def test_copy_and_mutate(self):
schema = mock.Mock()
chain = FilterChain(schema=schema)
chain.lookup_descriptions.append(1)
chain.base_url = 'http://xyz'
chain['foo'] = 'bar'
chain['qux'] = 'whee'
clone = chain.copy()
# Attributes are copied...
self.assertEqual(clone.lookup_descriptions, [1])
self.assertEqual(clone.base_url, chain.base_url)
self.assertEqual(clone.schema, chain.schema, schema)
# ... and mutating them doesn't affect the original.
clone.lookup_descriptions.pop()
self.assertEqual(chain.lookup_descriptions, [1])
# Likewise, items are copied, and mutating doesn't affect the copy.
self.assertEqual(clone['foo'], 'bar')
del chain['foo']
self.assertEqual(clone['foo'], 'bar')
del clone['qux']
self.assertEqual(chain['qux'], 'whee')
# Likewise, clearing.
clone.clear()
self.assertEqual(clone.items(), [])
self.assertEqual(chain['qux'], 'whee')
def test_copy_and_mutate(self):
schema = mock.Mock()
chain = FilterChain(schema=schema)
chain.lookup_descriptions.append(1)
chain.base_url = 'http://xyz'
chain['foo'] = 'bar'
chain['qux'] = 'whee'
clone = chain.copy()
# Attributes are copied...
self.assertEqual(clone.lookup_descriptions, [1])
self.assertEqual(clone.base_url, chain.base_url)
self.assertEqual(clone.schema, chain.schema, schema)
# ... and mutating them doesn't affect the original.
clone.lookup_descriptions.pop()
self.assertEqual(chain.lookup_descriptions, [1])
# Likewise, items are copied, and mutating doesn't affect the copy.
self.assertEqual(clone['foo'], 'bar')
del chain['foo']
self.assertEqual(clone['foo'], 'bar')
del clone['qux']
self.assertEqual(chain['qux'], 'whee')
# Likewise, clearing.
clone.clear()
self.assertEqual(clone.items(), [])
self.assertEqual(chain['qux'], 'whee')
