"""unit tests for module cubicweb.common.utils"""

from logilab.common.testlib import TestCase, unittest_main

from cubicweb.common.utils import make_uid, UStringIO, SizeConstrainedList

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 = {}

        while len(d)<10000:

            uid = make_uid('xyz')

            if d.has_key(uid):

                self.fail(len(d))

            d[uid] = 1

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

if __name__ == '__main__':

    unittest_main()