code: def test_sfloat_getitem(self, aligned, scaling):
      a = self._get_array(1.0, aligned)
      assert a.tolist() == [1.0, 2.0, 3.0]
  
imports: import pytest
  import numpy
  from numpy.testing import assert_array_equal
  from numpy.core._multiarray_umath import _discover_array_parameters, _get_sfloat_dtype
label_desc: Use image node_id 8 for calling the TestSFloat obj's underlying member method code with example usage: obj.test_sfloat_getitem(aligned, scaling) without return types