[model-gateway] rename py_test to e2e_test (#16454)

sgl-model-gateway/e2e_test/e2e_http/test_e2e_embeddings.py

@@ -0,0 +1,62 @@
+import time
+
+import pytest
+import requests
+
+
+def _wait_for_workers(
+    base_url: str, expected_count: int, timeout: float = 60.0, headers: dict = None
+) -> None:
+    """Poll /workers endpoint until expected number of workers are registered."""
+    start = time.perf_counter()
+    with requests.Session() as session:
+        while time.perf_counter() - start < timeout:
+            try:
+                r = session.get(f"{base_url}/workers", headers=headers, timeout=5)
+                if r.status_code == 200:
+                    workers = r.json().get("workers", [])
+                    if len(workers) >= expected_count:
+                        return
+            except requests.RequestException:
+                pass
+            time.sleep(0.5)
+    raise TimeoutError(
+        f"Expected {expected_count} workers at {base_url}, timed out after {timeout}s"
+    )
+
+
+@pytest.mark.e2e
+def test_embeddings_basic(
+    e2e_router_only_rr, e2e_primary_embedding_worker, e2e_embedding_model
+):
+    base = e2e_router_only_rr.url
+    worker_url = e2e_primary_embedding_worker.url
+
+    # Attach embedding worker to router-only instance
+    r = requests.post(f"{base}/workers", json={"url": worker_url}, timeout=180)
+    assert r.status_code == 202, f"Expected 202 ACCEPTED, got {r.status_code}: {r.text}"
+
+    # Wait for worker to be registered
+    _wait_for_workers(base, expected_count=1, timeout=60.0)
+
+    # Simple embedding request with two inputs
+    payload = {
+        "model": e2e_embedding_model,
+        "input": [
+            "the quick brown fox",
+            "jumps over the lazy dog",
+        ],
+    }
+    r = requests.post(f"{base}/v1/embeddings", json=payload, timeout=120)
+
+    assert r.status_code == 200, f"unexpected status: {r.status_code} {r.text}"
+
+    data = r.json()
+    assert "data" in data and isinstance(data["data"], list)
+    assert len(data["data"]) == 2
+
+    # Validate shape of embedding objects
+    for item in data["data"]:
+        assert "embedding" in item and isinstance(item["embedding"], list)
+        # Ensure non-empty vectors
+        assert len(item["embedding"]) > 0