Add extra tests for transactions fields

handler/transactions.py

@@ -78,6 +78,10 @@ class Transactions(util.Base):
         ts = data["timestamp"]
         txid = data["transaction_id"]
         txtype = data["transaction_type"]
+        if "amount" not in data:
+            return
+        if "currency" not in data:
+            return
         amount = data["amount"]
         if amount <= 0:
             self.log.info(f"Ignoring transaction with negative/zero amount: {txid}")