# This file is part of cloud-init. See LICENSE file for license information.

import unittest

from cloudinit.distros.parsers import hosts

BASE_ETC = """
# Example
127.0.0.1	localhost
192.168.1.10	foo.mydomain.org  foo
192.168.1.10 	bar.mydomain.org  bar
146.82.138.7	master.debian.org      master
209.237.226.90	www.opensource.org
"""
BASE_ETC = BASE_ETC.strip()


class TestHostsHelper(unittest.TestCase):
    def test_parse(self):
        eh = hosts.HostsConf(BASE_ETC)
        self.assertEqual(eh.get_entry("127.0.0.1"), [["localhost"]])
        self.assertEqual(
            eh.get_entry("192.168.1.10"),
            [["foo.mydomain.org", "foo"], ["bar.mydomain.org", "bar"]],
        )
        eh = str(eh)
        self.assertTrue(eh.startswith("# Example"))

    def test_add(self):
        eh = hosts.HostsConf(BASE_ETC)
        eh.add_entry("127.0.0.0", "blah")
        self.assertEqual(eh.get_entry("127.0.0.0"), [["blah"]])
        eh.add_entry("127.0.0.3", "blah", "blah2", "blah3")
        self.assertEqual(
            eh.get_entry("127.0.0.3"), [["blah", "blah2", "blah3"]]
        )

    def test_del(self):
        eh = hosts.HostsConf(BASE_ETC)
        eh.add_entry("127.0.0.0", "blah")
        self.assertEqual(eh.get_entry("127.0.0.0"), [["blah"]])

        eh.del_entries("127.0.0.0")
        self.assertEqual(eh.get_entry("127.0.0.0"), [])


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