feat: add basic postfix config helpers

tests/test_postfix.py

@@ -0,0 +1,54 @@
+# -*- coding: utf-8; -*-
+
+from unittest import TestCase
+from unittest.mock import MagicMock
+
+from wuttamess import postfix as mod
+
+
+class TestSetConfig(TestCase):
+
+    def test_basic(self):
+        c = MagicMock()
+        mod.set_config(c, 'foo', 'bar')
+        c.run.assert_called_once_with("postconf -e 'foo=bar'")
+
+
+class TestSetMyhostname(TestCase):
+
+    def test_basic(self):
+        c = MagicMock()
+        mod.set_myhostname(c, 'test.example.com')
+        c.run.assert_called_once_with("postconf -e 'myhostname=test.example.com'")
+
+
+class TestSetMyorigin(TestCase):
+
+    def test_basic(self):
+        c = MagicMock()
+        mod.set_myorigin(c, 'example.com')
+        c.run.assert_called_once_with("postconf -e 'myorigin=example.com'")
+
+
+class TestSetMydestination(TestCase):
+
+    def test_basic(self):
+        c = MagicMock()
+        mod.set_mydestination(c, 'example.com', 'test.example.com', 'localhost')
+        c.run.assert_called_once_with("postconf -e 'mydestination=example.com, test.example.com, localhost'")
+
+
+class TestSetMynetworks(TestCase):
+
+    def test_basic(self):
+        c = MagicMock()
+        mod.set_mynetworks(c, '127.0.0.0/8', '[::1]/128')
+        c.run.assert_called_once_with("postconf -e 'mynetworks=127.0.0.0/8 [::1]/128'")
+
+
+class TestSetRelayhost(TestCase):
+
+    def test_basic(self):
+        c = MagicMock()
+        mod.set_relayhost(c, 'mail.example.com')
+        c.run.assert_called_once_with("postconf -e 'relayhost=mail.example.com'")