MessagesFound SIGNAL is not emited

PRECONDITIONS:
1. Construct a message
2. Add message to message store.

STEPS LEADING TO PROBLEM:
1. Construct a message
2. Add the message to message store
3. Query message with message filter and body as in parameters.
4. queryMessage returns TRUE.
5. messagesFound SIGNAL is not emitted. spy count is 0.

EXPECTED OUTCOME:
1. messagesFound SIGNAL has to be emitted.
2. spy count is 0

ACTUAL OUTCOME:
1. Message is added to message store
2. queryMessages API returns True.
3. messagesFound SIGNAL is not emitted.
4. spy count is 0.