basic-computer-games/00_Common/dotnet/Games.Common.Test/IO/TokenTests.cs

using FluentAssertions;
using Xunit;

namespace Games.Common.IO
{
    public class TokenTests
    {
        [Theory]
        [MemberData(nameof(TokenTestCases))]
        public void Ctor_PopulatesProperties(string value, bool isNumber, float number)
        {
            var expected = new { String = value, IsNumber = isNumber, Number = number };

            var token = new Token(value);

            token.Should().BeEquivalentTo(expected);
        }

        public static TheoryData<string, bool, float> TokenTestCases() => new()
        {
            { "", false, float.NaN },
            { "abcde", false, float.NaN },
            { "123  ", true, 123 },
            { "+42  ", true, 42 },
            { "-42  ", true, -42 },
            { "+3.14159  ", true, 3.14159F },
            { "-3.14159  ", true, -3.14159F },
            { "   123", false, float.NaN },
            { "1.2e4", true, 12000 },
            { "2.3e-5", true, 0.000023F },
            { "1e100", true, float.MaxValue },
            { "-1E100", true, float.MinValue },
            { "1E-100", true, 0 },
            { "-1e-100", true, 0 },
            { "100abc", true, 100 },
            { "1,2,3", true, 1 },
            { "42,a,b", true, 42 },
            { "1.2.3", true, 1.2F },
            { "12e.5", false, float.NaN },
            { "12e0.5", true, 12 }
        };
    }
}