Improve test coverage.

app/Repositories/Journal/JournalRepository.php

@@ -274,6 +274,16 @@ class JournalRepository implements JournalRepositoryInterface
         return $journal->attachments;
     }
 
+    /**
+     * @param Transaction $transaction
+     *
+     * @return Collection
+     */
+    public function getAttachmentsByTr(Transaction $transaction): Collection
+    {
+        return $transaction->transactionJournal->attachments()->get();
+    }
+
     /**
      * Returns the first positive transaction for the journal. Useful when editing journals.
      *
@@ -574,6 +584,16 @@ class JournalRepository implements JournalRepositoryInterface
         return $events;
     }
 
+    /**
+     * @param Transaction $transaction
+     *
+     * @return Collection
+     */
+    public function getPiggyBankEventsbyTr(Transaction $transaction): Collection
+    {
+        return $transaction->transactionJournal->piggyBankEvents()->get();
+    }
+
     /**
      * Return all tags as strings in an array.
      *