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# Authors: Petr Viktorin <pviktori@redhat.com>
#
# Copyright (C) 2012 Red Hat
# see file 'COPYING' for use and warranty information
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
#
import sys
import contextlib
import StringIO
from nose.tools import assert_raises # pylint: disable=E0611
from ipalib import api, errors
from ipalib.plugins.user import user_add
class CLITestContext(object):
"""Context manager that replaces stdout & stderr, and catches SystemExit
Whatever was printed to the streams is available in ``stdout`` and
``stderr`` attrributes once the with statement finishes.
When exception is given, asserts that exception is raised. The exception
will be available in the ``exception`` attribute.
"""
def __init__(self, exception=None):
self.exception = exception
def __enter__(self):
self.old_streams = sys.stdout, sys.stderr
self.stdout_fileobj = sys.stdout = StringIO.StringIO()
self.stderr_fileobj = sys.stderr = StringIO.StringIO()
return self
def __exit__(self, exc_type, exc_value, traceback):
sys.stdout, sys.stderr = self.old_streams
self.stdout = self.stdout_fileobj.getvalue()
self.stderr = self.stderr_fileobj.getvalue()
self.stdout_fileobj.close()
self.stderr_fileobj.close()
if self.exception:
assert isinstance(exc_value, self.exception), exc_value
self.exception = exc_value
return True
def test_ipa_help():
"""Test that `ipa help` only writes to stdout"""
with CLITestContext() as ctx:
return_value = api.Backend.cli.run(['help'])
assert return_value == 0
assert ctx.stderr == ''
def test_ipa_without_arguments():
"""Test that `ipa` errors out, and prints the help to stderr"""
with CLITestContext(exception=SystemExit) as ctx:
api.Backend.cli.run([])
assert ctx.exception.code == 2
assert ctx.stdout == ''
assert 'Error: Command not specified' in ctx.stderr
with CLITestContext() as help_ctx:
api.Backend.cli.run(['help'])
assert help_ctx.stdout in ctx.stderr
def test_bare_topic():
"""Test that `ipa user` errors out, and prints the help to stderr
This is because `user` is a topic, not a command, so `ipa user` doesn't
match our usage string. The help should be accessed using `ipa help user`.
"""
with CLITestContext(exception=errors.CommandError) as ctx:
api.Backend.cli.run(['user'])
assert ctx.exception.name == 'user'
assert ctx.stdout == ''
with CLITestContext() as help_ctx:
return_value = api.Backend.cli.run(['help', 'user'])
assert return_value == 0
assert help_ctx.stdout in ctx.stderr
def test_command_help():
"""Test that `help user-add` & `user-add -h` are equivalent and contain doc
"""
with CLITestContext() as help_ctx:
return_value = api.Backend.cli.run(['help', 'user-add'])
assert return_value == 0
assert help_ctx.stderr == ''
with CLITestContext(exception=SystemExit) as h_ctx:
api.Backend.cli.run(['user-add', '-h'])
assert h_ctx.exception.code == 0
assert h_ctx.stderr == ''
assert h_ctx.stdout == help_ctx.stdout
assert unicode(user_add.__doc__) in help_ctx.stdout
def test_ambiguous_command_or_topic():
"""Test that `help ping` & `ping -h` are NOT equivalent
One is a topic, the other is a command
"""
with CLITestContext() as help_ctx:
return_value = api.Backend.cli.run(['help', 'ping'])
assert return_value == 0
assert help_ctx.stderr == ''
with CLITestContext(exception=SystemExit) as h_ctx:
api.Backend.cli.run(['ping', '-h'])
assert h_ctx.exception.code == 0
assert h_ctx.stderr == ''
assert h_ctx.stdout != help_ctx.stdout
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