Expand unit tests to cover complex struct array parameters.

Author: arik-so

ci/LDKSwift/Tests/LDKSwiftTests/LDKSwiftTest.swift

@@ -70,6 +70,10 @@ class LDKSwiftTest: XCTestCase {
         let channel_manager = channel_manager_constructor.channelManager;
         let cmPersister = TestChannelManagerPersister(channelManager: channel_manager)
 
+        let txdata = [C2Tuple_usizeTransactionZ.new(a: 2, b: Self.hexStringToBytes(hexString: "020000000001010000000000000000000000000000000000000000000000000000000000000000ffffffff03530101ffffffff0200f2052a0100000017a9149e6d815a46cd349527961f58cc20d41d15fcb99e870000000000000000266a24aa21a9ede2f61c3f71d1defd3fa999dfa36953755c690689799962b48bebd836974e8cf90120000000000000000000000000000000000000000000000000000000000000000000000000")!)]
+        let header = Self.hexStringToBytes(hexString: "f5591ea0b69ae3edc0de11497ffb0fdd91f769ede96c5d662c805364e9bf8b2243e8e5b9d1833eff7cb19abd9fc9da3cd26fe84d718bbf8a336966ae4f7dea6a81372961ffff7f200400000001020000")
+        channel_manager.as_Confirm().transactions_confirmed(header: header, txdata: txdata, height: 525)
+
         channel_manager_constructor.chain_sync_completed(persister: cmPersister)
         channel_manager_constructor.interrupt()
     }
@@ -133,4 +137,28 @@ class LDKSwiftTest: XCTestCase {
         Bindings.setLogThreshold(severity: .DEBUG)
     }
 
+    private class func hexStringToBytes(hexString: String) -> [UInt8]? {
+        let hexStr = hexString.dropFirst(hexString.hasPrefix("0x") ? 2 : 0)
+
+        guard hexStr.count % 2 == 0 else { return nil }
+
+        var newData = [UInt8]()
+
+        var indexIsEven = true
+        for i in hexStr.indices {
+            if indexIsEven {
+                let byteRange = i...hexStr.index(after: i)
+                guard let byte = UInt8(hexStr[byteRange], radix: 16) else { return nil }
+                newData.append(byte)
+            }
+            indexIsEven.toggle()
+        }
+        return newData
+    }
+
+    private class func bytesToHexString(bytes: [UInt8]) -> String {
+        let format = "%02hhx" // "%02hhX" (uppercase)
+        return bytes.map { String(format: format, $0) }.joined()
+    }
+
 }