chore: remove unused imports and add missing test assertion

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: slowbackspace

blockfrost/api/metrics.py

@@ -1,5 +1,4 @@
 import requests
-from dataclasses import dataclass
 from ..utils import request_wrapper
 
 

tests/test_cardano_governance.py

@@ -1,5 +1,5 @@
 import os
-from blockfrost import BlockFrostApi, ApiError
+from blockfrost import BlockFrostApi
 from blockfrost.utils import convert_json_to_object
 
 drep_id = 'drep1yfaaaaa270yjt6tu5skndugekprf5ykv5jshanl0c6gqx5qpstskf'

tests/test_cardano_pools.py

@@ -301,4 +301,4 @@ def test_pool_votes(requests_mock):
 def test_integration_pool_votes():
     if os.getenv('BLOCKFROST_PROJECT_ID_MAINNET'):
         api = BlockFrostApi(project_id=os.getenv('BLOCKFROST_PROJECT_ID_MAINNET'))
-        api.pool_votes(pool_id=pool_id)
+        assert api.pool_votes(pool_id=pool_id) or api.pool_votes(pool_id=pool_id) == []