/*
 * Copyright (c) 2023 Proton AG
 *
 * This file is part of ProtonVPN.
 *
 * ProtonVPN is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * ProtonVPN is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with ProtonVPN.  If not, see <https://www.gnu.org/licenses/>.
 */

using Microsoft.VisualStudio.TestTools.UnitTesting;
using ProtonVPN.Crypto.Contracts;

namespace ProtonVPN.Crypto.Tests;

[TestClass]
public class X25519KeyGeneratorTest
{
    private const string Ed25519Asn1Base64SecretKey = "MC4CAQAwBQYDK2VwBCIEIJ1oDfMF/1sQ21ug3MtsR4gS/fSKrQjpltGaKPOzLrJW"; 
    private const string X25519Base64SecretKey = "uDiY1T9gYZO90r2fC63At9T2CnV1X8/NfWaQ/v/gT2g="; 

    private IX25519KeyGenerator _generator;

    [TestInitialize]  
    public void Initialize()  
    {  
        _generator = new X25519KeyGenerator();
    }

    [TestCleanup]  
    public void Cleanup()  
    {  
        _generator = null;
    }

    [TestMethod]
    public void TestFromEd25519SecretKey()
    {
        SecretKey ed25519Asn1SecretKey = new SecretKey(Ed25519Asn1Base64SecretKey, KeyAlgorithm.Ed25519);

        SecretKey x25519SecretKey = _generator.FromEd25519SecretKey(ed25519Asn1SecretKey);
            
        Assert.AreEqual(KeyAlgorithm.X25519, x25519SecretKey.Algorithm);
        Assert.HasCount(32, x25519SecretKey.Bytes);
        Assert.AreEqual(X25519Base64SecretKey, x25519SecretKey.Base64);
    }
}