add tests

online-tests/test_online_login.py

@@ -0,0 +1,44 @@
+import pytest
+import imaplib
+import smtplib
+
+
+class TestDovecot:
+    def test_login_ok(self, imap, gencreds):
+        user, password = gencreds()
+        imap.connect()
+        imap.login(user, password)
+        # verify it works on another connection
+        imap.connect()
+        imap.login(user, password)
+
+    def test_login_fail(self, imap, gencreds):
+        user, password = gencreds()
+        imap.connect()
+        imap.login(user, password)
+        imap.connect()
+        with pytest.raises(imaplib.IMAP4.error) as excinfo:
+            imap.login(user, password + "wrong")
+        assert "AUTHENTICATIONFAILED" in str(excinfo)
+
+
+class TestPostfix:
+    def test_login_ok(self, smtp, gencreds):
+        user, password = gencreds()
+        smtp.connect()
+        smtp.login(user, password)
+        # verify it works on another connection
+        smtp.connect()
+        smtp.login(user, password)
+
+    def test_login_fail(self, smtp, gencreds):
+        user, password = gencreds()
+        smtp.connect()
+        smtp.login(user, password)
+        smtp.connect()
+        with pytest.raises(smtplib.SMTPAuthenticationError) as excinfo:
+            smtp.login(user, password + "wrong")
+        assert excinfo.value.smtp_code == 535
+        assert "authentication failed" in str(excinfo)
+
+