refactor: streamline blockchain clients error names

bdk-swift/Tests/BitcoinDevKitTests/LiveElectrumClientTests.swift

@@ -0,0 +1,44 @@
+import XCTest
+@testable import BitcoinDevKit
+
+private let SIGNET_ELECTRUM_URL = "ssl://mempool.space:60602"
+
+final class LiveElectrumClientTests: XCTestCase {
+    func testSyncedBalance() throws {
+        let descriptor = try Descriptor(
+            descriptor: "wpkh(tprv8ZgxMBicQKsPf2qfrEygW6fdYseJDDrVnDv26PH5BHdvSuG6ecCbHqLVof9yZcMoM31z9ur3tTYbSnr1WBqbGX97CbXcmp5H6qeMpyvx35B/84h/1h/0h/0/*)",
+            network: Network.signet
+        )
+        let wallet = try Wallet.newNoPersist(
+            descriptor: descriptor,
+            changeDescriptor: nil,
+            network: .signet
+        )
+        let electrumClient: ElectrumClient = try ElectrumClient(url: SIGNET_ELECTRUM_URL)
+        let fullScanRequest: FullScanRequest = wallet.startFullScan()
+        let update = try electrumClient.fullScan(
+            fullScanRequest: fullScanRequest,
+            stopGap: 10,
+            batchSize: 10,
+            fetchPrevTxouts: false
+        )
+        try wallet.applyUpdate(update: update)
+        let _ = try wallet.commit()
+        let address = try wallet.revealNextAddress(keychain: KeychainKind.external).address.asString()
+
+        XCTAssertGreaterThan(
+            wallet.getBalance().total.toSat(),
+            UInt64(0),
+            "Wallet must have positive balance, please send funds to \(address)"
+        )
+
+        print("Transactions count: \(wallet.transactions().count)")
+        let transactions = wallet.transactions().prefix(3)
+        for tx in transactions {
+            let sentAndReceived = wallet.sentAndReceived(tx: tx.transaction)
+            print("Transaction: \(tx.transaction.txid())")
+            print("Sent \(sentAndReceived.sent)")
+            print("Received \(sentAndReceived.received)")
+        }
+    }
+}