Send a message to the mock actor, which will be recorded and not processed by the message handler.
You can wrap calls around the evaluation of the mailbox.
A list of LoanWrappers that will be executed around the evaluation of mailboxes
Test to see if this actor has received a particular message.
This method inserts the message at the head of the mailbox.
Return the number of messages this mock actor has received.
Returns the list of messages the mock actor has received.
Send a message to the Actor.