def test_unbookmark_removes_timestamp(self):
g = NetworkGraph()
g.bookmark('content', 'fake_uuid')
g.unbookmark('content', 'fake_uuid')
with self.assertRaises(KeyError):
g.bookmarked_on('fake_uuid')
def test_bookmark_sets_timestamp(self):
g = NetworkGraph()
g.bookmark('content', 'fake_uuid')
self.assertTrue(isinstance(g.bookmarked_on('fake_uuid'), datetime))
