using Nonemm.Core;

namespace Nonemm.Session.Tests;

public class BandMemoryTests
{
    [Fact]
    public void AnUnvisitedBandStartsWhereThatPartOfItStarts()
    {
        BandMemory memory = new();

        Assert.Equal(Bands.Band20M.Low, memory.Where(Bands.Band20M, ModeCategory.Cw, BandPlan.Default));
        Assert.Equal(
            Frequency.FromKilohertz(14_150),
            memory.Where(Bands.Band20M, ModeCategory.Phone, BandPlan.Default));
    }

    [Fact]
    public void TheBandComesBackWhereItWasLeft()
    {
        BandMemory memory = new();
        memory.Remember(Frequency.FromKilohertz(14_032), Modes.Cw);
        memory.Remember(Frequency.FromKilohertz(7_012), Modes.Cw);

        Assert.Equal(
            Frequency.FromKilohertz(14_032),
            memory.Where(Bands.Band20M, ModeCategory.Cw, BandPlan.Default));
        Assert.Equal(
            Frequency.FromKilohertz(7_012),
            memory.Where(Bands.Band40M, ModeCategory.Cw, BandPlan.Default));
    }

    [Fact]
    public void EachModeOnABandIsRememberedOnItsOwn()
    {
        BandMemory memory = new();
        memory.Remember(Frequency.FromKilohertz(14_032), Modes.Cw);
        memory.Remember(Frequency.FromKilohertz(14_240), Modes.Usb);

        Assert.Equal(
            Frequency.FromKilohertz(14_032),
            memory.Where(Bands.Band20M, ModeCategory.Cw, BandPlan.Default));
        Assert.Equal(
            Frequency.FromKilohertz(14_240),
            memory.Where(Bands.Band20M, ModeCategory.Phone, BandPlan.Default));
    }

    [Fact]
    public void ABandWithNoPlanStartsAtItsBottomEdge()
    {
        BandMemory memory = new();

        Assert.Equal(
            Bands.Band60M.Low,
            memory.Where(Bands.Band60M, ModeCategory.Phone, BandPlan.Default));
    }
}