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# Authors:
# Jason Gerard DeRose <jderose@redhat.com>
#
# Copyright (C) 2008 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; version 2 only
#
# 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
"""
Unit tests for `ipalib.plugable` module.
"""
from tstutil import raises, no_set, no_del, read_only
from ipalib import plugable, errors
def test_to_cli():
f = plugable.to_cli
assert f('initialize') == 'initialize'
assert f('find_everything') == 'find-everything'
assert f('user__add') == 'user.add'
assert f('meta_service__do_something') == 'meta-service.do-something'
def test_from_cli():
f = plugable.from_cli
assert f('initialize') == 'initialize'
assert f('find-everything') == 'find_everything'
assert f('user.add') == 'user__add'
assert f('meta-service.do-something') == 'meta_service__do_something'
def test_Plugin():
p = plugable.Plugin()
assert p.name == 'Plugin'
assert repr(p) == '%s.Plugin()' % plugable.__name__
class some_plugin(plugable.Plugin):
pass
p = some_plugin()
assert p.name == 'some_plugin'
assert repr(p) == '%s.some_plugin()' % __name__
def test_ReadOnly():
obj = plugable.ReadOnly()
names = ['not_an_attribute', 'an_attribute']
for name in names:
no_set(obj, name)
no_del(obj, name)
class some_ro_class(plugable.ReadOnly):
def __init__(self):
object.__setattr__(self, 'an_attribute', 'Hello world!')
obj = some_ro_class()
for name in names:
no_set(obj, name)
no_del(obj, name)
assert read_only(obj, 'an_attribute') == 'Hello world!'
def test_Proxy():
assert issubclass(plugable.Proxy, plugable.ReadOnly)
class CommandProxy(plugable.Proxy):
__slots__ = (
'validate',
'__call__',
)
class do_something(object):
def __repr__(self):
return '<my repr>'
def __call__(self, arg):
return arg + 1
def validate(self, arg):
return arg + 2
def not_public(self, arg):
return arg + 3
# Test basic Proxy functionality
i = do_something()
p = CommandProxy(i)
assert '__dict__' not in dir(p)
assert p.name == 'do_something'
assert str(p) == 'do-something'
assert repr(p) == 'CommandProxy(<my repr>)'
assert p(1) == 2
assert p.validate(1) == 3
# Test that proxy_name can be overriden:
i = do_something()
p = CommandProxy(i, proxy_name='user__add')
assert '__dict__' not in dir(p)
assert p.name == 'user__add'
assert str(p) == 'user.add'
assert repr(p) == 'CommandProxy(<my repr>)'
assert p(1) == 2
assert p.validate(1) == 3
# Test that attributes not listed in __slots__ are not present:
name = 'not_public'
i = do_something()
p = CommandProxy(i)
assert getattr(i, name)(1) == 4
raises(AttributeError, getattr, p, name)
# Test that attributes are read-only:
name = 'validate'
i = do_something()
p = CommandProxy(i)
assert getattr(p, name)(1) == 3
assert read_only(p, name)(1) == 3
def test_Registrar():
class Base1(object):
pass
class Base2(object):
pass
class Base3(object):
pass
class plugin1(Base1):
pass
class plugin2(Base2):
pass
class plugin3(Base3):
pass
# Test creation of Registrar:
r = plugable.Registrar(Base1, Base2)
# Test __hasitem__, __getitem__:
for base in [Base1, Base2]:
assert base in r
assert base.__name__ in r
assert r[base] == {}
assert r[base.__name__] == {}
# Check that TypeError is raised trying to register something that isn't
# a class:
raises(TypeError, r, plugin1())
# Check that SubclassError is raised trying to register a class that is
# not a subclass of an allowed base:
raises(errors.SubclassError, r, plugin3)
# Check that registration works
r(plugin1)
sub_d = r['Base1']
assert len(sub_d) == 1
assert sub_d['plugin1'] is plugin1
# Check that a copy is returned
assert sub_d is not r['Base1']
assert sub_d == r['Base1']
# Check that DuplicateError is raised trying to register exact class
# again:
raises(errors.DuplicateError, r, plugin1)
# Check that OverrideError is raised trying to register class with same
# name and same base:
orig1 = plugin1
class base1_extended(Base1):
pass
class plugin1(base1_extended):
pass
raises(errors.OverrideError, r, plugin1)
# Check that overriding works
r(plugin1, override=True)
sub_d = r['Base1']
assert len(sub_d) == 1
assert sub_d['plugin1'] is plugin1
assert sub_d['plugin1'] is not orig1
# Check that MissingOverrideError is raised trying to override a name
# not yet registerd:
raises(errors.MissingOverrideError, r, plugin2, override=True)
# Check that additional plugin can be registered:
r(plugin2)
sub_d = r['Base2']
assert len(sub_d) == 1
assert sub_d['plugin2'] is plugin2
# Setup to test __iter__:
class plugin1a(Base1):
pass
r(plugin1a)
class plugin1b(Base1):
pass
r(plugin1b)
class plugin2a(Base2):
pass
r(plugin2a)
class plugin2b(Base2):
pass
r(plugin2b)
m = {
'Base1': set([plugin1, plugin1a, plugin1b]),
'Base2': set([plugin2, plugin2a, plugin2b]),
}
# Now test __iter__:
for (base, plugins) in r:
assert base in [Base1, Base2]
assert set(plugins) == m[base.__name__]
assert len(list(r)) == 2
# Again test __hasitem__, __getitem__:
for base in [Base1, Base2]:
assert base in r
assert base.__name__ in r
d = dict((p.__name__, p) for p in m[base.__name__])
assert len(d) == 3
assert r[base] == d
assert r[base.__name__] == d
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