Merkle Patricia Tries (2x)

MPTStates.UnitTests/MPTStates.UnitTests.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <AssemblyName>MPTStates.UnitTests</AssemblyName>
+    <RootNamespace>MPTStates.UnitTests</RootNamespace>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+  </PropertyGroup>
+  <ItemGroup>
+    <PackageReference Include="coverlet.msbuild" Version="2.3.2">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="FluentAssertions" Version="4.19.4" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.3.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="1.2.0" />
+    <PackageReference Include="MSTest.TestFramework" Version="1.2.0" />
+    <PackageReference Include="Moq" Version="4.7.63" />
+    <PackageReference Include="Akka.TestKit" Version="1.3.10" />
+    <PackageReference Include="Akka.TestKit.Xunit2" Version="1.3.10" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\MPTStates\MPTStates.csproj" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82a7f48d-3b50-4b1e-b82e-3ada8210c358}" />
+  </ItemGroup>
+</Project>

MPTStates.UnitTests/TestDataCache.cs

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+using Neo.IO;
+using Neo.IO.Caching;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Neo.UnitTests
+{
+    public class TestDataCache<TKey, TValue> : DataCache<TKey, TValue>
+        where TKey : IEquatable<TKey>, ISerializable
+        where TValue : class, ICloneable<TValue>, ISerializable, new()
+    {
+        private readonly TValue _defaultValue;
+
+        public TestDataCache()
+        {
+            _defaultValue = null;
+        }
+
+        public TestDataCache(TValue defaultValue)
+        {
+            this._defaultValue = defaultValue;
+        }
+        public override void DeleteInternal(TKey key)
+        {
+        }
+
+        protected override void AddInternal(TKey key, TValue value)
+        {
+        }
+
+        protected override IEnumerable<KeyValuePair<TKey, TValue>> FindInternal(byte[] key_prefix)
+        {
+            return Enumerable.Empty<KeyValuePair<TKey, TValue>>();
+        }
+
+        protected override TValue GetInternal(TKey key)
+        {
+            if (_defaultValue == null) throw new NotImplementedException();
+            return _defaultValue;
+        }
+
+        protected override TValue TryGetInternal(TKey key)
+        {
+            return _defaultValue;
+        }
+
+        protected override void UpdateInternal(TKey key, TValue value)
+        {
+        }
+    }
+}

MPTStates.UnitTests/TestDataCacheWithInternal.cs

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+using Neo.IO;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Neo.UnitTests
+{
+    public class TestDataCacheWithInternal<TKey, TValue> : TestDataCache<TKey, TValue>
+        where TKey : IEquatable<TKey>, ISerializable
+        where TValue : class, ICloneable<TValue>, ISerializable, new()
+    {
+        private readonly Dictionary<TKey, TValue> _internal = new Dictionary<TKey, TValue>();
+
+        public override void DeleteInternal(TKey key) => _internal.Remove(key);
+
+        protected override void AddInternal(TKey key, TValue value) => _internal.Add(key, value);
+
+        protected override IEnumerable<KeyValuePair<TKey, TValue>> FindInternal(byte[] key_prefix)
+        {
+            return Enumerable.Empty<KeyValuePair<TKey, TValue>>();
+        }
+
+        protected override TValue GetInternal(TKey key) => _internal[key];
+
+        protected override TValue TryGetInternal(TKey key)
+        {
+            _internal.TryGetValue(key, out var value);
+            return value;
+        }
+
+        protected override void UpdateInternal(TKey key, TValue value) => _internal[key] = value;
+    }
+}