[CodeQuality] Add support for compare $this::class compare with strin…

…g on UseIdenticalOverEqualWithSameTypeRector (#5698)

rules-tests/CodeQuality/Rector/Equal/UseIdenticalOverEqualWithSameTypeRector/Fixture/this_class.php.inc

@@ -0,0 +1,37 @@
+<?php
+
+namespace Rector\Tests\CodeQuality\Rector\Equal\UseIdenticalOverEqualWithSameTypeRector\Fixture;
+
+abstract class ThisClass
+{
+    public function run()
+    {
+        return $this::class == 'SomeClass';
+    }
+
+    public function run2()
+    {
+        return 'SomeClass' == $this::class;
+    }
+}
+
+?>
+-----
+<?php
+
+namespace Rector\Tests\CodeQuality\Rector\Equal\UseIdenticalOverEqualWithSameTypeRector\Fixture;
+
+abstract class ThisClass
+{
+    public function run()
+    {
+        return $this::class === 'SomeClass';
+    }
+
+    public function run2()
+    {
+        return 'SomeClass' === $this::class;
+    }
+}
+
+?>

rules/CodeQuality/Rector/Equal/UseIdenticalOverEqualWithSameTypeRector.php

@@ -77,6 +77,11 @@ public function refactor(Node $node): ?Node
         }
 
         $rightStaticType = $this->nodeTypeResolver->getNativeType($node->right);
+
+        if ($leftStaticType->isString()->yes() && $rightStaticType->isString()->yes()) {
+            return $this->processIdenticalOrNotIdentical($node);
+        }
+
         if ($rightStaticType instanceof MixedType) {
             return null;
         }
@@ -86,6 +91,11 @@ public function refactor(Node $node): ?Node
             return null;
         }
 
+        return $this->processIdenticalOrNotIdentical($node);
+    }
+
+    private function processIdenticalOrNotIdentical(Equal|NotEqual $node): Identical|NotIdentical
+    {
         if ($node instanceof Equal) {
             return new Identical($node->left, $node->right);
         }