From: Jiang Xin <zhiyou.jx@xxxxxxxxxxxxxxx>
Add test cases for git pack-redundant to validate new algorithm for git
pack-redundant.
Signed-off-by: Jiang Xin <zhiyou.jx@xxxxxxxxxxxxxxx>
Reviewed-by: SZEDER Gábor <szeder.dev@xxxxxxxxx>
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
t/t5323-pack-redundant.sh | 322 ++++++++++++++++++++++++++++++++++++++
1 file changed, 322 insertions(+)
create mode 100755 t/t5323-pack-redundant.sh
diff --git a/t/t5323-pack-redundant.sh b/t/t5323-pack-redundant.sh
new file mode 100755
index 0000000000..710fe9884c
--- /dev/null
+++ b/t/t5323-pack-redundant.sh
@@ -0,0 +1,322 @@
+#!/bin/sh
+#
+# Copyright (c) 2018 Jiang Xin
+#
+
+test_description='git pack-redundant test'
+
+. ./test-lib.sh
+
+create_commits () {
+ parent=
+ for name in A B C D E F G H I J K L M N O P Q R
+ do
+ test_tick &&
+ T=$(git write-tree) &&
+ if test -z "$parent"
+ then
+ oid=$(echo $name | git commit-tree $T)
+ else
+ oid=$(echo $name | git commit-tree -p $parent $T)
+ fi &&
+ eval $name=$oid &&
+ parent=$oid ||
+ return 1
+ done
+ git update-ref refs/heads/master $R
+}
+
+create_pack_1 () {
+ P1=$(git -C objects/pack pack-objects -q pack <<-EOF
+ $T
+ $A
+ $B
+ $C
+ $D
+ $E
+ $F
+ $R
+ EOF
+ ) &&
+ eval P$P1=P1:$P1
+}
+
+create_pack_2 () {
+ P2=$(git -C objects/pack pack-objects -q pack <<-EOF
+ $B
+ $C
+ $D
+ $E
+ $G
+ $H
+ $I
+ EOF
+ ) &&
+ eval P$P2=P2:$P2
+}
+
+create_pack_3 () {
+ P3=$(git -C objects/pack pack-objects -q pack <<-EOF
+ $F
+ $I
+ $J
+ $K
+ $L
+ $M
+ EOF
+ ) &&
+ eval P$P3=P3:$P3
+}
+
+create_pack_4 () {
+ P4=$(git -C objects/pack pack-objects -q pack <<-EOF
+ $J
+ $K
+ $L
+ $M
+ $P
+ EOF
+ ) &&
+ eval P$P4=P4:$P4
+}
+
+create_pack_5 () {
+ P5=$(git -C objects/pack pack-objects -q pack <<-EOF
+ $G
+ $H
+ $N
+ $O
+ EOF
+ ) &&
+ eval P$P5=P5:$P5
+}
+
+create_pack_6 () {
+ P6=$(git -C objects/pack pack-objects -q pack <<-EOF
+ $N
+ $O
+ $Q
+ EOF
+ ) &&
+ eval P$P6=P6:$P6
+}
+
+create_pack_7 () {
+ P7=$(git -C objects/pack pack-objects -q pack <<-EOF
+ $P
+ $Q
+ EOF
+ ) &&
+ eval P$P7=P7:$P7
+}
+
+create_pack_8 () {
+ P8=$(git -C objects/pack pack-objects -q pack <<-EOF
+ $A
+ EOF
+ ) &&
+ eval P$P8=P8:$P8
+}
+
+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.git' '
+ git init --bare master.git &&
+ cd master.git &&
+ create_commits
+'
+
+test_expect_success 'no redundant for pack 1, 2, 3' '
+ create_pack_1 && create_pack_2 && create_pack_3 &&
+ git pack-redundant --all >out &&
+ test_must_be_empty out
+'
+
+test_expect_success 'create pack 4, 5' '
+ create_pack_4 && create_pack_5
+'
+
+cat >expected <<EOF
+P2:$P2
+EOF
+
+test_expect_success 'one of pack-2/pack-3 is redundant' '
+ git pack-redundant --all >out &&
+ format_packfiles <out >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'create pack 6, 7' '
+ create_pack_6 && create_pack_7
+'
+
+# Only after calling create_pack_6, we can use $P6 variable.
+cat >expected <<EOF
+P2:$P2
+P4:$P4
+P6:$P6
+EOF
+
+test_expect_success 'pack 2, 4, and 6 are redundant' '
+ git pack-redundant --all >out &&
+ format_packfiles <out >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'create pack 8' '
+ create_pack_8
+'
+
+cat >expected <<EOF
+P2:$P2
+P4:$P4
+P6:$P6
+P8:$P8
+EOF
+
+test_expect_success 'pack-8 (subset of pack-1) is also redundant' '
+ git pack-redundant --all >out &&
+ format_packfiles <out >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'clean loose objects' '
+ git prune-packed &&
+ find objects -type f | sed -e "/objects\/pack\//d" >out &&
+ test_must_be_empty out
+'
+
+test_expect_success 'remove redundant packs and pass fsck' '
+ git pack-redundant --all | xargs rm &&
+ git fsck --no-progress &&
+ git pack-redundant --all >out &&
+ test_must_be_empty out
+'
+
+test_expect_success 'setup shared.git' '
+ cd "$TRASH_DIRECTORY" &&
+ git clone -q --mirror master.git shared.git &&
+ cd shared.git &&
+ printf "../../master.git/objects" >objects/info/alternates
+'
+
+test_expect_success 'no redundant packs without --alt-odb' '
+ git pack-redundant --all >out &&
+ test_must_be_empty out
+'
+
+cat >expected <<EOF
+P1:$P1
+P3:$P3
+P5:$P5
+P7:$P7
+EOF
+
+test_expect_success 'pack-redundant --verbose: show duplicate packs in stderr' '
+ git pack-redundant --all --verbose >out 2>out.err &&
+ test_must_be_empty out &&
+ grep "pack$" out.err | format_packfiles >actual &&
+ test_cmp expected actual
+'
+
+cat >expected <<EOF
+fatal: Zero packs found!
+EOF
+
+test_expect_success 'remove redundant packs by alt-odb, no packs left' '
+ git pack-redundant --all --alt-odb | xargs rm &&
+ git fsck --no-progress &&
+ test_must_fail git pack-redundant --all --alt-odb >actual 2>&1 &&
+ test_cmp expected actual
+'
+
+create_commits_others () {
+ parent=$(git rev-parse HEAD)
+ for name in X Y Z
+ do
+ test_tick &&
+ T=$(git write-tree) &&
+ if test -z "$parent"
+ then
+ oid=$(echo $name | git commit-tree $T)
+ else
+ oid=$(echo $name | git commit-tree -p $parent $T)
+ fi &&
+ eval $name=$oid &&
+ parent=$oid ||
+ return 1
+ done
+ git update-ref refs/heads/master $Z
+}
+
+create_pack_x1 () {
+ Px1=$(git -C objects/pack pack-objects -q pack <<-EOF
+ $X
+ $Y
+ $Z
+ $A
+ $B
+ $C
+ EOF
+ ) &&
+ eval P${Px1}=Px1:${Px1}
+}
+
+create_pack_x2 () {
+ Px2=$(git -C objects/pack pack-objects -q pack <<-EOF
+ $X
+ $Y
+ $Z
+ $D
+ $E
+ $F
+ EOF
+ ) &&
+ eval P${Px2}=Px2:${Px2}
+}
+
+test_expect_success 'new objects and packs in shared.git' '
+ create_commits_others &&
+ create_pack_x1 &&
+ create_pack_x2 &&
+ git pack-redundant --all >out &&
+ test_must_be_empty out
+'
+
+test_expect_success 'one pack is redundant' '
+ git pack-redundant --all --alt-odb >out &&
+ format_packfiles <out >actual &&
+ test_line_count = 1 actual
+'
+
+cat >expected <<EOF
+Px1:$Px1
+Px2:$Px2
+EOF
+
+test_expect_success 'set ignore objects and all two packs are redundant' '
+ git pack-redundant --all --alt-odb >out <<-EOF &&
+ $X
+ $Y
+ $Z
+ EOF
+ format_packfiles <out >actual &&
+ test_cmp expected actual
+'
+
+test_done
--
2.20.1.103.ged0fc2ca7b
