[PATCH 5/5] git-daemon tests: wait until daemon is ready
From: Clemens Buchacher <hidden>
Date: 2016-06-15 22:52:44
Subsystem:
the rest · Maintainer:
Linus Torvalds
In start_daemon, git-daemon is started as a background process. In theory, the tests may try to connect before the daemon had a chance to open a listening socket. Avoid this race condition by waiting for it to output "Ready to rumble". Any other output is considered an error and the test is aborted. Should git-daemon produce no output at all, lib-git-daemon would block forever. This could be fixed by introducing a timeout. On the other hand, we have no timeout for other git commands which could suffer from the same problem. Since such a mechanism adds some complexity, I have decided against it. Signed-off-by: Clemens Buchacher <redacted> --- t/lib-git-daemon.sh | 18 +++++++++++++++++- 1 files changed, 17 insertions(+), 1 deletions(-)
diff --git a/t/lib-git-daemon.sh b/t/lib-git-daemon.sh
index 5e81a25..ef2d01f 100644
--- a/t/lib-git-daemon.sh
+++ b/t/lib-git-daemon.sh@@ -23,12 +23,27 @@ start_git_daemon() { trap 'code=$?; stop_git_daemon; (exit $code); die' EXIT say >&3 "Starting git daemon ..." + mkfifo git_daemon_output git daemon --listen=127.0.0.1 --port="$LIB_GIT_DAEMON_PORT" \ --reuseaddr --verbose \ --base-path="$GIT_DAEMON_DOCUMENT_ROOT_PATH" \ "$@" "$GIT_DAEMON_DOCUMENT_ROOT_PATH" \ - >&3 2>&4 & + >&3 2>git_daemon_output & GIT_DAEMON_PID=$! + { + read line + echo >&4 "$line" + cat >&4 & + + # Check expected output + if test x"$(expr "$line" : "\[[0-9]*\] \(.*\)")" != x"Ready to rumble" + then + kill "$GIT_DAEMON_PID" + wait "$GIT_DAEMON_PID" + trap 'die' EXIT + error "git daemon failed to start" + fi + } <git_daemon_output } stop_git_daemon() {
@@ -50,4 +65,5 @@ stop_git_daemon() { error "git daemon exited with status: $ret" fi GIT_DAEMON_PID= + rm -f git_daemon_output }
--
1.7.8