new_contents: """Tests for the set of functions defined in compressor.functions"""
  import sys
  
  from compressor.functions import endianess_prefix
  
  
  def test_endianess_prefix_bigendinan(monkeypatch):
      monkeypatch.setattr(sys, 'byteorder', 'big')
      assert endianess_prefix() == '>'
  
  
  def test_endianess_prefix_bytes(monkeypatch):
      monkeypatch.setattr(sys, 'byteorder', 'big')
      assert endianess_prefix(bytes) == b'>'
  
subject: Add tests for functions