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# Copyright 2011 Canonical Ltd.
#
# This file is part of u1db.
#
# u1db is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3
# as published by the Free Software Foundation.
#
# u1db 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with u1db. If not, see <http://www.gnu.org/licenses/>.
import cStringIO
import argparse
from u1db import (
tests,
)
from u1db.commandline import (
command,
)
class MyTestCommand(command.Command):
"""Help String"""
name = 'mycmd'
@classmethod
def _populate_subparser(cls, parser):
parser.add_argument('foo')
parser.add_argument('--bar', dest='nbar', type=int)
def run(self, foo, nbar):
self.stdout.write('foo: %s nbar: %d' % (foo, nbar))
return 0
def make_stdin_out_err():
return cStringIO.StringIO(), cStringIO.StringIO(), cStringIO.StringIO()
class TestCommandGroup(tests.TestCase):
def trap_system_exit(self, func, *args, **kwargs):
try:
return func(*args, **kwargs)
except SystemExit, e:
self.fail('Got SystemExit trying to run: %s' % (func,))
def parse_args(self, parser, args):
return self.trap_system_exit(parser.parse_args, args)
def test_register(self):
group = command.CommandGroup()
self.assertEqual({}, group.commands)
group.register(MyTestCommand)
self.assertEqual({'mycmd': MyTestCommand},
group.commands)
def test_make_argparser(self):
group = command.CommandGroup(description='test-foo')
parser = group.make_argparser()
self.assertIsInstance(parser, argparse.ArgumentParser)
def test_make_argparser_with_command(self):
group = command.CommandGroup(description='test-foo')
group.register(MyTestCommand)
parser = group.make_argparser()
args = self.parse_args(parser, ['mycmd', 'foozizle', '--bar=10'])
self.assertEqual('foozizle', args.foo)
self.assertEqual(10, args.nbar)
self.assertEqual(MyTestCommand, args.subcommand)
def test_run_argv(self):
group = command.CommandGroup()
group.register(MyTestCommand)
stdin, stdout, stderr = make_stdin_out_err()
ret = self.trap_system_exit(group.run_argv,
['mycmd', 'foozizle', '--bar=10'],
stdin, stdout, stderr)
self.assertEqual(0, ret)
class TestCommand(tests.TestCase):
def make_command(self):
stdin, stdout, stderr = make_stdin_out_err()
return command.Command(stdin, stdout, stderr)
def test__init__(self):
cmd = self.make_command()
self.assertIsNot(None, cmd.stdin)
self.assertIsNot(None, cmd.stdout)
self.assertIsNot(None, cmd.stderr)
def test_run_args(self):
stdin, stdout, stderr = make_stdin_out_err()
cmd = MyTestCommand(stdin, stdout, stderr)
res = cmd.run(foo='foozizle', nbar=10)
self.assertEqual('foo: foozizle nbar: 10', stdout.getvalue())
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