[Perf] Fork-safe import: no CUDA context at import time, lighter argument parsing (#40201)

test/registered/unit/function_call/test_function_call_parser.py

@@ -34,6 +34,7 @@ from sglang.srt.function_call.lfm2_detector import Lfm2Detector
 from sglang.srt.function_call.ling3_detector import Ling3Detector
 from sglang.srt.function_call.llama32_detector import Llama32Detector
 from sglang.srt.function_call.mistral_detector import MistralDetector
+from sglang.srt.function_call.parser_names import TOOL_CALL_PARSER_NAMES
 from sglang.srt.function_call.pythonic_detector import PythonicDetector
 from sglang.srt.function_call.qwen3_coder_detector import Qwen3CoderDetector
 from sglang.srt.function_call.utils import get_schema_properties
@@ -6013,5 +6014,15 @@ class TestTopLevelCompositeToolSchema(unittest.TestCase):
         self.assertEqual(json.loads(arguments), self.expected)
 
 
+class TestToolCallParserNames(unittest.TestCase):
+    def test_matches_registry(self):
+        # `server_args` builds the --tool-call-parser choices from this list to
+        # keep the registry, and its dependencies, out of argument parsing.
+        self.assertEqual(
+            sorted(TOOL_CALL_PARSER_NAMES),
+            sorted(FunctionCallParser.ToolCallParserEnum),
+        )
+
+
 if __name__ == "__main__":
     unittest.main()