def test_tag_input_type(self):
        """Test that tags input is of type list, set or tuple."""

        self.obs1.tag("tag")
        self.obs1.tag(["tag2"])
        self.assertIn("tag", {tag.name for tag in self.obs1.tags})
        self.assertIn("tag2", {tag.name for tag in self.obs1.tags})
Test that tags input is of type list, set or tuple.
tests/schemas/tag.py