Newbe.ObjectVisitor 样例 1

using System.Collections.Generic;using System.ComponentModel;using System.Linq;using System.Text;using FluentAssertions;using NUnit.Framework;
namespace Newbe.ObjectVisitor.Tests{    public class DataConnectionModelTest    {        public const string ConnectionStringValue =            "Host=www.newbe.pro;Port=36524;Username=newbe36524;Password=newbe.pro;";
        [Test]        public void JoinToString()        {            var model = new DataConnectionModel            {                Host = "www.newbe.pro",                Port = 36524,                Username = "newbe36524",                Password = "newbe.pro",            };            var connectionString = model.ToString();
            connectionString.Should().Be(ConnectionStringValue);        }
        [Test]        public void BuildFromString()        {            var model = DataConnectionModel.FromString(ConnectionStringValue);            var expected = new DataConnectionModel            {                Host = "www.newbe.pro",                Port = 36524,                Username = "newbe36524",                Password = "newbe.pro",            };            model.Should().BeEquivalentTo(expected);        }

        public class DataConnectionModel        {            public string Host { get; set; } = null!;            public ushort? Port { get; set; } = null!;            public string Username { get; set; } = null!;            public string Password { get; set; } = null!;            public int? MaxPoolSize { get; set; } = null!;
            private static readonly ICachedObjectVisitor<DataConnectionModel, StringBuilder> ConnectionStringBuilder =                default(DataConnectionModel)!                    .V()                    .WithExtendObject<DataConnectionModel, StringBuilder>()                    .ForEach((name, value, sb) => AppendValueIfNotNull(name, value, sb))                    .Cache();
            private static void AppendValueIfNotNull(string name, object? value, StringBuilder sb)            {                if (value != null)                {                    sb.Append($"{name}={value};");                }            }
            public override string ToString()            {                var sb = new StringBuilder();                ConnectionStringBuilder.Run(this, sb);                return sb.ToString();            }
            private static readonly ICachedObjectVisitor<DataConnectionModel, Dictionary<string, string>>                ConnectionStringConstructor                    =                    default(DataConnectionModel)!                        .V()                        .WithExtendObject<DataConnectionModel, Dictionary<string, string>>()                        .ForEach(context => SetValueIfFound(context))                        .Cache();
            private static void SetValueIfFound(                IObjectVisitorContext<DataConnectionModel, Dictionary<string, string>, object> c)            {                if (c.ExtendObject.TryGetValue(c.Name, out var stringValue))                {                    TypeConverter conv = TypeDescriptor.GetConverter(c.PropertyInfo.PropertyType);                    c.Value = conv.ConvertFrom(stringValue)!;                }            }
            public static DataConnectionModel FromString(string connectionString)            {                var dic = connectionString.Split(';')                    .Where(x => !string.IsNullOrEmpty(x))                    .Select(x => x.Split('='))                    .ToDictionary(x => x[0], x => x[1]);                var re = new DataConnectionModel();                ConnectionStringConstructor.Run(re, dic);                return re;            }        }    }}

using System.Text.RegularExpressions;using FluentAssertions;using NUnit.Framework;
namespace Newbe.ObjectVisitor.Tests{    public class ChangePasswordTest    {        [Test]        public void CoverSensitiveDataTest()        {            // here is a model            var userModel = new UserModel            {                Username = "newbe36524",                Password = "newbe.pro",                Phone = "12345678901"            };
            // create a data visitor to cover sensitive data            var visitor = userModel.V()                .ForEach<UserModel, string>(x => CoverSensitiveData(x))                .Cache();
            visitor.Run(userModel);
            var expected = new UserModel            {                Username = "newbe36524",                Password = "***",                Phone = "123****8901",            };            userModel.Should().BeEquivalentTo(expected);        }
        private void CoverSensitiveData(IObjectVisitorContext<UserModel, string> c)        {            var value = c.Value;            if (!string.IsNullOrEmpty(value))            {                c.Value = Regex.Replace(value, "(\\d{3})\\d{4}(\\d{4})", "$1****$2");            }
            if (c.Name == nameof(UserModel.Password))            {                c.Value = "***";            }        }
        public class UserModel        {            public string Username { get; set; } = null!;            public string Phone { get; set; } = null!;            public string Password { get; set; } = null!;        }    }}

using System.Collections.Generic;using System.Linq;using FluentAssertions;using NUnit.Framework;
namespace Newbe.ObjectVisitor.Tests{    public class EnumerableTest    {        [Test]        public void NameAndValue()        {            var model = new TestModel            {                List1 = new[] {1},                List2 = new[] {2},                List3 = new List<int> {3},                List4 = new HashSet<int> {4}            };            var sumBag = new SumBag();            var visitor = model.V()                .WithExtendObject(sumBag)                .ForEach<TestModel, SumBag, IEnumerable<int>>((name, value, bag) => Sum(bag, value),                    x => x.IsOrImplOf<IEnumerable<int>>())                .Cache();            visitor.Run(model, sumBag);            sumBag.Sum.Should().Be(10);        }
        private static void Sum(SumBag bag, IEnumerable<int> data)        {            bag.Sum += data.Sum();        }
        public class SumBag        {            public int Sum { get; set; }        }
        public class TestModel        {            public int[] List1 { get; set; } = null!;            public IEnumerable<int> List2 { get; set; } = null!;            public List<int> List3 { get; set; } = null!;            public HashSet<int> List4 { get; set; } = null!;        }    }}