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Implemented Singleton metaclass

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This commit is contained in:
tylerlaberge
2016-07-17 21:29:52 -04:00
parent 8e26a8b0d8
commit 13eac458e5
4 changed files with 91 additions and 32 deletions
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56
tests/test_utils.py
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@@ -1,5 +1,6 @@
from unittest import TestCase
from tests.utils.dummy_class import dummy_factory
from tests.utils.dummy import dummy_class_factory
from abc import ABCMeta, ABC
class DummyClassTestCase(TestCase):
@@ -21,9 +22,8 @@ class DummyClassTestCase(TestCase):
@raise AssertionError: If the test fails.
"""
dummy_class = dummy_factory(base_class=object,
attributes={'a': self.a, 'b': self.b},
functions={'add': self.add_function, 'subtract': self.subtract_function})
dummy_class = dummy_class_factory(attributes={'a': self.a, 'b': self.b},
functions={'add': self.add_function, 'subtract': self.subtract_function})
dummy = dummy_class()
@@ -36,9 +36,8 @@ class DummyClassTestCase(TestCase):
@raise AssertionError: If the test fails.
"""
dummy_class = dummy_factory(base_class=object,
attributes={'a': self.a, 'b': self.b},
functions={'add': self.add_function})
dummy_class = dummy_class_factory(attributes={'a': self.a, 'b': self.b},
functions={'add': self.add_function})
dummy = dummy_class()
self.assertEquals(15, dummy.add())
@@ -49,9 +48,8 @@ class DummyClassTestCase(TestCase):
@raise AssertionError: If the test fails.
"""
dummy_class = dummy_factory(base_class=object,
attributes={'a': self.a, 'b': self.b},
functions={'subtract': self.subtract_function})
dummy_class = dummy_class_factory(attributes={'a': self.a, 'b': self.b},
functions={'subtract': self.subtract_function})
dummy = dummy_class()
self.assertEquals(5, dummy.subtract())
@@ -62,9 +60,8 @@ class DummyClassTestCase(TestCase):
@raise AssertionError: If the test fails.
"""
dummy_class_one = dummy_factory(base_class=object,
attributes={'a': self.a, 'b': self.b},
functions={'add': self.add_function})
dummy_class_one = dummy_class_factory(attributes={'a': self.a, 'b': self.b},
functions={'add': self.add_function})
dummy_class_one_instance_one = dummy_class_one()
dummy_class_one_instance_two = dummy_class_one()
@@ -79,12 +76,10 @@ class DummyClassTestCase(TestCase):
@raise AssertionError: If the test fails.
"""
dummy_class_one = dummy_factory(base_class=object,
attributes={'a': self.a, 'b': self.b},
functions={'add': self.add_function})
dummy_class_two = dummy_factory(base_class=object,
attributes={'a': 30, 'b': 10},
functions={'subtract': self.subtract_function})
dummy_class_one = dummy_class_factory(attributes={'a': self.a, 'b': self.b},
functions={'add': self.add_function})
dummy_class_two = dummy_class_factory(attributes={'a': 30, 'b': 10},
functions={'subtract': self.subtract_function})
self.assertNotEquals(dummy_class_one.a, dummy_class_two.a)
self.assertNotEquals(dummy_class_one.b, dummy_class_two.b)
@@ -95,6 +90,29 @@ class DummyClassTestCase(TestCase):
assert (hasattr(dummy_class_two, 'subtract'))
assert (not hasattr(dummy_class_two, 'add'))
def test_meta_class(self):
"""
Test assigning a metaclass.
@raise AssertionError: If the test fails.
"""
dummy_class = dummy_class_factory(attributes={'a': self.a, 'b': self.b},
functions={'add': self.add_function},
meta_class=ABCMeta)
self.assertEquals(ABCMeta, dummy_class.__class__)
def test_base_class(self):
"""
Test assigning a base class.
@raise AssertionError: If the test fails
"""
dummy_class = dummy_class_factory(attributes={'a': self.a, 'b': self.b},
functions={'add': self.add_function},
base_class=ABC)
self.assertEquals(ABC, dummy_class.__base__)