new_contents: import unittest
  from routes.route import Route
  
  
  class TestRouteEscape(unittest.TestCase):
      def test_normal_route(self):
          r = Route('test', '/foo/bar')
          self.assertEqual(r.routelist, ['/foo/bar'])
  
      def test_route_with_backslash(self):
          r = Route('test', '/foo\\\\bar')
          self.assertEqual(r.routelist, ['/foo\\bar'])
  
      def test_route_with_random_escapes(self):
          r = Route('test', '\\/f\\oo\\/ba\\r')
          self.assertEqual(r.routelist, ['\\/f\\oo\\/ba\\r'])
  
      def test_route_with_colon(self):
          r = Route('test', '/foo:bar/baz')
          self.assertEqual(
              r.routelist, ['/foo', {'name': 'bar', 'type': ':'}, '/', 'baz'])
  
      def test_route_with_escaped_colon(self):
          r = Route('test', '/foo\\:bar/baz')
          self.assertEqual(r.routelist, ['/foo:bar/baz'])
  
      def test_route_with_both_colons(self):
          r = Route('test', '/prefix/escaped\\:escaped/foo=:notescaped/bar=42')
          self.assertEqual(
              r.routelist, ['/prefix/escaped:escaped/foo=',
                            {'name': 'notescaped', 'type': ':'}, '/', 'bar=42'])
  
      def test_route_with_all_escapes(self):
          r = Route('test', '/hmm\\:\\*\\{\\}*star/{brackets}/:colon')
          self.assertEqual(
              r.routelist, ['/hmm:*{}', {'name': 'star', 'type': '*'}, '/',
                            {'name': 'brackets', 'type': ':'}, '/',
                            {'name': 'colon', 'type': ':'}])
  
subject: Add tests for backslash escapes in route paths