Xunit 断言匿名类型

使用反射来判断

    public class MyTestClass
    {
        [Fact]
        public void GetAnonymous_Should_Return_Correctly()
        {
            var result = GetAnonymous();

            var id = (int)result.GetType().GetProperty("Id").GetValue(result);
            Assert.Equal(123, id);

            var text = (string)result.GetType().GetProperty("Text").GetValue(result);
            Assert.Equal("Abc123", text);
        }

        public object GetAnonymous()
        {
            var anonymous = new { Id = 123, Text = "Abc123", Test = true };
            return anonymous;
        }
    }

使用Dynamic关键字

我们需要先创建一个扩展方法如下

using System.Collections.Generic;
using System.ComponentModel;
using System.Dynamic;

namespace Malema.net
{
    public static class ObjectExtension
    {
        public static ExpandoObject ToExpandoObject(this object obj)
        {
            var expando = new ExpandoObject();

            foreach (PropertyDescriptor property in TypeDescriptor.GetProperties(obj.GetType()))
            {
                expando.TryAdd(property.Name, property.GetValue(obj));
            }

            return (ExpandoObject)expando;
        }
    }
}

接下来我们的单元测试就可以改成如下的形式了

    public class MyTestClass
    {
        [Fact]
        public void GetAnonymous_Should_Return_Correctly()
        {
            dynamic result = GetAnonymous().ToExpandoObject();

            Assert.Equal(123, result.Id);
           
            Assert.Equal("Abc123", result.Text);
        }

        public object GetAnonymous()
        {
            var anonymous = new { Id = 123, Text = "Abc123", Test = true };
            return anonymous;
        }
    }