def testOptionalDefaults(self):
class device(object):
def __init__(self, name):
self.name = name
def __cmp__(self, other):
return cmp(self.name, other.name)
d1 = device('a')
d2 = device('b')
d3 = device('c')
devices = [d1, d2, d3]
to_find = device('f')
self.assertEqual(
'dummy',
find(devices, to_find, default=optional({'name': 'dummy'})).name)
x = find(devices, to_find, default=optional({'alma': []}))
self.assertEqual(x['alma'], [])
self.assertEqual(x['banan'], None)
from mandatory import problem_1, problem_2, problem_3
from optional import main as optional
if __name__ == '__main__':
problem_1()
problem_2()
problem_3()
optional()
def testOptionalDefaults(self):
o = optional({'alma': 42, 'banan': lambda x: x+1})
self.assertIsInstance(o.some_attr, none)
self.assertEqual(o.alma, 42)
self.assertEqual(o.banan(42), 43)
def testOptional(self):
o = optional()
self.assertIsInstance(o.some_attr, none)
self.assertIsNone(o.some_attr())