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# Copyright (C) 2005 by Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""Tests for plugins"""
# XXX: There are no plugin tests at the moment because the plugin module
# affects the global state of the process. See bzrlib/plugins.py for more
# comments.
import os
from StringIO import StringIO
import bzrlib.plugin
import bzrlib.plugins
import bzrlib.commands
import bzrlib.help
from bzrlib.tests import TestCaseInTempDir
from bzrlib.osutils import pathjoin, abspath
class PluginTest(TestCaseInTempDir):
"""Create an external plugin and test loading."""
# def test_plugin_loading(self):
# orig_help = self.run_bzr_captured('bzr help commands')[0]
# os.mkdir('plugin_test')
# f = open(pathjoin('plugin_test', 'myplug.py'), 'wt')
# f.write(PLUGIN_TEXT)
# f.close()
# newhelp = self.run_bzr_captured('bzr help commands')[0]
# assert newhelp.startswith('You have been overridden\n')
# # We added a line, but the rest should work
# assert newhelp[25:] == help
#
# assert backtick('bzr commit -m test') == "I'm sorry dave, you can't do that\n"
#
# shutil.rmtree('plugin_test')
#
# os.environ['BZRPLUGINPATH'] = abspath('plugin_test')
# help = backtick('bzr help commands')
# assert help.find('myplug') != -1
# assert help.find('Just a simple test plugin.') != -1
# assert backtick('bzr myplug') == 'Hello from my plugin\n'
# assert backtick('bzr mplg') == 'Hello from my plugin\n'
# f = open(pathjoin('plugin_test', 'override.py'), 'wb')
# f.write("""import bzrlib, bzrlib.commands
# class cmd_commit(bzrlib.commands.cmd_commit):
# '''Commit changes into a new revision.'''
# def run(self, *args, **kwargs):
# print "I'm sorry dave, you can't do that"
# class cmd_help(bzrlib.commands.cmd_help):
# '''Show help on a command or other topic.'''
# def run(self, *args, **kwargs):
# print "You have been overridden"
# bzrlib.commands.cmd_help.run(self, *args, **kwargs)
# """
PLUGIN_TEXT = """\
import bzrlib.commands
class cmd_myplug(bzrlib.commands.Command):
'''Just a simple test plugin.'''
aliases = ['mplg']
def run(self):
print 'Hello from my plugin'
"""
# TODO: Write a test for plugin decoration of commands.
class TestOneNamedPluginOnly(TestCaseInTempDir):
activeattributes = {}
def test_plugins_with_the_same_name_are_not_loaded(self):
# This test tests that having two plugins in different
# directories does not result in both being loaded.
# get a file name we can use which is also a valid attribute
# for accessing in activeattributes. - we cannot give import parameters.
tempattribute = "0"
self.failIf(tempattribute in self.activeattributes)
# set a place for the plugins to record their loading, and at the same
# time validate that the location the plugins should record to is
# valid and correct.
bzrlib.tests.test_plugins.TestOneNamedPluginOnly.activeattributes \
[tempattribute] = []
self.failUnless(tempattribute in self.activeattributes)
# create two plugin directories
os.mkdir('first')
os.mkdir('second')
# write a plugin that will record when its loaded in the
# tempattribute list.
template = ("from bzrlib.tests.test_plugins import TestOneNamedPluginOnly\n"
"TestOneNamedPluginOnly.activeattributes[%r].append('%s')\n")
print >> file(os.path.join('first', 'plugin.py'), 'w'), template % (tempattribute, 'first')
print >> file(os.path.join('second', 'plugin.py'), 'w'), template % (tempattribute, 'second')
try:
bzrlib.plugin.load_from_dirs(['first', 'second'])
self.assertEqual(['first'], self.activeattributes[tempattribute])
finally:
# remove the plugin 'plugin'
del self.activeattributes[tempattribute]
if getattr(bzrlib.plugins, 'plugin', None):
del bzrlib.plugins.plugin
self.failIf(getattr(bzrlib.plugins, 'plugin', None))
class TestAllPlugins(TestCaseInTempDir):
def test_plugin_appears_in_all_plugins(self):
# This test tests a new plugin appears in bzrlib.plugin.all_plugins().
# check the plugin is not loaded already
self.failIf(getattr(bzrlib.plugins, 'plugin', None))
# write a plugin that _cannot_ fail to load.
print >> file('plugin.py', 'w'), ""
try:
bzrlib.plugin.load_from_dirs(['.'])
self.failUnless('plugin' in bzrlib.plugin.all_plugins())
self.failUnless(getattr(bzrlib.plugins, 'plugin', None))
self.assertEqual(bzrlib.plugin.all_plugins()['plugin'],
bzrlib.plugins.plugin)
finally:
# remove the plugin 'plugin'
if getattr(bzrlib.plugins, 'plugin', None):
del bzrlib.plugins.plugin
self.failIf(getattr(bzrlib.plugins, 'plugin', None))
class TestPluginHelp(TestCaseInTempDir):
def split_help_commands(self):
help = {}
current = None
for line in self.capture('help commands').splitlines():
if not line.startswith(' '):
current = line.split()[0]
help[current] = help.get(current, '') + line
return help
def test_plugin_help_builtins_unaffected(self):
# Check we don't get false positives
help_commands = self.split_help_commands()
for cmd_name in bzrlib.commands.builtin_command_names():
if cmd_name in bzrlib.commands.plugin_command_names():
continue
help = StringIO()
try:
bzrlib.help.help_on_command(cmd_name, help)
except NotImplementedError:
# some commands have no help
pass
else:
help.seek(0)
self.assertNotContainsRe(help.read(), 'From plugin "[^"]*"')
if help in help_commands.keys():
# some commands are hidden
help = help_commands[cmd_name]
self.assertNotContainsRe(help, 'From plugin "[^"]*"')
def test_plugin_help_shows_plugin(self):
# Create a test plugin
os.mkdir('plugin_test')
f = open(pathjoin('plugin_test', 'myplug.py'), 'w')
f.write(PLUGIN_TEXT)
f.close()
try:
# Check its help
bzrlib.plugin.load_from_dirs(['plugin_test'])
bzrlib.commands.register_command( bzrlib.plugins.myplug.cmd_myplug)
help = self.capture('help myplug')
self.assertContainsRe(help, 'From plugin "myplug"')
help = self.split_help_commands()['myplug']
self.assertContainsRe(help, '\[myplug\]')
finally:
# remove the plugin 'plugin'
if getattr(bzrlib.plugins, 'plugin', None):
del bzrlib.plugins.plugin
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