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<?php
/**
* Test: Nette\Iterators\CachingIterator basic usage.
*/
declare(strict_types=1);
use Nette\Iterators;
use Tester\Assert;
require __DIR__ . '/../bootstrap.php';
test('two items in array', function () {
$arr = ['Nette', 'Framework'];
$iterator = new Iterators\CachingIterator($arr);
$iterator->rewind();
Assert::true($iterator->valid());
Assert::true($iterator->isFirst());
Assert::false($iterator->isLast());
Assert::same(1, $iterator->getCounter());
$iterator->next();
Assert::true($iterator->valid());
Assert::false($iterator->isFirst());
Assert::true($iterator->isLast());
Assert::same(2, $iterator->getCounter());
$iterator->next();
Assert::false($iterator->valid());
$iterator->rewind();
Assert::true($iterator->isFirst());
Assert::false($iterator->isLast());
Assert::same(1, $iterator->getCounter());
Assert::false($iterator->isEmpty());
});
test('', function () {
$arr = ['Nette'];
$iterator = new Iterators\CachingIterator($arr);
$iterator->rewind();
Assert::true($iterator->valid());
Assert::true($iterator->isFirst());
Assert::true($iterator->isLast());
Assert::same(1, $iterator->getCounter());
$iterator->next();
Assert::false($iterator->valid());
$iterator->rewind();
Assert::true($iterator->isFirst());
Assert::true($iterator->isLast());
Assert::same(1, $iterator->getCounter());
Assert::false($iterator->isEmpty());
});
test('', function () {
$arr = [];
$iterator = new Iterators\CachingIterator($arr);
$iterator->next();
$iterator->next();
Assert::false($iterator->isFirst());
Assert::true($iterator->isLast());
Assert::same(0, $iterator->getCounter());
Assert::true($iterator->isEmpty());
});
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