Add voxcpm model support. (#2467)

Signed-off-by: Celeste-jq <591998922@qq.com>
Signed-off-by: lyj-jjj <liuyingjun5@huawei.com>
Signed-off-by: IsleOfDawnlight <stellamou@qq.com>
Signed-off-by: Yueqian Lin <linyueqian@outlook.com>
Co-authored-by: Celeste-jq <591998922@qq.com>
Co-authored-by: lyj-jjj <liuyingjun5@huawei.com>
Co-authored-by: Yueqian Lin <linyueqian@outlook.com>

tests/engine/test_arg_utils.py

@@ -7,6 +7,7 @@ explicitly patch values that differ from vLLM.
 import argparse
 import inspect
 from types import SimpleNamespace
+from unittest.mock import Mock
 
 import pytest
 from pydantic import ValidationError
@@ -166,6 +167,24 @@ def test_stage_configs_path_field():
     assert args.stage_configs_path == "/some/path.yaml"
 
 
+def test_voxcpm_model_arch_injects_model_type_override(mocker):
+    """Ensure VoxCPM model_arch injects hf_overrides for config resolution."""
+    mocker.patch.object(OmniEngineArgs, "_ensure_omni_models_registered", return_value=True)
+    mocker.patch.object(OmniEngineArgs, "_patch_empty_hf_config")
+    mocker.patch.object(EngineArgs, "create_model_config", return_value=Mock())
+    mocker.patch.object(OmniModelConfig, "from_vllm_model_config", return_value=Mock())
+
+    args = OmniEngineArgs(
+        model="OpenBMB/VoxCPM1.5",
+        model_arch="VoxCPMForConditionalGeneration",
+    )
+    args.create_model_config()
+
+    assert args.hf_overrides["architectures"] == ["VoxCPMForConditionalGeneration"]
+    assert args.hf_overrides["model_type"] == "voxcpm"
+    args._patch_empty_hf_config.assert_called_once_with("voxcpm")
+
+
 def test_strip_single_engine_args():
     """_strip_single_engine_args should remove EngineArgs fields but keep omni fields."""
     kwargs = {