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✏️ Editing: PhpUnitSetUpTearDownVisibilityFixer.php

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<?php

declare(strict_types=1);

/*
 * This file is part of PHP CS Fixer.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *     Dariusz Rumiński <dariusz.ruminski@gmail.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */

namespace PhpCsFixer\Fixer\PhpUnit;

use PhpCsFixer\Fixer\AbstractPhpUnitFixer;
use PhpCsFixer\FixerDefinition\CodeSample;
use PhpCsFixer\FixerDefinition\FixerDefinition;
use PhpCsFixer\FixerDefinition\FixerDefinitionInterface;
use PhpCsFixer\Tokenizer\Token;
use PhpCsFixer\Tokenizer\Tokens;
use PhpCsFixer\Tokenizer\TokensAnalyzer;

/**
 * @author Gert de Pagter
 */
final class PhpUnitSetUpTearDownVisibilityFixer extends AbstractPhpUnitFixer
{
    public function getDefinition(): FixerDefinitionInterface
    {
        return new FixerDefinition(
            'Changes the visibility of the `setUp()` and `tearDown()` functions of PHPUnit to `protected`, to match the PHPUnit TestCase.',
            [
                new CodeSample(
                    '<?php
final class MyTest extends \PHPUnit_Framework_TestCase
{
    private $hello;
    public function setUp()
    {
        $this->hello = "hello";
    }

public function tearDown()
    {
        $this->hello = null;
    }
}
'
                ),
            ],
            null,
            'This fixer may change functions named `setUp()` or `tearDown()` outside of PHPUnit tests, '.
            'when a class is wrongly seen as a PHPUnit test.'
        );
    }

public function isRisky(): bool
    {
        return true;
    }

protected function applyPhpUnitClassFix(Tokens $tokens, int $startIndex, int $endIndex): void
    {
        $counter = 0;
        $tokensAnalyzer = new TokensAnalyzer($tokens);

for ($i = $endIndex - 1; $i > $startIndex; --$i) {
            if (2 === $counter) {
                break; // we've seen both method we are interested in, so stop analyzing this class
            }

if (!$this->isSetupOrTearDownMethod($tokens, $i)) {
                continue;
            }

++$counter;
            $visibility = $tokensAnalyzer->getMethodAttributes($i)['visibility'];

if (T_PUBLIC === $visibility) {
                $index = $tokens->getPrevTokenOfKind($i, [[T_PUBLIC]]);
                $tokens[$index] = new Token([T_PROTECTED, 'protected']);

continue;
            }

if (null === $visibility) {
                $tokens->insertAt($i, [new Token([T_PROTECTED, 'protected']), new Token([T_WHITESPACE, ' '])]);
            }
        }
    }

private function isSetupOrTearDownMethod(Tokens $tokens, int $index): bool
    {
        $tokensAnalyzer = new TokensAnalyzer($tokens);

$isMethod = $tokens[$index]->isGivenKind(T_FUNCTION) && !$tokensAnalyzer->isLambda($index);
        if (!$isMethod) {
            return false;
        }

$functionNameIndex = $tokens->getNextMeaningfulToken($index);
        $functionName = strtolower($tokens[$functionNameIndex]->getContent());

return 'setup' === $functionName || 'teardown' === $functionName;
    }
}

✏️ Editing: PhpUnitSetUpTearDownVisibilityFixer.php

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