Fix Test* mixin classes being collected as standalone pytest tests (#20417)

python/sglang/test/kits/ebnf_constrained_kit.py

@@ -3,7 +3,8 @@ import json
 import requests
 
 
-class TestEBNFConstrainedMixin:
+class EBNFConstrainedMixin:
+
     ebnf_grammar = 'root ::= "test"'  # Default grammar
 
     def _run_decode_ebnf(

python/sglang/test/kits/json_constrained_kit.py

@@ -5,7 +5,8 @@ import openai
 import requests
 
 
-class TestJSONConstrainedMixin:
+class JSONConstrainedMixin:
+
     json_schema = json.dumps(
         {
             "type": "object",

python/sglang/test/kits/regex_constrained_kit.py

@@ -3,7 +3,8 @@ import json
 import requests
 
 
-class TestRegexConstrainedMixin:
+class RegexConstrainedMixin:
+
     def _run_decode_regex(
         self,
         regex,

python/sglang/test/test_utils.py

@@ -2056,6 +2056,7 @@ def _distributed_worker(rank, world_size, backend, port, func, result_queue, kwa
 
 
 class CustomTestCase(unittest.TestCase):
+
     def _callTestMethod(self, method):
         max_retry = envs.SGLANG_TEST_MAX_RETRY.get()
         if max_retry is None: