Add model accuracy test - step 1 (#866)

.github/workflows/unit-test.yml

@@ -35,6 +35,7 @@ jobs:
         pip install -e "python[all]"
         pip install flashinfer -i https://flashinfer.ai/whl/cu121/torch2.3/ --force-reinstall
         pip install --upgrade transformers
+        pip install accelerate
 
     - name: Test Frontend Language with SRT Backend
       run: |
@@ -50,6 +51,7 @@ jobs:
       run: |
         cd test/srt
         python3 test_eval_accuracy.py
+        python3 models/test_causal_models.py
 
     - name: Test Frontend Language with OpenAI Backend
       run: |