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<?php
/**
* Test: Nette\Utils\Iterables::map()
*/
declare(strict_types=1);
use Nette\Utils\Iterables;
use Tester\Assert;
require __DIR__ . '/../bootstrap.php';
test('empty iterable', function () {
$arr = new ArrayIterator([]);
$log = [];
$res = Iterables::map(
$arr,
function ($v, $k, $arr) use (&$log) {
$log[] = func_get_args();
return true;
},
);
Assert::same([], iterator_to_array($res));
Assert::same([], $log);
});
test('non-empty iterable', function () {
$arr = new ArrayIterator(['x' => 'a', 'y' => 'b']);
$log = [];
$res = Iterables::map(
$arr,
function ($v, $k, $arr) use (&$log) {
$log[] = func_get_args();
return $v . $v;
},
);
Assert::same(['x' => 'aa', 'y' => 'bb'], iterator_to_array($res));
Assert::same([['a', 'x', $arr], ['b', 'y', $arr]], $log);
});
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