<?php

declare(strict_types=1);

namespace Tests\Unit\Shared\Pagination;

use InvalidArgumentException;
use Shared\Pagination\PageSize;

covers(PageSize::class);

describe('PageSize Value Object Unit Tests', function (): void {
    it('creates a valid page size with default value', function (): void {
        // GIVEN / WHEN
        $size = new PageSize();

        // THEN
        expect($size->value)->toBe(25)
            ->and($size->value())->toBe(25)
            ->and((string) $size)->toBe('25')
            ->and(json_encode($size))->toBe('25');
    });

    it('creates a valid page size with specific value', function (): void {
        // GIVEN
        $value = 50;

        // WHEN
        $size = new PageSize($value);

        // THEN
        expect($size->value)->toBe(50)
            ->and($size->value())->toBe(50)
            ->and((string) $size)->toBe('50');
    });

    it('creates a page size using of() factory', function (): void {
        // GIVEN
        $value = 100;

        // WHEN
        $size = PageSize::of($value);

        // THEN
        expect($size->value)->toBe(100);
    });

    it('creates a page size using default() factory', function (): void {
        // GIVEN / WHEN
        $size = PageSize::default();

        // THEN
        expect($size->value)->toBe(25);
    });

    it('rejects invalid page sizes below 1', function (int $invalid): void {
        // GIVEN / WHEN
        expect(fn () => new PageSize($invalid))
            // THEN
            ->toThrow(InvalidArgumentException::class, 'Page size must be greater than 0');
    })->with([0, -1, -10, -100]);

    it('rejects page size exceeding max allowed', function (): void {
        // GIVEN / WHEN
        expect(fn () => new PageSize(10001))
            // THEN
            ->toThrow(InvalidArgumentException::class, 'Page size must be less than or equal to 10000');
    });

    it('correctly checks equality with another instance', function (): void {
        // GIVEN
        $size1 = new PageSize(20);
        $size2 = new PageSize(20);
        $size3 = new PageSize(50);

        // THEN
        expect($size1->equals($size2))->toBeTrue()
            ->and($size1->equals($size3))->toBeFalse()
            ->and($size1->equals(20))->toBeFalse()
            ->and($size1->equals(null))->toBeFalse()
            ->and($size1->equals('20'))->toBeFalse();
    });
});