Added unit test for config.

tests/test_config.py

@@ -0,0 +1,42 @@
+"""Tests the configuration file parsing."""
+
+from itertools import product
+from random import shuffle
+from string import printable
+from typing import Iterator, Tuple
+from unittest import TestCase
+
+from rcon.config import Config
+
+
+class TestConfig(TestCase):
+    """Test the named tuple Config."""
+
+    def setUp(self):
+        """Sets up test and target data."""
+        chars = list(printable)
+        shuffle(chars)
+        self.passwd = ''.join(chars)
+        self.hosts = [
+            'subsubdomain.subdomain.example.com',
+            'locahost',
+            '127.0.0.1'
+        ]
+        self.ports = range(65_536)
+
+    @property
+    def sockets(self) -> Iterator[Tuple[str, int]]:
+        """Yields (host, port) tuples."""
+        return product(self.hosts, self.ports)
+
+    def test_from_string(self):
+        """Tests the Config.from_string() method."""
+        for host, port in self.sockets:
+            config = Config.from_string(f'{host}:{port}')
+            self.assertEqual(config.host, host)
+            self.assertEqual(config.port, port)
+            self.assertIsNone(config.passwd)
+            config = Config.from_string(f'{self.passwd}@{host}:{port}')
+            self.assertEqual(config.host, host)
+            self.assertEqual(config.port, port)
+            self.assertEqual(config.passwd, self.passwd)