class_docstr: Test the Ocean Color reader.
class_docstr_tok: ["Test","the","Ocean","Color","reader","."]
docstr: Test start time property.
docstr_tok: ["Test","start","time","property","."]
code: def test_start_time(self, fake_file_dict):
      """Test start time property."""
      reader = self._create_reader_for_resolutions(
          [fake_file_dict["k490_1d"]]
      )
      assert reader.start_time == datetime(2021, 8, 1, 0, 0, 0)
  
imports: import os
  from datetime import datetime
  import numpy
  import pytest
  import xarray
  from pyresample.geometry import AreaDefinition
label_desc: Use image node_id 10 for calling the TestOCCCIReader obj's underlying member method code with example usage: obj.test_start_time(fake_file_dict) without return types