using DllforTesting;

namespace UnitTestForDLL
{
    public class UnitTest1
    {
        #region Низкой сложности
        [Fact]
        public void CheckMarkOnTrue()
        {
            Assert.True(Class1.CheckMark("A123CA777"));
        }
        [Fact]
        public void CheckMarkOnFalse()
        {
            Assert.False(Class1.CheckMark("A123CA808"));
        }
        [Fact]
        public void CheckMarkOnNull()
        {
            Assert.NotNull(Class1.CheckMark("A123CA731"));
        }
        [Fact]
        public void CheckRegionsCollection()
        {
            Assert.NotEmpty(Class1.regions);
        }
        [Fact]
        public void CheckNextMark()
        {
            Assert.IsType<string>(Class1.GetNextMarkAfter("B456BX052"));
        }
        [Fact]
        public void CheckNextMarkInRange()
        {
            Assert.IsType<string>(Class1.GetNextMarkAfterInRange("B456BX052", "B101BX052", "B952BX052"));
        }
        [Fact]
        public void CheckCountCombination()
        {
            Assert.Equal(3, Class1.GetCombinationsCountInRange("B101BX052", "B103BX052"));
        }
        [Fact]
        public void CheckMark()
        {
            Assert.Equal(true, Class1.CheckMark("B101BX052"));
        }
        [Fact]
        public void CheckNextMarkAfter()
        {
            Assert.Equal("B102BX052", Class1.GetNextMarkAfter("B101BX052"));
        }
        [Fact]
        public void CheckNextMarkAfterInRangeEqual()
        {
            Assert.Equal("B103BX052", Class1.GetNextMarkAfterInRange("B102BX052", "B101BX052", "B103BX052"));
        }
        #endregion

        #region Высокой сложности

        [Fact]
        public void NullArgumentOnCheck()
        {
            Assert.Throws<ArgumentException>(() => Class1.CheckMark(null));
        }
        [Fact]
        public void NullArgumentOnNext()
        {
            Assert.Throws<ArgumentException>(() => Class1.GetNextMarkAfter(null));
        }
        [Fact]
        public void NullArgumentOnRange()
        {
            Assert.Throws<ArgumentException>(() => Class1.GetNextMarkAfterInRange(null,null,null));
        }
        [Fact]
        public void NullArgumentOnCount()
        {
            Assert.Throws<ArgumentException>(() => Class1.GetCombinationsCountInRange(null,null));
        }
        [Fact]
        public void WrongArgumentOnCheck()
        {
            Assert.Throws<ArgumentException>(() => Class1.CheckMark("A4560BC1233"));
        }
        #endregion
    }
}