add transcoder tests

azure-pipelines.yml

@@ -30,6 +30,7 @@ jobs:
       architecture: 'x64'
 
   - script: python -m pip install --upgrade pip
+      apt-get install -y ffmpeg
     displayName: 'Install dependencies'
 
   - script: |

tests/test_transcoder.py

@@ -0,0 +1,14 @@
+#! /usr/bin/env python
+from __future__ import print_function
+import datetime
+import os
+import sys
+import json
+import time
+import requests
+
+import core
+from core import logger, transcoder
+
+def test_transcoder_check():
+    assert transcoder.is_video_good(core.TEST_FILE, 0) == True