EntropyAnalysisExtensionsTests.cs

using UnitsNet.NumberExtensions.NumberToTemperature;

namespace VCRC.Tests;

public sealed class EntropyAnalysisExtensionsTests
{
    private readonly IList<IEntropyAnalysable> _cycles;
    private readonly IList<Temperature> _indoor;
    private readonly IList<Temperature> _indoorExtended;
    private readonly IList<Temperature> _outdoor;

    public EntropyAnalysisExtensionsTests()
    {
        _indoor = Enumerable.Range(18, 5).Select(i => i.DegreesCelsius()).ToList();
        _indoorExtended = Enumerable.Range(18, 6).Select(i => i.DegreesCelsius()).ToList();
        _outdoor = Enumerable.Range(36, 5).Select(i => i.DegreesCelsius()).ToList();
        _cycles = Enumerable
            .Range(0, _indoor.Count)
            .Select(i => CreateVCRC(_indoor[i], _outdoor[i]))
            .ToList();
    }

    [Fact]
    public void EntropyAnalysisInRange_ListsOfTemperaturesWithDifferentCount_ThrowsArgumentException()
    {
        Action action = () => _cycles.EntropyAnalysis(_indoorExtended, _outdoor);
        action
            .Should()
            .Throw<ArgumentException>()
            .WithMessage("Inputs should have the same length!");
    }

    [Fact]
    public void EntropyAnalysisInRange_Always_ReturnsAveragedEntropyAnalysisResult() =>
        _cycles
            .EntropyAnalysis(_indoor, _outdoor)
            .Should()
            .Be(
                _cycles
                    .Select((cycle, i) => cycle.EntropyAnalysis(_indoor[i], _outdoor[i]))
                    .ToList()
                    .Average()
            );

    private static IEntropyAnalysable CreateVCRC(Temperature indoor, Temperature outdoor)
    {
        const FluidsList refrigerantName = FluidsList.R32;
        var evaporator = new Evaporator(
            refrigerantName,
            indoor - TemperatureDelta.FromKelvins(7),
            TemperatureDelta.FromKelvins(5)
        );
        var compressor = new Compressor(80.Percent());
        var condenser = new Condenser(
            refrigerantName,
            outdoor + TemperatureDelta.FromKelvins(10),
            TemperatureDelta.FromKelvins(3)
        );
        return new SimpleVCRC(evaporator, compressor, condenser);
    }
}