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

     2 

     3 from logilab.common.testlib import TestCase, unittest_main

     4 

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

     6 

     7 

     8 class MakeUidTC(TestCase):

     9     def test_1(self):

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

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

    12         

    13     def test_2(self):

    14         d = {}

    15         while len(d)<10000:

    16             uid = make_uid('xyz')

    17             if d.has_key(uid):

    18                 self.fail(len(d))

    19             d[uid] = 1

    20 

    21         

    22 class UStringIOTC(TestCase):

    23     def test_boolean_value(self):

    24         self.assert_(UStringIO())

    25 

    26 

    27 class SizeConstrainedListTC(TestCase):

    28 

    29     def test_append(self):

    30         l = SizeConstrainedList(10)

    31         for i in xrange(12):

    32             l.append(i)

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

    34     

    35     def test_extend(self):

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

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

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

    39                     ]

    40         for extension, expected in testdata:

    41             l = SizeConstrainedList(10)

    42             l.extend(extension)

    43             yield self.assertEquals, l, expected

    44 

    45    

    46 if __name__ == '__main__':

    47     unittest_main()