Post postWithoutRecipient = createPost(Optional.<String>absent());
memoryDatabase.storePost(postWithoutRecipient);
assertThat(memoryDatabase.getDirectedPosts(RECIPIENT_ID),
Post postWithoutRecipient = createPost(Optional.<String>absent());
memoryDatabase.storePost(postWithoutRecipient);
assertThat(memoryDatabase.getDirectedPosts(RECIPIENT_ID),