Add MagicMethodCasingFixer to check correct magic method casing

ecs.php

@@ -50,6 +50,7 @@
 use PhpCsFixer\Fixer\Basic\PsrAutoloadingFixer;
 use PhpCsFixer\Fixer\Basic\SingleLineEmptyBodyFixer;
 use PhpCsFixer\Fixer\Casing\ClassReferenceNameCasingFixer;
+use PhpCsFixer\Fixer\Casing\MagicConstantCasingFixer;
 use PhpCsFixer\Fixer\Casing\MagicMethodCasingFixer;
 use PhpCsFixer\Fixer\Casing\NativeFunctionCasingFixer;
 use PhpCsFixer\Fixer\Casing\NativeTypeDeclarationCasingFixer;
@@ -258,6 +259,8 @@
             PsrAutoloadingFixer::class,
             // When referencing an internal class it must be written using the correct casing.
             ClassReferenceNameCasingFixer::class,
+            // Magic constants should be referred to using the correct casing.
+            MagicConstantCasingFixer::class,
             // Magic method definitions and calls must be using the correct casing
             MagicMethodCasingFixer::class,
             // Function defined by PHP should be called using the correct casing

tests/Integration/Fixtures/Basic.correct.php.inc

@@ -15,6 +15,12 @@ class Basic extends AbstractBasic implements InterfaceFromThisNamespace // Fully
 
     protected int $myProperty = 666; // OrderedClassElementsFixer
 
+    // MagicMethodCasingFixer, OrderedClassElementsFixer
+    public function __toString(): string
+    {
+        return '';
+    }
+
     public function isEqual($a, ?string $b): ?bool // VisibilityRequiredFixer, CompactNullableTypeDeclarationFixer
     {
         // TrimArraySpacesFixer
@@ -44,6 +50,8 @@ class Basic extends AbstractBasic implements InterfaceFromThisNamespace // Fully
 
     public function fooBar(mixed $foo): mixed // FunctionDeclarationFixer
     {
+        // MagicConstantCasingFixer
+        $magicConstant = __DIR__;
         $value = 5;
         // FunctionDeclarationFixer
         $function = function ($foo) use ($value) {

tests/Integration/Fixtures/Basic.wrong.php.inc

@@ -36,6 +36,8 @@ class Basic extends \Some\Other\Namespace\AbstractBasic implements \Lmc\CodingSt
 
     public function fooBar ( mixed    $foo ): mixed // FunctionDeclarationFixer
     {
+        // MagicConstantCasingFixer
+        $magicConstant = __dir__;
         $value = 5;
         // FunctionDeclarationFixer
         $function = function($foo)use($value) {
@@ -158,4 +160,10 @@ but should be heredoc instead';
         // NullableTypeDeclarationForDefaultNullValueFixer
         string $anotherNullableValue = null,
     ): void {}
+
+    // MagicMethodCasingFixer, OrderedClassElementsFixer
+    public function __ToString(): string
+    {
+        return '';
+    }
 }