add a failing test for Autocrypt Key Transfer failing to extract a private key from an incoming ASM message

python/src/deltachat/account.py

@@ -306,10 +306,17 @@ class Account(object):
         self._imex_completed.wait()
 
     def initiate_key_transfer(self):
-        """initiate Autocrypt key transfer by sending a self-sent message.
-
+        """return setup code after a Autocrypt setup message
+        has been successfully sent to our own e-mail address ("self-sent message").
+        If sending out was unsuccessful, a RuntimeError is raised.
         """
-        return from_dc_charpointer(lib.dc_initiate_key_transfer(self._dc_context))
+        self.check_is_configured()
+        if not self._threads.is_started():
+            raise RuntimeError("threads not running, can not send out")
+        res = lib.dc_initiate_key_transfer(self._dc_context)
+        if res == ffi.NULL:
+            raise RuntimeError("could not send out autocrypt setup message")
+        return from_dc_charpointer(res)
 
     def start_threads(self):
         """ start IMAP/SMTP threads (and configure account if it hasn't happened).

python/src/deltachat/message.py

@@ -95,7 +95,11 @@ class Message(object):
 
     def is_setup_message(self):
         """ return True if this message is a setup message. """
-        return lib.dc_is_setupmessage(self._dc_msg)
+        return lib.dc_msg_is_setupmessage(self._dc_msg)
+
+    def continue_key_transfer(self, setup_code):
+        """ extract key and use it as primary key for this account. """
+        lib.dc_continue_key_transfer(self._dc_context, self.id, as_dc_charpointer(setup_code))
 
     @props.with_doc
     def time_sent(self):