# SPDX-License-Identifier: Apache-2.0 # SPDX-FileCopyrightText: Copyright contributors to the vLLM project """Unit tests for OmniConnectorModelRunnerMixin. These tests use a mock connector (in-memory dict store) and do not require GPU or vLLM runtime. """ from __future__ import annotations import time import unittest from types import SimpleNamespace from typing import Any from unittest.mock import MagicMock, patch import pytest import torch from vllm_omni.outputs import OmniConnectorOutput from vllm_omni.worker.omni_connector_model_runner_mixin import ( OmniConnectorModelRunnerMixin, ) pytestmark = [pytest.mark.core_model, pytest.mark.cpu] # ------------------------------------------------------------------ # # Mock helpers # ------------------------------------------------------------------ # class MockConnector: """In-memory connector for testing (mimics OmniConnectorBase).""" def __init__(self, stage_id: int = 0): self.stage_id = stage_id self._store: dict[str, Any] = {} def put(self, from_stage, to_stage, put_key, data): key = f"{from_stage}_{to_stage}_{put_key}" self._store[key] = data return True, len(str(data)), None def get(self, from_stage, to_stage, get_key, metadata=None): key = f"{from_stage}_{to_stage}_{get_key}" data = self._store.pop(key, None) if data is None: return None return data, len(str(data)) def close(self): pass def _make_model_config( stage_id: int = 0, async_chunk: bool = False, worker_type: str = "ar", custom_func: str | None = None, ) -> SimpleNamespace: return SimpleNamespace( stage_connector_config=None, async_chunk=async_chunk, worker_type=worker_type, custom_process_next_stage_input_func=custom_func, ) def _make_request(req_id: str, external_req_id: str | None = None): r = SimpleNamespace( request_id=req_id, external_req_id=external_req_id or req_id, additional_information=None, prompt_token_ids=[], num_computed_tokens=0, ) return r class MixinHost(OmniConnectorModelRunnerMixin): """Minimal class that mixes in the mixin for testing.""" pass class _FakeTPGroup: def __init__(self, *, world_size: int, rank_in_group: int, follower_result: Any = None): self.world_size = world_size self.rank_in_group = rank_in_group self.follower_result = follower_result self.broadcast_inputs: list[Any] = [] def broadcast_object(self, obj: Any | None = None, src: int = 0): self.broadcast_inputs.append(obj) if self.rank_in_group == src: return obj return self.follower_result # ------------------------------------------------------------------ # # Test cases # ------------------------------------------------------------------ # class TestMixinAsyncChunkSendRecv(unittest.TestCase): """Test 2: Async chunk send/recv + bg threads.""" def test_send_chunk_passes_is_finished_and_connector(self): connector = MockConnector(stage_id=0) sender = MixinHost() sender.init_omni_connectors( vllm_config=None, model_config=_make_model_config(stage_id=0, async_chunk=True), ) sender._omni_connector = connector sender._stage_id = 0 sender._async_chunk = True seen = {} def mock_process(transfer_manager, pooling_output, request, is_finished=False): seen["connector"] = transfer_manager.connector seen["is_finished"] = is_finished return {"data": pooling_output, "finished": is_finished} sender._custom_process_func = mock_process request = _make_request("req-1", "ext-req-1") request.is_finished = lambda: True sender._send_single_request( { "stage_id": 0, "next_stage_id": 1, "request_id": "ext-req-1", "request": request, "pooling_output": {"value": 42}, } ) self.assertIs(seen["connector"], connector) self.assertTrue(seen["is_finished"]) sender.shutdown_omni_connectors() def test_send_chunk_does_not_retry_real_type_error(self): connector = MockConnector(stage_id=0) sender = MixinHost() sender.init_omni_connectors( vllm_config=None, model_config=_make_model_config(stage_id=0, async_chunk=True), ) sender._omni_connector = connector sender._stage_id = 0 sender._async_chunk = True seen = {"calls": 0} def broken_process(transfer_manager, pooling_output, request, is_finished=""): seen["calls"] += 1 return {"data": is_finished + "tail"} sender._custom_process_func = broken_process request = _make_request("req-1", "ext-req-1") request.is_finished = lambda: True ok = sender.send_chunk(request, pooling_output={"value": 42}) self.assertFalse(ok) self.assertEqual(seen["calls"], 1) sender.shutdown_omni_connectors() class TestMixinKVCacheTransfer(unittest.TestCase): """Test 3: KV cache delegation to OmniKVTransferManager.""" def test_send_kv_delegates(self): mock_kvm = MagicMock() mock_kvm.handle_finished_requests_kv_transfer.return_value = ["req-1"] host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(), kv_transfer_manager=mock_kvm, ) result = host.send_kv_cache( finished_reqs={"req-1": {"seq_len": 10, "block_ids": [0]}}, kv_caches=[], block_size=16, cache_dtype="float16", ) self.assertEqual(result, ["req-1"]) mock_kvm.handle_finished_requests_kv_transfer.assert_called_once() host.shutdown_omni_connectors() def test_recv_kv_delegates(self): mock_kvm = MagicMock() mock_kvm.receive_kv_cache_for_request.return_value = ({"layer_blocks": {}}, 100) host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(), kv_transfer_manager=mock_kvm, ) data, size = host.recv_kv_cache("req-1") self.assertIsNotNone(data) self.assertEqual(size, 100) mock_kvm.receive_kv_cache_for_request.assert_called_once() host.shutdown_omni_connectors() def test_receive_multi_kv_fetches_companions_via_mixin(self): mock_kvm = MagicMock() host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(), kv_transfer_manager=mock_kvm, ) host.recv_kv_cache = MagicMock( side_effect=[({"layer_blocks": {"k": [1]}}, 64), ({"layer_blocks": {"k": [2]}}, 32)] ) seen = {} def collect_cfg(request_id, cfg_role_payloads): seen["request_id"] = request_id seen["cfg_role_payloads"] = cfg_role_payloads return {"cfg_text_kv_metadata": {"seq_len": 3}} req = SimpleNamespace( request_id="req-1", sampling_params=SimpleNamespace(cfg_kv_request_ids={"cfg_text": "req-1__cfg_text"}), ) ok = host.receive_multi_kv_cache(req, cfg_kv_collect_func=collect_cfg) self.assertTrue(ok) host.recv_kv_cache.assert_any_call("req-1", target_device=None) host.recv_kv_cache.assert_any_call("req-1__cfg_text", target_device=None) mock_kvm.apply_kv_cache_to_request.assert_called_once_with(req, {"layer_blocks": {"k": [1]}}) self.assertEqual(seen["request_id"], "req-1") self.assertEqual( seen["cfg_role_payloads"], {"cfg_text": ({"layer_blocks": {"k": [2]}}, 32)}, ) self.assertEqual(req.sampling_params.cfg_text_kv_metadata, {"seq_len": 3}) host.shutdown_omni_connectors() def test_receive_multi_kv_skips_inactive_request(self): mock_kvm = MagicMock() host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(), kv_transfer_manager=mock_kvm, ) host.requests = {} host.recv_kv_cache = MagicMock(return_value=({"layer_blocks": {"k": [1]}}, 64)) req = SimpleNamespace(request_id="req-1", sampling_params=None) ok = host.receive_multi_kv_cache(req) self.assertFalse(ok) host.recv_kv_cache.assert_not_called() mock_kvm.apply_kv_cache_to_request.assert_not_called() host.shutdown_omni_connectors() class TestOmniConnectorOutput(unittest.TestCase): """Test 4: Output aggregation across transfer modes.""" def test_output_aggregation(self): host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(), ) host._chunk_ready_req_ids.add("req-1") host._chunk_finished_req_ids.add("req-2") host._local_request_metadata["req-1"] = {"next_stage_prompt_len": 10} host._stage_recv_req_ids.add("req-3") output = host.get_omni_connector_output() self.assertIsInstance(output, OmniConnectorOutput) self.assertEqual(output.chunk_ready_req_ids, {"req-1"}) self.assertEqual(output.chunk_finished_req_ids, {"req-2"}) self.assertEqual(output.request_metadata, {"req-1": {"next_stage_prompt_len": 10}}) self.assertEqual(output.stage_recv_req_ids, {"req-3"}) output2 = host.get_omni_connector_output() self.assertEqual(output2.chunk_ready_req_ids, set()) self.assertEqual(output2.request_metadata, {}) host.shutdown_omni_connectors() class TestMixinNoConnector(unittest.TestCase): """Edge case: mixin works gracefully without a connector.""" def test_no_connector(self): host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(), ) self.assertIsNone(host._omni_connector) results = host.recv_full_payload_inputs(scheduler_output=None) self.assertIsNone(results) sent = host.send_full_payload_outputs(None, {"req-1": {}}) self.assertEqual(sent, []) ok = host.send_chunk(_make_request("req-1"), pooling_output={}) self.assertFalse(ok) output = host.get_omni_connector_output() self.assertIsInstance(output, OmniConnectorOutput) host.shutdown_omni_connectors() class TestFinishedLoadReqsDrain(unittest.TestCase): """Test A1 fix: get_omni_connector_output drains _finished_load_reqs.""" def test_finished_load_reqs_flow_to_chunk_ready(self): host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(), ) host._finished_load_reqs.add("req-1") host._finished_load_reqs.add("req-2") output = host.get_omni_connector_output() self.assertIn("req-1", output.chunk_ready_req_ids) self.assertIn("req-2", output.chunk_ready_req_ids) self.assertEqual(len(host._finished_load_reqs), 0) self.assertEqual(len(host._chunk_ready_req_ids), 0) host.shutdown_omni_connectors() class TestLoadCustomFuncSelection(unittest.TestCase): def test_skips_non_payload_stage_input_processors_for_full_payload_mode(self): incompatible_paths = [ "vllm_omni.model_executor.stage_input_processors.mimo_audio.llm2code2wav", "vllm_omni.model_executor.stage_input_processors.mammoth_moda2.ar2dit", "vllm_omni.model_executor.stage_input_processors.cosyvoice3.text2flow", "vllm_omni.model_executor.stage_input_processors.glm_image.ar2diffusion", ] for func_path in incompatible_paths: selected_path, func = MixinHost._load_custom_func( SimpleNamespace( async_chunk=False, custom_process_input_func=func_path, custom_process_next_stage_input_func=None, ) ) assert selected_path != func_path assert func is None or MixinHost._is_connector_payload_builder(func) class TestFullPayloadSendWithCustomFunc(unittest.TestCase): """Test B4: send_full_payload_outputs with full_payload_mode custom process func.""" def test_full_payload_send_passes_is_finished_and_connector(self): seen = {} def full_payload_func(transfer_manager, pooling_output, request, is_finished=False): seen["connector"] = transfer_manager.connector seen["is_finished"] = is_finished seen["data"] = pooling_output seen["rid"] = request.request_id if request else None return {"processed": True, "finished": is_finished} host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(), ) host._omni_connector = MockConnector(stage_id=0) host._stage_id = 0 host._custom_process_func = full_payload_func req = _make_request("req-1") req.is_finished = lambda: True sent = host.send_full_payload_outputs( scheduler_output=None, outputs={"req-1": ({"raw": 100}, req)}, ) self.assertEqual(sent, ["req-1"]) self.assertEqual( seen, { "connector": host._omni_connector, "is_finished": True, "data": {"raw": 100}, "rid": "req-1", }, ) host.shutdown_omni_connectors() def test_accumulate_and_flush(self): call_log = [] def full_payload_func(transfer_manager, pooling_output, request): call_log.append(request.request_id if request else None) return {"processed": True} host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(), ) host._omni_connector = MockConnector(stage_id=0) host._stage_id = 0 host._custom_process_func = full_payload_func req = _make_request("req-1") host.accumulate_full_payload_output("req-1", {"raw": 42}, req) self.assertEqual(len(host._pending_full_payload_send), 1) host.flush_full_payload_outputs({"req-1"}) self.assertEqual(len(host._pending_full_payload_send), 0) self.assertEqual(len(call_log), 1) self.assertEqual(call_log[0], "req-1") time.sleep(0.1) host.shutdown_omni_connectors() class TestKVSentReqIdsAccumulation(unittest.TestCase): """Test that kv_sent_req_ids accumulates results from send_kv_cache.""" def test_kv_sent_accumulation(self): mock_kvm = MagicMock() mock_kvm.handle_finished_requests_kv_transfer.return_value = ["req-1", "req-2"] host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(), kv_transfer_manager=mock_kvm, ) host.send_kv_cache( finished_reqs={"req-1": {}, "req-2": {}}, kv_caches=[], block_size=16, cache_dtype="float16", ) output = host.get_omni_connector_output() self.assertIn("req-1", output.kv_sent_req_ids) self.assertIn("req-2", output.kv_sent_req_ids) output2 = host.get_omni_connector_output() self.assertEqual(output2.kv_sent_req_ids, []) host.shutdown_omni_connectors() class TestChunkStreamCompletedGuard(unittest.TestCase): """Test that register_chunk_recv is skipped after finish sentinel. This validates the fix for the race condition where the scheduling coordinator re-registers a request for chunk polling after its upstream chunk stream has already finished (is_finished sentinel received), causing the bg recv thread to poll for a non-existent shared-memory segment (e.g. ``_0_7`` when only 7 chunks 0–6 exist). """ def _make_host(self, stage_id: int = 1) -> MixinHost: host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(stage_id=stage_id, async_chunk=True), ) host._omni_connector = MockConnector(stage_id=stage_id) host._stage_id = stage_id host._async_chunk = True return host def test_register_blocked_after_finish_sentinel(self): """register_chunk_recv must be a no-op after the finish sentinel.""" host = self._make_host(stage_id=1) req = _make_request("req-1", "ext-req-1") # Simulate the bg thread having received the finish sentinel: with host._lock: host._chunk_stream_completed.add("req-1") # Now try to re-register — this mimics the coordinator asking # the model runner to poll for the next (non-existent) chunk. host.register_chunk_recv(req) # The request must NOT appear in _pending_load_reqs self.assertNotIn( "req-1", host._pending_load_reqs, "register_chunk_recv should skip requests whose chunk stream is already complete", ) host.shutdown_omni_connectors() def test_register_allowed_before_finish(self): """register_chunk_recv works normally before finish sentinel.""" host = self._make_host(stage_id=1) req = _make_request("req-1", "ext-req-1") host.register_chunk_recv(req) self.assertIn( "req-1", host._pending_load_reqs, "register_chunk_recv should add request to pending when stream is not yet complete", ) host.shutdown_omni_connectors() def test_finish_sentinel_populates_completed_set(self): """Receiving is_finished=True adds to _chunk_stream_completed.""" host = self._make_host(stage_id=1) # Simulate _poll_single_request receiving is_finished=True req_id = "req-1" with host._lock: host._chunk_finished_req_ids.add(req_id) host._chunk_stream_completed.add(req_id) host._local_stage_payload_cache[req_id] = {"finished": True} host._local_request_metadata[req_id] = {} host._finished_load_reqs.add(req_id) host._pending_load_reqs.pop(req_id, None) self.assertIn(req_id, host._chunk_stream_completed) # Subsequent register_chunk_recv should be blocked req = _make_request(req_id, f"ext-{req_id}") host.register_chunk_recv(req) self.assertNotIn(req_id, host._pending_load_reqs) host.shutdown_omni_connectors() def test_stage_0_always_skipped(self): """Stage-0 has no upstream, register_chunk_recv is always no-op.""" host = self._make_host(stage_id=0) host._stage_id = 0 req = _make_request("req-1") host.register_chunk_recv(req) self.assertNotIn("req-1", host._pending_load_reqs) host.shutdown_omni_connectors() def test_full_payload_recv_guard_still_works(self): """Pre-existing guard: staged full-payload results prevent registration.""" host = self._make_host(stage_id=1) with host._lock: host._stage_recv_req_ids.add("req-1") req = _make_request("req-1", "ext-req-1") host.register_chunk_recv(req) self.assertNotIn("req-1", host._pending_load_reqs) host.shutdown_omni_connectors() class TestCleanupFinishedRequest(unittest.TestCase): """Test cleanup_finished_request frees per-request mixin state.""" def _make_host(self, stage_id: int = 1) -> MixinHost: host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(stage_id=stage_id, async_chunk=True), ) host._omni_connector = MockConnector(stage_id=stage_id) host._stage_id = stage_id host._async_chunk = True return host def test_cleanup_removes_all_state(self): """cleanup_finished_request removes all tracking dicts/sets.""" host = self._make_host(stage_id=1) req_id = "req-1" ext_id = "ext-req-1" # Simulate state accumulated during a request's lifetime host._request_ids_mapping[req_id] = ext_id host._put_req_chunk[ext_id] = 5 host._get_req_chunk[req_id] = 3 host._send_side_request_payload[ext_id] = {"some": "data"} host._code_prompt_token_ids[ext_id] = [[1, 2, 3]] host._cached_ic[ext_id] = 16 host._chunk_stream_completed.add(req_id) host._stage_recv_req_ids.add(req_id) host._local_stage_payload_cache[req_id] = {"engine_inputs": {}} host._local_request_metadata[req_id] = {"prompt_len": 10} # Cleanup host.cleanup_finished_request(req_id) # All state should be gone self.assertNotIn(req_id, host._request_ids_mapping) self.assertNotIn(ext_id, host._put_req_chunk) self.assertNotIn(req_id, host._get_req_chunk) self.assertNotIn(ext_id, host._send_side_request_payload) self.assertNotIn(ext_id, host._code_prompt_token_ids) self.assertNotIn(ext_id, host._cached_ic) self.assertNotIn(req_id, host._chunk_stream_completed) self.assertNotIn(req_id, host._stage_recv_req_ids) self.assertNotIn(req_id, host._local_stage_payload_cache) self.assertNotIn(req_id, host._local_request_metadata) host.shutdown_omni_connectors() def test_cleanup_removes_per_cycle_ready_state(self): """cleanup_finished_request clears ready/finished carry-over for req-id reuse.""" host = self._make_host(stage_id=1) req_id = "req-1" host._pending_load_reqs[req_id] = _make_request(req_id, "ext-req-1") host._finished_load_reqs.add(req_id) host._chunk_ready_req_ids.add(req_id) host._chunk_finished_req_ids.add(req_id) host.cleanup_finished_request(req_id) self.assertNotIn(req_id, host._pending_load_reqs) self.assertNotIn(req_id, host._finished_load_reqs) self.assertNotIn(req_id, host._chunk_ready_req_ids) self.assertNotIn(req_id, host._chunk_finished_req_ids) host.shutdown_omni_connectors() def test_cleanup_without_mapping(self): """cleanup works for Stage-0 where _request_ids_mapping isn't set.""" host = self._make_host(stage_id=0) host._stage_id = 0 req_id = "req-1" # Stage-0 uses req_id directly (no ext_id mapping) host._put_req_chunk[req_id] = 3 host._get_req_chunk[req_id] = 0 host._cached_ic[req_id] = 4 host.cleanup_finished_request(req_id) self.assertNotIn(req_id, host._put_req_chunk) self.assertNotIn(req_id, host._get_req_chunk) self.assertNotIn(req_id, host._cached_ic) host.shutdown_omni_connectors() def test_deferred_cleanup_removes_cached_ic(self): host = self._make_host(stage_id=1) req_id = "req-1" ext_id = "ext-req-1" host._request_ids_mapping[req_id] = ext_id host._pending_save_counts[ext_id] = 1 host._cached_ic[ext_id] = 8 host.cleanup_finished_request(req_id) self.assertIn(ext_id, host._deferred_send_cleanup) self.assertIn(ext_id, host._cached_ic) host._decrement_pending_save_count(ext_id) self.assertNotIn(ext_id, host._deferred_send_cleanup) self.assertNotIn(ext_id, host._cached_ic) host.shutdown_omni_connectors() def test_prune_inactive_requests_cleans_stale_state_but_keeps_active(self): """Inactive request IDs should be pruned without touching active ones.""" host = self._make_host(stage_id=1) active_req_id = "req-active" stale_req_id = "req-stale" stale_ext_id = "ext-stale" host._request_ids_mapping[active_req_id] = "ext-active" host._request_ids_mapping[stale_req_id] = stale_ext_id host._put_req_chunk[stale_ext_id] = 2 host._get_req_chunk[stale_req_id] = 1 host._finished_load_reqs.add(stale_req_id) host._chunk_ready_req_ids.update({active_req_id, stale_req_id}) host._chunk_finished_req_ids.add(stale_req_id) host._chunk_stream_completed.add(stale_req_id) host._stage_recv_req_ids.add(active_req_id) host._send_side_request_payload[stale_ext_id] = {"stale": True} host._code_prompt_token_ids[stale_ext_id] = [[1, 2, 3]] pruned = host.prune_inactive_requests({active_req_id}) self.assertEqual(pruned, {stale_req_id}) self.assertIn(active_req_id, host._request_ids_mapping) self.assertIn(active_req_id, host._chunk_ready_req_ids) self.assertIn(active_req_id, host._stage_recv_req_ids) self.assertNotIn(stale_req_id, host._request_ids_mapping) self.assertNotIn(stale_ext_id, host._put_req_chunk) self.assertNotIn(stale_req_id, host._get_req_chunk) self.assertNotIn(stale_req_id, host._pending_load_reqs) self.assertNotIn(stale_req_id, host._finished_load_reqs) self.assertNotIn(stale_req_id, host._chunk_ready_req_ids) self.assertNotIn(stale_req_id, host._chunk_finished_req_ids) self.assertNotIn(stale_req_id, host._chunk_stream_completed) self.assertNotIn(stale_req_id, host._stage_recv_req_ids) self.assertNotIn(stale_ext_id, host._send_side_request_payload) self.assertNotIn(stale_ext_id, host._code_prompt_token_ids) host.shutdown_omni_connectors() def test_prune_inactive_requests_keeps_recently_received_full_payload_state(self): """Late bg-thread receives must survive until the scheduler catches up.""" host = self._make_host(stage_id=1) req_id = "req-recv-race" ext_id = "ext-recv-race" host._request_ids_mapping[req_id] = ext_id host._put_req_chunk[ext_id] = 1 host._local_stage_payload_cache[req_id] = {"engine_inputs": {"ids": [1, 2, 3]}} host._local_request_metadata[req_id] = {"next_stage_prompt_len": 3} host._stage_recv_req_ids.add(req_id) pruned = host.prune_inactive_requests(set()) self.assertEqual(pruned, set()) self.assertIn(req_id, host._request_ids_mapping) self.assertIn(req_id, host._local_stage_payload_cache) self.assertIn(req_id, host._local_request_metadata) self.assertIn(req_id, host._stage_recv_req_ids) self.assertIn(ext_id, host._put_req_chunk) # Once the scheduler has consumed the wake-up and the request really # disappears from all protected sets, prune should clean it up. host._stage_recv_req_ids.clear() host._local_stage_payload_cache.clear() host._local_request_metadata.clear() pruned = host.prune_inactive_requests(set()) self.assertEqual(pruned, {req_id}) self.assertNotIn(req_id, host._request_ids_mapping) self.assertNotIn(ext_id, host._put_req_chunk) host.shutdown_omni_connectors() class TestSendChunkCachesMapping(unittest.TestCase): """Test that send_chunk caches internal→external req ID mapping.""" def test_send_chunk_populates_request_ids_mapping(self): """send_chunk should cache the internal→external mapping.""" host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(stage_id=0, async_chunk=True), ) host._omni_connector = MockConnector(stage_id=0) host._stage_id = 0 host._async_chunk = True def mock_process(transfer_manager, pooling_output, request): return {"data": "test", "finished": False} host._custom_process_func = mock_process request = _make_request("internal-1", "external-1") host.send_chunk(request, pooling_output={"v": 1}) # The mapping should be cached self.assertEqual( host._request_ids_mapping.get("internal-1"), "external-1", ) time.sleep(0.1) host.shutdown_omni_connectors() class TestLocalPayloadCacheLifecycle(unittest.TestCase): """Unit tests for the local payload cache API (RFC §2.4).""" def _make_host(self) -> MixinHost: host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(stage_id=0), ) host._omni_connector = MockConnector(stage_id=0) host._stage_id = 0 return host def test_put_get_pop(self): host = self._make_host() payload = {"engine_inputs": {"ids": [1, 2, 3]}} host.put_local_stage_payload("r1", payload) self.assertEqual(host.get_local_stage_payload("r1"), payload) popped = host.pop_local_stage_payload("r1") self.assertEqual(popped, payload) self.assertIsNone(host.get_local_stage_payload("r1")) host.shutdown_omni_connectors() def test_recv_full_payload_inputs_populates_local_cache(self): host = self._make_host() host._omni_connector = MockConnector(stage_id=0) host._stage_id = 0 # Simulate a full payload already staged by the bg recv path with host._lock: host._local_stage_payload_cache["r1"] = {"tok": [10]} host._stage_recv_req_ids.add("r1") host.recv_full_payload_inputs(scheduler_output=None) self.assertEqual(host.get_local_stage_payload("r1"), {"tok": [10]}) host.shutdown_omni_connectors() def test_rank0_only_polls_connector_for_tp_full_payload(self): host = self._make_host() host._omni_connector = MagicMock() host._stage_id = 2 host._local_rank = 0 host._request_ids_mapping["r1"] = "ext-r1" host._get_req_chunk["r1"] = 0 payload = {"tok": [10], "finished": torch.tensor(True)} connector_result = (payload, 123) host._omni_connector.get.return_value = connector_result tp_group = _FakeTPGroup(world_size=2, rank_in_group=0) with patch("vllm_omni.worker.omni_connector_model_runner_mixin.get_tp_group", return_value=tp_group): made_progress = host._poll_single_request("r1") self.assertTrue(made_progress) host._omni_connector.get.assert_called_once_with("1", "2", "ext-r1_1_0") self.assertEqual(tp_group.broadcast_inputs, []) self.assertEqual(host.get_local_stage_payload("r1"), payload) self.assertIn("r1", host._full_payload_pending_broadcast_req_ids) self.assertNotIn("r1", host._stage_recv_req_ids) self.assertIsNone(host.get_local_request_metadata("r1")) host.shutdown_omni_connectors() def test_tp_follower_skips_connector_poll_for_full_payload(self): host = self._make_host() host._omni_connector = MagicMock() host._stage_id = 2 host._local_rank = 1 host._request_ids_mapping["r1"] = "ext-r1" host._get_req_chunk["r1"] = 0 tp_group = _FakeTPGroup(world_size=2, rank_in_group=1) with patch("vllm_omni.worker.omni_connector_model_runner_mixin.get_tp_group", return_value=tp_group): made_progress = host._poll_single_request("r1") self.assertFalse(made_progress) host._omni_connector.get.assert_not_called() self.assertEqual(tp_group.broadcast_inputs, []) self.assertNotIn("r1", host._local_stage_payload_cache) host.shutdown_omni_connectors() def test_recv_full_payload_inputs_broadcasts_tp_leader_results_to_followers(self): host = self._make_host() host._omni_connector = MagicMock() host._stage_id = 2 host._local_rank = 1 host._pending_load_reqs["r1"] = object() payload = {"tok": [10], "finished": torch.tensor(True)} tp_group = _FakeTPGroup(world_size=2, rank_in_group=1, follower_result={"r1": payload}) with patch("vllm_omni.worker.omni_connector_model_runner_mixin.get_tp_group", return_value=tp_group): results = host.recv_full_payload_inputs(scheduler_output=None) self.assertEqual(results, {"r1": payload}) self.assertEqual(host.get_local_stage_payload("r1"), payload) self.assertEqual(host.get_local_request_metadata("r1"), {}) self.assertEqual(host._stage_recv_req_ids, {"r1"}) self.assertNotIn("r1", host._pending_load_reqs) self.assertEqual(tp_group.broadcast_inputs, [None]) host.shutdown_omni_connectors() class TestTPAsyncChunkFanout(unittest.TestCase): def _make_host(self, rank: int) -> MixinHost: host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(stage_id=2, async_chunk=True, worker_type="gen"), ) host._omni_connector = MagicMock() host._stage_id = 2 host._async_chunk = True host._model_mode = "gen" host._local_rank = rank host._request_ids_mapping["r1"] = "ext-r1" host._get_req_chunk["r1"] = 0 return host def test_rank0_only_polls_connector_for_tp_async_chunk(self): host = self._make_host(rank=0) payload = { "codes": {"audio": [10, 11]}, "meta": {"left_context_size": 0, "finished": torch.tensor(False)}, } host._omni_connector.get.return_value = (payload, 123) tp_group = _FakeTPGroup(world_size=2, rank_in_group=0) with patch("vllm_omni.worker.omni_connector_model_runner_mixin.get_tp_group", return_value=tp_group): made_progress = host._poll_single_request("r1") self.assertTrue(made_progress) host._omni_connector.get.assert_called_once_with("1", "2", "ext-r1_1_0") self.assertEqual(host.get_local_stage_payload("r1"), payload) self.assertIn("r1", host._finished_load_reqs) self.assertIn("r1", host._async_chunk_updated_req_ids) self.assertEqual(tp_group.broadcast_inputs, []) host.shutdown_omni_connectors() def test_tp_follower_skips_connector_poll_for_async_chunk(self): host = self._make_host(rank=1) tp_group = _FakeTPGroup(world_size=2, rank_in_group=1) with patch("vllm_omni.worker.omni_connector_model_runner_mixin.get_tp_group", return_value=tp_group): made_progress = host._poll_single_request("r1") self.assertFalse(made_progress) host._omni_connector.get.assert_not_called() self.assertIsNone(host.get_local_stage_payload("r1")) self.assertEqual(tp_group.broadcast_inputs, []) host.shutdown_omni_connectors() def test_get_output_broadcasts_tp_async_chunk_payloads_to_followers(self): host = self._make_host(rank=1) host._pending_load_reqs["r1"] = object() payload = { "code_predictor_codes": [10, 11], "left_context_size": 0, "finished": torch.tensor(True), } packet = { "staged_payloads": {"r1": payload}, "request_metadata": {"r1": {"code_predictor_codes": [10, 11], "left_context_size": 0}}, "newly_finished": {"r1"}, "chunk_finished": {"r1"}, } tp_group = _FakeTPGroup(world_size=2, rank_in_group=1, follower_result=packet) with patch("vllm_omni.worker.omni_connector_model_runner_mixin.get_tp_group", return_value=tp_group): output = host.get_omni_connector_output() self.assertEqual(output.chunk_ready_req_ids, {"r1"}) self.assertEqual(output.chunk_finished_req_ids, {"r1"}) self.assertEqual( output.request_metadata, {"r1": {"code_predictor_codes": [10, 11], "left_context_size": 0}}, ) self.assertEqual(host.get_local_stage_payload("r1"), payload) self.assertNotIn("r1", host._pending_load_reqs) self.assertIn("r1", host._chunk_stream_completed) self.assertEqual(tp_group.broadcast_inputs, [None]) host.shutdown_omni_connectors() class TestKVTransferLifecycle(unittest.TestCase): """Unit tests for KV transfer lifecycle methods.""" def _make_host(self) -> MixinHost: host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(stage_id=0), ) return host def test_mark_drain_ack_complete(self): host = self._make_host() self.assertFalse(host.has_pending_kv_work()) host.mark_kv_transfer("r1", seq_len=100, block_ids=[0, 1, 2]) self.assertTrue(host.has_pending_kv_work()) self.assertTrue(host.is_kv_transfer_triggered("r1")) # Drain moves pending → active pending = host.drain_pending_kv_transfers() self.assertEqual(pending, {"r1": {"seq_len": 100, "block_ids": [0, 1, 2]}}) self.assertIn("r1", host._kv_active_transfers) self.assertTrue(host.has_pending_kv_work()) # Ack moves active → completed host.ack_kv_transfers(["r1"]) self.assertNotIn("r1", host._kv_active_transfers) self.assertIn("r1", host._kv_completed_transfers) # Drain completed completed = host.drain_completed_kv_transfers() self.assertEqual(completed, {"r1"}) self.assertFalse(host.has_pending_kv_work()) host.shutdown_omni_connectors() def test_mark_dedup(self): host = self._make_host() host.mark_kv_transfer("r1", seq_len=100, block_ids=[0]) host.mark_kv_transfer("r1", seq_len=200, block_ids=[0, 1]) # Second mark is a no-op self.assertEqual(host._kv_pending_transfers["r1"]["seq_len"], 100) host.shutdown_omni_connectors() def test_cleanup_removes_kv_state(self): host = self._make_host() host.mark_kv_transfer("r1", seq_len=50, block_ids=[0]) host.drain_pending_kv_transfers() host.cleanup_finished_request("r1") self.assertFalse(host.is_kv_transfer_triggered("r1")) self.assertNotIn("r1", host._kv_active_transfers) self.assertFalse(host.has_pending_kv_work()) host.shutdown_omni_connectors() class TestAsyncPayloadLifecycle(unittest.TestCase): """Regression tests for async payload delivery lifecycle.""" def test_send_side_request_payload_not_cleared_before_payload_is_consumable(self): host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(stage_id=1, async_chunk=True, worker_type="ar"), ) host._request_ids_mapping["r1"] = "r1" payload = { "embed": {"decode": torch.ones(1, 2)}, "ids": {"output": [1]}, "meta": { "finished": torch.tensor(False), "override_keys": [["embed", "decode"], ["ids", "output"]], }, } host._accumulate_payload("r1", dict(payload)) with host._lock: host._finished_load_reqs.add("r1") host.get_omni_connector_output() self.assertIn("r1", host._send_side_request_payload) host.shutdown_omni_connectors() def test_payload_consumable_ignores_token_horizon_only_updates(self): host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(stage_id=1, async_chunk=True, worker_type="ar"), ) payload = { "ids": {"output": [1, 2, 3]}, "embed": {"decode_token_start": 2, "decode_token_end": 3}, "meta": { "finished": torch.tensor(False), "override_keys": [ ["ids", "output"], ["embed", "decode_token_start"], ["embed", "decode_token_end"], ], }, } self.assertFalse(host._payload_is_consumable(payload)) host.shutdown_omni_connectors() def test_payload_consumable_accepts_decode_embeddings(self): host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(stage_id=1, async_chunk=True, worker_type="ar"), ) payload = { "ids": {"output": [1, 2, 3]}, "embed": {"decode": torch.ones(1, 2)}, "meta": {"finished": torch.tensor(False)}, } self.assertTrue(host._payload_is_consumable(payload)) host.shutdown_omni_connectors() def test_ar_metadata_only_followup_chunk_does_not_rewake_request(self): host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(stage_id=1, async_chunk=True, worker_type="ar"), ) host._omni_connector = MagicMock() host._stage_id = 1 host._async_chunk = True host._model_mode = "ar" host._request_ids_mapping["r1"] = "ext-r1" host._get_req_chunk["r1"] = 0 host._omni_connector.get.side_effect = [ ( { "embed": {"decode": torch.ones(1, 2)}, "meta": {"finished": torch.tensor(False)}, }, 1, ), ( { "meta": {"next_stage_prompt_len": 7, "finished": torch.tensor(False)}, }, 1, ), ] host._poll_single_request("r1") output1 = host.get_omni_connector_output() self.assertEqual(output1.chunk_ready_req_ids, {"r1"}) host._poll_single_request("r1") output2 = host.get_omni_connector_output() self.assertEqual(output2.chunk_ready_req_ids, set()) self.assertEqual(output2.request_metadata, {"r1": {"next_stage_prompt_len": 7}}) host.shutdown_omni_connectors() def test_non_ar_recv_does_not_overwrite_unconsumed_staged_chunk(self): host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(stage_id=2, async_chunk=True, worker_type="gen"), ) host._omni_connector = MagicMock() host._stage_id = 2 host._async_chunk = True host._model_mode = "gen" host._request_ids_mapping["r1"] = "ext-r1" host._get_req_chunk["r1"] = 1 host._local_stage_payload_cache["r1"] = { "code_predictor_codes": [1, 2, 3], "left_context_size": 0, "finished": torch.tensor(False), } made_progress = host._poll_single_request("r1") self.assertFalse(made_progress) host._omni_connector.get.assert_not_called() self.assertEqual(host._get_req_chunk["r1"], 1) host.shutdown_omni_connectors() def test_non_ar_recv_waits_for_scheduler_handoff_before_fetching_next_chunk(self): host = MixinHost() host.init_omni_connectors( vllm_config=None, model_config=_make_model_config(stage_id=2, async_chunk=True, worker_type="gen"), ) host._omni_connector = MagicMock() host._stage_id = 2 host._async_chunk = True host._model_mode = "gen" host._request_ids_mapping["r1"] = "ext-r1" host._get_req_chunk["r1"] = 1 host._local_request_metadata["r1"] = { "code_predictor_codes": [10, 11, 12], "left_context_size": 0, } host._finished_load_reqs.add("r1") made_progress = host._poll_single_request("r1") self.assertFalse(made_progress) host._omni_connector.get.assert_not_called() self.assertEqual(host._get_req_chunk["r1"], 1) output = host.get_omni_connector_output() self.assertEqual(output.request_metadata["r1"]["code_predictor_codes"], [10, 11, 12]) self.assertEqual(output.chunk_ready_req_ids, {"r1"}) host._omni_connector.get.return_value = ( { "codes": {"audio": [20, 21, 22]}, "meta": {"left_context_size": 0, "finished": torch.tensor(False)}, }, 1, ) made_progress = host._poll_single_request("r1") self.assertTrue(made_progress) host._omni_connector.get.assert_called_once() self.assertEqual(host._get_req_chunk["r1"], 2) host.shutdown_omni_connectors() class TestRankAwareKVRouting(unittest.TestCase): def _make_host(self, *, from_tp: int, to_tp: int, local_rank: int) -> MixinHost: host = MixinHost() host.init_omni_connectors(vllm_config=None, model_config=_make_model_config(stage_id=1)) host._from_tp = from_tp host._to_tp = to_tp host._local_rank = local_rank return host def test_recv_keys_use_remote_rank_as_from_rank(self): host = self._make_host(from_tp=4, to_tp=2, local_rank=1) self.assertEqual( host.get_rank_aware_kv_keys("req", from_stage=0), ["req_0_0_2_1", "req_0_0_3_1"], ) host.shutdown_omni_connectors() def test_send_keys_route_from_rank_gt_to_rank(self): host = self._make_host(from_tp=4, to_tp=2, local_rank=3) self.assertEqual(host.get_rank_aware_kv_send_keys("req", from_stage=0), ["req_0_0_3_1"]) host.shutdown_omni_connectors() def test_invalid_recv_rank_mapping_raises(self): host = self._make_host(from_tp=3, to_tp=2, local_rank=1) with self.assertRaises(ValueError): host.get_rank_aware_kv_keys("req", from_stage=0) host.shutdown_omni_connectors() def test_invalid_send_rank_mapping_raises(self): host = self._make_host(from_tp=3, to_tp=2, local_rank=1) with self.assertRaises(ValueError): host.get_rank_aware_kv_send_keys("req", from_stage=0) host.shutdown_omni_connectors() def test_merge_rank_sharded_payloads_concatenates_head_dimension(self): host = self._make_host(from_tp=4, to_tp=2, local_rank=0) payloads = [ {"layer_blocks": {"key_cache": [torch.ones(2, 1, 3)], "value_cache": [torch.ones(2, 1, 3)]}}, {"layer_blocks": {"key_cache": [torch.full((2, 1, 3), 2.0)], "value_cache": [torch.full((2, 1, 3), 2.0)]}}, ] merged = host._merge_rank_sharded_kv_payloads(payloads) self.assertEqual(tuple(merged["layer_blocks"]["key_cache"][0].shape), (2, 2, 3)) self.assertTrue(torch.equal(merged["layer_blocks"]["key_cache"][0][:, 0], torch.ones(2, 3))) self.assertTrue(torch.equal(merged["layer_blocks"]["key_cache"][0][:, 1], torch.full((2, 3), 2.0))) host.shutdown_omni_connectors() def test_slice_rank_sharded_payload_splits_head_dimension(self): host = self._make_host(from_tp=2, to_tp=4, local_rank=1) payload = { "layer_blocks": { "key_cache": [torch.arange(24, dtype=torch.float32).reshape(2, 4, 3)], "value_cache": [torch.arange(24, dtype=torch.float32).reshape(2, 4, 3)], }, "metadata": {}, } sliced = host._slice_rank_sharded_kv_payload(payload) self.assertEqual(tuple(sliced["layer_blocks"]["key_cache"][0].shape), (2, 2, 3)) expected = torch.arange(24, dtype=torch.float32).reshape(2, 4, 3)[:, 2:4, :] self.assertTrue(torch.equal(sliced["layer_blocks"]["key_cache"][0], expected)) host.shutdown_omni_connectors() class TestAttachOmniConnectorOutput(unittest.TestCase): def test_wraps_empty_model_runner_output_when_signals_exist(self): from vllm.v1.worker.gpu_model_runner import EMPTY_MODEL_RUNNER_OUTPUT host = MixinHost() host.get_omni_connector_output = lambda: OmniConnectorOutput(chunk_ready_req_ids={"req-1"}) wrapped = host.attach_omni_connector_output(EMPTY_MODEL_RUNNER_OUTPUT) self.assertIsNot(wrapped, EMPTY_MODEL_RUNNER_OUTPUT) self.assertEqual(wrapped.omni_connector_output.chunk_ready_req_ids, {"req-1"}) class TestConnectorConfigValidation(unittest.TestCase): def test_invalid_connector_name_raises(self): host = MixinHost() model_config = _make_model_config(stage_id=1) model_config.stage_connector_config = {"name": " "} with self.assertRaisesRegex(RuntimeError, "missing connector name"): host.init_omni_connectors(vllm_config=None, model_config=model_config) class _FailingConnector: """Connector whose put() fails a configurable number of times.""" def __init__(self, fail_count: int = 1, raise_on_fail: bool = False): self._fail_count = fail_count self._raise_on_fail = raise_on_fail self.attempt = 0 def put(self, from_stage, to_stage, put_key, data): self.attempt += 1 if self.attempt <= self._fail_count: if self._raise_on_fail: raise ConnectionError("transient connector error") return False, 0, None return True, len(str(data)), None def get(self, *a, **kw): return None def close(self): pass class TestSendRetry(unittest.TestCase): """Tests for P1-2: failed connector sends must be retried.""" def _make_sender(self, connector): sender = MixinHost() sender.init_omni_connectors( vllm_config=None, model_config=_make_model_config(stage_id=0, async_chunk=True), ) sender._omni_connector = connector sender._stage_id = 0 sender._async_chunk = True return sender def _make_task(self, req_id="r1"): return { "stage_id": 0, "next_stage_id": 1, "request_id": req_id, "data": {"payload": "test"}, } def test_send_single_request_returns_false_on_put_failure(self): connector = _FailingConnector(fail_count=999) sender = self._make_sender(connector) result = sender._send_single_request(self._make_task()) self.assertFalse(result) sender.shutdown_omni_connectors() def test_send_single_request_does_not_decrement_on_failure(self): connector = _FailingConnector(fail_count=999) sender = self._make_sender(connector) sender._pending_save_counts["r1"] = 1 sender._send_single_request(self._make_task()) self.assertEqual(sender._pending_save_counts.get("r1"), 1, "pending count must NOT be decremented on failure") sender.shutdown_omni_connectors() def test_send_single_request_decrements_on_success(self): connector = MockConnector(stage_id=0) sender = self._make_sender(connector) sender._pending_save_counts["r1"] = 1 result = sender._send_single_request(self._make_task()) self.assertTrue(result) self.assertNotIn("r1", sender._pending_save_counts, "pending count should be zero/removed on success") sender.shutdown_omni_connectors() def test_requeue_or_drop_requeues_on_first_failure(self): sender = self._make_sender(MockConnector(stage_id=0)) task = self._make_task() sender._requeue_or_drop_failed_send(task) self.assertEqual(task.get("_retry_count"), 1) with sender._lock: dq = sender._pending_save_reqs.get("r1") self.assertIsNotNone(dq) self.assertEqual(len(dq), 1) sender.shutdown_omni_connectors() def test_requeue_or_drop_drops_after_max_retries(self): sender = self._make_sender(MockConnector(stage_id=0)) sender._pending_save_counts["r1"] = 1 task = self._make_task() task["_retry_count"] = sender._MAX_SEND_RETRIES # already at max sender._requeue_or_drop_failed_send(task) with sender._lock: dq = sender._pending_save_reqs.get("r1") self.assertTrue(dq is None or len(dq) == 0, "task should NOT be re-enqueued after max retries") self.assertNotIn("r1", sender._pending_save_counts, "pending count should be cleaned up on final drop") sender.shutdown_omni_connectors() def test_save_loop_retries_on_exception(self): """Integration: _save_loop retries a task when put() raises.""" from collections import deque connector = _FailingConnector(fail_count=1, raise_on_fail=True) sender = self._make_sender(connector) task = self._make_task() with sender._lock: sender._pending_save_reqs["r1"] = deque([task]) sender._pending_save_counts["r1"] = 1 sender._stop_event.clear() def run_one_loop(): sender._save_loop() sender._stop_event.set() # will exit after one iteration # Run manually instead of threading # Simulate: pop task, send fails, requeue popped_task = None with sender._lock: dq = sender._pending_save_reqs.get("r1") if dq: popped_task = dq.popleft() if not dq: del sender._pending_save_reqs["r1"] if popped_task is not None: success = False try: success = sender._send_single_request(popped_task) except Exception: pass if not success: sender._requeue_or_drop_failed_send(popped_task) # After first failure, task should be re-enqueued with sender._lock: dq = sender._pending_save_reqs.get("r1") self.assertIsNotNone(dq) self.assertEqual(len(dq), 1) requeued = dq[0] self.assertEqual(requeued.get("_retry_count"), 1) # Second attempt should succeed (connector now returns True) success = sender._send_single_request(requeued) self.assertTrue(success) sender.shutdown_omni_connectors() if __name__ == "__main__": unittest.main()