+
+impl core::fmt::Display for Refund {
+ fn fmt(&self, f: &mut core::fmt::Formatter) -> Result<(), core::fmt::Error> {
+ self.fmt_bech32_str(f)
+ }
+}
+
+#[cfg(test)]
+mod tests {
+ use super::{Refund, RefundBuilder, RefundTlvStreamRef};
+
+ use bitcoin::blockdata::constants::ChainHash;
+ use bitcoin::network::constants::Network;
+ use bitcoin::secp256k1::{KeyPair, Secp256k1, SecretKey};
+ use core::convert::TryFrom;
+ use core::time::Duration;
+ use crate::blinded_path::{BlindedHop, BlindedPath};
+ use crate::sign::KeyMaterial;
+ use crate::ln::features::{InvoiceRequestFeatures, OfferFeatures};
+ use crate::ln::inbound_payment::ExpandedKey;
+ use crate::ln::msgs::{DecodeError, MAX_VALUE_MSAT};
+ use crate::offers::invoice_request::InvoiceRequestTlvStreamRef;
+ use crate::offers::offer::OfferTlvStreamRef;
+ use crate::offers::parse::{ParseError, SemanticError};
+ use crate::offers::payer::PayerTlvStreamRef;
+ use crate::offers::test_utils::*;
+ use crate::util::ser::{BigSize, Writeable};
+ use crate::util::string::PrintableString;
+
+ trait ToBytes {
+ fn to_bytes(&self) -> Vec<u8>;
+ }
+
+ impl<'a> ToBytes for RefundTlvStreamRef<'a> {
+ fn to_bytes(&self) -> Vec<u8> {
+ let mut buffer = Vec::new();
+ self.write(&mut buffer).unwrap();
+ buffer
+ }
+ }
+
+ #[test]
+ fn builds_refund_with_defaults() {
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .build().unwrap();
+
+ let mut buffer = Vec::new();
+ refund.write(&mut buffer).unwrap();
+
+ assert_eq!(refund.bytes, buffer.as_slice());
+ assert_eq!(refund.metadata(), &[1; 32]);
+ assert_eq!(refund.description(), PrintableString("foo"));
+ assert_eq!(refund.absolute_expiry(), None);
+ #[cfg(feature = "std")]
+ assert!(!refund.is_expired());
+ assert_eq!(refund.paths(), &[]);
+ assert_eq!(refund.issuer(), None);
+ assert_eq!(refund.chain(), ChainHash::using_genesis_block(Network::Bitcoin));
+ assert_eq!(refund.amount_msats(), 1000);
+ assert_eq!(refund.features(), &InvoiceRequestFeatures::empty());
+ assert_eq!(refund.payer_id(), payer_pubkey());
+ assert_eq!(refund.payer_note(), None);
+
+ assert_eq!(
+ refund.as_tlv_stream(),
+ (
+ PayerTlvStreamRef { metadata: Some(&vec![1; 32]) },
+ OfferTlvStreamRef {
+ chains: None,
+ metadata: None,
+ currency: None,
+ amount: None,
+ description: Some(&String::from("foo")),
+ features: None,
+ absolute_expiry: None,
+ paths: None,
+ issuer: None,
+ quantity_max: None,
+ node_id: None,
+ },
+ InvoiceRequestTlvStreamRef {
+ chain: None,
+ amount: Some(1000),
+ features: None,
+ quantity: None,
+ payer_id: Some(&payer_pubkey()),
+ payer_note: None,
+ },
+ ),
+ );
+
+ if let Err(e) = Refund::try_from(buffer) {
+ panic!("error parsing refund: {:?}", e);
+ }
+ }
+
+ #[test]
+ fn fails_building_refund_with_invalid_amount() {
+ match RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), MAX_VALUE_MSAT + 1) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, SemanticError::InvalidAmount),
+ }
+ }
+
+ #[test]
+ fn builds_refund_with_metadata_derived() {
+ let desc = "foo".to_string();
+ let node_id = payer_pubkey();
+ let expanded_key = ExpandedKey::new(&KeyMaterial([42; 32]));
+ let entropy = FixedEntropy {};
+ let secp_ctx = Secp256k1::new();
+
+ let refund = RefundBuilder
+ ::deriving_payer_id(desc, node_id, &expanded_key, &entropy, &secp_ctx, 1000)
+ .unwrap()
+ .build().unwrap();
+ assert_eq!(refund.payer_id(), node_id);
+
+ // Fails verification with altered fields
+ let invoice = refund
+ .respond_with_no_std(payment_paths(), payment_hash(), recipient_pubkey(), now())
+ .unwrap()
+ .build().unwrap()
+ .sign(recipient_sign).unwrap();
+ assert!(invoice.verify(&expanded_key, &secp_ctx));
+
+ let mut tlv_stream = refund.as_tlv_stream();
+ tlv_stream.2.amount = Some(2000);
+
+ let mut encoded_refund = Vec::new();
+ tlv_stream.write(&mut encoded_refund).unwrap();
+
+ let invoice = Refund::try_from(encoded_refund).unwrap()
+ .respond_with_no_std(payment_paths(), payment_hash(), recipient_pubkey(), now())
+ .unwrap()
+ .build().unwrap()
+ .sign(recipient_sign).unwrap();
+ assert!(!invoice.verify(&expanded_key, &secp_ctx));
+
+ // Fails verification with altered metadata
+ let mut tlv_stream = refund.as_tlv_stream();
+ let metadata = tlv_stream.0.metadata.unwrap().iter().copied().rev().collect();
+ tlv_stream.0.metadata = Some(&metadata);
+
+ let mut encoded_refund = Vec::new();
+ tlv_stream.write(&mut encoded_refund).unwrap();
+
+ let invoice = Refund::try_from(encoded_refund).unwrap()
+ .respond_with_no_std(payment_paths(), payment_hash(), recipient_pubkey(), now())
+ .unwrap()
+ .build().unwrap()
+ .sign(recipient_sign).unwrap();
+ assert!(!invoice.verify(&expanded_key, &secp_ctx));
+ }
+
+ #[test]
+ fn builds_refund_with_derived_payer_id() {
+ let desc = "foo".to_string();
+ let node_id = payer_pubkey();
+ let expanded_key = ExpandedKey::new(&KeyMaterial([42; 32]));
+ let entropy = FixedEntropy {};
+ let secp_ctx = Secp256k1::new();
+
+ let blinded_path = BlindedPath {
+ introduction_node_id: pubkey(40),
+ blinding_point: pubkey(41),
+ blinded_hops: vec![
+ BlindedHop { blinded_node_id: pubkey(43), encrypted_payload: vec![0; 43] },
+ BlindedHop { blinded_node_id: node_id, encrypted_payload: vec![0; 44] },
+ ],
+ };
+
+ let refund = RefundBuilder
+ ::deriving_payer_id(desc, node_id, &expanded_key, &entropy, &secp_ctx, 1000)
+ .unwrap()
+ .path(blinded_path)
+ .build().unwrap();
+ assert_ne!(refund.payer_id(), node_id);
+
+ let invoice = refund
+ .respond_with_no_std(payment_paths(), payment_hash(), recipient_pubkey(), now())
+ .unwrap()
+ .build().unwrap()
+ .sign(recipient_sign).unwrap();
+ assert!(invoice.verify(&expanded_key, &secp_ctx));
+
+ // Fails verification with altered fields
+ let mut tlv_stream = refund.as_tlv_stream();
+ tlv_stream.2.amount = Some(2000);
+
+ let mut encoded_refund = Vec::new();
+ tlv_stream.write(&mut encoded_refund).unwrap();
+
+ let invoice = Refund::try_from(encoded_refund).unwrap()
+ .respond_with_no_std(payment_paths(), payment_hash(), recipient_pubkey(), now())
+ .unwrap()
+ .build().unwrap()
+ .sign(recipient_sign).unwrap();
+ assert!(!invoice.verify(&expanded_key, &secp_ctx));
+
+ // Fails verification with altered payer_id
+ let mut tlv_stream = refund.as_tlv_stream();
+ let payer_id = pubkey(1);
+ tlv_stream.2.payer_id = Some(&payer_id);
+
+ let mut encoded_refund = Vec::new();
+ tlv_stream.write(&mut encoded_refund).unwrap();
+
+ let invoice = Refund::try_from(encoded_refund).unwrap()
+ .respond_with_no_std(payment_paths(), payment_hash(), recipient_pubkey(), now())
+ .unwrap()
+ .build().unwrap()
+ .sign(recipient_sign).unwrap();
+ assert!(!invoice.verify(&expanded_key, &secp_ctx));
+ }
+
+ #[test]
+ fn builds_refund_with_absolute_expiry() {
+ let future_expiry = Duration::from_secs(u64::max_value());
+ let past_expiry = Duration::from_secs(0);
+
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .absolute_expiry(future_expiry)
+ .build()
+ .unwrap();
+ let (_, tlv_stream, _) = refund.as_tlv_stream();
+ #[cfg(feature = "std")]
+ assert!(!refund.is_expired());
+ assert_eq!(refund.absolute_expiry(), Some(future_expiry));
+ assert_eq!(tlv_stream.absolute_expiry, Some(future_expiry.as_secs()));
+
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .absolute_expiry(future_expiry)
+ .absolute_expiry(past_expiry)
+ .build()
+ .unwrap();
+ let (_, tlv_stream, _) = refund.as_tlv_stream();
+ #[cfg(feature = "std")]
+ assert!(refund.is_expired());
+ assert_eq!(refund.absolute_expiry(), Some(past_expiry));
+ assert_eq!(tlv_stream.absolute_expiry, Some(past_expiry.as_secs()));
+ }
+
+ #[test]
+ fn builds_refund_with_paths() {
+ let paths = vec![
+ BlindedPath {
+ introduction_node_id: pubkey(40),
+ blinding_point: pubkey(41),
+ blinded_hops: vec![
+ BlindedHop { blinded_node_id: pubkey(43), encrypted_payload: vec![0; 43] },
+ BlindedHop { blinded_node_id: pubkey(44), encrypted_payload: vec![0; 44] },
+ ],
+ },
+ BlindedPath {
+ introduction_node_id: pubkey(40),
+ blinding_point: pubkey(41),
+ blinded_hops: vec![
+ BlindedHop { blinded_node_id: pubkey(45), encrypted_payload: vec![0; 45] },
+ BlindedHop { blinded_node_id: pubkey(46), encrypted_payload: vec![0; 46] },
+ ],
+ },
+ ];
+
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .path(paths[0].clone())
+ .path(paths[1].clone())
+ .build()
+ .unwrap();
+ let (_, offer_tlv_stream, invoice_request_tlv_stream) = refund.as_tlv_stream();
+ assert_eq!(refund.paths(), paths.as_slice());
+ assert_eq!(refund.payer_id(), pubkey(42));
+ assert_ne!(pubkey(42), pubkey(44));
+ assert_eq!(offer_tlv_stream.paths, Some(&paths));
+ assert_eq!(invoice_request_tlv_stream.payer_id, Some(&pubkey(42)));
+ }
+
+ #[test]
+ fn builds_refund_with_issuer() {
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .issuer("bar".into())
+ .build()
+ .unwrap();
+ let (_, tlv_stream, _) = refund.as_tlv_stream();
+ assert_eq!(refund.issuer(), Some(PrintableString("bar")));
+ assert_eq!(tlv_stream.issuer, Some(&String::from("bar")));
+
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .issuer("bar".into())
+ .issuer("baz".into())
+ .build()
+ .unwrap();
+ let (_, tlv_stream, _) = refund.as_tlv_stream();
+ assert_eq!(refund.issuer(), Some(PrintableString("baz")));
+ assert_eq!(tlv_stream.issuer, Some(&String::from("baz")));
+ }
+
+ #[test]
+ fn builds_refund_with_chain() {
+ let mainnet = ChainHash::using_genesis_block(Network::Bitcoin);
+ let testnet = ChainHash::using_genesis_block(Network::Testnet);
+
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .chain(Network::Bitcoin)
+ .build().unwrap();
+ let (_, _, tlv_stream) = refund.as_tlv_stream();
+ assert_eq!(refund.chain(), mainnet);
+ assert_eq!(tlv_stream.chain, None);
+
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .chain(Network::Testnet)
+ .build().unwrap();
+ let (_, _, tlv_stream) = refund.as_tlv_stream();
+ assert_eq!(refund.chain(), testnet);
+ assert_eq!(tlv_stream.chain, Some(&testnet));
+
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .chain(Network::Regtest)
+ .chain(Network::Testnet)
+ .build().unwrap();
+ let (_, _, tlv_stream) = refund.as_tlv_stream();
+ assert_eq!(refund.chain(), testnet);
+ assert_eq!(tlv_stream.chain, Some(&testnet));
+ }
+
+ #[test]
+ fn builds_refund_with_quantity() {
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .quantity(10)
+ .build().unwrap();
+ let (_, _, tlv_stream) = refund.as_tlv_stream();
+ assert_eq!(refund.quantity(), Some(10));
+ assert_eq!(tlv_stream.quantity, Some(10));
+
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .quantity(10)
+ .quantity(1)
+ .build().unwrap();
+ let (_, _, tlv_stream) = refund.as_tlv_stream();
+ assert_eq!(refund.quantity(), Some(1));
+ assert_eq!(tlv_stream.quantity, Some(1));
+ }
+
+ #[test]
+ fn builds_refund_with_payer_note() {
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .payer_note("bar".into())
+ .build().unwrap();
+ let (_, _, tlv_stream) = refund.as_tlv_stream();
+ assert_eq!(refund.payer_note(), Some(PrintableString("bar")));
+ assert_eq!(tlv_stream.payer_note, Some(&String::from("bar")));
+
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .payer_note("bar".into())
+ .payer_note("baz".into())
+ .build().unwrap();
+ let (_, _, tlv_stream) = refund.as_tlv_stream();
+ assert_eq!(refund.payer_note(), Some(PrintableString("baz")));
+ assert_eq!(tlv_stream.payer_note, Some(&String::from("baz")));
+ }
+
+ #[test]
+ fn fails_responding_with_unknown_required_features() {
+ match RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .features_unchecked(InvoiceRequestFeatures::unknown())
+ .build().unwrap()
+ .respond_with_no_std(payment_paths(), payment_hash(), recipient_pubkey(), now())
+ {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, SemanticError::UnknownRequiredFeatures),
+ }
+ }
+
+ #[test]
+ fn parses_refund_with_metadata() {
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .build().unwrap();
+ if let Err(e) = refund.to_string().parse::<Refund>() {
+ panic!("error parsing refund: {:?}", e);
+ }
+
+ let mut tlv_stream = refund.as_tlv_stream();
+ tlv_stream.0.metadata = None;
+
+ match Refund::try_from(tlv_stream.to_bytes()) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => {
+ assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingPayerMetadata));
+ },
+ }
+ }
+
+ #[test]
+ fn parses_refund_with_description() {
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .build().unwrap();
+ if let Err(e) = refund.to_string().parse::<Refund>() {
+ panic!("error parsing refund: {:?}", e);
+ }
+
+ let mut tlv_stream = refund.as_tlv_stream();
+ tlv_stream.1.description = None;
+
+ match Refund::try_from(tlv_stream.to_bytes()) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => {
+ assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingDescription));
+ },
+ }
+ }
+
+ #[test]
+ fn parses_refund_with_amount() {
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .build().unwrap();
+ if let Err(e) = refund.to_string().parse::<Refund>() {
+ panic!("error parsing refund: {:?}", e);
+ }
+
+ let mut tlv_stream = refund.as_tlv_stream();
+ tlv_stream.2.amount = None;
+
+ match Refund::try_from(tlv_stream.to_bytes()) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => {
+ assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingAmount));
+ },
+ }
+
+ let mut tlv_stream = refund.as_tlv_stream();
+ tlv_stream.2.amount = Some(MAX_VALUE_MSAT + 1);
+
+ match Refund::try_from(tlv_stream.to_bytes()) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => {
+ assert_eq!(e, ParseError::InvalidSemantics(SemanticError::InvalidAmount));
+ },
+ }
+ }
+
+ #[test]
+ fn parses_refund_with_payer_id() {
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .build().unwrap();
+ if let Err(e) = refund.to_string().parse::<Refund>() {
+ panic!("error parsing refund: {:?}", e);
+ }
+
+ let mut tlv_stream = refund.as_tlv_stream();
+ tlv_stream.2.payer_id = None;
+
+ match Refund::try_from(tlv_stream.to_bytes()) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => {
+ assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingPayerId));
+ },
+ }
+ }
+
+ #[test]
+ fn parses_refund_with_optional_fields() {
+ let past_expiry = Duration::from_secs(0);
+ let paths = vec![
+ BlindedPath {
+ introduction_node_id: pubkey(40),
+ blinding_point: pubkey(41),
+ blinded_hops: vec![
+ BlindedHop { blinded_node_id: pubkey(43), encrypted_payload: vec![0; 43] },
+ BlindedHop { blinded_node_id: pubkey(44), encrypted_payload: vec![0; 44] },
+ ],
+ },
+ BlindedPath {
+ introduction_node_id: pubkey(40),
+ blinding_point: pubkey(41),
+ blinded_hops: vec![
+ BlindedHop { blinded_node_id: pubkey(45), encrypted_payload: vec![0; 45] },
+ BlindedHop { blinded_node_id: pubkey(46), encrypted_payload: vec![0; 46] },
+ ],
+ },
+ ];
+
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .absolute_expiry(past_expiry)
+ .issuer("bar".into())
+ .path(paths[0].clone())
+ .path(paths[1].clone())
+ .chain(Network::Testnet)
+ .features_unchecked(InvoiceRequestFeatures::unknown())
+ .quantity(10)
+ .payer_note("baz".into())
+ .build()
+ .unwrap();
+ match refund.to_string().parse::<Refund>() {
+ Ok(refund) => {
+ assert_eq!(refund.absolute_expiry(), Some(past_expiry));
+ #[cfg(feature = "std")]
+ assert!(refund.is_expired());
+ assert_eq!(refund.paths(), &paths[..]);
+ assert_eq!(refund.issuer(), Some(PrintableString("bar")));
+ assert_eq!(refund.chain(), ChainHash::using_genesis_block(Network::Testnet));
+ assert_eq!(refund.features(), &InvoiceRequestFeatures::unknown());
+ assert_eq!(refund.quantity(), Some(10));
+ assert_eq!(refund.payer_note(), Some(PrintableString("baz")));
+ },
+ Err(e) => panic!("error parsing refund: {:?}", e),
+ }
+ }
+
+ #[test]
+ fn fails_parsing_refund_with_unexpected_fields() {
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], payer_pubkey(), 1000).unwrap()
+ .build().unwrap();
+ if let Err(e) = refund.to_string().parse::<Refund>() {
+ panic!("error parsing refund: {:?}", e);
+ }
+
+ let metadata = vec![42; 32];
+ let mut tlv_stream = refund.as_tlv_stream();
+ tlv_stream.1.metadata = Some(&metadata);
+
+ match Refund::try_from(tlv_stream.to_bytes()) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => {
+ assert_eq!(e, ParseError::InvalidSemantics(SemanticError::UnexpectedMetadata));
+ },
+ }
+
+ let chains = vec![ChainHash::using_genesis_block(Network::Testnet)];
+ let mut tlv_stream = refund.as_tlv_stream();
+ tlv_stream.1.chains = Some(&chains);
+
+ match Refund::try_from(tlv_stream.to_bytes()) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => {
+ assert_eq!(e, ParseError::InvalidSemantics(SemanticError::UnexpectedChain));
+ },
+ }
+
+ let mut tlv_stream = refund.as_tlv_stream();
+ tlv_stream.1.currency = Some(&b"USD");
+ tlv_stream.1.amount = Some(1000);
+
+ match Refund::try_from(tlv_stream.to_bytes()) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => {
+ assert_eq!(e, ParseError::InvalidSemantics(SemanticError::UnexpectedAmount));
+ },
+ }
+
+ let features = OfferFeatures::unknown();
+ let mut tlv_stream = refund.as_tlv_stream();
+ tlv_stream.1.features = Some(&features);
+
+ match Refund::try_from(tlv_stream.to_bytes()) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => {
+ assert_eq!(e, ParseError::InvalidSemantics(SemanticError::UnexpectedFeatures));
+ },
+ }
+
+ let mut tlv_stream = refund.as_tlv_stream();
+ tlv_stream.1.quantity_max = Some(10);
+
+ match Refund::try_from(tlv_stream.to_bytes()) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => {
+ assert_eq!(e, ParseError::InvalidSemantics(SemanticError::UnexpectedQuantity));
+ },
+ }
+
+ let node_id = payer_pubkey();
+ let mut tlv_stream = refund.as_tlv_stream();
+ tlv_stream.1.node_id = Some(&node_id);
+
+ match Refund::try_from(tlv_stream.to_bytes()) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => {
+ assert_eq!(e, ParseError::InvalidSemantics(SemanticError::UnexpectedSigningPubkey));
+ },
+ }
+ }
+
+ #[test]
+ fn fails_parsing_refund_with_extra_tlv_records() {
+ let secp_ctx = Secp256k1::new();
+ let keys = KeyPair::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
+ let refund = RefundBuilder::new("foo".into(), vec![1; 32], keys.public_key(), 1000).unwrap()
+ .build().unwrap();
+
+ let mut encoded_refund = Vec::new();
+ refund.write(&mut encoded_refund).unwrap();
+ BigSize(1002).write(&mut encoded_refund).unwrap();
+ BigSize(32).write(&mut encoded_refund).unwrap();
+ [42u8; 32].write(&mut encoded_refund).unwrap();
+
+ match Refund::try_from(encoded_refund) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, ParseError::Decode(DecodeError::InvalidValue)),
+ }
+ }
+}