def test_find_artefact_invalid_payload(self):
        webhook = GreenHouseWebhook()
        payload = dict()

        self.assertIsNone(webhook.find_artefact(payload, artefact_type=GreenHouseWebhook.Artefact.Apk))
    def test_find_artefact_invalid_type(self):
        webhook = GreenHouseWebhook()
        payload = self.generate_payload_with_artefact()
        artefact = webhook.find_artefact(payload, artefact_type=GreenHouseWebhook.Artefact.Ipa)

        self.assertIsNone(artefact)