code: def test_affine_from_params():
      incs, outcs, aff = affine_v2w()
      cm = AffineTransform.from_params("ijk", "xyz", aff)
      assert_array_equal(cm.affine, aff)
      badaff = np.array([[1, 2, 3], [4, 5, 6]])
      pytest.raises(
          ValueError, AffineTransform.from_params, "ijk", "xyz", badaff
      )
  
imports: from copy import copy
  from types import SimpleNamespace
  import numpy
  from ..coordinate_map import AffineTransform, AxisError, CoordinateMap, CoordMapMaker, CoordMapMakerError, _as_coordinate_map, _fix0, append_io_dim, axmap, compose, drop_io_dim, equivalent, input_axis_index, io_axis_indices, orth_axes, product, shifted_domain_origin, shifted_range_origin
  from ..coordinate_system import CoordinateSystem, CoordinateSystemError, CoordSysMaker
  import pytest
  from numpy.testing import assert_almost_equal, assert_array_equal
label_desc: Use image node_id 21 for calling a global function with example usage: test_affine_from_params() without return types