test: add test for kraken balance response parsing

part of #11118

tests/exchange_online/test_ccxt_compat.py

@@ -114,6 +114,19 @@ class TestCCXTExchange:
         else:
             pytest.skip(f"No sample Trades available for exchange {exchange_name}")
 
+    def test_ccxt_balances_parse(self, exchange: EXCHANGE_FIXTURE_TYPE):
+        exch, exchange_name = exchange
+        if balance_response := EXCHANGES[exchange_name].get("sample_balances"):
+            balances = exch._api.parse_balance(balance_response["exchange_response"])
+            expected = balance_response["expected"]
+            for currency, balance in expected.items():
+                assert currency in balances
+                assert isinstance(balance, dict)
+                assert balance == balances[currency]
+            pass
+        else:
+            pytest.skip(f"No sample Balances available for exchange {exchange_name}")
+
     def test_ccxt_fetch_tickers(self, exchange: EXCHANGE_FIXTURE_TYPE):
         exch, exchangename = exchange
         pair = EXCHANGES[exchangename]["pair"]