Add tests for hostname

1 files changed, 136 insertions, 0 deletions

diff --git a/src/tests/test_host_name.py b/src/tests/test_host_name.py
new file mode 100644
index 000000000..3df1f975c
--- /dev/null
+++ b/src/tests/test_host_name.py
@@ -0,0 +1,136 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2018 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+#
+
+import os
+import tempfile
+import unittest
+from unittest import TestCase, mock
+
+from vyos import ConfigError
+try:
+    from src.conf_mode import host_name
+except ModuleNotFoundError:  # for unittest.main()
+    import sys
+    sys.path.append(os.path.join(os.path.dirname(__file__), '../..'))
+    from src.conf_mode import host_name
+
+
+class TestHostName(TestCase):
+
+    def test_get_config(self):
+        tests = [
+            {'name': 'empty_hostname_and_domain',
+             'host-name': '',
+             'domain-name': '',
+             'expected': {"hostname": 'vyos', "domain": '', "fqdn": 'vyos'}},
+            {'name': 'empty_hostname',
+             'host-name': '',
+             'domain-name': 'localdomain',
+             'expected': {"hostname": 'vyos', "domain": 'localdomain', "fqdn": 'vyos.localdomain'}},
+            {'name': 'has_hostname',
+             'host-name': 'router',
+             'domain-name': '',
+             'expected': {"hostname": 'router', "domain": '', "fqdn": 'router'}},
+            {'name': 'has_hostname_and_domain',
+             'host-name': 'router',
+             'domain-name': 'localdomain',
+             'expected': {"hostname": 'router', "domain": 'localdomain', "fqdn": 'router.localdomain'}},
+        ]
+        for t in tests:
+            def mocked_return_value(path, default=None):
+                return t[path.split()[1]]
+
+            with self.subTest(msg=t['name'], hostname=t['host-name'], domain=t['domain-name'], expected=t['expected']):
+                with mock.patch('vyos.config.Config.return_value', side_effect=mocked_return_value):
+                    actual = host_name.get_config()
+                    self.assertEqual(actual, t['expected'])
+
+
+    def test_verify(self):
+        tests = [
+            {'name': 'valid_hostname',
+             'config': {"hostname": 'vyos', "domain": 'localdomain', "fqdn": 'vyos.localdomain'},
+             'expected': None},
+            {'name': 'invalid_hostname',
+             'config': {"hostname": 'vyos..', "domain": '', "fqdn": ''},
+             'expected': ConfigError},
+            {'name': 'invalid_hostname_length',
+             'config': {"hostname": 'a'*64, "domain": '', "fqdn": ''},
+             'expected': ConfigError}
+        ]
+        for t in tests:
+            with self.subTest(msg=t['name'], config=t['config'], expected=t['expected']):
+                if t['expected'] is not None:
+                    with self.assertRaises(t['expected']):
+                        host_name.verify(t['config'])
+                else:
+                    host_name.verify(t['config'])
+
+    def test_generate(self):
+        tests = [
+            {'name': 'valid_hostname',
+             'config': {"hostname": 'router', "domain": 'localdomain', "fqdn": 'vyos.localdomain'},
+             'expected': ['127.0.0.1       localhost debian',
+                          '::1             localhost ip6-localhost ip6-loopback',
+                          'fe00::0         ip6-localnet',
+                          'ff00::0         ip6-mcastprefix',
+                          'ff02::1         ip6-allnodes',
+                          'ff02::2         ip6-allrouters',
+                          '127.0.1.1	  vyos	 #vyatta entry']}
+        ]
+        for t in tests:
+            with self.subTest(msg=t['name'], tasks=t['config'], expected=t['expected']):
+                m = mock.MagicMock(return_value=b'localhost')
+                with mock.patch('subprocess.check_output', m):
+                    host_name.hosts_file = tempfile.mkstemp()[1]
+                    with open(host_name.hosts_file, 'w') as f:
+                        f.writelines(['127.0.0.1       localhost debian\n',
+                                      '::1             localhost ip6-localhost ip6-loopback\n',
+                                      'fe00::0         ip6-localnet\n',
+                                      'ff00::0         ip6-mcastprefix\n',
+                                      'ff02::1         ip6-allnodes\n',
+                                      'ff02::2         ip6-allrouters\n',
+                                      '127.0.1.1	  vyos	 #vyatta entry'])
+                    host_name.generate(t['config'])
+                    if len(t['expected']) > 0:
+                        self.assertTrue(os.path.isfile(host_name.hosts_file))
+                        with open(host_name.hosts_file) as f:
+                            actual = f.read()
+                            self.assertEqual(
+                                t['expected'], actual.splitlines())
+                        os.remove(host_name.hosts_file)
+                    else:
+                        self.assertFalse(os.path.isfile(host_name.hosts_file))
+
+
+    def test_apply(self):
+        tests = [
+            {'name': 'valid_hostname',
+             'config': {"hostname": 'router', "domain": 'localdomain', "fqdn": 'vyos.localdomain'},
+             'expected': [mock.call('hostnamectl set-hostname vyos.localdomain'),
+                          mock.call('systemctl restart rsyslog.service')]}
+        ]
+        for t in tests:
+            with self.subTest(msg=t['name'], c=t['config'], expected=t['expected']):
+                with mock.patch('os.system') as os_system:
+                    host_name.apply(t['config'])
+                    os_system.assert_has_calls(t['expected'])
+
+
+if __name__ == "__main__":
+    unittest.main()