From fc507faee24036cb351a9e5b849d58dc77d68165 Mon Sep 17 00:00:00 2001
From: "nath@home" <nathdwek@ulb.ac.be>
Date: Tue, 21 Jul 2015 19:05:38 +0200
Subject: [PATCH] added comment to the test

---
 test/test_mediafile_edge.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/test/test_mediafile_edge.py b/test/test_mediafile_edge.py
index c871e0a9d..7a17fe86a 100644
--- a/test/test_mediafile_edge.py
+++ b/test/test_mediafile_edge.py
@@ -79,6 +79,10 @@ class EdgeTest(unittest.TestCase):
         self.assertEqual(f.bitrate, 0)
 
     def test_only_magic_bytes_jpeg(self):
+        # Some jpeg files can only be recognized by their magic bytes and as
+        # such aren't recognized by imghdr. Ensure that this still works thanks
+        # to our own follow up mimetype detection based on
+        # https://github.com/file/file/blob/master/magic/Magdir/jpeg#L12
         f = open(os.path.join(_common.RSRC, 'only-magic-bytes.jpg'), 'rb')
         jpg_data = f.read()
         self.assertEqual(