namespace Mr.BrickAdventures.Progression.Tests;

public class SkillLevelTests
{
    [Fact]
    public void There_is_no_level_zero_because_unowned_is_absence()
    {
        // SkillData.Level defaults to 1 today, so "not owned" and "owned at level 1" are the same
        // value and nothing can tell them apart. A Playthrough records only the skills it owns, so
        // absence from that record is the only way to say "unowned" — level zero must not exist.
        Assert.Throws<ArgumentOutOfRangeException>(() => SkillLevel.Of(0));
    }
}