diff --git a/test/test_info.py b/test/test_info.py
index bb8ffcccc..395382b34 100644
--- a/test/test_info.py
+++ b/test/test_info.py
@@ -107,6 +107,44 @@ class InfoTest(unittest.TestCase, TestHelper):
         self.assertNotIn(u'title:', out)
         self.assertIn(u'album: xxxx', out)
 
+    def test_length_human_library(self):
+        item, = self.add_item_fixtures()
+        item.album = 'loool'
+        item.length = 123.4
+        item.write()
+        item.store()
+
+        out = self.run_with_output('--library')
+        self.assertIn(u'length: 2:03', out)
+
+    def test_length_raw_library(self):
+        item, = self.add_item_fixtures()
+        item.album = 'loool'
+        item.length = 123.4
+        item.write()
+        item.store()
+
+        out = self.run_with_output('--library', '--raw-length')
+        self.assertIn(u'length: 123.4', out)
+
+    def test_length_human_path(self):
+        path = self.create_mediafile_fixture()
+        out = self.run_with_output(path)
+        self.assertIn(u'length: 0:01', out)
+        self.remove_mediafile_fixtures()
+
+    def test_length_raw_path(self):
+        path = self.create_mediafile_fixture()
+        out = self.run_with_output(path, '--raw-length')
+        self.assertIn(u'length: 1.071', out)
+        self.remove_mediafile_fixtures()
+
+    def test_custom_format(self):
+        self.add_item_fixtures()
+        out = self.run_with_output('--library', '--format',
+                                   '$track. $title - $artist ($length)')
+        self.assertEqual(u'02. tïtle 0 - the artist (0:01)\n', out)
+
 
 def suite():
     return unittest.TestLoader().loadTestsFromName(__name__)