upgrades core to 8.4.2

core/tests/fixtures/KernelMissingDependentModuleTest.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace Drupal\KernelTests;
+
+/**
+ * A fixture test class with requires annotation.
+ *
+ * This is a fixture class for
+ * \Drupal\KernelTests\KernelTestBaseTest::testRequiresModule().
+ *
+ * This test class should not be discovered by run-tests.sh or phpunit.
+ *
+ * @requires module module_does_not_exist
+ * @group fixture
+ */
+class KernelMissingDependentModuleTest extends KernelTestBase {
+
+  /**
+   * Placeholder test method.
+   *
+   * Depending on configuration, PHPUnit might fail a test if it has no test
+   * methods, so we must provide one. This method should never be executed.
+   */
+  public function testRequiresModule() {
+    $this->fail('Running test with missing required module.');
+  }
+
+  /**
+   * Public access for checkRequirements() to avoid reflection.
+   */
+  public function publicCheckRequirements() {
+    return parent::checkRequirements();
+  }
+
+}