add string spit test

Package.swift

@@ -6,20 +6,22 @@ import PackageDescription
 let package = Package(
     name: "Web3swift",
     platforms: [
-        .macOS(.v10_15), .iOS(.v13)
+        .macOS(.v12), .iOS(.v13)
     ],
     products: [
         .library(name: "web3swift", targets: ["web3swift"])
     ],
     dependencies: [
         .package(url: "https://github.com/attaswift/BigInt.git", from: "5.3.0"),
-        .package(url: "https://github.com/krzyzanowskim/CryptoSwift.git", from: "1.5.1")
+        .package(url: "https://github.com/krzyzanowskim/CryptoSwift.git", from: "1.5.1"),
+//        .package(url: "https://github.com/realm/SwiftLint", branch: "main")
     ],
     targets: [
         .target(name: "secp256k1"),
         .target(
             name: "Web3Core",
-            dependencies: ["BigInt", "secp256k1", "CryptoSwift"]
+            dependencies: ["BigInt", "secp256k1", "CryptoSwift"]//,
+//            plugins: [.plugin(name: "SwiftLintPlugin", package: "SwiftLint")]
         ),
         .target(
             name: "web3swift",
@@ -28,7 +30,8 @@ let package = Package(
                 .copy("./Browser/browser.js"),
                 .copy("./Browser/browser.min.js"),
                 .copy("./Browser/wk.bridge.min.js")
-            ]
+            ]//,
+//            plugins: [.plugin(name: "SwiftLintPlugin", package: "SwiftLint")]
         ),
         .testTarget(
             name: "localTests",

Sources/Web3Core/EthereumNetwork/Request/APIRequest+Methods.swift

@@ -39,6 +39,7 @@ extension APIRequest {
                 throw Web3Error.nodeError(desc: "\(error.message)\nError code: \(error.code)")
             }
             let description = "\(parsedErrorCode.errorName). Error code: \(error.code). \(error.message)"
+            print(description)
             switch parsedErrorCode {
             case .parseError, .invalidParams:
                 throw Web3Error.inputError(desc: description)

Sources/Web3Core/EthereumNetwork/Utility/Async+BackwardCapability.swift

@@ -8,7 +8,6 @@
 import Foundation
 
 @available(iOS, obsoleted: 15.0, message: "Use the built-in API instead")
-@available(macOS, obsoleted: 12.0, message: "Use the built-in API instead")
 extension URLSession {
     func data(for request: URLRequest) async throws -> (Data, HTTPURLResponse) {
         try await withCheckedThrowingContinuation { continuation in

Sources/web3swift/Utils/ENS/ENSRegistry.swift

@@ -65,6 +65,16 @@ public extension ENS {
             return Resolver(web3: self.web3, resolverContractAddress: resolverAddress)
         }
 
+        let hexCharacters: [Character] = Array("0123456789abcdef")
+
+        func hexlify(_ value: Data) -> String {
+            var result = "0x"
+            for byte in value {
+                result += "\(hexCharacters[Int(byte / 16)])\(hexCharacters[Int(byte % 16)])"
+            }
+            return result
+        }
+
         public func getTTL(node: String) async throws -> BigUInt {
             guard let nameHash = NameHash.nameHash(node) else {throw Web3Error.processingError(desc: "Failed to get name hash")}
 

Tests/web3swiftTests/localTests/UncategorizedTests.swift

@@ -51,6 +51,17 @@ class UncategorizedTests: XCTestCase {
         XCTAssert(biguint == BigUInt("126978086000000000"))
     }
 
+    func testStringSplit() {
+        XCTAssertEqual("abcdefgh".split(every: 3), ["abc", "def", "gh"])
+        XCTAssertEqual("abcdefgh".split(every: 3, backwards: true), ["ab", "cde", "fgh"])
+
+        XCTAssertEqual("abcdefgh".split(every: 10), ["abcdefgh"])
+        XCTAssertEqual("".split(every: 3), [])
+
+        XCTAssertEqual("abcdefgh".split(every: 1), ["a", "b", "c", "d", "e", "f", "g", "h"])
+        XCTAssertEqual("abcdefgh".split(every: 1, backwards: true), ["a", "b", "c", "d", "e", "f", "g", "h"])  // should be the same as from the front
+    }
+
     func testBloom() throws {
         let positive = [
                 "testtest",