code: def test_init_required_named(sagemaker_session):
      lr = LinearLearner(
          sagemaker_session=sagemaker_session, **ALL_REQ_ARGS
      )
  
      assert lr.role == ALL_REQ_ARGS["role"]
      assert lr.instance_count == ALL_REQ_ARGS["instance_count"]
      assert lr.instance_type == ALL_REQ_ARGS["instance_type"]
      assert lr.predictor_type == ALL_REQ_ARGS["predictor_type"]
  
imports: from __future__ import absolute_import
  import pytest
  from mock import Mock, patch
  from sagemaker import image_uris
  from sagemaker.amazon.linear_learner import LinearLearner, LinearLearnerPredictor
  from sagemaker.amazon.amazon_estimator import RecordSet
  from sagemaker.session_settings import SessionSettings
label_desc: Use image node_id 3 for calling a global function with example usage: test_init_required_named(sagemaker_session) without return types