def test_scope(self):
"""
Test setting scope both on Column initialization and
after column initialization.
"""
col = Column(scope='parent').test.field
self.assertEqual(col._scope, 'parent')
self.assertEqual(col.get_scope(), 'parent')
col.set_scope('normal')
self.assertEqual(col._scope, 'normal')
self.assertEqual(col.get_scope(), 'normal')
def test_copy(self):
"""
Tests the creation of a copy
"""
mock_owner = MockOwner()
col = Column(scope='parent').test.field
col.set_alias('cheese')
col.owner = mock_owner
col_copy = copy.copy(col)
self.assertNotEqual(id(col), id(col_copy))
self.assertEqual(id(col._owner), id(col_copy._owner))
def test_deepcopy(self):
"""
Tests the creation of a deep copy (which is the same as
a copy for column objects, due to the use of weakref.proxy()
for the owner).
"""
mock_owner = MockOwner()
col = Column(scope='parent').test.field
col.set_alias('cheese')
col.owner = mock_owner
col_copy = copy.copy(col)
self.assertNotEqual(id(col), id(col_copy))
self.assertEqual(id(col._owner), id(col_copy._owner))
def test_hash(self):
"""
Checks to see if the has of two objects with the same options
hash to the same value, and that two column objects that do
not share all of the same objects hash to different values
"""
mock_owner = MockOwner()
col = Column(scope='parent').test.field
col.set_alias('fish')
col.owner = mock_owner
mock_owner2 = MockOwner()
col2 = Column(scope='parent').test.field
col2.set_alias('fish')
col2.owner = mock_owner2
self.assertEqual(hash(col), hash(col2))
mock_owner3 = MockOwner()
col3 = Column(scope='parent').test.field
col3.set_alias('cheese')
col3.owner = mock_owner
self.assertNotEqual(hash(col), hash(col3))
