[PATCH v4 5/7] t5543-atomic-push.sh: add basic tests for atomic pushes

@@ -0,0 +1,101 @@
+#!/bin/sh
+
+test_description='pushing to a mirror repository'
+
+. ./test-lib.sh
+
+D=`pwd`
+
+invert () {
+	if "$@"; then
+		return 1
+	else
+		return 0
+	fi
+}
+
+mk_repo_pair () {
+	rm -rf master mirror &&
+	mkdir mirror &&
+	(
+		cd mirror &&
+		git init &&
+		git config receive.denyCurrentBranch warn
+	) &&
+	mkdir master &&
+	(
+		cd master &&
+		git init &&
+		git remote add $1 up ../mirror
+	)
+}
+
+
+test_expect_success 'atomic push works for a single branch' '
+
+	mk_repo_pair &&
+	(
+		cd master &&
+		echo one >foo && git add foo && git commit -m one &&
+		git push --mirror up
+		echo two >foo && git add foo && git commit -m two &&
+		git push --atomic-push --mirror up
+	) &&
+	master_master=$(cd master && git show-ref -s --verify refs/heads/master) &&
+	mirror_master=$(cd mirror && git show-ref -s --verify refs/heads/master) &&
+	test "$master_master" = "$mirror_master"
+
+'
+
+test_expect_success 'atomic push works for two branches' '
+
+	mk_repo_pair &&
+	(
+		cd master &&
+		echo one >foo && git add foo && git commit -m one &&
+		git branch second &&
+		git push --mirror up
+		echo two >foo && git add foo && git commit -m two &&
+		git checkout second &&
+		echo three >foo && git add foo && git commit -m three &&
+		git checkout master &&
+		git push --atomic-push --mirror up
+	) &&
+	master_master=$(cd master && git show-ref -s --verify refs/heads/master) &&
+	mirror_master=$(cd mirror && git show-ref -s --verify refs/heads/master) &&
+	test "$master_master" = "$mirror_master"
+
+	master_second=$(cd master && git show-ref -s --verify refs/heads/second) &&
+	mirror_second=$(cd mirror && git show-ref -s --verify refs/heads/second) &&
+	test "$master_second" = "$mirror_second"
+'
+
+# set up two branches where master can be pushed but second can not
+# (non-fast-forward). Since second can not be pushed the whole operation
+# will fail and leave master untouched.
+test_expect_success 'atomic push fails if one branch fails' '
+	mk_repo_pair &&
+	(
+		cd master &&
+		echo one >foo && git add foo && git commit -m one &&
+		git branch second &&
+		git checkout second &&
+		echo two >foo && git add foo && git commit -m two &&
+		echo three >foo && git add foo && git commit -m three &&
+		echo four >foo && git add foo && git commit -m four &&
+		git push --mirror up
+		git reset --hard HEAD~2 &&
+		git checkout master
+		echo five >foo && git add foo && git commit -m five &&
+		! git push --atomic-push --all up
+	) &&
+	master_master=$(cd master && git show-ref -s --verify refs/heads/master) &&
+	mirror_master=$(cd mirror && git show-ref -s --verify refs/heads/master) &&
+	test "$master_master" != "$mirror_master" &&
+
+	master_second=$(cd master && git show-ref -s --verify refs/heads/second) &&
+	mirror_second=$(cd mirror && git show-ref -s --verify refs/heads/second) &&
+	test "$master_second" != "$mirror_second"
+'
+
+test_done