##############################################################################
#
# Copyright (c) 2001, 2002 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
""" zope.interface.verify unit tests
"""
import unittest


class Test_verifyClass(unittest.TestCase):

    def _callFUT(self, iface, klass):
        from zope.interface.verify import verifyClass
        return verifyClass(iface, klass)

    def test_class_doesnt_implement(self):
        from zope.interface import Interface
        from zope.interface.exceptions import DoesNotImplement

        class ICurrent(Interface):
            pass

        class Current(object):
            pass

        self.assertRaises(DoesNotImplement, self._callFUT, ICurrent, Current)

    def test_class_doesnt_implement_but_classImplements_later(self):
        from zope.interface import Interface
        from zope.interface import classImplements

        class ICurrent(Interface):
            pass

        class Current(object):
            pass

        classImplements(Current, ICurrent)

        self._callFUT(ICurrent, Current)

    def test_class_doesnt_have_required_method_simple(self):
        from zope.interface import Interface
        from zope.interface import implementer
        from zope.interface.exceptions import BrokenImplementation

        class ICurrent(Interface):
            def method(): pass

        @implementer(ICurrent)
        class Current(object):
            pass

        self.assertRaises(BrokenImplementation,
                          self._callFUT, ICurrent, Current)

    def test_class_has_required_method_simple(self):
        from zope.interface import Interface
        from zope.interface import implementer

        class ICurrent(Interface):
            def method(): pass

        @implementer(ICurrent)
        class Current(object):

            def method(self):
                raise NotImplementedError()

        self._callFUT(ICurrent, Current)

    def test_class_doesnt_have_required_method_derived(self):
        from zope.interface import Interface
        from zope.interface import implementer
        from zope.interface.exceptions import BrokenImplementation

        class IBase(Interface):
            def method():
                pass

        class IDerived(IBase):
            pass

        @implementer(IDerived)
        class Current(object):
            pass

        self.assertRaises(BrokenImplementation,
                          self._callFUT, IDerived, Current)

    def test_class_has_required_method_derived(self):
        from zope.interface import Interface
        from zope.interface import implementer

        class IBase(Interface):
            def method():
                pass

        class IDerived(IBase):
            pass

        @implementer(IDerived)
        class Current(object):

            def method(self):
                raise NotImplementedError()

        self._callFUT(IDerived, Current)

    def test_method_takes_wrong_arg_names_but_OK(self):
        # We no longer require names to match.
        from zope.interface import Interface
        from zope.interface import implementer

        class ICurrent(Interface):

            def method(a):
                pass

        @implementer(ICurrent)
        class Current(object):

            def method(self, b):
                raise NotImplementedError()

        self._callFUT(ICurrent, Current)

    def test_method_takes_not_enough_args(self):
        from zope.interface import Interface
        from zope.interface import implementer
        from zope.interface.exceptions import BrokenMethodImplementation

        class ICurrent(Interface):

            def method(a):
                pass

        @implementer(ICurrent)
        class Current(object):

            def method(self):
                raise NotImplementedError()

        self.assertRaises(BrokenMethodImplementation,
                          self._callFUT, ICurrent, Current)

    def test_method_doesnt_take_required_starargs(self):
        from zope.interface import Interface
        from zope.interface import implementer
        from zope.interface.exceptions import BrokenMethodImplementation

        class ICurrent(Interface):

            def method(*args):
                pass

        @implementer(ICurrent)
        class Current(object):

            def method(self):
                raise NotImplementedError()

        self.assertRaises(BrokenMethodImplementation,
                          self._callFUT, ICurrent, Current)

    def test_method_doesnt_take_required_only_kwargs(self):
        from zope.interface import Interface
        from zope.interface import implementer
        from zope.interface.exceptions import BrokenMethodImplementation

        class ICurrent(Interface):

            def method(**kw):
                pass

        @implementer(ICurrent)
        class Current(object):

            def method(self):
                raise NotImplementedError()

        self.assertRaises(BrokenMethodImplementation,
                          self._callFUT, ICurrent, Current)

    def test_method_takes_extra_arg(self):
        from zope.interface import Interface
        from zope.interface import implementer
        from zope.interface.exceptions import BrokenMethodImplementation

        class ICurrent(Interface):

            def method(a):
                pass

        @implementer(ICurrent)
        class Current(object):

            def method(self, a, b):
                raise NotImplementedError()

        self.assertRaises(BrokenMethodImplementation,
                          self._callFUT, ICurrent, Current)

    def test_method_takes_extra_arg_with_default(self):
        from zope.interface import Interface
        from zope.interface import implementer

        class ICurrent(Interface):

            def method(a):
                pass

        @implementer(ICurrent)
        class Current(object):

            def method(self, a, b=None):
                raise NotImplementedError()

        self._callFUT(ICurrent, Current)

    def test_method_takes_only_positional_args(self):
        from zope.interface import Interface
        from zope.interface import implementer

        class ICurrent(Interface):

            def method(a):
                pass

        @implementer(ICurrent)
        class Current(object):

            def method(self, *args):
                raise NotImplementedError()

        self._callFUT(ICurrent, Current)

    def test_method_takes_only_kwargs(self):
        from zope.interface import Interface
        from zope.interface import implementer
        from zope.interface.exceptions import BrokenMethodImplementation

        class ICurrent(Interface):

            def method(a):
                pass

        @implementer(ICurrent)
        class Current(object):

            def method(self, **kw):
                raise NotImplementedError()

        self.assertRaises(BrokenMethodImplementation,
                          self._callFUT, ICurrent, Current)

    def test_method_takes_extra_starargs(self):
        from zope.interface import Interface
        from zope.interface import implementer

        class ICurrent(Interface):

            def method(a):
                pass

        @implementer(ICurrent)
        class Current(object):

            def method(self, a, *args):
                raise NotImplementedError()

        self._callFUT(ICurrent, Current)

    def test_method_takes_extra_starargs_and_kwargs(self):
        from zope.interface import Interface
        from zope.interface import implementer

        class ICurrent(Interface):

            def method(a):
                pass

        @implementer(ICurrent)
        class Current(object):

            def method(self, a, *args, **kw):
                raise NotImplementedError()

        self._callFUT(ICurrent, Current)

    def test_method_doesnt_take_required_positional_and_starargs(self):
        from zope.interface import Interface
        from zope.interface import implementer
        from zope.interface.exceptions import BrokenMethodImplementation

        class ICurrent(Interface):

            def method(a, *args):
                pass

        @implementer(ICurrent)
        class Current(object):

            def method(self, a):
                raise NotImplementedError()

        self.assertRaises(BrokenMethodImplementation,
                          self._callFUT, ICurrent, Current)

    def test_method_takes_required_positional_and_starargs(self):
        from zope.interface import Interface
        from zope.interface import implementer

        class ICurrent(Interface):

            def method(a, *args):
                pass

        @implementer(ICurrent)
        class Current(object):

            def method(self, a, *args):
                raise NotImplementedError()

        self._callFUT(ICurrent, Current)

    def test_method_takes_only_starargs(self):
        from zope.interface import Interface
        from zope.interface import implementer

        class ICurrent(Interface):

            def method(a, *args):
                pass

        @implementer(ICurrent)