fix: improve domain resolver handling in ApiClient and clean up test formatting

Author: kishore7snehil

src/auth0_api_python/api_client.py

@@ -143,6 +143,7 @@ async def _resolve_allowed_domains(
             allowed_domains = self._allowed_domains
         # Dynamic resolver mode
         elif callable(self._allowed_domains):
+            resolver = self._allowed_domains
             # Build resolver context
             context = {
                 'request_url': request_url,
@@ -152,7 +153,7 @@ async def _resolve_allowed_domains(
 
             # Invoke resolver (supports both sync and async resolvers)
             try:
-                result = self._allowed_domains(context)
+                result = resolver(context)
                 if asyncio.iscoroutine(result) or asyncio.isfuture(result):
                     result = await result
             except Exception as e:

tests/test_utils.py

@@ -65,7 +65,7 @@ def test_normalize_domain_custom_domain():
 def test_normalize_domain_multiple_slashes():
     """Test normalization with multiple trailing slashes."""
     assert normalize_domain("tenant.auth0.com///") == "https://tenant.auth0.com/"
-    
+
 
 def test_normalize_domain_rejects_path():
     """Test that domain with path segments is rejected."""