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<?php
/**
* Test: Nette\Utils\Arrays::mapWithKeys()
*/
declare(strict_types=1);
use Nette\Utils\Arrays;
use Tester\Assert;
require __DIR__ . '/../bootstrap.php';
test('empty array', function () {
$arr = [];
$log = [];
$res = Arrays::mapWithKeys(
$arr,
function ($v, $k, $arr) use (&$log) {
$log[] = func_get_args();
return [];
},
);
Assert::same([], $res);
Assert::same([], $log);
});
test('list', function () {
$arr = ['a', 'b'];
$log = [];
$res = Arrays::mapWithKeys(
$arr,
function ($v, $k, $arr) use (&$log) {
$log[] = func_get_args();
return ["_$k", "_$v"];
},
);
Assert::same(['_0' => '_a', '_1' => '_b'], $res);
Assert::same([['a', 0, $arr], ['b', 1, $arr]], $log);
});
test('array with keys', function () {
$arr = ['x' => 'a', 'y' => 'b'];
$log = [];
$res = Arrays::mapWithKeys(
$arr,
function ($v, $k, $arr) use (&$log) {
$log[] = func_get_args();
return ["_$k", "_$v"];
},
);
Assert::same(['_x' => '_a', '_y' => '_b'], $res);
Assert::same([['a', 'x', $arr], ['b', 'y', $arr]], $log);
});
test('skipped elements', function () {
$arr = ['x' => 'a', 'y' => 'b', 'z' => 'c'];
$res = Arrays::mapWithKeys(
$arr,
fn($v, $k) => $k === 'y' ? null : ["_$k", "_$v"],
);
Assert::same(['_x' => '_a', '_z' => '_c'], $res);
});
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