"""unit tests for module cubicweb.utils

:organization: Logilab

:copyright: 2001-2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.

:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr

:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses

"""

import re

import decimal

import datetime

from logilab.common.testlib import TestCase, unittest_main

from cubicweb.utils import make_uid, UStringIO, SizeConstrainedList

try:

    import simplejson

    from cubicweb.utils import CubicWebJsonEncoder

except ImportError:

    simplejson = None

class MakeUidTC(TestCase):

    def test_1(self):

        self.assertNotEquals(make_uid('xyz'), make_uid('abcd'))

        self.assertNotEquals(make_uid('xyz'), make_uid('xyz'))

    def test_2(self):

        d = set()

        while len(d)<10000:

            uid = make_uid('xyz')

            if uid in d:

                self.fail(len(d))

            if re.match('\d', uid):

                self.fail('make_uid must not return something begining with '

                          'some numeric character, got %s' % uid)

            d.add(uid)

class UStringIOTC(TestCase):

    def test_boolean_value(self):

        self.assert_(UStringIO())

class SizeConstrainedListTC(TestCase):

    def test_append(self):

        l = SizeConstrainedList(10)

        for i in xrange(12):

            l.append(i)

        self.assertEquals(l, range(2, 12))

    def test_extend(self):

        testdata = [(range(5), range(5)),

                    (range(10), range(10)),

                    (range(12), range(2, 12)),

                    ]

        for extension, expected in testdata:

            l = SizeConstrainedList(10)

            l.extend(extension)

            yield self.assertEquals, l, expected

class JSONEncoerTests(TestCase):

    def setUp(self):

        if simplejson is None:

            self.skip('simplejson not available')

    def encode(self, value):

        return simplejson.dumps(value, cls=CubicWebJsonEncoder)

    def test_encoding_dates(self):

        self.assertEquals(self.encode(datetime.datetime(2009, 9, 9, 20, 30)),

                          '"2009/09/09 20:30:00"')

        self.assertEquals(self.encode(datetime.date(2009, 9, 9)),

                          '"2009/09/09"')

        self.assertEquals(self.encode(datetime.time(20, 30)),

                          '"20:30:00"')

    def test_encoding_decimal(self):

        self.assertEquals(self.encode(decimal.Decimal('1.2')), '1.2')

    def test_encoding_unknown_stuff(self):

        self.assertEquals(self.encode(TestCase), 'null')

if __name__ == '__main__':

    unittest_main()