Initial Drupal 11 with DDEV setup

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

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\Tests;
+
+/**
+ * Allows test classes to require Drupal modules as dependencies.
+ *
+ * This trait is assumed to be on a subclass of \PHPUnit\Framework\TestCase, and
+ * overrides \PHPUnit\Framework\TestCase::checkRequirements(). This allows the
+ * test to be marked as skipped before any kernel boot processes have happened.
+ */
+trait TestRequirementsTrait {
+
+  /**
+   * Returns the Drupal root directory.
+   *
+   * @return string
+   *   The Drupal root directory.
+   */
+  protected static function getDrupalRoot(): string {
+    return dirname(substr(__DIR__, 0, -strlen(__NAMESPACE__)), 2);
+  }
+
+}