[V1] Minor V1 async engine test refactor (#15075)

Signed-off-by: andoorve <murali.andoorveedu@mail.utoronto.ca>
Co-authored-by: andoorve <murali.andoorveedu@mail.utoronto.ca>

tests/v1/engine/test_async_llm.py

@@ -76,21 +76,18 @@ async def generate(engine: AsyncLLM,
 
 @pytest.mark.parametrize(
     "output_kind", [RequestOutputKind.DELTA, RequestOutputKind.FINAL_ONLY])
-@pytest.mark.parametrize("engine_args_and_prompt",
+@pytest.mark.parametrize("engine_args,prompt",
                          [(TEXT_ENGINE_ARGS, TEXT_PROMPT),
                           (VISION_ENGINE_ARGS, VISION_PROMPT)])
 @pytest.mark.asyncio
-async def test_load(
-    monkeypatch: pytest.MonkeyPatch,
-    output_kind: RequestOutputKind,
-    engine_args_and_prompt: tuple[AsyncEngineArgs, PromptType],
-):
+async def test_load(monkeypatch: pytest.MonkeyPatch,
+                    output_kind: RequestOutputKind,
+                    engine_args: AsyncEngineArgs, prompt: PromptType):
     # TODO(rickyx): Remove monkeypatch once we have a better way to test V1
     # so that in the future when we switch, we don't have to change all the
     # tests.
     with monkeypatch.context() as m, ExitStack() as after:
         m.setenv("VLLM_USE_V1", "1")
-        engine_args, prompt = engine_args_and_prompt
 
         engine = AsyncLLM.from_engine_args(engine_args)
         after.callback(engine.shutdown)
@@ -124,18 +121,16 @@ async def test_load(
 
 @pytest.mark.parametrize(
     "output_kind", [RequestOutputKind.DELTA, RequestOutputKind.FINAL_ONLY])
-@pytest.mark.parametrize("engine_args_and_prompt",
+@pytest.mark.parametrize("engine_args,prompt",
                          [(TEXT_ENGINE_ARGS, TEXT_PROMPT),
                           (VISION_ENGINE_ARGS, VISION_PROMPT)])
 @pytest.mark.asyncio
 async def test_abort(monkeypatch: pytest.MonkeyPatch,
                      output_kind: RequestOutputKind,
-                     engine_args_and_prompt: tuple[AsyncEngineArgs,
-                                                   PromptType]):
+                     engine_args: AsyncEngineArgs, prompt: PromptType):
 
     with monkeypatch.context() as m, ExitStack() as after:
         m.setenv("VLLM_USE_V1", "1")
-        engine_args, prompt = engine_args_and_prompt
 
         engine = AsyncLLM.from_engine_args(engine_args)
         after.callback(engine.shutdown)
@@ -193,17 +188,15 @@ async def test_abort(monkeypatch: pytest.MonkeyPatch,
 
 
 @pytest.mark.parametrize("n", [1, 3])
-@pytest.mark.parametrize("engine_args_and_prompt",
+@pytest.mark.parametrize("engine_args,prompt",
                          [(TEXT_ENGINE_ARGS, TEXT_PROMPT),
                           (VISION_ENGINE_ARGS, VISION_PROMPT)])
 @pytest.mark.asyncio
-async def test_finished_flag(monkeypatch, n: int,
-                             engine_args_and_prompt: tuple[AsyncEngineArgs,
-                                                           PromptType]):
+async def test_finished_flag(monkeypatch: pytest.MonkeyPatch, n: int,
+                             engine_args: AsyncEngineArgs, prompt: PromptType):
 
     with monkeypatch.context() as m, ExitStack() as after:
         m.setenv("VLLM_USE_V1", "1")
-        engine_args, prompt = engine_args_and_prompt
 
         engine = AsyncLLM.from_engine_args(engine_args)
         after.callback(engine.shutdown)