f - another quantity_max parsing test case

Author: jkczyz

lightning/src/offers/offer.rs

@@ -957,6 +957,19 @@ mod tests {
 		if let Err(e) = offer.to_string().parse::<Offer>() {
 			panic!("error parsing offer: {:?}", e);
 		}
+
+		let mut tlv_stream = offer.as_tlv_stream();
+		tlv_stream.quantity_max = Some(1);
+
+		let mut encoded_offer = Vec::new();
+		tlv_stream.write(&mut encoded_offer).unwrap();
+
+		match Offer::try_from(encoded_offer) {
+			Ok(_) => panic!("expected error"),
+			Err(e) => {
+				assert_eq!(e, ParseError::InvalidSemantics(SemanticError::InvalidQuantity));
+			},
+		}
 	}
 
 	#[test]