fix: validate Shenwan constituent coverage

tests/test_market_mode.py

@@ -5,6 +5,8 @@ import unittest
 from datetime import datetime, timedelta, timezone
 from pathlib import Path
 
+from tushare_client import _sector_coverage_issue
+
 
 def load_method(name: str):
     source = Path("server.py").read_text(encoding="utf-8")
@@ -19,7 +21,11 @@ def load_method(name: str):
         and node.name == name
     )
     module = ast.Module(body=[method], type_ignores=[])
-    namespace = {"datetime": datetime, "Any": object}
+    namespace = {
+        "datetime": datetime,
+        "Any": object,
+        "_sector_coverage_issue": _sector_coverage_issue,
+    }
     exec(compile(ast.fix_missing_locations(module), "server.py", "exec"), namespace)
     return namespace[name]