Umbraco-CMS/tests/Umbraco.Tests.UnitTests/Umbraco.Core/Cache/DeepCloneAppCacheTests.cs

// Copyright (c) Umbraco.
// See LICENSE for more details.

using System;
using System.Diagnostics;
using System.Linq;
using NUnit.Framework;
using Umbraco.Cms.Core.Cache;
using Umbraco.Cms.Core.Collections;
using Umbraco.Cms.Core.Models;
using Umbraco.Cms.Core.Models.Entities;
using Umbraco.Cms.Tests.Common;
using Umbraco.Extensions;

namespace Umbraco.Cms.Tests.UnitTests.Umbraco.Core.Cache
{
    [TestFixture]
    public class DeepCloneAppCacheTests : RuntimeAppCacheTests
    {
        private DeepCloneAppCache _provider;
        private ObjectCacheAppCache _memberCache;

        protected override int GetTotalItemCount => _memberCache.MemoryCache.Count();

        public override void Setup()
        {
            base.Setup();
            _memberCache = new ObjectCacheAppCache();

            _provider = new DeepCloneAppCache(_memberCache);
        }

        internal override IAppCache AppCache => _provider;

        internal override IAppPolicyCache AppPolicyCache => _provider;

        [Test]
        public void Clones_List()
        {
            var original = new DeepCloneableList<TestClone>(ListCloneBehavior.Always)
            {
                new TestClone(),
                new TestClone(),
                new TestClone()
            };

            DeepCloneableList<TestClone> val = _provider.GetCacheItem("test", () => original);

            Assert.AreEqual(original.Count, val.Count);
            foreach (TestClone item in val)
            {
                Assert.IsTrue(item.IsClone);
            }
        }

        [Test]
        public void Ensures_Cloned_And_Reset()
        {
            var original = new TestClass()
            {
                Name = "hello"
            };
            Assert.IsTrue(original.IsDirty());

            var val = _provider.GetCacheItem("test", () => original);

            Assert.AreNotEqual(original.CloneId, val.CloneId);
            Assert.IsFalse(val.IsDirty());
        }

        [Test]
        public void DoesNotCacheExceptions()
        {
            string value;
            Assert.Throws<Exception>(() => { value = (string)_provider.Get("key", () => GetValue(1)); });
            Assert.Throws<Exception>(() => { value = (string)_provider.Get("key", () => GetValue(2)); });

            // does not throw
            value = (string)_provider.Get("key", () => GetValue(3));
            Assert.AreEqual("succ3", value);

            // cache
            value = (string)_provider.Get("key", () => GetValue(4));
            Assert.AreEqual("succ3", value);
        }

        private static string GetValue(int i)
        {
            Debug.Print("get" + i);
            if (i < 3)
            {
                throw new Exception("fail");
            }

            return "succ" + i;
        }

        private class TestClass : BeingDirtyBase, IDeepCloneable
        {
            public TestClass() => CloneId = Guid.NewGuid();

            private string _name;

            public string Name
            {
                get => _name;

                set => SetPropertyValueAndDetectChanges(value, ref _name, nameof(Name));
            }

            public Guid CloneId { get; set; }

            public object DeepClone()
            {
                var shallowClone = (TestClass)MemberwiseClone();
                DeepCloneHelper.DeepCloneRefProperties(this, shallowClone);
                shallowClone.CloneId = Guid.NewGuid();
                return shallowClone;
            }
        }
    }
}