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>
---
t/t5323-pack-redundant.sh | 207 ++++++++++++++++++++++++++++++++++++++
1 file changed, 207 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..407838f0e8
--- /dev/null
+++ b/t/t5323-pack-redundant.sh
@@ -0,0 +1,207 @@
+#!/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 .git/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 .git/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 .git/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 .git/objects/pack pack-objects -q pack <<-EOF
+ $J
+ $K
+ $L
+ $M
+ $P
+ EOF
+ ) &&
+ eval P$P4=P4:$P4
+}
+
+create_pack_5() {
+ P5=$(git -C .git/objects/pack pack-objects -q pack <<-EOF
+ $G
+ $H
+ $N
+ $O
+ EOF
+ ) &&
+ eval P$P5=P5:$P5
+}
+
+create_pack_6() {
+ P6=$(git -C .git/objects/pack pack-objects -q pack <<-EOF
+ $N
+ $O
+ $Q
+ EOF
+ ) &&
+ eval P$P6=P6:$P6
+}
+
+create_pack_7() {
+ P7=$(git -C .git/objects/pack pack-objects -q pack <<-EOF
+ $P
+ $Q
+ EOF
+ ) &&
+ eval P$P7=P7:$P7
+}
+
+create_pack_8() {
+ P8=$(git -C .git/objects/pack pack-objects -q pack <<-EOF
+ $A
+ EOF
+ ) &&
+ eval P$P8=P8:$P8
+}
+
+test_expect_success 'setup' '
+ create_commits
+'
+
+test_expect_success 'no redundant packs' '
+ create_pack_1 && create_pack_2 && create_pack_3 &&
+ git pack-redundant --all >out &&
+ test_must_be_empty out
+'
+
+test_expect_success 'create pack 4, 5' '
+ create_pack_4 && create_pack_5
+'
+
+cat >expected <<EOF
+P2:$P2
+EOF
+
+test_expect_success 'one of pack-2/pack-3 is redundant' '
+ git pack-redundant --all >out &&
+ sed \
+ -e "s#.*/pack-\(.*\)\.idx#\1#" \
+ -e "s#.*/pack-\(.*\)\.pack#\1#" out |
+ sort -u |
+ while read p; do eval echo "\${P$p}"; done |
+ sort >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 &&
+ sed \
+ -e "s#.*/pack-\(.*\)\.idx#\1#" \
+ -e "s#.*/pack-\(.*\)\.pack#\1#" out |
+ sort -u |
+ while read p; do eval echo "\${P$p}"; done |
+ sort >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'create pack 8' '
+ create_pack_8
+'
+
+cat >expected <<EOF
+P2:$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 &&
+ sed \
+ -e "s#.*/pack-\(.*\)\.idx#\1#" \
+ -e "s#.*/pack-\(.*\)\.pack#\1#" out |
+ sort -u |
+ while read p; do eval echo "\${P$p}"; done |
+ sort >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'clean loose objects' '
+ git prune-packed &&
+ find .git/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_done
--
2.20.0.3.gc45e608566
