[V1] [CI] Enable v1/entrypoints

.buildkite/test-pipeline.yaml

@@ -207,6 +207,7 @@ steps:
     - VLLM_USE_V1=1 pytest -v -s v1/structured_output
     - VLLM_USE_V1=1 pytest -v -s v1/test_stats.py
     - VLLM_USE_V1=1 pytest -v -s v1/test_utils.py
+    - VLLM_WORKER_MULTIPROC_METHOD=spawn VLLM_USE_V1 pytest -v -x tests/v1/entrypoints
     # TODO: accuracy does not match, whether setting
     # VLLM_USE_FLASHINFER_SAMPLER or not on H100.
     - VLLM_USE_V1=1 pytest -v -s v1/e2e

tests/v1/entrypoints/llm/test_struct_output_generate.py

@@ -220,7 +220,7 @@ def test_guided_regex(monkeypatch, sample_regex, guided_decoding_backend: str):
                                          regex=sample_regex,
                                          backend=guided_decoding_backend))
     with pytest.raises(ValueError,
-                       match="Regex guided decoding is not supported."):
+                       match="Regex structured output is not supported."):
         llm.generate(prompts=[
             f"Give an example IPv4 address with this regex: {sample_regex}"
         ] * 2,