<?php

declare(strict_types=1);

namespace Tests\Unit\Domain\Models\ValueObjects\Coupon;

use Domain\Models\ValueObjects\Coupon\CouponQuantity;

covers(CouponQuantity::class);

describe('coupon quantity', function (): void {
    it('creates a valid coupon quantity', function (): void {
        // GIVEN
        $quantity = 10;

        // WHEN
        $couponQuantity = new CouponQuantity($quantity);

        // THEN
        expect($couponQuantity)->toBeInstanceOf(CouponQuantity::class)
            ->and($couponQuantity->quantity)->toBe($quantity);
    });

    it('rejects a quantity of zero', function (): void {
        // WHEN
        $action = fn (): CouponQuantity => new CouponQuantity(0);

        // THEN
        expect($action)->toThrow(\DomainException::class, 'CouponQuantity quantity must be positive.');
    });

    it('rejects a negative quantity', function (): void {
        // WHEN
        $action = fn (): CouponQuantity => new CouponQuantity(-1);

        // THEN
        expect($action)->toThrow(\DomainException::class, 'CouponQuantity quantity must be positive.');
    });
});