add skip logic for ublad test

backend/corpora/ublad/tests/test_ublad.py

@@ -1,13 +1,14 @@
 import locale
+import pytest
 from corpora.ublad.ublad import transform_date
 import datetime
-import subprocess
 
 
 def test_transform_date():
-    # Install the Dutch language package for locale
-    subprocess.run(['sudo', 'apt-get', 'install', 'language-pack-nl'])
     datestring = '6 september 2007'
     goal_date = datetime.date(2007, 9, 6)
-    date = transform_date(datestring)
+    try:
+        date = transform_date(datestring)
+    except locale.Error:
+        pytest.skip('Dutch Locale not installed in environment')
     assert date == str(goal_date)