Make scripts under /test/srt as unit tests (#875)

.github/workflows/unit-test.yml

@@ -20,8 +20,6 @@ concurrency:
 jobs:
   unit-test:
     runs-on: self-hosted
-    env:
-      CUDA_VISIBLE_DEVICES: 6
 
     steps:
     - name: Checkout code
@@ -30,6 +28,7 @@ jobs:
     - name: Install dependencies
       run: |
         cd /data/zhyncs/venv && source ./bin/activate && cd -
+
         pip cache purge
         pip install --upgrade pip
         pip install -e "python[all]"
@@ -39,6 +38,14 @@ jobs:
     - name: Test OpenAI Backend
       run: |
         cd /data/zhyncs/venv && source ./bin/activate && cd -
-        cd test/lang
         export OPENAI_API_KEY=${{ secrets.OPENAI_API_KEY }}
+
+        cd test/lang
         python3 test_openai_backend.py
+
+    - name: Test SRT Backend
+      run: |
+        cd /data/zhyncs/venv && source ./bin/activate && cd -
+
+        cd test/lang
+        python3 test_srt_backend.py