REG_MARK_LIB/UnitTestProject/UnitTest1.cs

using Microsoft.VisualStudio.TestTools.UnitTesting;
using System;
using REG_MARK_LIB;

namespace UnitTestProject
{
    [TestClass]
    public class UnitTest
    {
        [TestMethod]
        public void TestMethodCheckMarkIsTrue()
        {
            Assert.IsTrue(REG_MARK.CheckMark("a123aa456"), "true");
        }

        [TestMethod]
        public void TestMethodCheckMarkIsFalse()
        {
            Assert.IsFalse(REG_MARK.CheckMark("1234567"), "false");
        }

        [TestMethod]
        public void TestMethodCheckMarkIsInstanceOfType()
        {
            Assert.IsInstanceOfType(REG_MARK.CheckMark("1234567"), typeof(Boolean));
        }


        [TestMethod]
        public void TestMethodGetNextMarkAfterIsEquals()
        {
            Assert.AreEqual("a124aa456", REG_MARK.GetNextMarkAfter("a123aa456"));
        }

        [TestMethod]
        public void TestMethodGetNextMarkAfterIsInstanceOfType()
        {
            Assert.IsInstanceOfType(REG_MARK.GetNextMarkAfter("a123aa456"), typeof(String));
        }

        [TestMethod]
        public void TestMethodGetNextMarkAfterIsNotEquals()
        {
            Assert.AreNotEqual("112235687", REG_MARK.GetNextMarkAfter("a123aa456"));
        } 
        
        
        [TestMethod]
        public void TestMethodGetNextMarkAfterInRangeAreNotEqual()
        {
            Assert.AreNotEqual("112235687", REG_MARK.GetNextMarkAfterInRange("a123aa456", "a120aa456", "a130aa456"));
        }

        [TestMethod]
        public void TestMethodGetNextMarkAfterInRangeAreEqual()
        {
            Assert.AreEqual("a124aa456", REG_MARK.GetNextMarkAfterInRange("a123aa456", "a120aa456", "a130aa456"));
        }

        [TestMethod]
        public void TestMethodGetNextMarkAfterInRangeIsInstanceOfType()
        {
            Assert.IsInstanceOfType(REG_MARK.GetNextMarkAfterInRange("a123aa456", "a120aa456", "a130aa456"), typeof(String));
        }


        [TestMethod]
        public void TestMethodGetCombinationsCountInRangeIsInstanceOfType()
        {
            Assert.IsInstanceOfType(REG_MARK.GetCombinationsCountInRange("a123aa456",  "a130aa456"), typeof(int));
        }

        [TestMethod]
        public void TestMethodGetCombinationsCountInRangeAreEqual()
        {
            Assert.AreEqual(7, REG_MARK.GetCombinationsCountInRange("a123aa456", "a130aa456"));
        }


        [TestMethod]
        public void TestMethodGetNextMarkAfter1()
        {
            Assert.AreEqual("s", REG_MARK.GetNextMarkAfter("z999zz999"));
        }

        [TestMethod]
        public void TestMethodCheckMark2()
        {
            Assert.AreEqual(false, REG_MARK.CheckMark("1234567"));
        }
        [TestMethod]
        public void TestMethodGetNextMarkAfterInRange3()
        {
            Assert.AreEqual("s", REG_MARK.GetNextMarkAfterInRange("1234567", "1234567", "1234567"));
        }

        [TestMethod]
        public void TestMethodGetCombinationsCountInRange4()
        {
            Assert.AreEqual(0, REG_MARK.GetCombinationsCountInRange("z", "zds2"));
        }

        [TestMethod]
        public void TestMethodGetNextMarkAfterInRange5()
        {
            Assert.AreEqual("out of stock", REG_MARK.GetNextMarkAfterInRange("a123aa456", "a120aa456", "a110aa456"));
        }

    } 
}