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import ipaddr

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import unittest

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from pvl.hosts import config

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from StringIO import StringIO

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class Options(object):

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    hosts_charset   = 'utf-8'

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    hosts_domain    = None

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    hosts_include   = None

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class ConfFile(StringIO):

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    def __init__(self, name, buffer):

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        StringIO.__init__(self, buffer)

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        self.name = name

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class TestConfig(unittest.TestCase):

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    def setUp(self):

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        self.options = Options()

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    def assertHostsEqual(self, hosts, expected):

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        for host, expect in zip(hosts, expected):

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            host_str, attrs = expect

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            self.assertEquals(str(host), host_str)

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            for attr, value in attrs.iteritems():

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                self.assertEquals(getattr(host, attr), value)

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    def testApply(self):

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        self.assertHostsEqual(config.apply(self.options, ['etc/hosts/test']), [

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                ('foo@test', dict(ip=ipaddr.IPAddress('127.0.0.1'))),

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                ('bar@test', dict(ip=ipaddr.IPAddress('127.0.0.2'))),

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        ])

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    def testApplyHostsError(self):

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        with self.assertRaises(config.HostConfigError):

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            list(config.apply_hosts(self.options, ['nonexistant']))

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    def testApplyHosts(self):

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        conf_file = ConfFile('test', """

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[foo]

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    ip = 127.0.0.1

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[bar]

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    ip = 127.0.0.2

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        """)

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        expected = [

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                ('foo@test', dict(ip=ipaddr.IPAddress('127.0.0.1'))),

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                ('bar@test', dict(ip=ipaddr.IPAddress('127.0.0.2'))),

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        ]

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        self.assertHostsEqual(config.apply_hosts_file(self.options, conf_file), expected)

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    def testApplyHostsExpand(self):

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                ('asdf1@asdf', dict(ip=ipaddr.IPAddress('10.100.100.1'))),

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                ('asdf2@asdf', dict(ip=ipaddr.IPAddress('10.100.100.2'))),

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                ('asdf3@asdf', dict(ip=ipaddr.IPAddress('10.100.100.3'))),

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        ])

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if __name__ == '__main__':

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    unittest.main()