Wait for LSP channel readiness

The dummy trusted wallet could return before the LSP saw its channel as
usable. Wait for the LSP side as well so tests do not race routing
setup.

Author: benthecarman

orange-sdk/src/trusted_wallet/dummy.rs

@@ -284,6 +284,40 @@ impl DummyTrustedWallet {
 			panic!("No usable channels found {channels:?}");
 		}
 
+		for _ in 0..iterations {
+			let lsp_clone = Arc::clone(&lsp);
+			let ldk_node_id = ldk_node.node_id();
+			let is_usable = blocking_with_timeout(
+				"dummy LSP channel list",
+				Duration::from_secs(5),
+				move || {
+					lsp_clone
+						.list_channels()
+						.iter()
+						.any(|c| c.counterparty_node_id == ldk_node_id && c.is_usable)
+				},
+			)
+			.await;
+			if is_usable {
+				break;
+			}
+			tokio::time::sleep(Duration::from_secs(1)).await;
+		}
+
+		let lsp_clone = Arc::clone(&lsp);
+		let ldk_node_id = ldk_node.node_id();
+		let lsp_channels = blocking_with_timeout(
+			"dummy final LSP channel list",
+			Duration::from_secs(5),
+			move || lsp_clone.list_channels(),
+		)
+		.await;
+		if !lsp_channels.iter().any(|c| c.counterparty_node_id == ldk_node_id && c.is_usable) {
+			panic!(
+				"No usable LSP-side channel found for dummy node {ldk_node_id}: {lsp_channels:?}"
+			);
+		}
+
 		DummyTrustedWallet { current_bal_msats, payments, ldk_node, payment_success_flag }
 	}