new_contents: from unittest import TestCase
  from cinch.lexer import lex
  
  
  class TestLexer(TestCase):
  
      def test_lex(self):
          # noqa -- this is formatted like real code
          source = """
              if ( 4 ) {
                  avariable = 1 + 1
                  anothervariable = a - 314
              }
          """
          # noqa -- this is formatted like real code
          expected_lexing = ['if', '(', '4', ')', '{',     # noqa
              'avariable', '=', '1', '+', '1',             # noqa
              'anothervariable', '=', 'a', '-', '314',     # noqa
          '}']
          result = lex(source)
          self.assertEqual(result, expected_lexing)
  
          # noqa -- this is formatted like real code
          source = """
              function afunction ( a b c ) {
                  avariable = 1 + 1
                  anothervariable = a - 314
              }
          """
  
          # noqa -- this is formatted like real code
          expected_lexing = ['function', 'afunction', '(', 'a', 'b', 'c', ')',
          '{',                                                          # noqa
              'avariable', '=', '1', '+', '1',                          # noqa
              'anothervariable', '=', 'a', '-', '314',                  # noqa
          '}']
          result = lex(source)
          self.assertEqual(result, expected_lexing)
  
subject: Add tests for the lexer