def METHOD_NAME(self):
    video = Video.objects.get(id=1)
    enrichment = Enrichment()
    enrichment.video = video
    enrichment.type = "image"
    enrichment.title = "test"
    enrichment.start = 1
    enrichment.end = 3
    self.assertRaises(ValidationError, enrichment.clean)
    print(" ---> test_overlap: OK! --- EnrichmentModel")