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from django.test import TestCase
from django.db.backends import BaseDatabaseWrapper
class DummyDatabaseWrapper(BaseDatabaseWrapper):
pass
class DummyObject(object):
alias = None
class DbBackendTests(TestCase):
def test_compare_db_wrapper_with_another_object(self):
wrapper = BaseDatabaseWrapper({})
self.assertFalse(wrapper == 'not-a-db-wrapper')
def test_compare_db_wrapper_with_another_object_with_alias(self):
wrapper = BaseDatabaseWrapper({})
obj = DummyObject()
obj.alias = wrapper.alias = 'foobar'
self.assertFalse(wrapper == obj)
def test_negate_compare_db_wrapper_with_another_object(self):
wrapper = BaseDatabaseWrapper({})
self.assertTrue(wrapper != 'not-a-db-wrapper')
def test_compare_db_wrappers(self):
wrapper1 = DummyDatabaseWrapper({})
wrapper2 = BaseDatabaseWrapper({})
wrapper1.alias = wrapper2.alias = 'foo'
self.assertTrue(wrapper1 == wrapper2)
wrapper1.alias = 'bar'
self.assertFalse(wrapper1 == wrapper2)
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