Initial Drupal 11 with DDEV setup

web/core/tests/Drupal/Tests/StreamCapturer.php

@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\Tests;
+
+// cspell:ignore datalen PSFS_FEED_ME writeable
+
+/**
+ * Captures output to a stream and stores it for retrieval.
+ */
+class StreamCapturer extends \php_user_filter {
+
+  /**
+   * The cache data.
+   *
+   * @var string
+   */
+  public static $cache = '';
+
+  public function filter($in, $out, &$consumed, $closing): int {
+    while ($bucket = stream_bucket_make_writeable($in)) {
+      self::$cache .= $bucket->data;
+      $consumed += $bucket->datalen;
+      stream_bucket_append($out, $bucket);
+    }
+    return PSFS_FEED_ME;
+  }
+
+}