codereview: undo last night's rollback

Update version check from 1.4 to 1.9.  Suggest 2.0.

R=golang-dev, r, r
CC=golang-dev
https://golang.org/cl/5413046

doc/install.html

@@ -102,7 +102,7 @@ also need the <code>libc6-dev-i386</code> package.
 To perform the next step you must have Mercurial installed. (Check that you  have an <code>hg</code> command.) This suffices to install Mercurial on most systems:
 </p>
 <pre>
-sudo easy_install mercurial
+sudo easy_install mercurial==2.0
 </pre>
 (On Ubuntu/Debian, you might try <code>apt-get install python-setuptools
 python-dev build-essential</code> first. The Mercurial in your distribution's

lib/codereview/test.sh

+#!/bin/bash
+# Copyright 2011 The Go Authors.  All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+# Test the code review plugin.
+# Assumes a local Rietveld is running using the App Engine SDK
+# at http://localhost:7777/
+#
+# dev_appserver.py -p 7777 $HOME/pub/rietveld
+
+codereview_script=$(pwd)/codereview.py
+server=localhost:7777
+master=/tmp/go.test
+clone1=/tmp/go.test1
+clone2=/tmp/go.test2
+export HGEDITOR=true
+
+must() {
+	if ! "$@"; then
+		echo "$@" failed >&2
+		exit 1
+	fi
+}
+
+not() {
+	if "$@"; then
+		false
+	else
+		true
+	fi
+}
+
+status() {
+	echo '+++' "$@" >&2
+}
+
+firstcl() {
+	hg pending | sed 1q | tr -d ':'
+}
+
+# Initial setup.
+status Create repositories.
+rm -rf $master $clone1 $clone2
+mkdir $master
+cd $master
+must hg init .
+echo Initial state >file
+must hg add file
+must hg ci -m 'first commit' file
+must hg clone $master $clone1
+must hg clone $master $clone2
+
+echo "
+[ui]
+username=Grace R Emlin <gre@golang.org>
+[extensions]
+codereview=$codereview_script
+[codereview]
+server=$server
+" >>$clone1/.hg/hgrc
+cp $clone1/.hg/hgrc $clone2/.hg/hgrc
+
+status Codereview should be disabled.
+cd $clone1
+must hg status
+must not hg pending
+
+status Enabling code review.
+must mkdir lib lib/codereview
+must touch lib/codereview/codereview.cfg
+
+status Code review should work even without CONTRIBUTORS.
+must hg pending
+
+status Add CONTRIBUTORS.
+echo 'Grace R Emlin <gre@golang.org>' >CONTRIBUTORS
+must hg add lib/codereview/codereview.cfg CONTRIBUTORS
+
+status First submit.
+must hg submit -r gre@golang.org -m codereview \
+	lib/codereview/codereview.cfg CONTRIBUTORS
+
+status Should see change in other client.
+cd $clone2
+must hg pull -u
+must test -f lib/codereview/codereview.cfg
+must test -f CONTRIBUTORS
+
+test_clpatch() {
+	# The email address must be test@example.com to match
+	# the test code review server's default user.
+	# Clpatch will check.
+	
+	cd $clone1
+	# Tried to use UTF-8 here to test that, but dev_appserver.py crashes.  Ha ha.
+	if false; then
+		status Using UTF-8.
+		name="Grácè T Emlïn <test@example.com>"
+	else
+		status Using ASCII.
+		name="Grace T Emlin <test@example.com>"
+	fi
+	echo "$name" >>CONTRIBUTORS
+	cat .hg/hgrc | sed "s/Grace.*/$name/" >/tmp/x && mv /tmp/x .hg/hgrc
+	echo '
+Reviewer: gre@golang.org
+Description:
+	CONTRIBUTORS: add $name
+Files:
+	CONTRIBUTORS
+'	| must hg change -i
+	num=$(hg pending | sed 1q | tr -d :)
+	
+	status Patch CL.
+	cd $clone2
+	must hg clpatch $num
+	must [ "$num" = "$(firstcl)" ]
+	must hg submit $num
+	
+	status Issue should be open with no reviewers.
+	must curl http://$server/api/$num >/tmp/x
+	must not grep '"closed":true' /tmp/x
+	must grep '"reviewers":\[\]' /tmp/x
+	
+	status Sync should close issue.
+	cd $clone1
+	must hg sync
+	must curl http://$server/api/$num >/tmp/x
+	must grep '"closed":true' /tmp/x
+	must grep '"reviewers":\[\]' /tmp/x
+	must [ "$(firstcl)" = "" ]
+}
+
+test_reviewer() {
+	status Submit without reviewer should fail.
+	cd $clone1
+	echo dummy >dummy
+	must hg add dummy
+	echo '
+Description:
+	no reviewer
+Files:
+	dummy
+'	| must hg change -i
+	num=$(firstcl)
+	must not hg submit $num
+	must hg revert dummy
+	must rm dummy
+	must hg change -d $num
+}
+
+test_linearity() {
+	status Linearity of changes.
+	cd $clone1
+	echo file1 >file1
+	must hg add file1
+	echo '
+Reviewer: gre@golang.org
+Description: file1
+Files: file1
+	' | must hg change -i
+	must hg submit $(firstcl)
+	
+	cd $clone2
+	echo file2 >file2
+	must hg add file2
+	echo '
+Reviewer: gre@golang.org
+Description: file2
+Files: file2
+	' | must hg change -i
+	must not hg submit $(firstcl)
+	must hg sync
+	must hg submit $(firstcl)
+}
+
+test_restrict() {
+	status Cannot use hg ci.
+	cd $clone1
+	echo file1a >file1a
+	hg add file1a
+	must not hg ci -m commit file1a
+	must rm file1a
+	must hg revert file1a
+	
+	status Cannot use hg rollback.
+	must not hg rollback
+	
+	status Cannot use hg backout
+	must not hg backout -r -1
+}
+
+test_reviewer
+test_clpatch
+test_linearity
+test_restrict
+status ALL TESTS PASSED.