First tests for imdb module

tests/scrobbles_tests/test_imdb.py

@@ -0,0 +1,12 @@
+import pytest
+import imdb
+from mock import patch
+
+from vrobbler.apps.scrobbles.imdb import lookup_video_from_imdb
+
+
+def test_lookup_imdb_bad_id(caplog):
+    data = lookup_video_from_imdb('3409324')
+    assert data is None
+    assert caplog.records[0].levelname == "WARNING"
+    assert caplog.records[0].msg == "IMDB ID should begin with 'tt' 3409324"