Issue #3223839: PHP Warning and notices caused by contextual links on nodes

tests/src/Kernel/ContextualLinksAlterTest.php

+<?php
+
+namespace Drupal\Tests\lightning_core\Kernel;
+
+use Drupal\KernelTests\KernelTestBase;
+
+/**
+ * @covers lightning_core_contextual_links_plugins_alter
+ *
+ * @group lightning_core
+ */
+class ContextualLinksAlterTest extends KernelTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $modules = [
+    'block_content',
+    'contextual',
+    'lightning_core',
+    'node',
+    'taxonomy',
+  ];
+
+  /**
+   * Tests that dynamic contextual links are defined correctly.
+   */
+  public function testAlteredContextualLinks(): void {
+    $links = [
+      'block_content.block_edit_latest_version',
+      'entity.taxonomy_term.latest_version_edit_form',
+      'entity.node.latest_version_edit_form',
+    ];
+    foreach ($links as $link_id) {
+      /** @var \Drupal\Core\Menu\ContextualLinkInterface $link */
+      $link = $this->container->get('plugin.manager.menu.contextual_link')
+        ->createInstance($link_id);
+
+      $this->assertNotEmpty($link->getTitle());
+      $this->assertNotEmpty($link->getRouteName());
+      $this->assertNotEmpty($link->getGroup());
+      $this->assertIsArray($link->getOptions());
+      $this->assertIsInt($link->getWeight());
+    }
+  }
+
+}