fix: specify ChainscanClientError for API failure handling in SmartContract

Author: VaitaR

aiochainscan/domain/contract.py

@@ -15,6 +15,7 @@
 
 from ..core.method import Method
 from ..decode import decode_log_data, decode_transaction_input
+from ..exceptions import ChainscanClientError
 
 
 class SmartContract:
@@ -163,7 +164,7 @@ async def from_address(
                 if implementation_address:
                     implementation_address = implementation_address.lower()
 
-        except Exception:  # noqa: BLE001 - Any API failure should fallback to regular ABI fetch
+        except ChainscanClientError:
             # If CONTRACT_SOURCE fails, continue with regular ABI fetch
             pass
 

tests/test_contract_api.py

@@ -13,6 +13,7 @@
 from aiochainscan.core.client import ChainscanClient
 from aiochainscan.core.method import Method
 from aiochainscan.domain.contract import DecodedEvent, DecodedTransaction, SmartContract
+from aiochainscan.exceptions import ChainscanClientError
 
 # Sample ERC20 ABI (minimal for testing)
 SAMPLE_ERC20_ABI = [
@@ -176,7 +177,7 @@ async def test_from_address_source_fails(self, mock_client):
         """Test graceful fallback when CONTRACT_SOURCE fails."""
         # Mock CONTRACT_SOURCE to fail, but ABI succeeds
         mock_client.call.side_effect = [
-            Exception('Source not available'),  # CONTRACT_SOURCE fails
+            ChainscanClientError('Source not available'),  # CONTRACT_SOURCE fails
             json.dumps(SAMPLE_ERC20_ABI),  # CONTRACT_ABI succeeds
         ]