text: from tests.test_lock_redis_factory import Test as RedisTests
  from tests.test_lock_contention import Test as RedisContention
  from resource_locker import NativeLockFactory
  
  
  class TestCommon(RedisTests):
      factory_class = NativeLockFactory
  
  
  class TestContention(RedisContention):
      factory_class = NativeLockFactory
      concurrency = 10
      available = 7
      need = 2
      concurrency_delay = 0.001
  
  
  # lets not run things twice
  del RedisTests
  del RedisContention
  