EntityUpdateTest.php

<?php

namespace Drupal\Tests\editor\Kernel;

use Drupal\KernelTests\Core\Entity\EntityKernelTestBase;
use Drupal\node\Entity\NodeType;
use Drupal\node\Entity\Node;

/**
 * Tests updating an entity.
 *
 * @group editor
 */
class EntityUpdateTest extends EntityKernelTestBase {
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'editor',
        'editor_test',
        'node',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->installSchema('node', [
            'node_access',
        ]);
        $this->installConfig([
            'node',
        ]);
        // Create a node type for testing.
        $type = NodeType::create([
            'type' => 'page',
            'name' => 'page',
        ]);
        $type->save();
        // Set editor_test module weight to be lower than editor module's weight so
        // that editor_test_entity_update() is called before editor_entity_update().
        $extension_config = \Drupal::configFactory()->get('core.extension');
        $editor_module_weight = $extension_config->get('module.editor');
        module_set_weight('editor_test', $editor_module_weight - 1);
    }
    
    /**
     * Tests updating an existing entity.
     *
     * @see editor_test_entity_update()
     */
    public function testEntityUpdate() {
        // Create a node.
        $node = Node::create([
            'type' => 'page',
            'title' => 'test',
        ]);
        $node->save();
        // Update the node.
        // What happens is the following:
        // 1. \Drupal\Core\Entity\EntityStorageBase::doPostSave() gets called.
        // 2. editor_test_entity_update() gets called.
        // 3. A resave of the updated entity gets triggered (second save call).
        // 4. \Drupal\Core\Entity\EntityStorageBase::doPostSave() gets called.
        // 5. editor_test_entity_update() gets called.
        // 6. editor_entity_update() gets called (caused by the second save call).
        // 7. editor_entity_update() gets called (caused by the first save call).
        $node->title->value = 'test updated';
        $node->save();
    }

}