using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace Falcon.SugarApi.Test
{

    /// <summary>
    /// 字符串扩展方法测试
    /// </summary>
    [TestClass]
    public class StringExtendTest
    {
        [TestMethod]
        public void TestSplit() {
            var str = $"a,b.c;d，e。f；g";
            var strArr = str.SplitStr();
            Assert.AreEqual(7, strArr.Length, "分割后长度应该为7");
            str = "a,,,    ,b    ,c    c,";
            strArr = str.SplitStr();
            Assert.AreEqual(3, strArr.Length, "分割后长度应该为3");
            Assert.AreEqual("a", strArr[0]);
            Assert.AreEqual("b", strArr[1]);
            Assert.AreEqual("c    c", strArr[2]);
            str = null;
            strArr = str.SplitStr();
            Assert.IsNotNull(strArr);
            Assert.AreEqual(0, strArr.Length);

            //指定分隔符
            str = $"a,b.c;d，e。f；g";

            strArr = str.SplitStr(',');
            Assert.AreEqual(2, strArr.Length, "分割后长度应该为7");
            Assert.AreEqual("a", strArr[0]);
            Assert.AreEqual("b.c;d，e。f；g", strArr[1]);

            strArr = str.SplitStr(',', '.');
            Assert.AreEqual(3, strArr.Length, "分割后长度应该为7");
            Assert.AreEqual("a", strArr[0]);
            Assert.AreEqual("b", strArr[1]);
            Assert.AreEqual("c;d，e。f；g", strArr[2]);
        }

        /// <summary>
        /// 测试ToDefault
        /// </summary>
        [TestMethod]
        public void TestToDefault() {
            var str = "";
            var r = "";
            r = str.ToDefault("abc");
            Assert.AreEqual("abc", r);
            str = null;
            r = str.ToDefault("abc");
            Assert.AreEqual("abc", r);
            str = "123";
            r = str.ToDefault("abc");
            Assert.AreEqual("123", r);
        }
    }
}