Synnefo » snf-ganeti

def ShouldCfgdowngrade(version, current=CURRENT_VERSION):

  """Decide whether cfgupgrade --downgrade should be called.

  Given the current version and the version to change to, decide

  if in the transition process cfgupgrade --downgrade should

  be called

  @param version: The version to upgrade to as (major, minor, revision)

  @type version: tuple

  @param current: The versino to upgrade from as (major, minor, revision)

  @type current: tuple

  @rtype: bool

  @return: True, if cfgupgrade --downgrade should be called.

  """

  return version[0] == current[0] and version[1] == current[1] - 1

class ShouldCfgdowngradeTest(unittest.TestCase):

    def testShouldCfgDowngrade(self):

        self.assertTrue(version.ShouldCfgdowngrade((2,9,3), current=(2,10,0)))

        self.assertTrue(version.ShouldCfgdowngrade((2,9,0), current=(2,10,4)))

        self.assertFalse(version.ShouldCfgdowngrade((2,9,0), current=(2,11,0)))

        self.assertFalse(version.ShouldCfgdowngrade((2,9,0), current=(3,10,0)))

        self.assertFalse(version.ShouldCfgdowngrade((2,10,0), current=(3,10,0)))