<?php

declare(strict_types=1);

namespace Tests\Unit\Shared\ValueObjects\Pagination;

use Shared\ValueObjects\Pagination\PageNumber;

covers(PageNumber::class);

describe('PageNumber Value Object Unit Tests', function (): void {
    it('creates page number with default value', function (): void {
        // WHEN
        $page = new PageNumber();

        // THEN
        expect($page->value)->toBe(PageNumber::DEFAULT_PAGE)
            ->and($page->value())->toBe(PageNumber::DEFAULT_PAGE);
    });

    it('creates page number with explicit value', function (): void {
        // WHEN
        $page = new PageNumber(5);

        // THEN
        expect($page->value)->toBe(5)
            ->and($page->value())->toBe(5);
    });

    it('creates page number via of factory', function (): void {
        // WHEN
        $page = PageNumber::of(3);

        // THEN
        expect($page->value)->toBe(3)
            ->and($page->value())->toBe(3);
    });

    it('creates page number via default factory', function (): void {
        // WHEN
        $page = PageNumber::default();

        // THEN
        expect($page->value)->toBe(PageNumber::DEFAULT_PAGE);
    });

    it('rejects page number less than or equal to zero', function (int $invalidValue): void {
        // WHEN / THEN
        expect(fn (): PageNumber => new PageNumber($invalidValue))
            ->toThrow(\InvalidArgumentException::class, 'Page number must be greater than 0');
    })->with([
        'zero'           => [0],
        'negative'       => [-1],
        'large negative' => [-99],
    ]);

    it('implements equals correctly', function (): void {
        // GIVEN
        $page1 = new PageNumber(2);
        $page2 = new PageNumber(2);
        $page3 = new PageNumber(3);

        // THEN
        expect($page1->equals($page2))->toBeTrue()
            ->and($page1->equals($page3))->toBeFalse()
            ->and($page1->equals(2))->toBeFalse()
            ->and($page1->equals('2'))->toBeFalse()
            ->and($page1->equals(null))->toBeFalse();
    });

    it('converts to string via __toString', function (): void {
        // GIVEN
        $page = new PageNumber(4);

        // THEN
        expect((string) $page)->toBe('4');
    });

    it('serializes to json as integer', function (): void {
        // GIVEN
        $page = new PageNumber(7);

        // THEN
        expect($page->jsonSerialize())->toBe(7)
            ->and(json_encode($page))->toBe('7');
    });
});