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<?php
/*
* 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\AbstractFixer;
use PhpCsFixer\DocBlock\DocBlock;
use PhpCsFixer\DocBlock\Line;
use PhpCsFixer\Fixer\ConfigurationDefinitionFixerInterface;
use PhpCsFixer\FixerConfiguration\FixerConfigurationResolver;
use PhpCsFixer\FixerConfiguration\FixerOptionBuilder;
use PhpCsFixer\FixerDefinition\CodeSample;
use PhpCsFixer\FixerDefinition\FixerDefinition;
use PhpCsFixer\Indicator\PhpUnitTestCaseIndicator;
use PhpCsFixer\Preg;
use PhpCsFixer\Tokenizer\Token;
use PhpCsFixer\Tokenizer\Tokens;
use PhpCsFixer\Tokenizer\TokensAnalyzer;
use PhpCsFixer\Utils;
/**
* @author Filippo Tessarotto <zoeslam@gmail.com>
*/
final class PhpUnitMethodCasingFixer extends AbstractFixer implements ConfigurationDefinitionFixerInterface
{
/**
* @internal
*/
const CAMEL_CASE = 'camel_case';
/**
* @internal
*/
const SNAKE_CASE = 'snake_case';
/**
* {@inheritdoc}
*/
public function getDefinition()
{
return new FixerDefinition(
'Enforce camel (or snake) case for PHPUnit test methods, following configuration.',
[
new CodeSample(
'<?php
class MyTest extends \\PhpUnit\\FrameWork\\TestCase
{
public function test_my_code() {}
}
'
),
new CodeSample(
'<?php
class MyTest extends \\PhpUnit\\FrameWork\\TestCase
{
public function testMyCode() {}
}
',
['case' => self::SNAKE_CASE]
),
]
);
}
/**
* {@inheritdoc}
*/
public function isCandidate(Tokens $tokens)
{
return $tokens->isAllTokenKindsFound([T_CLASS, T_FUNCTION]);
}
/**
* {@inheritdoc}
*/
protected function applyFix(\SplFileInfo $file, Tokens $tokens)
{
$phpUnitTestCaseIndicator = new PhpUnitTestCaseIndicator();
foreach ($phpUnitTestCaseIndicator->findPhpUnitClasses($tokens) as $indexes) {
$this->applyCasing($tokens, $indexes[0], $indexes[1]);
}
}
/**
* {@inheritdoc}
*/
protected function createConfigurationDefinition()
{
return new FixerConfigurationResolver([
(new FixerOptionBuilder('case', 'Apply camel or snake case to test methods'))
->setAllowedValues([self::CAMEL_CASE, self::SNAKE_CASE])
->setDefault(self::CAMEL_CASE)
->getOption(),
]);
}
/**
* @param Tokens $tokens
* @param int $startIndex
* @param int $endIndex
*/
private function applyCasing(Tokens $tokens, $startIndex, $endIndex)
{
for ($index = $endIndex - 1; $index > $startIndex; --$index) {
if (!$this->isTestMethod($tokens, $index)) {
continue;
}
$functionNameIndex = $tokens->getNextMeaningfulToken($index);
$functionName = $tokens[$functionNameIndex]->getContent();
$newFunctionName = $this->updateMethodCasing($functionName);
if ($newFunctionName !== $functionName) {
$tokens[$functionNameIndex] = new Token([T_STRING, $newFunctionName]);
}
$docBlockIndex = $this->getDocBlockIndex($tokens, $index);
if ($this->hasDocBlock($tokens, $index)) {
$this->updateDocBlock($tokens, $docBlockIndex);
}
}
}
/**
* @param string $functionName
*
* @return string
*/
private function updateMethodCasing($functionName)
{
if (self::CAMEL_CASE === $this->configuration['case']) {
$newFunctionName = $functionName;
$newFunctionName = ucwords($newFunctionName, '_');
$newFunctionName = str_replace('_', '', $newFunctionName);
$newFunctionName = lcfirst($newFunctionName);
} else {
$newFunctionName = Utils::camelCaseToUnderscore($functionName);
}
return $newFunctionName;
}
/**
* @param Tokens $tokens
* @param int $index
*
* @return bool
*/
private function isTestMethod(Tokens $tokens, $index)
{
// Check if we are dealing with a (non abstract, non lambda) function
if (!$this->isMethod($tokens, $index)) {
return false;
}
// if the function name starts with test it's a test
$functionNameIndex = $tokens->getNextMeaningfulToken($index);
$functionName = $tokens[$functionNameIndex]->getContent();
if ($this->startsWith('test', $functionName)) {
return true;
}
// If the function doesn't have test in its name, and no doc block, it's not a test
if (!$this->hasDocBlock($tokens, $index)) {
return false;
}
$docBlockIndex = $this->getDocBlockIndex($tokens, $index);
$doc = $tokens[$docBlockIndex]->getContent();
if (false === strpos($doc, '@test')) {
return false;
}
return true;
}
/**
* @param Tokens $tokens
* @param int $index
*
* @return bool
*/
private function isMethod(Tokens $tokens, $index)
{
$tokensAnalyzer = new TokensAnalyzer($tokens);
return $tokens[$index]->isGivenKind(T_FUNCTION) && !$tokensAnalyzer->isLambda($index);
}
/**
* @param string $needle
* @param string $haystack
*
* @return bool
*/
private function startsWith($needle, $haystack)
{
return substr($haystack, 0, \strlen($needle)) === $needle;
}
/**
* @param Tokens $tokens
* @param int $index
*
* @return bool
*/
private function hasDocBlock(Tokens $tokens, $index)
{
$docBlockIndex = $this->getDocBlockIndex($tokens, $index);
return $tokens[$docBlockIndex]->isGivenKind(T_DOC_COMMENT);
}
/**
* @param Tokens $tokens
* @param int $index
*
* @return int
*/
private function getDocBlockIndex(Tokens $tokens, $index)
{
do {
$index = $tokens->getPrevNonWhitespace($index);
} while ($tokens[$index]->isGivenKind([T_PUBLIC, T_PROTECTED, T_PRIVATE, T_FINAL, T_ABSTRACT, T_COMMENT]));
return $index;
}
/**
* @param Tokens $tokens
* @param int $docBlockIndex
*/
private function updateDocBlock(Tokens $tokens, $docBlockIndex)
{
$doc = new DocBlock($tokens[$docBlockIndex]->getContent());
$lines = $doc->getLines();
$docBlockNeesUpdate = false;
for ($inc = 0; $inc < \count($lines); ++$inc) {
$lineContent = $lines[$inc]->getContent();
if (false === strpos($lineContent, '@depends')) {
continue;
}
$newLineContent = Preg::replaceCallback('/(@depends\s+)(.+)(\b)/', function (array $matches) {
return sprintf(
'%s%s%s',
$matches[1],
$this->updateMethodCasing($matches[2]),
$matches[3]
);
}, $lineContent);
if ($newLineContent !== $lineContent) {
$lines[$inc] = new Line($newLineContent);
$docBlockNeesUpdate = true;
}
}
if ($docBlockNeesUpdate) {
$lines = implode('', $lines);
$tokens[$docBlockIndex] = new Token([T_DOC_COMMENT, $lines]);
}
}
}