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

namespace REG_MARK_TEST
{
    [TestClass]
    public class UnitTest
    {
        [TestMethod]
        public void CheckMark_CorrectMark_True()
        {   
            string mark = "a001aa52";
            bool result = RegMark.CheckMark(mark);
            Assert.IsTrue(result);
        }
        [TestMethod]
        public void CheckMark_UNCorrectMark_False()
        {
            string mark = "a001aa";
            bool result = RegMark.CheckMark(mark);
            Assert.IsFalse(result);
        }

        [TestMethod]
        public void GetNextMarkAfter_NextMark_Equel()
        {
            string mark = "x999ax52";
            string expected = "x001bx52";
            string result = RegMark.GetNextMarkAfter(mark);
            Assert.AreEqual(expected, result);
        }

        [TestMethod]
        public void GetNextMarkAfter_NextMark_NotEquel()
        {
            string mark = "x998bx52";
            string expected = "x001bx52";
            string result = RegMark.GetNextMarkAfter(mark);
            Assert.AreNotEqual(expected, result);
        }
        [TestMethod]
        public void GetCombinationsCountInRange_1001Range_IsTrue()
        {
            int expected = 1001;
            int result = RegMark.GetCombinationsCountInRange("a001aa52","b001aa52");
            Assert.IsTrue(expected == result);
        }
        [TestMethod]
        public void GetCombinationsCountInRange_ZeroRange_IsTrue()
        {
            int expected = 1;
            int result = RegMark.GetCombinationsCountInRange("a001aa52", "a001aa52");
            Assert.IsTrue(expected == result);
        }
        [TestMethod]
        public void GetNextMarkAfterInRange_ZeroRange_IsTrue()
        {
            string expected = "out of stock";
            string result = RegMark.GetNextMarkAfterInRange("a555xx52", "a545xx52", "a550xx52");
            Assert.IsTrue(result == expected);
        }
        [TestMethod]
        public void GetNextMarkAfterInRange_NextPrevMark_IsTrue()
        {
            string expected = "a556xx52";
            string result = RegMark.GetNextMarkAfterInRange("a555xx52", "a545xx52", "a570xx52");
            Assert.IsTrue(result == expected);
        }
        [TestMethod]
        public void GetNextMarkAfterInRange_NextRangeMark_IsTrue()
        {
            string expected = "a545xx52";
            string result = RegMark.GetNextMarkAfterInRange("a530xx52", "a545xx52", "a570xx52");
            Assert.IsTrue(result == expected);
        }
        [TestMethod]
        public void GetNextMarkAfterInRange_TypeIsString()
        {
            Assert.IsInstanceOfType(RegMark.GetNextMarkAfterInRange("a530xa52", "a545xx52", "a570xx52"), typeof(string));
        }
        
        [TestMethod]
        public void GetNextMarkAfter_LastNextNumber()
        {
            Assert.ThrowsException<System.Exception>(() => RegMark.GetNextMarkAfter("x999xx72"));
        }
        [TestMethod]
        public void GetNextMarkAfterInRange_UNCorrectRange()
        {
            Assert.ThrowsException<System.Exception>(() => RegMark.GetNextMarkAfterInRange("a909aa72", "a999aa72", "a009aa72"));
        }
        [TestMethod]
        public void GetCombinationsCountInRange_UNCorrectRange()
        {
            Assert.ThrowsException<System.Exception>(() => RegMark.GetCombinationsCountInRange("a999aa72", "a909aa72"));
        }
        [TestMethod]
        public void GetCombinationsCountInRange_UNCorrectMark()
        {
            Assert.ThrowsException<System.Exception>(() => RegMark.GetCombinationsCountInRange("a909al72", "a909ka72"));
        }
        [TestMethod]
        public void GetNextMarkAfter_UNCorrectMark()
        {
            Assert.ThrowsException<System.Exception>(() => RegMark.GetNextMarkAfter("a909al72"));
        }
    }
}