fix: BIP39 use given language to generate mnemonics;

Author: JeneaVranceanu

Sources/Web3Core/KeystoreManager/BIP39.swift

@@ -6,7 +6,7 @@
 import Foundation
 import CryptoSwift
 
-public enum BIP39Language {
+public enum BIP39Language: CaseIterable {
     case english
     case chinese_simplified
     case chinese_traditional
@@ -124,7 +124,7 @@ public class BIP39 {
     public static func generateMnemonicsFromEntropy(entropy: Data, language: BIP39Language = .english) -> String? {
         guard entropy.count >= 16, entropy.count & 4 == 0 else { return nil }
         let separator = language.separator
-        let wordList = generateMnemonicsFrom(entropy: entropy)
+        let wordList = generateMnemonicsFrom(entropy: entropy, language: language)
         return wordList.joined(separator: separator)
     }
 

Tests/web3swiftTests/localTests/BIP39Tests.swift

@@ -11,6 +11,22 @@ import XCTest
 
 final class BIP39Tests: XCTestCase {
 
+    func testAllLanguageMnemonics() throws {
+        for language in BIP39Language.allCases {
+            guard let newMnemonics = try BIP39.generateMnemonics(bitsOfEntropy: 128, language: language) else {
+                XCTFail("Failed to generate BIP39 mnemonics phrase")
+                return
+            }
+            let wordsOfNewMnemonic = newMnemonics.split(separator: language.separator).map { String($0) }
+            for word in wordsOfNewMnemonic {
+                guard language.words.contains(word) else {
+                    XCTFail("Given word is not contained in the list of words of selected language available for mnemonics generation: \(word); \(language)")
+                    return
+                }
+            }
+        }
+    }
+
     func testBIP39() throws {
         var entropy = Data.fromHex("00000000000000000000000000000000")!
         var phrase = BIP39.generateMnemonicsFromEntropy(entropy: entropy)