C# 扩展string方法: GetMD5HashCode和GetSha1Code

Extension Methods:

using System.Linq;
using System.Security.Cryptography;
using System.Text;

namespace StringExtension
{
    public static class StringHashCode
    {
        public static string GetMD5HashCode(this string str)
        {
            using (var md5 = MD5.Create())
            {
                return string.Join("", md5.ComputeHash(Encoding.UTF8.GetBytes(str)).Select(x => x.ToString("x2")));
            }
        }

        public static string GetSha1Code(this string str)
        {
            using(var sha1 = SHA1.Create())
            {
                return string.Join("", sha1.ComputeHash(Encoding.UTF8.GetBytes(str)).Select(x => x.ToString("x2")));
            }
        }
    }
}

　　Test Code:

using Microsoft.VisualStudio.TestTools.UnitTesting;
using StringExtension;

namespace UnitTestStringExtension
{
    [TestClass]
    public class UnitTestStringMD5Hash
    {
        [TestMethod]
        public void TestGetMD5Hash()
        {
            var str = "paw123456";
            var str_MD5Hash = "dad1e4cf1e972cb49370c217a45875c0";

            Assert.AreEqual(str_MD5Hash, str.GetMD5HashCode());
        }

        [TestMethod]
        public void TesGetSha1Code()
        {
            var str = "paw123456";
            var str_Has1 = "e7c5f16f9a848ef11693572b1dd837dfed287d32";

            Assert.AreEqual(str_Has1, str.GetSha1Code());
        }
    }
}