def setUp(self):
super(AdminFilterTestCase, self).setUp()
BDetails.drop_table(True)
DModel.drop_table(True)
CModel.drop_table(True)
BModel.drop_table(True)
AModel.drop_table(True)
AModel.create_table()
BModel.create_table()
CModel.create_table()
DModel.create_table()
BDetails.create_table()