fix type in tests

tests/tools/test_market_tool.py

@@ -7,15 +7,15 @@ from app.markets import MarketAPIsTool
 @pytest.mark.api
 class TestMarketAPIsTool:
     def test_wrapper_initialization(self):
-        market_wrapper = MarketAPIsTool("USD")
+        market_wrapper = MarketAPIsTool("EUR")
         assert market_wrapper is not None
         assert hasattr(market_wrapper, 'get_product')
         assert hasattr(market_wrapper, 'get_products')
         assert hasattr(market_wrapper, 'get_historical_prices')
 
     def test_wrapper_capabilities(self):
-        market_wrapper = MarketAPIsTool("USD")
-        capabilities = []
+        market_wrapper = MarketAPIsTool("EUR")
+        capabilities: list[str] = []
         if hasattr(market_wrapper, 'get_product'):
             capabilities.append('single_product')
         if hasattr(market_wrapper, 'get_products'):
@@ -25,7 +25,7 @@ class TestMarketAPIsTool:
         assert len(capabilities) > 0
 
     def test_market_data_retrieval(self):
-        market_wrapper = MarketAPIsTool("USD")
+        market_wrapper = MarketAPIsTool("EUR")
         btc_product = market_wrapper.get_product("BTC")
         assert btc_product is not None
         assert hasattr(btc_product, 'symbol')
@@ -34,8 +34,8 @@ class TestMarketAPIsTool:
 
     def test_error_handling(self):
         try:
-            market_wrapper = MarketAPIsTool("USD")
+            market_wrapper = MarketAPIsTool("EUR")
             fake_product = market_wrapper.get_product("NONEXISTENT_CRYPTO_SYMBOL_12345")
             assert fake_product is None or fake_product.price == 0
-        except Exception as e:
+        except Exception as _:
             pass