new_contents: import unittest
  import sys
  from os import *
  import os
  sys.path.append(path.dirname(path.dirname(path.abspath(__file__))))
  
  class TestLaserstructureOutput(unittest.TestCase):
      mainPath = path.dirname(path.dirname(path.abspath(__file__))) + '\src\main.py'
      jsonPath = os.path.join(path.dirname(path.dirname(path.abspath(__file__))), 'tests\json_test_files\correct.json')
  
      def testMain(self):
          try:
              os.system('python ' + self.mainPath + ' ' + self.jsonPath + ' 999')
          except Exception, error:
              self.fail(error)
          
  if __name__ == '__main__':
      unittest.main()
  
subject: Create main_test.py