def METHOD_NAME(self):
    """Test that a new measurement is not created if the sources used for the measurement no longer exist."""
    report = create_report(report_uuid=REPORT_ID)
    del report["subjects"][SUBJECT_ID]["metrics"][METRIC_ID]["sources"][SOURCE_ID]
    self.database["reports"].insert_one(report)
    create_measurement(self.database, self.measurement_data)
    self.assertEqual(0, len(list(self.database.measurements.find())))