old_contents: import lz4.frame as lz4frame
  import pytest
  import os
  import struct
  
  test_data = [
      (os.urandom(256 * 1024)),
  ]
  
  
  @pytest.fixture(
      params=test_data,
      ids=[
          'data' + str(i) for i in range(len(test_data))
      ]
  )
  def data(request):
      return request.param
  
  
  def test_decompress_truncated(data):
      compressed = lz4frame.compress(data)
  
      message = r'^LZ4F_getFrameInfo failed with code: ERROR_frameHeader_incomplete'
      with pytest.raises(RuntimeError, message=message):
          lz4frame.decompress(compressed[:6])
  
      for i in range(16, len(compressed) - 1, 5):  # 15 is the max size of the header
          message = r'^Frame incomplete. LZ4F_decompress returned: {0}'.format(
              len(compressed) - i)
          try:
              lz4frame.decompress(compressed[:i])
          except RuntimeError as r:
              print(r)
          with pytest.raises(RuntimeError, message=message):
              lz4frame.decompress(compressed[:i])
  
  
  def test_content_checksum_failure(data):
      compressed = lz4frame.compress(data, content_checksum=True)
      message = r'^LZ4F_decompress failed with code: ERROR_contentChecksum_invalid$'
      with pytest.raises(RuntimeError, message=message):
          last = struct.unpack('B', compressed[-1:])[0]
          lz4frame.decompress(compressed[:-1] + struct.pack('B', last ^ 0x42))
  
  
  def test_block_checksum_failure(data):
      compressed = lz4frame.compress(
          data,
          content_checksum=True,
          block_checksum=True,
          return_bytearray=True,
      )
      message = r'^LZ4F_decompress failed with code: ERROR_blockChecksum_invalid$'
      if len(compressed) > 32:
          with pytest.raises(RuntimeError, message=message):
              compressed[18] = compressed[18] ^ 0x42
              lz4frame.decompress(compressed)
  
new_contents: import lz4.frame as lz4frame
  import pytest
  import os
  import struct
  
  test_data = [
      (os.urandom(256 * 1024)),
  ]
  
  
  @pytest.fixture(
      params=test_data,
      ids=[
          'data' + str(i) for i in range(len(test_data))
      ]
  )
  def data(request):
      return request.param
  
  
  def test_decompress_truncated(data):
      compressed = lz4frame.compress(data)
  
      message = r'^LZ4F_getFrameInfo failed with code: ERROR_frameHeader_incomplete'
      with pytest.raises(RuntimeError, match=message):
          lz4frame.decompress(compressed[:6])
  
      for i in range(16, len(compressed) - 1, 5):  # 15 is the max size of the header
          message = r'^Frame incomplete. LZ4F_decompress returned: {0}'.format(
              len(compressed) - i)
          try:
              lz4frame.decompress(compressed[:i])
          except RuntimeError as r:
              print(r)
          with pytest.raises(RuntimeError, match=message):
              lz4frame.decompress(compressed[:i])
  
  
  def test_content_checksum_failure(data):
      compressed = lz4frame.compress(data, content_checksum=True)
      message = r'^LZ4F_decompress failed with code: ERROR_contentChecksum_invalid$'
      with pytest.raises(RuntimeError, match=message):
          last = struct.unpack('B', compressed[-1:])[0]
          lz4frame.decompress(compressed[:-1] + struct.pack('B', last ^ 0x42))
  
  
  def test_block_checksum_failure(data):
      compressed = lz4frame.compress(
          data,
          content_checksum=True,
          block_checksum=True,
          return_bytearray=True,
      )
      message = r'^LZ4F_decompress failed with code: ERROR_blockChecksum_invalid$'
      if len(compressed) > 32:
          with pytest.raises(RuntimeError, match=message):
              compressed[18] = compressed[18] ^ 0x42
              lz4frame.decompress(compressed)
  
subject: Replace uses of message with match in tests