PKHeX/Tests/PKHeX.Core.Tests/PKM/PKMTests.cs

using System;
using FluentAssertions;
using PKHeX.Core;
using Xunit;

namespace PKHeX.Tests.PKM;

public class MetDateTests
{
    [Fact]
    public void MetDateNullWhenDateComponentsAreAllZero()
    {
        var pk = new PK7
        {
            Met_Day = 0,
            Met_Month = 0,
            Met_Year = 0,
        };

        pk.MetDate.HasValue.Should().BeFalse();
    }

    [Fact]
    public void MetDateReturnsCorrectDate()
    {
        var pk = new PK7
        {
            Met_Day = 10,
            Met_Month = 8,
            Met_Year = 16,
        };

        pk.MetDate.GetValueOrDefault().Should().Be(new DateTime(2016, 8, 10).Date);
    }

    [Fact]
    public void MetDateCalculatesYear0Correctly()
    {
        var pk = new PK7
        {
            Met_Day = 1,
            Met_Month = 1,
            Met_Year = 0,
        };

        pk.MetDate.GetValueOrDefault().Date.Year.Should().Be(2000);
    }

    [Fact]
    public void SettingToNullZerosComponents()
    {
        var pk = new PK7
        {
            Met_Day = 12,
            Met_Month = 12,
            Met_Year = 12,
        };

        pk.Met_Day.Should().Be(12);
        pk.Met_Month.Should().Be(12);
        pk.Met_Year.Should().Be(12);

        pk.MetDate = null;

        pk.Met_Day.Should().Be(0);
        pk.Met_Month.Should().Be(0);
        pk.Met_Year.Should().Be(0);
    }

    [Fact]
    public void SettingMetDateSetsComponents()
    {
        var pk = new PK7
        {
            Met_Day = 12,
            Met_Month = 12,
            Met_Year = 12,
        };

        pk.Met_Day.Should().Be(12);
        pk.Met_Month.Should().Be(12);
        pk.Met_Year.Should().Be(12);

        pk.MetDate = new DateTime(2005, 5, 5);

        pk.Met_Day.Should().Be(5);
        pk.Met_Month.Should().Be(5);
        pk.Met_Year.Should().Be(5);
    }
}

public class EggMetDateTests
{
    [Fact]
    public void EggMetDateNullWhenDateComponentsAreAllZero()
    {
        var pk = new PK7
        {
            Egg_Day = 0,
            Egg_Month = 0,
            Egg_Year = 0,
        };

        pk.EggMetDate.HasValue.Should().BeFalse();
    }

    [Fact]
    public void EggMetDateReturnsCorrectDate()
    {
        var pk = new PK7
        {
            Egg_Day = 10,
            Egg_Month = 8,
            Egg_Year = 16,
        };

        pk.EggMetDate.GetValueOrDefault().Should().Be(new DateTime(2016, 8, 10).Date);
    }

    [Fact]
    public void EggMetDateCalculatesYear0Correctly()
    {
        var pk = new PK7
        {
            Egg_Day = 1,
            Egg_Month = 1,
            Egg_Year = 0,
        };

        pk.EggMetDate.GetValueOrDefault().Date.Year.Should().Be(2000);
    }

    [Fact]
    public void SettingEggMetDateToNullZerosComponents()
    {
        var pk = new PK7
        {
            Egg_Day = 12,
            Egg_Month = 12,
            Egg_Year = 12,
        };

        pk.Egg_Day.Should().Be(12);
        pk.Egg_Month.Should().Be(12);
        pk.Egg_Year.Should().Be(12);

        pk.EggMetDate = null;

        pk.Egg_Day.Should().Be(0);
        pk.Egg_Month.Should().Be(0);
        pk.Egg_Year.Should().Be(0);
    }

    [Fact]
    public void SettingEggMetDateSetsComponents()
    {
        var pk = new PK7
        {
            Egg_Day = 12,
            Egg_Month = 12,
            Egg_Year = 12,
        };

        pk.Egg_Day.Should().Be(12);
        pk.Egg_Month.Should().Be(12);
        pk.Egg_Year.Should().Be(12);

        pk.EggMetDate = new DateTime(2005, 5, 5);

        pk.Egg_Day.Should().Be(5);
        pk.Egg_Month.Should().Be(5);
        pk.Egg_Year.Should().Be(5);
    }
}