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# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import argparse
import functools
from cliff import command
from cliff.tests import base
class TestCommand(command.Command):
"""Description of command.
"""
def get_parser(self, prog_name):
parser = super(TestCommand, self).get_parser(prog_name)
parser.add_argument(
'long_help_argument',
help="Create a NIC on the server.\n"
"Specify option multiple times to create multiple NICs. "
"Either net-id or port-id must be provided, but not both.\n"
"net-id: attach NIC to network with this UUID\n"
"port-id: attach NIC to port with this UUID\n"
"v4-fixed-ip: IPv4 fixed address for NIC (optional)\n"
"v6-fixed-ip: IPv6 fixed address for NIC (optional)\n"
"none: (v2.37+) no network is attached\n"
"auto: (v2.37+) the compute service will automatically "
"allocate a network.\n"
"Specifying a --nic of auto or none "
"cannot be used with any other --nic value.",
)
parser.add_argument(
'regular_help_argument',
help="The quick brown fox jumps "
"over the lazy dog.",
)
parser.add_argument(
'-z',
dest='zippy',
default='zippy-default',
help='defined in TestCommand and used in TestArgumentParser',
)
return parser
def take_action(self, parsed_args):
return 42
class TestCommandNoDocstring(command.Command):
def take_action(self, parsed_args):
return 42
class TestDescription(base.TestBase):
def test_get_description_docstring(self):
cmd = TestCommand(None, None)
desc = cmd.get_description()
assert desc == "Description of command.\n "
def test_get_description_attribute(self):
cmd = TestCommand(None, None)
# Artificially inject a value for _description to verify that it
# overrides the docstring.
cmd._description = 'this is not the default'
desc = cmd.get_description()
assert desc == 'this is not the default'
def test_get_description_default(self):
cmd = TestCommandNoDocstring(None, None)
desc = cmd.get_description()
assert desc == ''
class TestBasicValues(base.TestBase):
def test_get_parser(self):
cmd = TestCommand(None, None)
parser = cmd.get_parser('NAME')
assert parser.prog == 'NAME'
def test_get_name(self):
cmd = TestCommand(None, None, cmd_name='object action')
assert cmd.cmd_name == 'object action'
def test_run_return(self):
cmd = TestCommand(None, None, cmd_name='object action')
assert cmd.run(None) == 42
expected_help_message = """
long_help_argument Create a NIC on the server.
Specify option multiple times to create multiple NICs.
Either net-id or port-id must be provided, but not
both.
net-id: attach NIC to network with this UUID
port-id: attach NIC to port with this UUID
v4-fixed-ip: IPv4 fixed address for NIC (optional)
v6-fixed-ip: IPv6 fixed address for NIC (optional)
none: (v2.37+) no network is attached
auto: (v2.37+) the compute service will automatically
allocate a network.
Specifying a --nic of auto or none cannot be used with
any other --nic value.
regular_help_argument
The quick brown fox jumps over the lazy dog.
"""
class TestHelp(base.TestBase):
def test_smart_help_formatter(self):
cmd = TestCommand(None, None)
parser = cmd.get_parser('NAME')
# Set up the formatter to always use a width=80 so that the
# terminal width of the developer's system does not cause the
# test to fail. Trying to mock os.environ failed, but there is
# an arg to HelpFormatter to set the width
# explicitly. Unfortunately, there is no way to do that
# through the parser, so we have to replace the parser's
# formatter_class attribute with a partial() that passes width
# to the original class.
parser.formatter_class = functools.partial(
parser.formatter_class,
width=78,
)
self.assertIn(expected_help_message, parser.format_help())
class TestArgumentParser(base.TestBase):
def test_option_name_collision(self):
cmd = TestCommand(None, None)
parser = cmd.get_parser('NAME')
# We should have an exception registering an option with a
# name that already exists because we configure the argument
# parser to ignore conflicts but this option has no other name
# to be used.
self.assertRaises(
argparse.ArgumentError,
parser.add_argument,
'-z',
)
def test_option_name_collision_with_alias(self):
cmd = TestCommand(None, None)
parser = cmd.get_parser('NAME')
# We not should have an exception registering an option with a
# name that already exists because we configure the argument
# parser to ignore conflicts and this option can be added as
# --zero even if the -z is ignored.
parser.add_argument('-z', '--zero')
def test_resolve_option_with_name_collision(self):
cmd = TestCommand(None, None)
parser = cmd.get_parser('NAME')
parser.add_argument(
'-z', '--zero',
dest='zero',
default='zero-default',
)
args = parser.parse_args(['-z', 'foo', 'a', 'b'])
self.assertEqual(args.zippy, 'foo')
self.assertEqual(args.zero, 'zero-default')
def test_with_conflict_handler(self):
cmd = TestCommand(None, None)
cmd.conflict_handler = 'resolve'
parser = cmd.get_parser('NAME')
self.assertEqual(parser.conflict_handler, 'resolve')
def test_raise_conflict_argument_error(self):
cmd = TestCommand(None, None)
parser = cmd.get_parser('NAME')
parser.add_argument(
'-f', '--foo',
dest='foo',
default='foo',
)
self.assertRaises(
argparse.ArgumentError,
parser.add_argument,
'-f',
)
def test_resolve_conflict_argument(self):
cmd = TestCommand(None, None)
cmd.conflict_handler = 'resolve'
parser = cmd.get_parser('NAME')
parser.add_argument(
'-f', '--foo',
dest='foo',
default='foo',
)
parser.add_argument(
'-f', '--foo',
dest='foo',
default='bar',
)
args = parser.parse_args(['a', 'b'])
self.assertEqual(args.foo, 'bar')
def test_wrong_conflict_handler(self):
cmd = TestCommand(None, None)
cmd.conflict_handler = 'wrong'
self.assertRaises(
ValueError,
cmd.get_parser,
'NAME',
)
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