[router] Add PD router mmlu test (#10256)

sgl-router/py_test/e2e/test_regular_router.py

@@ -0,0 +1,146 @@
+import threading
+import time
+from types import SimpleNamespace
+
+import pytest
+import requests
+
+from sglang.test.run_eval import run_eval
+
+
+@pytest.mark.e2e
+def test_mmlu(e2e_router_only_rr, e2e_primary_worker, e2e_model):
+    # Attach the primary worker to a fresh router-only instance (single model)
+    base = e2e_router_only_rr.url
+    r = requests.post(
+        f"{base}/add_worker", params={"url": e2e_primary_worker.url}, timeout=180
+    )
+    r.raise_for_status()
+
+    args = SimpleNamespace(
+        base_url=base,
+        model=e2e_model,
+        eval_name="mmlu",
+        num_examples=64,
+        num_threads=32,
+        temperature=0.1,
+    )
+    metrics = run_eval(args)
+    assert metrics["score"] >= 0.65
+
+
+@pytest.mark.e2e
+def test_add_and_remove_worker_live(e2e_router_only_rr, e2e_primary_worker, e2e_model):
+    base = e2e_router_only_rr.url
+    worker_url = e2e_primary_worker.url
+
+    r = requests.post(f"{base}/add_worker", params={"url": worker_url}, timeout=180)
+    r.raise_for_status()
+
+    with requests.Session() as s:
+        for i in range(8):
+            r = s.post(
+                f"{base}/v1/completions",
+                json={
+                    "model": e2e_model,
+                    "prompt": f"x{i}",
+                    "max_tokens": 1,
+                    "stream": False,
+                },
+                timeout=120,
+            )
+            r.raise_for_status()
+
+    # Remove the worker
+    r = requests.post(f"{base}/remove_worker", params={"url": worker_url}, timeout=60)
+    r.raise_for_status()
+
+
+@pytest.mark.e2e
+def test_lazy_fault_tolerance_live(e2e_router_only_rr, e2e_primary_worker, e2e_model):
+    base = e2e_router_only_rr.url
+    worker = e2e_primary_worker
+
+    r = requests.post(f"{base}/add_worker", params={"url": worker.url}, timeout=180)
+    r.raise_for_status()
+
+    def killer():
+        time.sleep(10)
+        try:
+            worker.proc.terminate()
+        except Exception:
+            pass
+
+    t = threading.Thread(target=killer, daemon=True)
+    t.start()
+
+    args = SimpleNamespace(
+        base_url=base,
+        model=e2e_model,
+        eval_name="mmlu",
+        num_examples=32,
+        num_threads=16,
+        temperature=0.0,
+    )
+    metrics = run_eval(args)
+    assert 0.0 <= metrics["score"] <= 1.0
+
+
+@pytest.mark.e2e
+def test_dp_aware_worker_expansion_and_api_key(
+    e2e_model,
+    e2e_router_only_rr_dp_aware_api,
+    e2e_worker_dp2_api,
+):
+    """
+    Launch a router-only instance in dp_aware mode and a single worker with dp_size=2
+    and API key protection. Verify expansion, auth enforcement, and basic eval.
+    """
+    import os
+
+    router_url = e2e_router_only_rr_dp_aware_api.url
+    worker_url = e2e_worker_dp2_api.url
+    api_key = e2e_router_only_rr_dp_aware_api.api_key
+
+    # Attach worker; router should expand to dp_size logical workers
+    r = requests.post(
+        f"{router_url}/add_worker", params={"url": worker_url}, timeout=180
+    )
+    r.raise_for_status()
+
+    r = requests.get(f"{router_url}/list_workers", timeout=30)
+    r.raise_for_status()
+    urls = r.json().get("urls", [])
+    assert len(urls) == 2
+    assert set(urls) == {f"{worker_url}@0", f"{worker_url}@1"}
+
+    # Verify API key enforcement path-through
+    # 1) Without Authorization -> 401 from backend
+    r = requests.post(
+        f"{router_url}/v1/completions",
+        json={"model": e2e_model, "prompt": "hi", "max_tokens": 1},
+        timeout=60,
+    )
+    assert r.status_code == 401
+
+    # 2) With correct Authorization -> 200
+    r = requests.post(
+        f"{router_url}/v1/completions",
+        json={"model": e2e_model, "prompt": "hi", "max_tokens": 1},
+        headers={"Authorization": f"Bearer {api_key}"},
+        timeout=60,
+    )
+    assert r.status_code == 200
+
+    # Finally, run MMLU eval through the router with auth
+    os.environ["OPENAI_API_KEY"] = api_key
+    args = SimpleNamespace(
+        base_url=router_url,
+        model=e2e_model,
+        eval_name="mmlu",
+        num_examples=64,
+        num_threads=32,
+        temperature=0.1,
+    )
+    metrics = run_eval(args)
+    assert metrics["score"] >= 0.65