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<?php
/**
* Test: Nette\Utils\Arrays::renameKey() - preserves references
*/
declare(strict_types=1);
use Nette\Utils\Arrays;
use Tester\Assert;
require __DIR__ . '/../bootstrap.php';
test('preserves references when renaming key', function () {
$arr = [
1 => 'a',
2 => 'b',
];
$arr2 = [
1 => &$arr[1],
2 => &$arr[2],
];
Arrays::renameKey($arr, '1', 'new1');
// Modify via reference
$arr2[1] = 'A';
$arr2[2] = 'B';
// Should reflect in renamed array
Assert::same('A', $arr['new1']);
Assert::same('B', $arr[2]);
});
test('preserves references when renaming to existing numeric key', function () {
$arr = [
1 => 'a',
2 => 'b',
];
$arr2 = [
1 => &$arr[1],
2 => &$arr[2],
];
Arrays::renameKey($arr, '1', 'new1');
Arrays::renameKey($arr, 'new1', 2);
// Modify via reference
$arr2[1] = 'AA';
$arr2[2] = 'BB';
// The value at key 2 should now be the renamed value with preserved reference
Assert::same('AA', $arr[2]);
});
test('maintains reference through multiple renames', function () {
$value = 'original';
$arr = ['key' => &$value];
Arrays::renameKey($arr, 'key', 'temp');
Arrays::renameKey($arr, 'temp', 'final');
// Modify original variable
$value = 'modified';
// Should reflect in array with renamed key
Assert::same('modified', $arr['final']);
});
test('reference is preserved when renaming to same key', function () {
$value = 'test';
$arr = ['key' => &$value];
Arrays::renameKey($arr, 'key', 'key');
$value = 'changed';
Assert::same('changed', $arr['key']);
});
test('complex reference scenario with nested values', function () {
$shared = ['shared' => 'data'];
$arr = [
'a' => &$shared,
'b' => ['nested' => 'value'],
];
Arrays::renameKey($arr, 'a', 'shared_ref');
// Modify shared reference
$shared['shared'] = 'modified';
// Should be reflected in renamed key
Assert::same(['shared' => 'modified'], $arr['shared_ref']);
});
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