class_docstr: Test case for the sun zenith reducer.
docstr: Initialze SunZenithReducer classes that shall be tested.
docstr_tok: ["Initialze","SunZenithReducer","classes","that","shall","be","tested","."]
code: def setup_class(cls):
      """Initialze SunZenithReducer classes that shall be tested."""
      from satpy.modifiers.geometry import SunZenithReducer
  
      cls.default = SunZenithReducer(
          name="sza_reduction_test_default", modifiers=tuple()
      )
      cls.custom = SunZenithReducer(
          name="sza_reduction_test_custom",
          modifiers=tuple(),
          correction_limit=70,
          max_sza=95,
          strength=3.0,
      )
  
imports: import unittest
  from datetime import datetime
  from unittest import mock
  import dask.array
  import numpy
  import pytest
  import xarray
  from pyresample.geometry import AreaDefinition, StackedAreaDefinition
  from pytest_lazyfixture import lazy_fixture
label_desc: Use image node_id 1 for calling the TestSunZenithReducer obj's underlying member method code with example usage: obj.setup_class(cls) without return types