code: def test_json_serializer_numpy_valid_2dimensional(json_serializer):
      result = json_serializer.serialize(
          np.array([[1, 2, 3], [3, 4, 5]])
      )
  
      assert result == "[[1, 2, 3], [3, 4, 5]]"
  
imports: from __future__ import absolute_import
  import io
  import json
  import os
  import numpy
  import pytest
  import scipy.sparse
  from sagemaker.serializers import CSVSerializer, NumpySerializer, JSONSerializer, IdentitySerializer, SparseMatrixSerializer, JSONLinesSerializer, LibSVMSerializer, DataSerializer
  from tests.unit import DATA_DIR
label_desc: Use image node_id 25 for calling a global function with example usage: test_json_serializer_numpy_valid_2dimensional(json_serializer) without return types