X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Futil%2Ftest_channel_signer.rs;fp=lightning%2Fsrc%2Futil%2Ftest_channel_signer.rs;h=ab576fee90de6c9920ad1e6836b3e9b207bec92b;hb=014a336e592bfc8cb49929b799b9d6d9286dab16;hp=942671cf46b5a328b76295d9c400ad6bb6e342ab;hpb=4278afc9aa73c1ce4f2422b6ada6e470e6e2213e;p=rust-lightning

diff --git a/lightning/src/util/test_channel_signer.rs b/lightning/src/util/test_channel_signer.rs
index 942671cf..ab576fee 100644
--- a/lightning/src/util/test_channel_signer.rs
+++ b/lightning/src/util/test_channel_signer.rs
@@ -56,6 +56,9 @@ pub struct TestChannelSigner {
 	/// Channel state used for policy enforcement
 	pub state: Arc<Mutex<EnforcementState>>,
 	pub disable_revocation_policy_check: bool,
+	/// When `true` (the default), the signer will respond immediately with signatures. When `false`,
+	/// the signer will return an error indicating that it is unavailable.
+	pub available: Arc<Mutex<bool>>,
 }
 
 impl PartialEq for TestChannelSigner {
@@ -71,7 +74,8 @@ impl TestChannelSigner {
 		Self {
 			inner,
 			state,
-			disable_revocation_policy_check: false
+			disable_revocation_policy_check: false,
+			available: Arc::new(Mutex::new(true)),
 		}
 	}
 
@@ -84,7 +88,8 @@ impl TestChannelSigner {
 		Self {
 			inner,
 			state,
-			disable_revocation_policy_check
+			disable_revocation_policy_check,
+			available: Arc::new(Mutex::new(true)),
 		}
 	}
 
@@ -94,6 +99,16 @@ impl TestChannelSigner {
 	pub fn get_enforcement_state(&self) -> MutexGuard<EnforcementState> {
 		self.state.lock().unwrap()
 	}
+
+	/// Marks the signer's availability.
+	///
+	/// When `true`, methods are forwarded to the underlying signer as normal. When `false`, some
+	/// methods will return `Err` indicating that the signer is unavailable. Intended to be used for
+	/// testing asynchronous signing.
+	#[cfg(test)]
+	pub fn set_available(&self, available: bool) {
+		*self.available.lock().unwrap() = available;
+	}
 }
 
 impl ChannelSigner for TestChannelSigner {
@@ -133,6 +148,9 @@ impl EcdsaChannelSigner for TestChannelSigner {
 		self.verify_counterparty_commitment_tx(commitment_tx, secp_ctx);
 
 		{
+			if !*self.available.lock().unwrap() {
+				return Err(());
+			}
 			let mut state = self.state.lock().unwrap();
 			let actual_commitment_number = commitment_tx.commitment_number();
 			let last_commitment_number = state.last_counterparty_commitment;
@@ -149,6 +167,9 @@ impl EcdsaChannelSigner for TestChannelSigner {
 	}
 
 	fn validate_counterparty_revocation(&self, idx: u64, _secret: &SecretKey) -> Result<(), ()> {
+		if !*self.available.lock().unwrap() {
+			return Err(());
+		}
 		let mut state = self.state.lock().unwrap();
 		assert!(idx == state.last_counterparty_revoked_commitment || idx == state.last_counterparty_revoked_commitment - 1, "expecting to validate the current or next counterparty revocation - trying {}, current {}", idx, state.last_counterparty_revoked_commitment);
 		state.last_counterparty_revoked_commitment = idx;
@@ -156,6 +177,9 @@ impl EcdsaChannelSigner for TestChannelSigner {
 	}
 
 	fn sign_holder_commitment(&self, commitment_tx: &HolderCommitmentTransaction, secp_ctx: &Secp256k1<secp256k1::All>) -> Result<Signature, ()> {
+		if !*self.available.lock().unwrap() {
+			return Err(());
+		}
 		let trusted_tx = self.verify_holder_commitment_tx(commitment_tx, secp_ctx);
 		let state = self.state.lock().unwrap();
 		let commitment_number = trusted_tx.commitment_number();