balance_store.fetch_balances(tag="foo")
self.assertEqual(0, balance_store.all["ETC"].total)
self.assertListEqual(["USDT", "XVG", "XMR", "ETC"], list(balance_store.currencies()))
balance_store.fetch_balances(tag="foo")
self.assertEqual(0, balance_store.all["ETC"].total)
self.assertListEqual(["USDT", "XVG", "XMR", "ETC"], list(balance_store.currencies()))