Ruleset::registerSniffs(): add tests

tests/Core/Ruleset/RegisterSniffsTest.php

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+<?php
+/**
+ * Test the Ruleset::registerSniffs() method.
+ *
+ * @author    Juliette Reinders Folmer <[email protected]>
+ * @copyright 2024 PHPCSStandards and contributors
+ * @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
+ */
+
+namespace PHP_CodeSniffer\Tests\Core\Ruleset;
+
+use PHP_CodeSniffer\Ruleset;
+use PHP_CodeSniffer\Tests\ConfigDouble;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * Test the Ruleset::registerSniffs() method.
+ *
+ * @covers \PHP_CodeSniffer\Ruleset::registerSniffs
+ */
+final class RegisterSniffsTest extends TestCase
+{
+
+    /**
+     * The Ruleset object.
+     *
+     * @var \PHP_CodeSniffer\Ruleset
+     */
+    private static $ruleset;
+
+    /**
+     * Original value of the $sniffs property on the Ruleset.
+     *
+     * @var array<string, \PHP_CodeSniffer\Sniffs\Sniff>
+     */
+    private static $originalSniffs = [];
+
+    /**
+     * List of Standards dir relative sniff files loaded for the PSR1 standard.
+     *
+     * @var array<string>
+     */
+    private static $psr1SniffFiles = [
+        'Generic/Sniffs/Files/ByteOrderMarkSniff.php',
+        'Generic/Sniffs/NamingConventions/UpperCaseConstantNameSniff.php',
+        'Generic/Sniffs/PHP/DisallowAlternativePHPTagsSniff.php',
+        'Generic/Sniffs/PHP/DisallowShortOpenTagSniff.php',
+        'PSR1/Sniffs/Classes/ClassDeclarationSniff.php',
+        'PSR1/Sniffs/Files/SideEffectsSniff.php',
+        'PSR1/Sniffs/Methods/CamelCapsMethodNameSniff.php',
+        'Squiz/Sniffs/Classes/ValidClassNameSniff.php',
+    ];
+
+    /**
+     * Absolute paths to the sniff files loaded for the PSR1 standard.
+     *
+     * @var array<string>
+     */
+    private static $psr1SniffAbsolutePaths = [];
+
+
+    /**
+     * Initialize the config and ruleset objects which will be used for some of these tests.
+     *
+     * @beforeClass
+     *
+     * @return void
+     */
+    public static function initializeConfigAndRuleset()
+    {
+        // Set up the ruleset.
+        $config        = new ConfigDouble(['--standard=PSR1']);
+        self::$ruleset = new Ruleset($config);
+
+        // Remember the original value of the Ruleset::$sniff property as the tests adjust it.
+        self::$originalSniffs = self::$ruleset->sniffs;
+
+        // Sort the value to make the tests stable as different OSes will read directories
+        // in a different order and the order is not relevant for these tests. Just the values.
+        ksort(self::$originalSniffs);
+
+        // Update the sniff file list.
+        $standardsDir  = dirname(dirname(dirname(__DIR__))).DIRECTORY_SEPARATOR;
+        $standardsDir .= 'src'.DIRECTORY_SEPARATOR.'Standards'.DIRECTORY_SEPARATOR;
+
+        self::$psr1SniffAbsolutePaths = self::relativeToAbsoluteSniffFiles($standardsDir, self::$psr1SniffFiles);
+
+    }//end initializeConfigAndRuleset()
+
+
+    /**
+     * Convert relative paths to absolute paths and ensure the paths use the correct OS-specific directory separator.
+     *
+     * @param string        $baseDir       Directory to which these paths are relative to. Including trailing slash.
+     * @param array<string> $relativePaths Relative paths.
+     *
+     * @return array<string>
+     */
+    public static function relativeToAbsoluteSniffFiles($baseDir, $relativePaths)
+    {
+        $fileList = [];
+        foreach ($relativePaths as $sniffName) {
+            $sniffFile  = str_replace('/', DIRECTORY_SEPARATOR, $sniffName);
+            $sniffFile  = $baseDir.$sniffFile;
+            $fileList[] = $sniffFile;
+        }
+
+        return $fileList;
+
+    }//end relativeToAbsoluteSniffFiles()
+
+
+    /**
+     * Clear out the Ruleset::$sniffs property.
+     *
+     * @before
+     *
+     * @return void
+     */
+    protected function clearOutSniffs()
+    {
+        // Clear out the Ruleset::$sniffs property.
+        self::$ruleset->sniffs = [];
+
+    }//end clearOutSniffs()
+
+
+    /**
+     * Test that registering sniffs works as expected (simple base test case).
+     *
+     * @return void
+     */
+    public function testRegisteredSniffsShouldBeTheSame()
+    {
+        self::$ruleset->registerSniffs(self::$psr1SniffAbsolutePaths, [], []);
+
+        // Make sure the same sniff list was recreated (but without the objects having been created yet).
+        $this->assertSame(array_keys(self::$originalSniffs), array_keys(self::$ruleset->sniffs));
+        $this->assertSame(array_keys(self::$originalSniffs), array_values(self::$ruleset->sniffs));
+
+    }//end testRegisteredSniffsShouldBeTheSame()
+
+
+    /**
+     * Test that if only specific sniffs are requested, only those are registered.
+     *
+     * {@internal Can't test this via the CLI arguments due to some code in the Ruleset class
+     * related to sniff tests.}
+     *
+     * @return void
+     */
+    public function testRegisteredSniffsWithRestrictions()
+    {
+        $restrictions = [
+            'psr1\\sniffs\\classes\\classdeclarationsniff'    => true,
+            'psr1\\sniffs\\files\\sideeffectssniff'           => true,
+            'psr1\\sniffs\\methods\\camelcapsmethodnamesniff' => true,
+        ];
+
+        $expected = [
+            'PHP_CodeSniffer\\Standards\\PSR1\\Sniffs\\Classes\\ClassDeclarationSniff',
+            'PHP_CodeSniffer\\Standards\\PSR1\\Sniffs\\Files\\SideEffectsSniff',
+            'PHP_CodeSniffer\\Standards\\PSR1\\Sniffs\\Methods\\CamelCapsMethodNameSniff',
+        ];
+
+        self::$ruleset->registerSniffs(self::$psr1SniffAbsolutePaths, $restrictions, []);
+
+        $this->assertSame($expected, array_keys(self::$ruleset->sniffs));
+
+    }//end testRegisteredSniffsWithRestrictions()
+
+
+    /**
+     * Test that sniffs excluded via the CLI are not registered.
+     *
+     * @return void
+     */
+    public function testRegisteredSniffsWithExclusions()
+    {
+        // Set up the ruleset.
+        $args    = [
+            '--standard=PSR1',
+            '--exclude=PSR1.Classes.ClassDeclaration,PSR1.Files.SideEffects,PSR1.Methods.CamelCapsMethodName',
+        ];
+        $config  = new ConfigDouble($args);
+        $ruleset = new Ruleset($config);
+
+        $expected = [
+            'PHP_CodeSniffer\\Standards\\Generic\\Sniffs\\Files\\ByteOrderMarkSniff',
+            'PHP_CodeSniffer\\Standards\\Generic\\Sniffs\\NamingConventions\\UpperCaseConstantNameSniff',
+            'PHP_CodeSniffer\\Standards\\Generic\\Sniffs\\PHP\\DisallowAlternativePHPTagsSniff',
+            'PHP_CodeSniffer\\Standards\\Generic\\Sniffs\\PHP\\DisallowShortOpenTagSniff',
+            'PHP_CodeSniffer\\Standards\\Squiz\\Sniffs\\Classes\\ValidClassNameSniff',
+        ];
+
+        $actual = array_keys($ruleset->sniffs);
+        sort($actual);
+
+        $this->assertSame($expected, $actual);
+
+    }//end testRegisteredSniffsWithExclusions()
+
+
+    /**
+     * Test combining requesting specific sniffs and excluding a subset of those.
+     *
+     * @return void
+     */
+    public function testRegisteredSniffsBothRestrictionsAndExclusions()
+    {
+        $restrictions = [
+            'generic\\sniffs\\namingconventions\\uppercaseconstantnamesniff' => true,
+            'generic\\sniffs\\php\\disallowalternativephptagssniff'          => true,
+            'generic\\sniffs\\php\\disallowshortopentagsniff'                => true,
+            'psr1\\sniffs\\classes\\classdeclarationsniff'                   => true,
+            'squiz\\sniffs\\classes\\validclassnamesniff'                    => true,
+        ];
+
+        $exclusions = [
+            'squiz\\sniffs\\classes\\validclassnamesniff'                    => true,
+            'generic\\sniffs\\php\\disallowalternativephptagssniff'          => true,
+            'generic\\sniffs\\namingconventions\\uppercaseconstantnamesniff' => true,
+        ];
+
+        $expected = [
+            'PHP_CodeSniffer\\Standards\\Generic\\Sniffs\\PHP\\DisallowShortOpenTagSniff',
+            'PHP_CodeSniffer\\Standards\\PSR1\\Sniffs\\Classes\\ClassDeclarationSniff',
+        ];
+
+        self::$ruleset->registerSniffs(self::$psr1SniffAbsolutePaths, $restrictions, $exclusions);
+
+        $this->assertEquals($expected, array_keys(self::$ruleset->sniffs));
+
+    }//end testRegisteredSniffsBothRestrictionsAndExclusions()
+
+
+    /**
+     * Verify that abstract sniffs are filtered out and not registered.
+     *
+     * @return void
+     */
+    public function testRegisterSniffsFiltersOutAbstractClasses()
+    {
+        $extraPathsBaseDir = __DIR__.DIRECTORY_SEPARATOR.'Fixtures'.DIRECTORY_SEPARATOR;
+        $extraPaths        = [
+            'DirectoryExpansion/.hiddenAbove/src/MyStandard/Sniffs/AbstractSniff.php',
+            'DirectoryExpansion/.hiddenAbove/src/MyStandard/Sniffs/CategoryB/AnotherAbstractSniff.php',
+        ];
+        $extraPaths        = self::relativeToAbsoluteSniffFiles($extraPathsBaseDir, $extraPaths);
+
+        $fileList = self::$psr1SniffAbsolutePaths;
+        foreach ($extraPaths as $path) {
+            $fileList[] = $path;
+        }
+
+        self::$ruleset->registerSniffs($fileList, [], []);
+
+        // Make sure the same sniff list was recreated (but without the objects having been created yet).
+        $this->assertSame(array_keys(self::$originalSniffs), array_keys(self::$ruleset->sniffs));
+        $this->assertSame(array_keys(self::$originalSniffs), array_values(self::$ruleset->sniffs));
+
+    }//end testRegisterSniffsFiltersOutAbstractClasses()
+
+
+    /**
+     * Test that sniff files not in a "/Sniffs/" directory are filtered out and not registered.
+     *
+     * @return void
+     */
+    public function testRegisteredSniffsFiltersOutFilePathsWithoutSniffsDir()
+    {
+        $extraPathsBaseDir = __DIR__.DIRECTORY_SEPARATOR.'Fixtures'.DIRECTORY_SEPARATOR;
+        $extraPaths        = [
+            'DirectoryExpansion/.hiddenAbove/src/MyStandard/Utils/NotInSniffsDirSniff.php',
+            'DirectoryExpansion/.hiddenAbove/src/MyStandard/Utils/SubDir/NotInSniffsDirSniff.php',
+        ];
+        $extraPaths        = self::relativeToAbsoluteSniffFiles($extraPathsBaseDir, $extraPaths);
+
+        $fileList = self::$psr1SniffAbsolutePaths;
+        foreach ($extraPaths as $path) {
+            $fileList[] = $path;
+        }
+
+        self::$ruleset->registerSniffs($fileList, [], []);
+
+        // Make sure the same sniff list was recreated (but without the objects having been created yet).
+        $this->assertSame(array_keys(self::$originalSniffs), array_keys(self::$ruleset->sniffs));
+        $this->assertSame(array_keys(self::$originalSniffs), array_values(self::$ruleset->sniffs));
+
+    }//end testRegisteredSniffsFiltersOutFilePathsWithoutSniffsDir()
+
+
+}//end class