using ShippingCosts.Contracts;
using ShippingCosts.Implementations;

namespace ShippingCosts.Test;

public sealed class SelfPickupTests
{
    [Fact]
    public void InterfaceAndClassHierarchy()
    {
        var calculator = new SelfPickup();

        calculator.Should()
                  .NotBeAssignableTo<ShippingCostCalculatorBase>("independent class")
                  .And.BeAssignableTo<IShippingCostCalculator>("but implements interface");
    }

    [Fact]
    public void CarrierName()
    {
        new SelfPickup().CarrierName.Should().Be("Self Pickup");
    }

    [Theory]
    [InlineData("Italy", 5, 10, 15, 20)]
    [InlineData("Israel", 10, 20, 30, 40)]
    [InlineData("Malaysia", 1, 2, 3, 4)]
    public void CalculateShippingCosts_AlwaysZero(string targetCountry, int width, int height, int depth, double weight)
    {
        var box = Substitute.For<IMeasuredBox>();
        box.Width.Returns(width);
        box.Height.Returns(height);
        box.Depth.Returns(depth);
        box.Weight.Returns(weight);

        new SelfPickup().CalculateShippingCosts(targetCountry, box).Should()
                        .Be(0M, "shipping cost is always zero if picking the item up yourself");
    }
}