| s s s i i i
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# ----+----------------------------------------------
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# ALL | s s s s s s s s s s s s s s s s s s s i i i
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# (ignored objects, marked with i)
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#
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#############################################################################
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test_expect_success 'shared: ignore unique objects and all two packs are redundant' '
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(
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cd "$shared_repo" &&
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cat >expect <<-EOF &&
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Px1:$Px1
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Px2:$Px2
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EOF
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git pack-redundant --all --alt-odb >out <<-EOF &&
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$X
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$Y
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$Z
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EOF
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format_packfiles <out >actual &&
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test_cmp expect actual
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)
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'
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test_done
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