tests: check visibility of pending changesets
Verify that pending changesets are seen by pretxn* hooks but not by other
processes that access the destination repo while the hooks are running.
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-pending.t Wed Dec 29 18:29:15 2010 -0800
@@ -0,0 +1,117 @@
+Verify that pending changesets are seen by pretxn* hooks but not by other
+processes that access the destination repo while the hooks are running.
+
+The hooks (python and external) both reject changesets after some think time,
+during which another process runs pull. Each hook creates a file ('notify') to
+indicate to the controlling process that it is running; the process removes the
+file to indicate the hook can terminate.
+
+init env vars
+
+ $ d=`pwd`
+ $ maxwait=20
+
+utility to run the test - start a push in the background and run pull
+
+ $ dotest() {
+ > rm -f notify
+ > printf 'push '; hg -R child-push tip --template '{node}\n'
+ > hg -R child-push -q push > push.out 2>&1 &
+ >
+ > # wait for hook to create the notify file
+ > i=$maxwait
+ > while [ ! -f notify -a $i != 0 ]; do
+ > sleep 1
+ > i=`expr $i - 1`
+ > done
+ >
+ > # run pull
+ > hg -R child-pull -q pull
+ > rc=$?
+ >
+ > # tell hook to finish; notify should exist.
+ > rm notify
+ > wait
+ >
+ > cat push.out
+ > printf 'pull '; hg -R child-pull tip --template '{node}\n'
+ > return $rc
+ > }
+
+python hook
+
+ $ cat <<EOF > reject.py
+ > import os, time
+ > from mercurial import ui, localrepo
+ > def rejecthook(ui, repo, hooktype, node, **opts):
+ > ui.write('hook %s\\n' % repo['tip'].hex())
+ > # create the notify file so caller knows we're running
+ > fpath = os.path.join('$d', 'notify')
+ > f = open(fpath, 'w')
+ > f.close()
+ > # wait for ack - caller should delete the notify file
+ > i = $maxwait
+ > while os.path.exists(fpath) and i > 0:
+ > time.sleep(1)
+ > i -= 1
+ > return True # reject the changesets
+ > EOF
+
+external hook
+
+ $ cat <<EOF > reject.sh
+ > #! /bin/sh
+ > printf 'hook '; hg tip --template '{node}\\n'
+ > # create the notify file so caller knows we're running
+ > fpath=$d/notify
+ > touch \$fpath
+ > # wait for ack - caller should delete the notify file
+ > i=$maxwait
+ > while [ -f \$fpath -a \$i != 0 ]; do
+ > sleep 1
+ > i=\`expr \$i - 1\`
+ > done
+ > exit 1 # reject the changesets
+ > EOF
+ $ chmod +x reject.sh
+
+create repos
+
+ $ hg init parent
+ $ hg clone -q parent child-push
+ $ hg clone -q parent child-pull
+ $ echo a > child-push/a
+ $ hg -R child-push add child-push/a
+ $ hg -R child-push commit -m a -d '1000000 0'
+
+test python hook
+
+ $ cat <<EOF > parent/.hg/hgrc
+ > [extensions]
+ > reject = $d/reject.py
+ > [hooks]
+ > pretxnchangegroup = python:reject.rejecthook
+ > EOF
+
+ $ dotest
+ push 29b62aeb769fdf78d8d9c5f28b017f76d7ef824b
+ hook 29b62aeb769fdf78d8d9c5f28b017f76d7ef824b
+ transaction abort!
+ rollback completed
+ abort: pretxnchangegroup hook failed
+ pull 0000000000000000000000000000000000000000
+
+test external hook
+
+ $ cat <<EOF > parent/.hg/hgrc
+ > [hooks]
+ > pretxnchangegroup = $d/reject.sh
+ > EOF
+
+ $ dotest
+ push 29b62aeb769fdf78d8d9c5f28b017f76d7ef824b
+ hook 29b62aeb769fdf78d8d9c5f28b017f76d7ef824b
+ transaction abort!
+ rollback completed
+ abort: pretxnchangegroup hook exited with status 1
+ pull 0000000000000000000000000000000000000000