code: def sunz_ds2():
      """Generate larger fake dataset for sunz tests."""
      attrs = _shared_sunz_attrs(_sunz_bigger_area_def())
      ds2 = xr.DataArray(
          da.ones((4, 4), chunks=2, dtype=np.float64),
          attrs=attrs,
          dims=("y", "x"),
          coords={"y": [0, 0.5, 1, 1.5], "x": [0, 0.5, 1, 1.5]},
      )
      return ds2
  
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 8 for calling a global function with example usage: sunz_ds2() and returns: ds2