[PATCH v2 1/3] t5322: test cases for git-pack-redundant

[Jiang Xin <worldhello.net@gmail.com>]

From: Jiang Xin <zhiyou.jx@alibaba-inc.com>

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>
---
 t/t5322-pack-redundant.sh | 69 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100755 t/t5322-pack-redundant.sh

diff --git a/t/t5322-pack-redundant.sh b/t/t5322-pack-redundant.sh
new file mode 100755
index 0000000000..4add9c2bb1
--- /dev/null
+++ b/t/t5322-pack-redundant.sh
@@ -0,0 +1,69 @@
+#!/bin/sh
+#
+# Copyright (c) 2018 Jiang Xin
+#
+
+test_description='git redundant test'
+
+. ./test-lib.sh
+
+create_commits()
+{
+	set -e
+	parent=
+	for name in A B C D E F G H I J K L M
+	do
+		test_tick
+		T=$(git write-tree)
+		if test -z "$parent"
+		then
+			sha1=$(echo $name | git commit-tree $T)
+		else
+			sha1=$(echo $name | git commit-tree -p $parent $T)
+		fi
+		eval $name=$sha1
+		parent=$sha1
+	done
+	git update-ref refs/heads/master $M
+}
+
+create_redundant_packs()
+{
+	set -e
+	cd .git/objects/pack
+	P1=$(printf "$T\n$A\n" | git pack-objects pack 2>/dev/null)
+	P2=$(printf "$T\n$A\n$B\n$C\n$D\n$E\n" | git pack-objects pack 2>/dev/null)
+	P3=$(printf "$C\n$D\n$F\n$G\n$I\n$J\n" | git pack-objects pack 2>/dev/null)
+	P4=$(printf "$D\n$E\n$G\n$H\n$J\n$K\n" | git pack-objects pack 2>/dev/null)
+	P5=$(printf "$F\n$G\n$H\n" | git pack-objects pack 2>/dev/null)
+	P6=$(printf "$F\n$I\n$L\n" | git pack-objects pack 2>/dev/null)
+	P7=$(printf "$H\n$K\n$M\n" | git pack-objects pack 2>/dev/null)
+	P8=$(printf "$L\n$M\n" | git pack-objects pack 2>/dev/null)
+	cd -
+}
+
+# Create commits and packs
+create_commits
+create_redundant_packs
+
+test_expect_success 'clear loose objects' '
+	git prune-packed &&
+	test $(find .git/objects -type f | grep -v pack | wc -l) -eq 0
+'
+
+printf "$P1\n$P4\n$P5\n$P6\n" | sort >expected
+
+test_expect_success 'git pack-redundant --all' '
+	git pack-redundant --all | \
+		sed -e "s#^.*/pack-\(.*\)\.\(idx\|pack\)#\1#g" | \
+		sort -u >actual &&
+	test_cmp expected actual
+'
+
+test_expect_success 'remove redundant packs' '
+	git pack-redundant --all | xargs rm &&
+	git fsck &&
+	test $(git pack-redundant --all | wc -l) -eq 0
+'
+
+test_done
-- 
2.20.0.3.gc45e608566