def test_remove_tag(self):
session = Client().session()
tag = Tag(name='booya')
image = Image(filename='bab1e5')
session.add(tag)
session.add(image)
session.flush()
image_tag = ImageTag(image_id=image.image_id, tag_id=tag.tag_id)
session.add(image_tag)
session.flush()
image.remove_tag('booya')
image_tags = session.query(ImageTag).all()
eq_(image_tags, [])
