+ static void assertExpectedNumberOfMessagesForUsers(MultiValueMap<User, Ranking> receivedMessages)
+ {
+ assertThat(countMessagesForUser(PETER, receivedMessages));
+ assertThat(countMessagesForUser(KLAUS, receivedMessages));
+ }
+
+ static int countMessagesForUser(User user, MultiValueMap<User, Ranking> messagesForUsers)
+ {
+ return messagesForUsers.get(user).size();
+ }
+
+