Add test framework to test

- Mail encryption (when expected)
- Introducer listing, adding and removing
- Locals listing, adding and removing

e2e-tests/tests/10_basic.sh

@@ -1,18 +1,15 @@
 #!/usr/bin/bash
 
-echo "Basic: Test if MTA is working"
+# source some functions
+. common.sh
 
-adduser --shell /bin/bash --disabled-password --gecos "" mtatest
-echo "test mail" | sendmail mtatest@example.com
+test_header "Basic: Test if MTA is working"
 
-sleep 1
+create_unix_user mtatest
+send_test_mail mtatest@example.com
 
-if [ -f /var/mail/mtatest ] ; then
-  RESULT_CODE=0
-else
-  RESULT_CODE=1 
-fi
+RESULT_CODE=$(expect_mail mtatest delivered)
 
-deluser --remove-home mtatest
+delete_unix_user mtatest
 
 exit $RESULT_CODE