[v1] add cli sampler (#9721)

tests_v1/sampler/test_cli_sampler.py

@@ -0,0 +1,41 @@
+# Copyright 2025 the LlamaFactory team.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import pytest
+
+from llamafactory.v1.config import ModelArguments, SampleArguments
+from llamafactory.v1.core.model_engine import ModelEngine
+from llamafactory.v1.samplers.cli_sampler import SyncSampler
+
+
+@pytest.mark.runs_on(["cuda", "npu"])
+def test_sync_sampler():
+    model_args = ModelArguments(model="Qwen/Qwen3-4B-Instruct-2507")
+    sample_args = SampleArguments()
+    model_engine = ModelEngine(model_args)
+    sampler = SyncSampler(sample_args, model_args, model_engine.model, model_engine.renderer)
+    messages = [{"role": "user", "content": [{"type": "text", "value": "Say 'This is a test.'"}]}]
+    response = ""
+    for new_text in sampler.generate(messages):
+        response += new_text
+
+    print(response)
+    assert model_engine.renderer.parse_message(response) == {
+        "role": "assistant",
+        "content": [{"type": "text", "value": "This is a test."}],
+    }
+
+
+if __name__ == "__main__":
+    test_sync_sampler()