[PATCH 3/5] git-daemon: add tests

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The semantics of the git daemon tests are similar to the http transport
tests.  In fact, they are only a slightly modified copy of t5550, plus the
newly added remote error tests.

All git-daemon tests will be skipped unless the environment variable
GIT_TEST_GIT_DAEMON is set.

Signed-off-by: Clemens Buchacher <drizzd@xxxxxx>
Helped-by: Jeff King <peff@xxxxxxxx>
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
 t/lib-git-daemon.sh   |   53 +++++++++++++++++
 t/t5570-git-daemon.sh |  148 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 201 insertions(+), 0 deletions(-)
 create mode 100644 t/lib-git-daemon.sh
 create mode 100755 t/t5570-git-daemon.sh

diff --git a/t/lib-git-daemon.sh b/t/lib-git-daemon.sh
new file mode 100644
index 0000000..5e81a25
--- /dev/null
+++ b/t/lib-git-daemon.sh
@@ -0,0 +1,53 @@
+#!/bin/sh
+
+if test -z "$GIT_TEST_GIT_DAEMON"
+then
+	skip_all="git-daemon testing disabled (define GIT_TEST_GIT_DAEMON to enable)"
+	test_done
+fi
+
+LIB_GIT_DAEMON_PORT=${LIB_GIT_DAEMON_PORT-'8121'}
+
+GIT_DAEMON_PID=
+GIT_DAEMON_DOCUMENT_ROOT_PATH="$PWD"/repo
+GIT_DAEMON_URL=git://127.0.0.1:$LIB_GIT_DAEMON_PORT
+
+start_git_daemon() {
+	if test -n "$GIT_DAEMON_PID"
+	then
+		error "start_git_daemon already called"
+	fi
+
+	mkdir -p "$GIT_DAEMON_DOCUMENT_ROOT_PATH"
+
+	trap 'code=$?; stop_git_daemon; (exit $code); die' EXIT
+
+	say >&3 "Starting git daemon ..."
+	git daemon --listen=127.0.0.1 --port="$LIB_GIT_DAEMON_PORT" \
+		--reuseaddr --verbose \
+		--base-path="$GIT_DAEMON_DOCUMENT_ROOT_PATH" \
+		"$@" "$GIT_DAEMON_DOCUMENT_ROOT_PATH" \
+		>&3 2>&4 &
+	GIT_DAEMON_PID=$!
+}
+
+stop_git_daemon() {
+	if test -z "$GIT_DAEMON_PID"
+	then
+		return
+	fi
+
+	trap 'die' EXIT
+
+	# kill git-daemon child of git
+	say >&3 "Stopping git daemon ..."
+	kill "$GIT_DAEMON_PID"
+	wait "$GIT_DAEMON_PID" >&3 2>&4
+	ret=$?
+	# expect exit with status 143 = 128+15 for signal TERM=15
+	if test $ret -ne 143
+	then
+		error "git daemon exited with status: $ret"
+	fi
+	GIT_DAEMON_PID=
+}
diff --git a/t/t5570-git-daemon.sh b/t/t5570-git-daemon.sh
new file mode 100755
index 0000000..7cbc999
--- /dev/null
+++ b/t/t5570-git-daemon.sh
@@ -0,0 +1,148 @@
+#!/bin/sh
+
+test_description='test fetching over git protocol'
+. ./test-lib.sh
+
+LIB_GIT_DAEMON_PORT=${LIB_GIT_DAEMON_PORT-5570}
+. "$TEST_DIRECTORY"/lib-git-daemon.sh
+start_git_daemon
+
+test_expect_success 'setup repository' '
+	echo content >file &&
+	git add file &&
+	git commit -m one
+'
+
+test_expect_success 'create git-accessible bare repository' '
+	mkdir "$GIT_DAEMON_DOCUMENT_ROOT_PATH/repo.git" &&
+	(cd "$GIT_DAEMON_DOCUMENT_ROOT_PATH/repo.git" &&
+	 git --bare init &&
+	 : >git-daemon-export-ok
+	) &&
+	git remote add public "$GIT_DAEMON_DOCUMENT_ROOT_PATH/repo.git" &&
+	git push public master:master
+'
+
+test_expect_success 'clone git repository' '
+	git clone "$GIT_DAEMON_URL/repo.git" clone &&
+	test_cmp file clone/file
+'
+
+test_expect_success 'fetch changes via git protocol' '
+	echo content >>file &&
+	git commit -a -m two &&
+	git push public &&
+	(cd clone && git pull) &&
+	test_cmp file clone/file
+'
+
+test_expect_failure 'remote detects correct HEAD' '
+	git push public master:other &&
+	(cd clone &&
+	 git remote set-head -d origin &&
+	 git remote set-head -a origin &&
+	 git symbolic-ref refs/remotes/origin/HEAD > output &&
+	 echo refs/remotes/origin/master > expect &&
+	 test_cmp expect output
+	)
+'
+
+test_expect_success 'prepare pack objects' '
+	cp -R "$GIT_DAEMON_DOCUMENT_ROOT_PATH"/repo.git "$GIT_DAEMON_DOCUMENT_ROOT_PATH"/repo_pack.git &&
+	(cd "$GIT_DAEMON_DOCUMENT_ROOT_PATH"/repo_pack.git &&
+	 git --bare repack -a -d
+	)
+'
+
+test_expect_success 'fetch notices corrupt pack' '
+	cp -R "$GIT_DAEMON_DOCUMENT_ROOT_PATH"/repo_pack.git "$GIT_DAEMON_DOCUMENT_ROOT_PATH"/repo_bad1.git &&
+	(cd "$GIT_DAEMON_DOCUMENT_ROOT_PATH"/repo_bad1.git &&
+	 p=`ls objects/pack/pack-*.pack` &&
+	 chmod u+w $p &&
+	 printf %0256d 0 | dd of=$p bs=256 count=1 seek=1 conv=notrunc
+	) &&
+	mkdir repo_bad1.git &&
+	(cd repo_bad1.git &&
+	 git --bare init &&
+	 test_must_fail git --bare fetch "$GIT_DAEMON_URL/repo_bad1.git" &&
+	 test 0 = `ls objects/pack/pack-*.pack | wc -l`
+	)
+'
+
+test_expect_success 'fetch notices corrupt idx' '
+	cp -R "$GIT_DAEMON_DOCUMENT_ROOT_PATH"/repo_pack.git "$GIT_DAEMON_DOCUMENT_ROOT_PATH"/repo_bad2.git &&
+	(cd "$GIT_DAEMON_DOCUMENT_ROOT_PATH"/repo_bad2.git &&
+	 p=`ls objects/pack/pack-*.idx` &&
+	 chmod u+w $p &&
+	 printf %0256d 0 | dd of=$p bs=256 count=1 seek=1 conv=notrunc
+	) &&
+	mkdir repo_bad2.git &&
+	(cd repo_bad2.git &&
+	 git --bare init &&
+	 test_must_fail git --bare fetch "$GIT_DAEMON_URL/repo_bad2.git" &&
+	 test 0 = `ls objects/pack | wc -l`
+	)
+'
+
+test_remote_error()
+{
+	do_export=YesPlease
+	while test $# -gt 0
+	do
+		case $1 in
+		-x)
+			shift
+			chmod -x "$GIT_DAEMON_DOCUMENT_ROOT_PATH/repo.git"
+			;;
+		-n)
+			shift
+			do_export=
+			;;
+		*)
+			break
+		esac
+	done
+
+	if test $# -ne 3
+	then
+		error "invalid number of arguments"
+	fi
+
+	cmd=$1
+	repo=$2
+	msg=$3
+
+	if test -x "$GIT_DAEMON_DOCUMENT_ROOT_PATH/$repo"
+	then
+		if test -n "$do_export"
+		then
+			: >"$GIT_DAEMON_DOCUMENT_ROOT_PATH/$repo/git-daemon-export-ok"
+		else
+			rm -f "$GIT_DAEMON_DOCUMENT_ROOT_PATH/$repo/git-daemon-export-ok"
+		fi
+	fi
+
+	test_must_fail git "$cmd" "$GIT_DAEMON_URL/$repo" 2>output &&
+	echo "fatal: remote error: $msg: /$repo" >expect &&
+	test_cmp expect output
+	ret=$?
+	chmod +x "$GIT_DAEMON_DOCUMENT_ROOT_PATH/repo.git"
+	(exit $ret)
+}
+
+msg="access denied or repository not exported"
+test_expect_success 'clone non-existent' "test_remote_error    clone nowhere.git '$msg'"
+test_expect_success 'push disabled'      "test_remote_error    push  repo.git    '$msg'"
+test_expect_success 'read access denied' "test_remote_error -x fetch repo.git    '$msg'"
+test_expect_success 'not exported'       "test_remote_error -n fetch repo.git    '$msg'"
+
+stop_git_daemon
+start_git_daemon --informative-errors
+
+test_expect_success 'clone non-existent' "test_remote_error    clone nowhere.git 'no such repository'"
+test_expect_success 'push disabled'      "test_remote_error    push  repo.git    'service not enabled'"
+test_expect_success 'read access denied' "test_remote_error -x fetch repo.git    'no such repository'"
+test_expect_success 'not exported'       "test_remote_error -n fetch repo.git    'repository not exported'"
+
+stop_git_daemon
+test_done
-- 
1.7.8

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