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✏️ Editing: CachingIterator.width.phpt Writable

<?php

/**
 * Test: Nette\Iterators\CachingIterator width.
 */

declare(strict_types=1);

use Nette\Iterators;
use Tester\Assert;

require __DIR__ . '/../bootstrap.php';

test('', function () {
	$arr = ['The', 'Nette', 'Framework'];

$iterator = new Iterators\CachingIterator($arr);
	$iterator->rewind();

$iterator->rewind();
	Assert::true($iterator->valid());
	Assert::true($iterator->isFirst(0));
	Assert::false($iterator->isLast(0));
	Assert::true($iterator->isFirst(1));
	Assert::true($iterator->isLast(1));
	Assert::true($iterator->isFirst(2));
	Assert::false($iterator->isLast(2));

$iterator->next();
	Assert::true($iterator->valid());
	Assert::false($iterator->isFirst(0));
	Assert::false($iterator->isLast(0));
	Assert::true($iterator->isFirst(1));
	Assert::true($iterator->isLast(1));
	Assert::false($iterator->isFirst(2));
	Assert::true($iterator->isLast(2));

$iterator->next();
	Assert::true($iterator->valid());
	Assert::false($iterator->isFirst(0));
	Assert::true($iterator->isLast(0));
	Assert::true($iterator->isFirst(1));
	Assert::true($iterator->isLast(1));
	Assert::true($iterator->isFirst(2));
	Assert::true($iterator->isLast(2));

$iterator->next();
	Assert::false($iterator->valid());
});

test('', function () {
	$iterator = new Iterators\CachingIterator([]);
	Assert::false($iterator->isFirst(0));
	Assert::true($iterator->isLast(0));
	Assert::false($iterator->isFirst(1));
	Assert::true($iterator->isLast(1));
	Assert::false($iterator->isFirst(2));
	Assert::true($iterator->isLast(2));
});

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