card_game/tests/Game.Core.Tests/PackTests.cs

using CardGame.Core;
using Xunit;

namespace Game.Core.Tests;

public sealed class PackTests
{
    private static List<PackDefinition> Catalog() =>
        PackJson.LoadDirectory(Path.Combine(AppContext.BaseDirectory, "content", "packs"));

    [Fact]
    public void Base_pack_is_always_in_the_run_pool()
    {
        var state = MatchSetup.Create(
            1,
            Cards.Repeat(Cards.Wisp, 10),
            Cards.Repeat(Cards.Wisp, 10),
            Cards.Catalog,
            shuffle: false);
        var unlocked = Packs.Unlocked(state, 0, Catalog());
        Assert.Contains(unlocked, p => p.Id == "pack.example.base");
        Assert.DoesNotContain(unlocked, p => p.Id == "pack.example.vitality");
    }

    [Fact]
    public void Healing_unlocks_vitality_pack()
    {
        var state = MatchSetup.Create(
            1,
            Cards.Repeat(Cards.Salve, 10),
            Cards.Repeat(Cards.Wisp, 10),
            Cards.Catalog,
            shuffle: false);
        state.Players[0].Life = 10;
        state.Players[0].Energy = 1;
        var salve = state.Players[0].Hand[0];
        state = RulesEngine.Execute(state, new PlayCardAction(0, salve.Id));
        Assert.Equal(2, state.Players[0].Run.HealReceived);
        Assert.Contains(Packs.Unlocked(state, 0, Catalog()), p => p.Id == "pack.example.vitality");
    }

    [Fact]
    public void Fuse_expiry_unlocks_aftermath_for_the_owner()
    {
        var state = MatchSetup.Create(
            1,
            Cards.Repeat(Cards.Fuse, 10),
            Cards.Repeat(Cards.Wisp, 10),
            Cards.Catalog,
            shuffle: false);
        var fuse = state.Players[0].Hand[0];
        state = RulesEngine.Execute(state, new PlayCardAction(0, fuse.Id));
        state = RulesEngine.Execute(state, new EndTurnAction(0));
        Assert.Equal(1, state.Players[0].Run.FriendlyDestroyed);
        Assert.Contains(Packs.Unlocked(state, 0, Catalog()), p => p.Id == "pack.example.aftermath");
    }
}