ldc-mesbr-app/tests/Unit/Domain/Models/ValueObjects/Campaign/CampaignCouponArrayTest.php

<?php

declare(strict_types=1);

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

use Domain\Models\ValueObjects\Campaign\CampaignCoupon;
use Domain\Models\ValueObjects\Campaign\CampaignCouponArray;
use Domain\Models\ValueObjects\Coupon\CouponCode;
use Domain\Models\ValueObjects\PrintRules;

covers(CampaignCouponArray::class);

describe('campaign coupon array', function (): void {
    $coupon = new CampaignCoupon(
        new CouponCode('AAA01'),
        new PrintRules(maxPerCustomer: 3),
    );

    $coupon2 = new CampaignCoupon(
        new CouponCode('AAA02'),
        new PrintRules(maxPerCustomer: 3),
    );

    it('creates an array with valid coupons', function () use ($coupon, $coupon2): void {
        // GIVEN
        $coupons = [$coupon, $coupon2];

        // WHEN
        $array = new CampaignCouponArray($coupons);

        // THEN
        expect($array->value)->toBe($coupons)
            ->and($array->value)->toHaveCount(2);
    });

    it('rejects an empty array', function (): void {
        // GIVEN / WHEN
        $action = fn (): CampaignCouponArray => new CampaignCouponArray([]);

        // THEN
        expect($action)->toThrow(\DomainException::class, 'Coupons requires at least one CampaignCoupon.');
    });

    it('rejects a non-coupon element', function (): void {
        // GIVEN / WHEN
        $action = fn (): CampaignCouponArray => new CampaignCouponArray(['PC1']);

        // THEN
        expect($action)->toThrow(\DomainException::class, 'Coupons must be CampaignCoupon instances.');
    });

    it('rejects a non-coupon element mixed with valid coupons', function () use ($coupon): void {
        // GIVEN
        $coupons = [$coupon, 'PC1'];

        // WHEN
        $action = fn (): CampaignCouponArray => new CampaignCouponArray($coupons);

        // THEN
        expect($action)->toThrow(\DomainException::class, 'Coupons must be CampaignCoupon instances.');
    });

    it('rejects the same coupon twice at initialisation', function (): void {
        // GIVEN
        $coupons = [
            new CampaignCoupon(new CouponCode('AAA01')),
            new CampaignCoupon(new CouponCode('AAA01')),
        ];

        // WHEN
        $action = fn (): CampaignCouponArray => new CampaignCouponArray($coupons);

        //WHEN / THEN
        expect($action)->toThrow(\DomainException::class, 'Coupon "AAA01" is present more than once.');
    });

    it('adds a coupon to a campaign coupon array', function (): void {
        // GIVEN
        $coupons = [
            new CampaignCoupon(new CouponCode('AAA01')),
            new CampaignCoupon(new CouponCode('AAA02')),
        ];
        $array   = new CampaignCouponArray($coupons);

        // WHEN
        $array = $array->addCoupon(new CampaignCoupon(new CouponCode('AAA03')));

        // THEN
        expect($array->value)->toHaveCount(3);
    });

    it('rejects the same coupon twice on update', function (): void {
        // GIVEN
        $coupons = [
            new CampaignCoupon(new CouponCode('AAA01')),
            new CampaignCoupon(new CouponCode('AAA02')),
        ];
        $array   = new CampaignCouponArray($coupons);

        // WHEN
        $action = fn () => $array->addCoupon(new CampaignCoupon(new CouponCode('AAA01')));

        // THEN
        expect($action)->toThrow(\DomainException::class, 'Coupon is already in the campaign.');
    });

    it('removes a coupon to a campaign coupon array', function () use ($coupon, $coupon2): void {
        // GIVEN
        $coupons = [$coupon, $coupon2];
        $array   = new CampaignCouponArray($coupons);

        // WHEN
        $array = $array->removeCoupon($coupon2->couponCode);

        // THEN
        expect($array->value)->toHaveCount(1);
    });

    it('cant remove a coupon which is not on the campaign', function (): void {
        // GIVEN
        $coupons = [
            new CampaignCoupon(new CouponCode('AAA01')),
            new CampaignCoupon(new CouponCode('AAA02')),
        ];
        $array   = new CampaignCouponArray($coupons);

        // WHEN
        $action = fn () => $array->removeCoupon(new CouponCode('AAA03'));

        // THEN
        expect($action)->toThrow(\DomainException::class, 'Coupon is not in the campaign.');
    });

    it('returns all coupon codes', function () use ($coupon, $coupon2): void {
        // GIVEN
        $coupons = [$coupon, $coupon2];
        $array   = new CampaignCouponArray($coupons);

        // WHEN
        $result = $array->getCouponCodes();

        // THEN
        expect($result)->toBe([$coupon->couponCode, $coupon2->couponCode]);
    });

    it('returns the requested coupon', function () use ($coupon, $coupon2): void {
        // GIVEN
        $coupons = [$coupon, $coupon2];
        $array   = new CampaignCouponArray($coupons);

        // WHEN
        $result = $array->findCoupon($coupon->couponCode);

        // THEN
        expect($result)->toBe($coupon);
    });

    it('returns null for an unexisting coupon', function () use ($coupon, $coupon2): void {
        // GIVEN
        $coupons = [$coupon];
        $array   = new CampaignCouponArray($coupons);

        // WHEN
        $result = $array->findCoupon($coupon2->couponCode);

        // THEN
        expect($result)->toBeNull();
    });
});