new_contents: # -* encoding: utf-8 *-
  import argparse
  from unittest.case import TestCase
  from collections import namedtuple
  from typing import List, Any, cast
  
  from gopythongo.utils.debversion import DebianVersion
  from gopythongo.versioners.parsers import VersionContainer
  from gopythongo.versioners.parsers.debianparser import DebianVersionParser
  from gopythongo.versioners.parsers.pep440parser import PEP440VersionParser, PEP440Adapter
  from gopythongo.versioners.parsers.semverparser import SemVerVersionParser, SemVerAdapter
  
  
  _Args = namedtuple("_Args", ["semver_partial", "semver_coerce"])
  args = cast(argparse.Namespace, _Args(semver_partial=False, semver_coerce=False))
  
  
  class VersionConversionTests(TestCase):
      def _testeachless(self, *test: Any) -> None:
          ix = 1
          b = test[0]
          while ix < len(test):
              a = b
              b = test[ix]
              self.assertLess(a, b)
              ix += 1
  
      def test_semver_debian(self):
          dvp = DebianVersionParser()
          svp = SemVerVersionParser()
  
          self._testeachless(dvp.convert_from(svp.parse("1.2.3-1", args)).version,
                             dvp.convert_from(svp.parse("1.2.3-1.1", args)).version,
                             dvp.convert_from(svp.parse("1.2.3", args)).version)
  
          self._testeachless(svp.parse("1.2.3-1", args).version,
                             svp.parse("1.2.3-1.1", args).version,
                             svp.parse("1.2.3", args).version)
  
      def test_pep440_debian(self):
          dvp = DebianVersionParser()
          pvp = PEP440VersionParser()
          self._testeachless(
              dvp.convert_from(pvp.parse("1.2.3.a1", args)).version,
              dvp.convert_from(pvp.parse("1.2.3-a2", args)).version,
              dvp.convert_from(pvp.parse("1.2.3-rc1", args)).version,
              dvp.convert_from(pvp.parse("1.2.3", args)).version,
              dvp.convert_from(pvp.parse("1.2.3-1", args)).version,      # ==post1
              dvp.convert_from(pvp.parse("1.2.3-post2", args)).version,  # ==post2
              dvp.convert_from(pvp.parse("1.2.3-rev3", args)).version    # ==post3
          )
  
subject: add some initial tests for version conversion to Debien versions