##############################################################################
#
# Copyright (c) 2003 Zope Corporation 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.
#
##############################################################################
"""Test of the Vocabulary and related support APIs.

$Id: test_vocabulary.py 27726 2004-09-30 23:00:04Z jim $
"""
import unittest

from zope.interface.verify import verifyObject
from zope.interface import Interface, implements

from zope.schema import interfaces
from zope.schema import vocabulary


class DummyRegistry(vocabulary.VocabularyRegistry):
    def get(self, object, name):
        v = SampleVocabulary()
        v.object = object
        v.name = name
        return v


class BaseTest(unittest.TestCase):
    # Clear the vocabulary and presentation registries on each side of
    # each test.

    def setUp(self):
        vocabulary._clear()

    def tearDown(self):
        vocabulary._clear()


class RegistryTests(BaseTest):
    """Tests of the simple vocabulary and presentation registries."""

    def test_setVocabularyRegistry(self):
        r = DummyRegistry()
        vocabulary.setVocabularyRegistry(r)
        self.assert_(vocabulary.getVocabularyRegistry() is r)

    def test_getVocabularyRegistry(self):
        r = vocabulary.getVocabularyRegistry()
        self.assert_(interfaces.IVocabularyRegistry.providedBy(r))

    # TODO: still need to test the default implementation

class SampleTerm(object):
    pass

class SampleVocabulary(object):
    implements(interfaces.IVocabulary)

    def __iter__(self):
        return iter([self.getTerm(x) for x in range(0, 10)])

    def __contains__(self, value):
        return 0 <= value < 10

    def __len__(self):
        return 10

    def getTerm(self, value):
        if value in self:
            t = SampleTerm()
            t.value = value
            t.double = 2 * value
            return t
        raise LookupError("no such value: %r" % value)


class SimpleVocabularyTests(unittest.TestCase):

    list_vocab = vocabulary.SimpleVocabulary.fromValues([1, 2, 3])
    items_vocab = vocabulary.SimpleVocabulary.fromItems(
        [('one', 1), ('two', 2), ('three', 3), ('fore!', 4)])

    def test_simple_term(self):
        t = vocabulary.SimpleTerm(1)
        verifyObject(interfaces.ITokenizedTerm, t)
        self.assertEqual(t.value, 1)
        self.assertEqual(t.token, "1")
        t = vocabulary.SimpleTerm(1, "One")
        verifyObject(interfaces.ITokenizedTerm, t)
        self.assertEqual(t.value, 1)
        self.assertEqual(t.token, "One")

    def test_order(self):
        value = 1
        for t in self.list_vocab:
            self.assertEqual(t.value, value)
            value += 1

        value = 1
        for t in self.items_vocab:
            self.assertEqual(t.value, value)
            value += 1

    def test_implementation(self):
        self.failUnless(verifyObject(interfaces.IVocabulary, self.list_vocab))
        self.failUnless(
            verifyObject(interfaces.IVocabularyTokenized, self.list_vocab))
        self.failUnless(verifyObject(interfaces.IVocabulary, self.items_vocab))
        self.failUnless(
            verifyObject(interfaces.IVocabularyTokenized, self.items_vocab))

    def test_addt_interfaces(self):
        class IStupid(Interface):
            pass
        v = vocabulary.SimpleVocabulary.fromValues([1, 2, 3], IStupid)
        self.failUnless(IStupid.providedBy(v))

    def test_len(self):
        self.assertEqual(len(self.list_vocab), 3)
        self.assertEqual(len(self.items_vocab), 4)

    def test_contains(self):
        for v in (self.list_vocab, self.items_vocab):
            self.assert_(1 in v and 2 in v and 3 in v)
            self.assert_(5 not in v)

    def test_iter_and_get_term(self):
        for v in (self.list_vocab, self.items_vocab):
            for term in v:
                self.assert_(v.getTerm(term.value) is term)
                self.assert_(v.getTermByToken(term.token) is term)

    def test_nonunique_tokens(self):
        self.assertRaises(
            ValueError, vocabulary.SimpleVocabulary.fromValues,
            [2, '2'])
        self.assertRaises(
            ValueError, vocabulary.SimpleVocabulary.fromItems, 
            [(1, 'one'), ('1', 'another one')])

    def test_overriding_createTerm(self):
        class MyTerm(object):
            def __init__(self, value):
                self.value = value
                self.token = repr(value)
                self.nextvalue = value + 1

        class MyVocabulary(vocabulary.SimpleVocabulary):
            def createTerm(cls, value):
                return MyTerm(value)
            createTerm = classmethod(createTerm)

        vocab = MyVocabulary.fromValues([1, 2, 3])
        for term in vocab:
            self.assertEqual(term.value + 1, term.nextvalue)


def test_suite():
    suite = unittest.makeSuite(RegistryTests)
    suite.addTest(unittest.makeSuite(SimpleVocabularyTests))
    return suite

if __name__ == "__main__":
    unittest.main(defaultTest="test_suite")
