old_contents: """Unittests for deprecated features"""
  
  
  import warnings
  
  import affine
  import pytest
  
  import rasterio
  
  
  def test_open_affine_and_transform(path_rgb_byte_tif):
      """Passsing both 'affine' and 'transform' to rasterio.open() should issue
      some helpful warnings.
  
      By settings the 'affine' kwarg to a wacky value we ensure that the
      'transform' kwarg is used while ignoring the 'affine' kwarg.
      """
      with warnings.catch_warnings(record=True) as w:
          with rasterio.open(
                  path_rgb_byte_tif,
                  affine=rasterio,
                  transform=affine.Affine.identity()) as src:
              pass
          assert len(w) == 2
          assert "'affine' kwarg in rasterio.open() is deprecated" \
                 in str(w[0].message)
          assert "Found both 'affine' and 'transform'" in str(w[1].message)
          assert "choosing 'transform'" in str(w[1].message)
  
  
  def test_open_transform_gdal_geotransform(path_rgb_byte_tif):
      """Passing a GDAL geotransform to rasterio.open(transform=...) should raise
      an exception.
      """
      with pytest.raises(TypeError):
          with rasterio.open(
                  path_rgb_byte_tif,
                  transform=tuple(affine.Affine.identity())) as src:
              pass
  
  
  def test_open_affine_kwarg_warning(path_rgb_byte_tif):
      """Passing the 'affine' kwarg to rasterio.open() should raise a warning."""
      with pytest.warns(DeprecationWarning):
          with rasterio.open(
                  path_rgb_byte_tif,
                  affine=affine.Affine.identity()) as src:
              pass
  
  
  def test_src_affine_warning(path_rgb_byte_tif):
      """Calling src.affine should raise a warning."""
      with pytest.warns(DeprecationWarning):
          with rasterio.open(path_rgb_byte_tif) as src:
              assert src.affine == src.transform
  
new_contents: """Unittests for deprecated features"""
  
  
  import affine
  import pytest
  
  import rasterio
  
  
  def test_open_affine_and_transform(path_rgb_byte_tif):
      """Passsing both 'affine' and 'transform' to rasterio.open() should issue
      some helpful warnings.
  
      By settings the 'affine' kwarg to a wacky value we ensure that the
      'transform' kwarg is used while ignoring the 'affine' kwarg.
      """
      with pytest.warns(None) as record:
          with rasterio.open(
                  path_rgb_byte_tif,
                  affine=rasterio,
                  transform=affine.Affine.identity()) as src:
              pass
          assert len(record) == 2
          assert "The 'affine' kwarg in rasterio.open() is deprecated" in str(record[0].message)
          assert "choosing 'transform'" in str(record[1].message)
  
  
  
  def test_open_transform_gdal_geotransform(path_rgb_byte_tif):
      """Passing a GDAL geotransform to rasterio.open(transform=...) should raise
      an exception.
      """
      with pytest.raises(TypeError):
          with rasterio.open(
                  path_rgb_byte_tif,
                  transform=tuple(affine.Affine.identity())) as src:
              pass
  
  
  def test_open_affine_kwarg_warning(path_rgb_byte_tif):
      """Passing the 'affine' kwarg to rasterio.open() should raise a warning."""
      with pytest.warns(DeprecationWarning):
          with rasterio.open(
                  path_rgb_byte_tif,
                  affine=affine.Affine.identity()) as src:
              pass
  
  
  def test_src_affine_warning(path_rgb_byte_tif):
      """Calling src.affine should raise a warning."""
      with pytest.warns(DeprecationWarning):
          with rasterio.open(path_rgb_byte_tif) as src:
              assert src.affine == src.transform
  
subject: Switch to pytest.warns()