ext/standard: Add Directory test with messed up internal state

Author: Girgias

ext/standard/tests/directory/DirectoryClass_readonly_handle_by_pass_via_ArrayObject.phpt

@@ -0,0 +1,34 @@
+--TEST--
+Changing Directory::$handle property
+--FILE--
+<?php
+
+$d = dir(__DIR__);
+$ao = new ArrayObject($d);
+
+try {
+    $ao['handle'] = STDERR;
+} catch (\Throwable $e) {
+    echo $e::class, ': ', $e->getMessage(), PHP_EOL;
+}
+var_dump($d->handle);
+
+try {
+    $s = $d->read();
+    var_dump($s);
+} catch (\Throwable $e) {
+    echo $e::class, ': ', $e->getMessage(), PHP_EOL;
+}
+
+try {
+    unset($ao['handle']);
+    var_dump($d->handle);
+} catch (\Throwable $e) {
+    echo $e::class, ': ', $e->getMessage(), PHP_EOL;
+}
+
+?>
+--EXPECT--
+resource(3) of type (stream)
+TypeError: Directory::read(): Argument #1 must be a valid Directory resource
+Error: Typed property Directory::$handle must not be accessed before initialization