[DeadCode][PHPUnit] handle crash on RemoveJustPropertyFetchForAssignRector+SimplifyForeachInstanceOfRector (#2453)

* [DeadCode][PHPUnit] handle crash on RemoveJustPropertyFetchForAssignRector+SimplifyForeachInstanceOfRector

* Fixed 🎉

src/Application/ChangedNodeScopeRefresher.php

@@ -12,6 +12,7 @@ use PhpParser\Node\Stmt;
 use PhpParser\Node\Stmt\Expression;
 use PhpParser\Node\Stmt\Property;
 use PHPStan\Analyser\MutatingScope;
+use Rector\Core\Contract\PhpParser\Node\StmtsAwareInterface;
 use Rector\Core\Exception\ShouldNotHappenException;
 use Rector\Core\NodeAnalyzer\ScopeAnalyzer;
 use Rector\Core\NodeAnalyzer\UnreachableStmtAnalyzer;
@@ -69,6 +70,10 @@ final class ChangedNodeScopeRefresher
             $node = new Property(0, [], [], null, [$attributeGroup]);
         }
 
+        if ($node instanceof StmtsAwareInterface && $node->stmts !== null) {
+            $node->stmts = array_values($node->stmts);
+        }
+
         $stmts = $this->resolveStmts($node);
         $this->phpStanNodeScopeResolver->processNodes($stmts, $smartFileInfo, $mutatingScope);
     }

tests/Issues/UndefinedStmtIndex/Fixture/fixture.php.inc

@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Core\Tests\Issues\UndefinedStmtIndex\Fixture;
+
+class Fixture
+{
+    public function fetchIdentities(array $data, array $identities)
+    {
+        $mappedUsers = [];
+        foreach ($identities as $id) {
+            $array = $mappedUsers[$id->user_id]->identities;
+            $array[] = $id;
+            $mappedUsers[$id->user_id]->identities = $array;
+        }
+    }
+}
+
+?>
+-----
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Core\Tests\Issues\UndefinedStmtIndex\Fixture;
+
+class Fixture
+{
+    public function fetchIdentities(array $data, array $identities)
+    {
+        $mappedUsers = [];
+        foreach ($identities as $id) {
+            $mappedUsers[$id->user_id]->identities[] = $id;
+        }
+    }
+}
+
+?>

tests/Issues/UndefinedStmtIndex/UndefinedStmtIndexTest.php

@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Core\Tests\Issues\UndefinedStmtIndex;
+
+use Iterator;
+use Rector\Testing\PHPUnit\AbstractRectorTestCase;
+use Symplify\SmartFileSystem\SmartFileInfo;
+
+final class UndefinedStmtIndexTest extends AbstractRectorTestCase
+{
+    /**
+     * @dataProvider provideData()
+     */
+    public function test(SmartFileInfo $fileInfo): void
+    {
+        $this->doTestFileInfo($fileInfo);
+    }
+
+    /**
+     * @return Iterator<SmartFileInfo>
+     */
+    public function provideData(): Iterator
+    {
+        return $this->yieldFilesFromDirectory(__DIR__ . '/Fixture');
+    }
+
+    public function provideConfigFilePath(): string
+    {
+        return __DIR__ . '/config/configured_rule.php';
+    }
+}

tests/Issues/UndefinedStmtIndex/config/configured_rule.php

@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+use Rector\Config\RectorConfig;
+use Rector\DeadCode\Rector\StmtsAwareInterface\RemoveJustPropertyFetchForAssignRector;
+use Rector\PHPUnit\Rector\Foreach_\SimplifyForeachInstanceOfRector;
+
+return static function (RectorConfig $rectorConfig): void {
+    $rectorConfig->rule(RemoveJustPropertyFetchForAssignRector::class);
+    $rectorConfig->rule(SimplifyForeachInstanceOfRector::class);
+};