[RL] Refactor NVFP4 shuffling/swizzling to in-place replacement (#22204)

test/registered/backends/test_flashinfer_trtllm_gen_moe_backend.py

@@ -157,6 +157,49 @@ class FlashinferTrtllmGenMoeBackendMXFP8Base:
         self.assertGreater(metrics["score"], 0.93)
 
 
+class FlashinferTrtllmGenMoeBackendNVFP4Base:
+    backend = None
+
+    @classmethod
+    def setUpClass(cls):
+        cls.model = "nvidia/Qwen3-30B-A3B-NVFP4"
+        cls.base_url = DEFAULT_URL_FOR_TEST
+        cls.process = popen_launch_server(
+            cls.model,
+            cls.base_url,
+            timeout=DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
+            env={**os.environ, "SGLANG_ENABLE_JIT_DEEPGEMM": "False"},
+            other_args=[
+                "--moe-runner-backend",
+                cls.backend,
+                "--tp-size",
+                "4",
+                "--ep-size",
+                "4",
+                "--mem-fraction-static",
+                "0.7",
+            ],
+        )
+
+    @classmethod
+    def tearDownClass(cls):
+        kill_process_tree(cls.process.pid)
+
+    def test_gsm8k(self):
+        args = SimpleNamespace(
+            base_url=self.base_url,
+            model=self.model,
+            eval_name="gsm8k",
+            api="completion",
+            max_tokens=512,
+            num_examples=200,
+            num_threads=128,
+        )
+        metrics = run_eval(args)
+        print(f"{metrics=}")
+        self.assertGreater(metrics["score"], 0.89)
+
+
 class TestFlashinferTrtllmGenMoeBackendFP8(
     FlashinferTrtllmGenMoeBackendFP8Base, CustomTestCase
 ):
@@ -175,6 +218,12 @@ class TestFlashinferTrtllmGenMoeBackendBF16(
     backend = "flashinfer_trtllm"
 
 
+class TestFlashinferTrtllmGenMoeBackendNVFP4(
+    FlashinferTrtllmGenMoeBackendNVFP4Base, CustomTestCase
+):
+    backend = "flashinfer_trtllm"
+
+
 class TestFlashinferTrtllmGenMoeBackendFP8Routed(
     FlashinferTrtllmGenMoeBackendFP8Base, CustomTestCase
 ):
@@ -193,5 +242,11 @@ class TestFlashinferTrtllmGenMoeBackendBF16Routed(
     backend = "flashinfer_trtllm_routed"
 
 
+class TestFlashinferTrtllmGenMoeBackendNVFP4Routed(
+    FlashinferTrtllmGenMoeBackendNVFP4Base, CustomTestCase
+):
+    backend = "flashinfer_trtllm_routed"
+
+
 if __name__ == "__main__":
     unittest.main()