mirror of https://github.com/django/django.git
40 lines
1.1 KiB
Python
40 lines
1.1 KiB
Python
from django.utils import unittest
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from django.utils.functional import lazy, lazy_property
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class FunctionalTestCase(unittest.TestCase):
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def test_lazy(self):
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t = lazy(lambda: tuple(range(3)), list, tuple)
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for a, b in zip(t(), range(3)):
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self.assertEqual(a, b)
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def test_lazy_base_class(self):
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"""Test that lazy also finds base class methods in the proxy object"""
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class Base(object):
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def base_method(self):
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pass
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class Klazz(Base):
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pass
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t = lazy(lambda: Klazz(), Klazz)()
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self.assertTrue('base_method' in dir(t))
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def test_lazy_property(self):
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class A(object):
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def _get_do(self):
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raise NotImplementedError
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def _set_do(self, value):
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raise NotImplementedError
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do = lazy_property(_get_do, _set_do)
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class B(A):
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def _get_do(self):
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return "DO IT"
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self.assertRaises(NotImplementedError, lambda: A().do)
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self.assertEqual(B().do, 'DO IT')
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