chore: HDNode.HDversion test for prefixes

Author: JeneaVranceanu

Tests/web3swiftTests/localTests/HDversionTest.swift

@@ -0,0 +1,18 @@
+//
+//  HDversionTest.swift
+//
+//  Created by JeneaVranceanu on 12.03.2023.
+//
+
+import Foundation
+import XCTest
+import Web3Core
+
+class HDversionTest: XCTestCase {
+
+    func testPrefixesNotNil() {
+        XCTAssertNotNil(HDNode.HDversion.publicPrefix)
+        XCTAssertNotNil(HDNode.HDversion.privatePrefix)
+    }
+
+}