tests: Add "create email test"

This is the first test that actually creates a (local) email and
syncs. We check the result of the sync operation, to see if the
server has actually been assigning a proper UID to the email and
bail out if not.

This test therefore excercises our ability to properly detect the
new UID of an APPENDED email. Obviously we still need some
IMAP<->IMAP tests too, but since this is the same codepath being
used for APPENDs in that case, it could also help to detect
instabilities there.

In order to get this test in, the OLITestLib got a few new helper
functions:
- delete_maildir
- create_mail
- get_maildir_uids

The test passes here. I invoke it via:

python -m unittest test.tests.test_01_basic.TestBasicFunctions.test_04_createmail

or run python setup.py test, to run the whole suite.

Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>

test/tests/test_01_basic.py

@@ -31,6 +31,7 @@ def setUpModule():
 
 def tearDownModule():
     logging.info("Tear Down test module")
+    # comment out next line to keep testdir after test runs. TODO: make nicer
     OLITestLib.delete_test_dir()
 
 #Stuff that can be used
@@ -80,7 +81,7 @@ class TestBasicFunctions(unittest.TestCase):
         #logging.warn("%s %s "% (code, res))
         self.assertEqual(res, "")
         boxes, mails = OLITestLib.count_maildir_mails('')
-        self.assertTrue((boxes, mails)==(2,0), msg="Expected 2 folders and 0"
+        self.assertTrue((boxes, mails)==(2,0), msg="Expected 2 folders and 0 "
             "mails, but sync led to {} folders and {} mails".format(
                 boxes, mails))
 
@@ -101,4 +102,27 @@ class TestBasicFunctions(unittest.TestCase):
         self.assertEqual(mismatch, True, msg="Mismatching nametrans rules did "
             "NOT trigger an 'infinite folder generation' error. Output was:\n"
              "{}".format(res))
+        # Write out default config file again
+        OLITestLib.write_config_file()
 
+    def test_04_createmail(self):
+        """Create mail in OLItest 1, sync, wipe folder sync
+
+        Currently, this will mean the folder will be recreated
+        locally.  At some point when remote folder deletion is
+        implemented, this behavior will change."""
+        OLITestLib.delete_remote_testfolders()
+        OLITestLib.create_maildir('INBOX.OLItest')
+        OLITestLib.create_mail('INBOX.OLItest')
+        code, res = OLITestLib.run_OLI()
+        #logging.warn("%s %s "% (code, res))
+        self.assertEqual(res, "")
+        boxes, mails = OLITestLib.count_maildir_mails('')
+        self.assertTrue((boxes, mails)==(1,1), msg="Expected 1 folders and 1 "
+            "mails, but sync led to {} folders and {} mails".format(
+                boxes, mails))
+        # The local Mail should have been assigned a proper UID now, check!
+        uids = OLITestLib.get_maildir_uids('INBOX.OLItest')
+        self.assertFalse (None in uids, msg = "All mails should have been "+ \
+            "assigned the IMAP's UID number, but {} messages had no valid ID "\
+            .format(len([None for x in uids if x==None])))