Merge pull request #139 from edx/mrehan/video-existence-api-util

Add video existence api util

edxval/api.py

@@ -195,6 +195,16 @@ def update_video_status(edx_video_id, status):
     video.save()
 
 
+def is_video_available(edx_video_id):
+    """
+    Returns whether a video exists given a video ID.
+
+    Arguments:
+     edx_video_id: A video ID representing a video record in db.
+    """
+    return Video.objects.filter(edx_video_id=edx_video_id).exists()
+
+
 def get_transcript_credentials_state_for_org(org, provider=None):
     """
     Returns transcript credentials state for an org

edxval/tests/test_api.py

@@ -261,10 +261,10 @@ class CreateProfileTest(TestCase):
         with self.assertRaises(ValCannotCreateError):
             api.create_profile(constants.PROFILE_DESKTOP)
 
-
+@ddt
 class GetVideoInfoTest(TestCase):
     """
-    Tests for our get_video_info function in api.py
+    Tests for our `get_video_info` and `is_video_available` methods in api.py
     """
 
     def setUp(self):
@@ -330,6 +330,17 @@ class GetVideoInfoTest(TestCase):
                 constants.VIDEO_DICT_FISH.get("edx_video_id")
             )
 
+    @data(
+        ('non-existent-edx-video-id', False),
+        ('super-soaker', True)
+    )
+    @unpack
+    def test_is_video_available(self, edx_video_id, expected_availability):
+        """
+        Tests to see if a video exists for an `edx_video_id`.
+        """
+        self.assertEqual(api.is_video_available(edx_video_id), expected_availability)
+
 
 class GetUrlsForProfileTest(TestCase):
     """