TR Plaka Kodu C# REGEX

plaka.cs

/*
Kontrol ettiği plaka formatları:

(1-81) A 9999
(1-81) A 99999
(1-81) AA 999
(1-81) AA 9999
(1-81) AAA 99
*/

public bool Validate(string plaka)
{
  Regex regex = new Regex("(0[1-9]|[1-7][0-9]|8[01])(([A-Z])(\\d{4,5})|([A-Z]{2})(\\d{3,4})|([A-Z]{3})(\\d{2}))");
  return regex.IsMatch(plaka);
}

UnitTests.cs

using Xunit;

namespace plaka.Tests
{
    public class UnitTests
    {
        plaka.Core.Validator validator;
        public UnitTests()
        {
            validator = new Core.Validator();
        }

        [Fact(DisplayName = "Given 34 AAA 99 Must Pass")]
        public void Given_34AAA99_Must_Fail()
        {
            var result = validator.Validate("34AAA99");
            Assert.True(result);
        }

        [Fact(DisplayName = "Given 34 AA 9999 Must Pass")]
        public void Given_34AA9999_Must_Fail()
        {
            var result = validator.Validate("34AA9999");
            Assert.True(result);
        }

        [Fact(DisplayName = "Given 34 AA 999 Must Pass")]
        public void Given_34AA999_Must_Fail()
        {
            var result = validator.Validate("34AA999");
            Assert.True(result);
        }

        [Fact(DisplayName = "Given 34 A 9999 Must Pass")]
        public void Given_34A9999_Must_Fail()
        {
            var result = validator.Validate("34A9999");
            Assert.True(result);
        }

        [Fact(DisplayName = "Given 34 A 99999 Must Pass")]
        public void Given_34A99999_Must_Fail()
        {
            var result = validator.Validate("34A99999");
            Assert.True(result);
        }

        [Fact(DisplayName = "Given 91 AA BBB Must Fail")]
        public void Given_91AABBB_Must_Fail()
        {
            var result = validator.Validate("91AABBB");
            Assert.False(result);
        }

        [Fact(DisplayName = "Given 3456789 Must Fail")]
        public void Given_3456789_Must_Fail()
        {
            var result = validator.Validate("3456789");
            Assert.False(result);
        }
    }
}