Use dtype to control generate (#1082)

Co-authored-by: zhyncs <me@zhyncs.com>

test/lang/test_srt_backend.py

@@ -1,10 +1,10 @@
-import json
 import unittest
 
 import sglang as sgl
 from sglang.test.test_programs import (
     test_decode_int,
     test_decode_json_regex,
+    test_dtype_gen,
     test_expert_answer,
     test_few_shot_qa,
     test_mt_bench,
@@ -59,6 +59,9 @@ class TestSRTBackend(unittest.TestCase):
     def test_regex(self):
         test_regex()
 
+    def test_dtype_gen(self):
+        test_dtype_gen()
+
 
 if __name__ == "__main__":
     unittest.main()