f - copies_verified_invoice_request_fields test

Author: jkczyz

lightning/src/offers/invoice_request.rs

@@ -1180,7 +1180,7 @@ impl Readable for InvoiceRequestFields {
 
 #[cfg(test)]
 mod tests {
-	use super::{InvoiceRequest, InvoiceRequestTlvStreamRef, SIGNATURE_TAG, UnsignedInvoiceRequest};
+	use super::{InvoiceRequest, InvoiceRequestFields, InvoiceRequestTlvStreamRef, SIGNATURE_TAG, UnsignedInvoiceRequest};
 
 	use bitcoin::blockdata::constants::ChainHash;
 	use bitcoin::network::constants::Network;
@@ -1208,7 +1208,7 @@ mod tests {
 	use crate::offers::payer::PayerTlvStreamRef;
 	use crate::offers::test_utils::*;
 	use crate::util::ser::{BigSize, Writeable};
-	use crate::util::string::PrintableString;
+	use crate::util::string::{PrintableString, UntrustedString};
 
 	#[test]
 	fn builds_invoice_request_with_defaults() {
@@ -2244,4 +2244,48 @@ mod tests {
 			Err(e) => assert_eq!(e, Bolt12ParseError::Decode(DecodeError::InvalidValue)),
 		}
 	}
+
+	#[test]
+	fn copies_verified_invoice_request_fields() {
+		let desc = "foo".to_string();
+		let node_id = recipient_pubkey();
+		let expanded_key = ExpandedKey::new(&KeyMaterial([42; 32]));
+		let entropy = FixedEntropy {};
+		let secp_ctx = Secp256k1::new();
+
+		#[cfg(c_bindings)]
+		use super::OfferWithDerivedMetadataBuilder as OfferBuilder;
+		let offer = OfferBuilder
+			::deriving_signing_pubkey(desc, node_id, &expanded_key, &entropy, &secp_ctx)
+			.chain(Network::Testnet)
+			.amount_msats(1000)
+			.supported_quantity(Quantity::Unbounded)
+			.build().unwrap();
+		assert_eq!(offer.signing_pubkey(), node_id);
+
+		let invoice_request = offer.request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+			.chain(Network::Testnet).unwrap()
+			.amount_msats(1001).unwrap()
+			.quantity(1).unwrap()
+			.payer_note("0".repeat(1024))
+			.build().unwrap()
+			.sign(payer_sign).unwrap();
+		match invoice_request.verify(&expanded_key, &secp_ctx) {
+			Ok(invoice_request) => {
+				assert_eq!(invoice_request.offer_id, offer.id());
+				assert_eq!(
+					invoice_request.fields(),
+					InvoiceRequestFields {
+						payer_id: payer_pubkey(),
+						chain: Some(ChainHash::using_genesis_block(Network::Testnet)),
+						amount_msats: Some(1001),
+						features: InvoiceRequestFeatures::empty(),
+						quantity: Some(1),
+						payer_note: Some(UntrustedString("0".repeat(512))),
+					}
+				);
+			},
+			Err(_) => panic!("unexpected error"),
+		}
+	}
 }