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<?php
/**
* Config class for use in the tests.
*
* The Config class contains a number of static properties.
* As the value of these static properties will be retained between instantiations of the class,
* config values set in one test can influence the results for another test, which makes tests unstable.
*
* This class is a "double" of the Config class which prevents this from happening.
* In _most_ cases, tests should be using this class instead of the "normal" Config,
* with the exception of select tests for the Config class itself.
*
* @author Juliette Reinders Folmer <phpcs_nospam@adviesenzo.nl>
* @copyright 2024 Juliette Reinders Folmer. All rights reserved.
* @license https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
*/
namespace PHP_CodeSniffer\Tests;
use PHP_CodeSniffer\Config;
use ReflectionProperty;
final class ConfigDouble extends Config
{
/**
* Whether or not the setting of a standard should be skipped.
*
* @var boolean
*/
private $skipSettingStandard = false;
/**
* Creates a clean Config object and populates it with command line values.
*
* @param array<string> $cliArgs An array of values gathered from CLI args.
* @param bool $skipSettingStandard Whether to skip setting a standard to prevent
* the Config class trying to auto-discover a ruleset file.
* Should only be set to `true` for tests which actually test
* the ruleset auto-discovery.
* Note: there is no need to set this to `true` when a standard
* is being passed via the `$cliArgs`. Those settings will always
* respected.
* Defaults to `false`. Will result in the standard being set
* to "PSR1" if not provided via `$cliArgs`.
* @param bool $skipSettingReportWidth Whether to skip setting a report-width to prevent
* the Config class trying to auto-discover the screen width.
* Should only be set to `true` for tests which actually test
* the screen width auto-discovery.
* Note: there is no need to set this to `true` when a report-width
* is being passed via the `$cliArgs`. Those settings will always
* respected.
* Defaults to `false`. Will result in the reportWidth being set
* to "80" if not provided via `$cliArgs`.
*
* @return void
*/
public function __construct(array $cliArgs=[], $skipSettingStandard=false, $skipSettingReportWidth=false)
{
$this->skipSettingStandard = $skipSettingStandard;
$this->resetSelectProperties();
$this->preventReadingCodeSnifferConfFile();
parent::__construct($cliArgs);
if ($skipSettingReportWidth !== true) {
$this->preventAutoDiscoveryScreenWidth();
}
}//end __construct()
/**
* Ensures the static properties in the Config class are reset to their default values
* when the ConfigDouble is no longer used.
*
* @return void
*/
public function __destruct()
{
$this->setStaticConfigProperty('overriddenDefaults', []);
$this->setStaticConfigProperty('executablePaths', []);
$this->setStaticConfigProperty('configData', null);
$this->setStaticConfigProperty('configDataFile', null);
}//end __destruct()
/**
* Sets the command line values and optionally prevents a file system search for a custom ruleset.
*
* @param array<string> $args An array of command line arguments to set.
*
* @return void
*/
public function setCommandLineValues($args)
{
parent::setCommandLineValues($args);
if ($this->skipSettingStandard !== true) {
$this->preventSearchingForRuleset();
}
}//end setCommandLineValues()
/**
* Reset a few properties on the Config class to their default values.
*
* @return void
*/
private function resetSelectProperties()
{
$this->setStaticConfigProperty('overriddenDefaults', []);
$this->setStaticConfigProperty('executablePaths', []);
}//end resetSelectProperties()
/**
* Prevent the values in a potentially available user-specific `CodeSniffer.conf` file
* from influencing the tests.
*
* This also prevents some file system calls which can influence the test runtime.
*
* @return void
*/
private function preventReadingCodeSnifferConfFile()
{
$this->setStaticConfigProperty('configData', []);
$this->setStaticConfigProperty('configDataFile', '');
}//end preventReadingCodeSnifferConfFile()
/**
* Prevent searching for a custom ruleset by setting a standard, but only if the test
* being run doesn't set a standard itself.
*
* This also prevents some file system calls which can influence the test runtime.
*
* The standard being set is the smallest one available so the ruleset initialization
* will be the fastest possible.
*
* @return void
*/
private function preventSearchingForRuleset()
{
$overriddenDefaults = $this->getStaticConfigProperty('overriddenDefaults');
if (isset($overriddenDefaults['standards']) === false) {
$this->standards = ['PSR1'];
$overriddenDefaults['standards'] = true;
}
self::setStaticConfigProperty('overriddenDefaults', $overriddenDefaults);
}//end preventSearchingForRuleset()
/**
* Prevent a call to stty to figure out the screen width, but only if the test being run
* doesn't set a report width itself.
*
* @return void
*/
private function preventAutoDiscoveryScreenWidth()
{
$settings = $this->getSettings();
if ($settings['reportWidth'] === 'auto') {
$this->reportWidth = self::DEFAULT_REPORT_WIDTH;
}
}//end preventAutoDiscoveryScreenWidth()
/**
* Helper function to retrieve the value of a private static property on the Config class.
*
* @param string $name The name of the property to retrieve.
*
* @return mixed
*/
private function getStaticConfigProperty($name)
{
$property = new ReflectionProperty('PHP_CodeSniffer\Config', $name);
$property->setAccessible(true);
return $property->getValue();
}//end getStaticConfigProperty()
/**
* Helper function to set the value of a private static property on the Config class.
*
* @param string $name The name of the property to set.
* @param mixed $value The value to set the property to.
*
* @return void
*/
private function setStaticConfigProperty($name, $value)
{
$property = new ReflectionProperty('PHP_CodeSniffer\Config', $name);
$property->setAccessible(true);
$property->setValue(null, $value);
$property->setAccessible(false);
}//end setStaticConfigProperty()
}//end class
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