# 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.public` module.
"""

from tstutil import raises, getitem, no_set, no_del, read_only, ClassChecker
from ipalib import public, plugable, errors


def test_RULE_FLAG():
    assert public.RULE_FLAG == 'validation_rule'


def test_rule():
    flag = public.RULE_FLAG
    rule = public.rule
    def my_func():
        pass
    assert not hasattr(my_func, flag)
    rule(my_func)
    assert getattr(my_func, flag) is True
    @rule
    def my_func2():
        pass
    assert getattr(my_func2, flag) is True


def test_is_rule():
    is_rule = public.is_rule
    flag = public.RULE_FLAG

    class no_call(object):
        def __init__(self, value):
            if value is not None:
                assert value in (True, False)
                setattr(self, flag, value)

    class call(no_call):
        def __call__(self):
            pass

    assert is_rule(call(True))
    assert not is_rule(no_call(True))
    assert not is_rule(call(False))
    assert not is_rule(call(None))


class test_option(ClassChecker):
    """
    Tests the option class.
    """
    _cls = public.option

    def get_subcls(self):
        rule = public.rule
        class int_opt(self.cls):
            type = int
            @rule
            def rule_0(self, value):
                if value == 0:
                    return 'cannot be 0'
            @rule
            def rule_1(self, value):
                if value == 1:
                    return 'cannot be 1'
            @rule
            def rule_2(self, value):
                if value == 2:
                    return 'cannot be 2'
        return int_opt

    def test_class(self):
        """
        Perform some tests on the class (not an instance).
        """
        assert self.cls.__bases__ == (plugable.Plugin,)
        assert type(self.cls.rules) is property

    def test_normalize(self):
        """
        Tests the `normalize` method.
        """
        assert 'normalize' in self.cls.__public__
        o = self.subcls()
        # Test with values that can't be converted:
        nope = (
            '7.0'
            'whatever',
            object,
            None,
        )
        for val in nope:
            e = raises(errors.NormalizationError, o.normalize, val)
            assert isinstance(e, errors.ValidationError)
            assert e.name == 'int_opt'
            assert e.value == val
            assert e.error == "not <type 'int'>"
            assert e.type is int
        # Test with values that can be converted:
        okay = (
            7,
            7.0,
            7.2,
            7L,
            '7',
            ' 7 ',
        )
        for val in okay:
            assert o.normalize(val) == 7

    def test_validate(self):
        """
        Tests the `validate` method.
        """
        assert 'validate' in self.cls.__public__
        o = self.subcls()
        o.validate(9)
        for i in xrange(3):
            e = raises(errors.RuleError, o.validate, i)
            assert e.error == 'cannot be %d' % i
            assert e.value == i

    def test_rules(self):
        """
        Tests the `rules` property.
        """
        o = self.subcls()
        assert len(o.rules) == 3
        def get_rule(i):
            return getattr(o, 'rule_%d' % i)
        rules = tuple(get_rule(i) for i in xrange(3))
        assert o.rules == rules

    def test_default(self):
        """
        Tests the `default` method.
        """
        assert 'default' in self.cls.__public__
        assert self.cls().default() is None


class test_cmd(ClassChecker):
    """
    Tests the `cmd` class.
    """
    _cls = public.cmd

    def get_subcls(self):
        class my_option(public.option):
            def normalize(self, value):
                return super(my_option, self).normalize(value).lower()
            @public.rule
            def my_rule(self, value):
                if value != self.name:
                    return 'must equal %r' % self.name
            def default(self, **kw):
                return kw['default_from']

        class option0(my_option):
            pass
        class option1(my_option):
            pass
        class example(self.cls):
            option_classes = (option0, option1)
        return example

    def test_class(self):
        assert self.cls.__bases__ == (plugable.Plugin,)
        assert type(self.cls.options) == property

    def test_get_options(self):
        """
        Tests the `get_options` method.
        """
        assert list(self.cls().get_options()) == []
        sub = self.subcls()
        for (i, proxy) in enumerate(sub.get_options()):
            assert isinstance(proxy, plugable.Proxy)
            assert read_only(proxy, 'name') == 'option%d' % i
            assert proxy.implements(public.option)
        assert i == 1

    def test_options(self):
        """
        Tests the `options` property.
        """
        assert 'options' in self.cls.__public__ # Public
        sub = self.subcls()
        options = sub.options
        assert type(options) == plugable.NameSpace
        assert len(options) == 2
        for name in ('option0', 'option1'):
            assert name in options
            proxy = options[name]
            assert getattr(options, name) is proxy
            assert isinstance(proxy, plugable.Proxy)
            assert proxy.name == name

    def test_normalize(self):
        """
        Tests the `normalize` method.
        """
        assert 'normalize' in self.cls.__public__ # Public
        kw = dict(
            option0='OPTION0',
            option1='OPTION1',
            option2='option2',
        )
        norm = dict((k, v.lower()) for (k, v) in kw.items())
        sub = self.subcls()
        assert sub.normalize(**kw) == norm

    def test_default(self):
        """
        Tests the `default` method.
        """
        assert 'default' in self.cls.__public__ # Public
        no_fill = dict(
            option0='value0',
            option1='value1',
            whatever='hello world',
        )
        fill = dict(
            default_from='the default',
        )
        default = dict(
            option0='the default',
            option1='the default',
        )
        sub = self.subcls()
        assert sub.default(**no_fill) == {}
        assert sub.default(**fill) == default

    def test_validate(self):
        """
        Tests the `validate` method.
        """
        assert 'validate' in self.cls.__public__ # Public
        sub = self.subcls()
        for name in ('option0', 'option1'):
            okay = {
                name: name,
                'another_option': 'some value',
            }
            fail = {
                name: 'whatever',
                'another_option': 'some value',
            }
            sub.validate(**okay)
            raises(errors.RuleError, sub.validate, **fail)

    def test_execute(self):
        """
        Tests the `execute` method.
        """
        assert 'execute' in self.cls.__public__ # Public



def test_obj():
    cls = public.obj
    assert issubclass(cls, plugable.Plugin)



def test_attr():
    cls = public.attr
    assert issubclass(cls, plugable.Plugin)

    class api(object):
        obj = dict(user='the user obj')

    class user_add(cls):
        pass

    i = user_add()
    assert read_only(i, 'obj_name') == 'user'
    assert read_only(i, 'attr_name') == 'add'
    assert read_only(i, 'obj') is None
    i.finalize(api)
    assert read_only(i, 'api') is api
    assert read_only(i, 'obj') == 'the user obj'

    class example_prop0(cls):
        pass
    o = example_prop0()


class test_mthd(ClassChecker):
    """
    Tests the `mthd` class.
    """
    _cls = public.mthd

    def test_class(self):
        assert self.cls.__bases__ == (public.attr, public.cmd)
        assert self.cls.implements(public.cmd)

    def get_subcls(self):
        class option0(public.option):
            pass
        class option1(public.option):
            pass
        class example_prop0(public.prop):
            pass
        class example_prop1(public.prop):
            pass
        class example_obj(object):
            __prop = None
            def __get_prop(self):
                if self.__prop is None:
                    self.__prop = (
                        plugable.Proxy(public.prop, example_prop0(), 'attr_name'),
                        plugable.Proxy(public.prop, example_prop1(),  'attr_name'),
                    )
                return self.__prop
            prop = property(__get_prop)
        class noun_verb(self.cls):
            option_classes = (option0, option1)
            obj = example_obj()
        return noun_verb

    def test_get_options(self):
        """
        Tests the `get_options` method.
        """
        sub = self.subcls()
        names = ('option0', 'option1', 'prop0', 'prop1')
        proxies = tuple(sub.get_options())
        assert len(proxies) == 4
        for (i, proxy) in enumerate(proxies):
            assert proxy.name == names[i]
            assert isinstance(proxy, plugable.Proxy)
            assert proxy.implements(public.option)


class test_prop(ClassChecker):
    _cls = public.prop

    def test_class(self):
        assert self.cls.__bases__ == (public.attr, public.option)
        assert self.cls.implements(public.option)


def test_PublicAPI():
    cls = public.PublicAPI
    assert issubclass(cls, plugable.API)

    api = cls()

    class cmd1(public.cmd):
        pass
    api.register(cmd1)

    class cmd2(public.cmd):
        pass
    api.register(cmd2)

    api()