diff --git a/packages/DeadCode/src/Rector/Concat/RemoveConcatAutocastRector.php b/packages/DeadCode/src/Rector/Concat/RemoveConcatAutocastRector.php
index b977b363bad..f0ce3085756 100644
--- a/packages/DeadCode/src/Rector/Concat/RemoveConcatAutocastRector.php
+++ b/packages/DeadCode/src/Rector/Concat/RemoveConcatAutocastRector.php
@@ -3,7 +3,9 @@
 namespace Rector\DeadCode\Rector\Concat;
 
 use PhpParser\Node;
+use PhpParser\Node\Expr;
 use PhpParser\Node\Expr\BinaryOp\Concat;
+use PhpParser\Node\Expr\Cast\String_;
 use Rector\Rector\AbstractRector;
 use Rector\RectorDefinition\CodeSample;
 use Rector\RectorDefinition\RectorDefinition;
@@ -56,8 +58,8 @@ CODE_SAMPLE
         return $node;
     }
 
-    private function removeStringCast(Node\Expr $expr): Node
+    private function removeStringCast(Expr $expr): Expr
     {
-        return $expr instanceof Node\Expr\Cast\String_ ? $expr->expr : $expr;
+        return $expr instanceof String_ ? $expr->expr : $expr;
     }
 }
diff --git a/packages/NodeTypeResolver/src/NodeTypeResolver.php b/packages/NodeTypeResolver/src/NodeTypeResolver.php
index 88c5d75fff5..cb37f72cbb0 100644
--- a/packages/NodeTypeResolver/src/NodeTypeResolver.php
+++ b/packages/NodeTypeResolver/src/NodeTypeResolver.php
@@ -35,7 +35,6 @@ use PHPStan\Type\ObjectType;
 use PHPStan\Type\StringType;
 use PHPStan\Type\Type;
 use PHPStan\Type\UnionType;
-use Rector\Exception\ShouldNotHappenException;
 use Rector\NodeTypeResolver\Contract\NodeTypeResolverAwareInterface;
 use Rector\NodeTypeResolver\Contract\PerNodeTypeResolver\PerNodeTypeResolverInterface;
 use Rector\NodeTypeResolver\Node\AttributeKey;
@@ -378,7 +377,8 @@ final class NodeTypeResolver
     {
         $classNode = $node->getAttribute(AttributeKey::CLASS_NODE);
         if ($classNode === null) {
-            throw new ShouldNotHappenException();
+            // anonymous class
+            return [];
         }
 
         return $this->resolve($classNode);
diff --git a/tests/Rector/ClassMethod/AddMethodParentCallRector/AddMethodParentCallRectorTest.php b/tests/Rector/ClassMethod/AddMethodParentCallRector/AddMethodParentCallRectorTest.php
index 6ffd28e7cad..041626a26f6 100644
--- a/tests/Rector/ClassMethod/AddMethodParentCallRector/AddMethodParentCallRectorTest.php
+++ b/tests/Rector/ClassMethod/AddMethodParentCallRector/AddMethodParentCallRectorTest.php
@@ -10,10 +10,7 @@ final class AddMethodParentCallRectorTest extends AbstractRectorTestCase
 {
     public function test(): void
     {
-        $this->doTestFiles([
-            __DIR__ . '/Fixture/fixture.php.inc',
-            __DIR__ . '/Fixture/skip_already_has.php.inc',
-        ]);
+        $this->doTestFiles([__DIR__ . '/Fixture/fixture.php.inc', __DIR__ . '/Fixture/skip_already_has.php.inc']);
     }
 
     /**
diff --git a/tests/Rector/MethodCall/RenameMethodRector/Fixture/under_anonymous_class.php.inc b/tests/Rector/MethodCall/RenameMethodRector/Fixture/under_anonymous_class.php.inc
new file mode 100644
index 00000000000..470e40d326b
--- /dev/null
+++ b/tests/Rector/MethodCall/RenameMethodRector/Fixture/under_anonymous_class.php.inc
@@ -0,0 +1,25 @@
+<?php
+
+namespace Rector\Tests\Rector\MethodCall\RenameMethodRector\Fixture;
+
+class UnderAnonymousClass
+{
+    public function testErrorHandler(): void
+    {
+        $this->expectException(\ErrorException::class);
+
+        $class = new class {
+            public function triggerError(): void
+            {
+                $this->startErrorHandling();
+                trigger_error('an error has occurred');
+                $this->stopErrorHandling();
+            }
+        };
+
+        $class->triggerError();
+    }
+}
+
+?>
+
diff --git a/tests/Rector/MethodCall/RenameMethodRector/RenameMethodRectorTest.php b/tests/Rector/MethodCall/RenameMethodRector/RenameMethodRectorTest.php
index 8201854bd84..6817363e307 100644
--- a/tests/Rector/MethodCall/RenameMethodRector/RenameMethodRectorTest.php
+++ b/tests/Rector/MethodCall/RenameMethodRector/RenameMethodRectorTest.php
@@ -19,6 +19,7 @@ final class RenameMethodRectorTest extends AbstractRectorTestCase
             __DIR__ . '/Fixture/fixture4.php.inc',
             __DIR__ . '/Fixture/fixture5.php.inc',
             __DIR__ . '/Fixture/fixture6.php.inc',
+            __DIR__ . '/Fixture/under_anonymous_class.php.inc',
             __DIR__ . '/Fixture/SomeClass.php',
             __DIR__ . '/Fixture/nette_to_symfony_presenter.php.inc',
         ]);
@@ -48,6 +49,10 @@ final class RenameMethodRectorTest extends AbstractRectorTestCase
                     '*Presenter' => [
                         'run' => '__invoke',
                     ],
+                    'PHPUnit\Framework\TestClass' => [
+                        'setExpectedException' => 'expectedException',
+                        'setExpectedExceptionRegExp' => 'expectedException',
+                    ],
                 ],
             ],
         ];