new_contents: import os
  import unittest
  import tempfile
  from io import StringIO
  
  from pysd.py_backend.xmile.xmile2py import translate_xmile
  
  
  
  class TestEquationStringParsing(unittest.TestCase):
  
      def test_multiline_equation():
          with open('tests/test-models/tests/game/test_game.stmx', 'r') as stmx:
              contents = stmx.read()
  
          # Insert line break in equation definition
          contents = contents.replace('<eqn>(Stock+Constant)</eqn>', '<eqn>(Stock+\nConstant)</eqn>')
  
          # Write out contents to temporary file
          with tempfile.NamedTemporaryFile(mode='w', delete=False) as temp_file:
              temp_file.write(contents)
  
          # Convert file (should not raise error)
          generated_file = translate_xmile(temp_file.name)
  
          with open(generated_file, 'r') as fp:
              contents = fp.read()
  
          idx = contents.find('stock() + constant()')
  
          assert idx > 0, 'Correct, generated, equation not found'
  
          os.remove(temp_file.name)
          os.remove(generated_file+'.py')
  
subject: Test to ensure equations with line breaks are parsed correctly