class_docstr: Test how metadata is combined.
class_docstr_tok: ["Test","how","metadata","is","combined","."]
docstr: Test combine metadata with identical lists.
docstr_tok: ["Test","combine","metadata","with","identical","lists","."]
code: def test_combine_lists_identical(self):
      """Test combine metadata with identical lists."""
      from satpy.dataset.metadata import combine_metadata
  
      metadatas = [
          {"prerequisites": [1, 2, 3, 4]},
          {"prerequisites": [1, 2, 3, 4]},
      ]
      res = combine_metadata(*metadatas)
      assert res["prerequisites"] == [1, 2, 3, 4]
  
imports: import unittest
  from datetime import datetime
  import numpy
  import pytest
  from satpy.dataset.dataid import DataID, DataQuery, ModifierTuple, WavelengthRange, minimal_default_keys_config
  from satpy.readers.pmw_channels_definitions import FrequencyDoubleSideBand, FrequencyQuadrupleSideBand, FrequencyRange
  from satpy.tests.utils import make_cid, make_dataid, make_dsq
label_desc: Use image node_id 6 for calling the TestCombineMetadata obj's underlying member method code with example usage: obj.test_combine_lists_identical() without return types