Isolate client reasoning normalization in API compatibility adapter

test_api_compat.py

@@ -0,0 +1,16 @@
+import unittest
+from api_compat import normalize_chat,CompatibilityError
+class CompatibilityTests(unittest.TestCase):
+ def test_levels_and_alias_without_mutation(self):
+  for value in ['none','minimal','low','medium','high','xhigh','max','ultra']:
+   request={'model':'any','reasoning_effort':value};body,info=normalize_chat(request)
+   self.assertEqual(request['reasoning_effort'],value)
+   self.assertEqual(body['reasoning_effort'],'max' if value=='ultra' else value)
+   self.assertEqual(info['requested'],value)
+ def test_unset_and_null_do_not_invent_defaults(self):
+  for request in [{},{'reasoning_effort':None}]:
+   self.assertEqual(normalize_chat(request),({},{}))
+ def test_invalid_inputs(self):
+  for value in [True,1,{},[], '', 'MAX', 'x\r\ny']:
+   with self.assertRaises(CompatibilityError):normalize_chat({'reasoning_effort':value})
+  with self.assertRaises(CompatibilityError):normalize_chat({'unknown':1})