<?php

declare(strict_types=1);

namespace Tests\Unit\Shared;

use Shared\Pagination;

covers(Pagination::class);

describe('Pagination Value Object', function (): void {
    it('can be created from page and page size', function (): void {
        // GIVEN
        $page = 2;
        $size = 20;

        // WHEN
        $pagination = Pagination::ofPage($page, $size);

        // THEN
        expect($pagination->from())->toBe(20)
            ->and($pagination->to())->toBe(39)
            ->and($pagination->pageSize())->toBe(20)
            ->and($pagination->pageNumber())->toBe(2);
    });

    it('can be created from offset and limit', function (): void {
        // GIVEN
        $offset = 20;
        $limit  = 10;

        // WHEN
        $pagination = Pagination::ofOffsetAndLimit($offset, $limit);

        // THEN
        expect($pagination->from())->toBe(20)
            ->and($pagination->to())->toBe(29)
            ->and($pagination->pageSize())->toBe(10)
            ->and($pagination->pageNumber())->toBe(3);
    });

    it('can be created using first page', function (): void {
        // GIVEN
        $pageSize = 15;

        // WHEN
        $pagination = Pagination::firstPage($pageSize);

        // THEN
        expect($pagination->from())->toBe(0)
            ->and($pagination->to())->toBe(14)
            ->and($pagination->pageSize())->toBe(15)
            ->and($pagination->pageNumber())->toBe(1);
    });

    it('throws exception for invalid page size or negative index', function (): void {
        // GIVEN / WHEN / THEN
        expect(fn () => Pagination::ofPage(0, 10))
            ->toThrow(\InvalidArgumentException::class);
    });
});