// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using System;
using System.Threading;
using Microsoft.AspNetCore.DataProtection.KeyManagement.Internal;
using Moq;
using Xunit;

namespace Microsoft.AspNetCore.DataProtection.KeyManagement
{
    public class CacheableKeyRingTests
    {
        [Fact]
        public void IsValid_NullKeyRing_ReturnsFalse()
        {
            Assert.False(CacheableKeyRing.IsValid(null, DateTime.UtcNow));
        }

        [Fact]
        public void IsValid_CancellationTokenTriggered_ReturnsFalse()
        {
            // Arrange
            var keyRing = new Mock<IKeyRing>().Object;
            DateTimeOffset now = DateTimeOffset.UtcNow;
            var cts = new CancellationTokenSource();
            var cacheableKeyRing = new CacheableKeyRing(cts.Token, now.AddHours(1), keyRing);

            // Act & assert
            Assert.True(CacheableKeyRing.IsValid(cacheableKeyRing, now.UtcDateTime));
            cts.Cancel();
            Assert.False(CacheableKeyRing.IsValid(cacheableKeyRing, now.UtcDateTime));
        }

        [Fact]
        public void IsValid_Expired_ReturnsFalse()
        {
            // Arrange
            var keyRing = new Mock<IKeyRing>().Object;
            DateTimeOffset now = DateTimeOffset.UtcNow;
            var cts = new CancellationTokenSource();
            var cacheableKeyRing = new CacheableKeyRing(cts.Token, now.AddHours(1), keyRing);

            // Act & assert
            Assert.True(CacheableKeyRing.IsValid(cacheableKeyRing, now.UtcDateTime));
            Assert.False(CacheableKeyRing.IsValid(cacheableKeyRing, now.AddHours(1).UtcDateTime));
        }


        [Fact]
        public void KeyRing_Prop()
        {
            // Arrange
            var keyRing = new Mock<IKeyRing>().Object;
            var cacheableKeyRing = new CacheableKeyRing(CancellationToken.None, DateTimeOffset.Now, keyRing);

            // Act & assert
            Assert.Same(keyRing, cacheableKeyRing.KeyRing);
        }
    }
}