old_contents: """Testcases for sqlalchemy_jsonapi unittests."""
  
  import unittest
  
  from sqlalchemy_jsonapi.unittests.models import Base
  from sqlalchemy.orm import sessionmaker
  from sqlalchemy import create_engine
  
  
  class SqlalchemyJsonapiTestCase(unittest.TestCase):
      """Base test case for all tests."""
  
      def setUp(self, *args, **kwargs):
          """Configure sqlalchemy and session."""
          super(SqlalchemyJsonapiTestCase, self).setUp(*args, **kwargs)
          self.engine = create_engine('sqlite://')
          Session = sessionmaker(bind=self.engine)
          self.session = Session()
          Base.metadata.create_all(self.engine)
  
      def tearDown(self, *args, **kwargs):
          """Reset the sqlalchemy engine."""
          super(SqlalchemyJsonapiTestCase, self).tearDown(*args, **kwargs)
          Base.metadata.drop_all(self.engine)
  
new_contents: """Testcases for sqlalchemy_jsonapi unittests."""
  
  import unittest
  
  from sqlalchemy_jsonapi.unittests.models import Base
  from sqlalchemy.orm import sessionmaker
  from sqlalchemy import create_engine
  
  
  class SqlalchemyJsonapiTestCase(unittest.TestCase):
      """Base testcase for SQLAclehmy-related tests."""
  
      def setUp(self, *args, **kwargs):
          """Configure sqlalchemy and session."""
          super(SqlalchemyJsonapiTestCase, self).setUp(*args, **kwargs)
          self.engine = create_engine('sqlite://')
          Session = sessionmaker(bind=self.engine)
          self.session = Session()
          Base.metadata.create_all(self.engine)
  
      def tearDown(self, *args, **kwargs):
          """Reset the sqlalchemy engine."""
          super(SqlalchemyJsonapiTestCase, self).tearDown(*args, **kwargs)
          Base.metadata.drop_all(self.engine)
  
subject: fix doc string description