class NodeSaveTest

class NodeSaveTest extends NodeTestBase {
    
    /**
     * A normal logged in user.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $webUser;
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'node_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        // Create a user that is allowed to post; we'll use this to test the submission.
        $web_user = $this->drupalCreateUser([
            'create article content',
        ]);
        $this->drupalLogin($web_user);
        $this->webUser = $web_user;
    }
    
    /**
     * Checks whether custom node IDs are saved properly during an import operation.
     *
     * Workflow:
     *  - first create a piece of content
     *  - save the content
     *  - check if node exists
     */
    public function testImport() {
        // Node ID must be a number that is not in the database.
        $nids = \Drupal::entityTypeManager()->getStorage('node')
            ->getQuery()
            ->accessCheck(FALSE)
            ->sort('nid', 'DESC')
            ->range(0, 1)
            ->execute();
        $max_nid = reset($nids);
        $test_nid = $max_nid + mt_rand(1000, 1000000);
        $title = $this->randomMachineName(8);
        $node = [
            'title' => $title,
            'body' => [
                [
                    'value' => $this->randomMachineName(32),
                ],
            ],
            'uid' => $this->webUser
                ->id(),
            'type' => 'article',
            'nid' => $test_nid,
        ];
        
        /** @var \Drupal\node\NodeInterface $node */
        $node = Node::create($node);
        $node->enforceIsNew();
        $this->assertEquals($this->webUser
            ->id(), $node->getOwnerId());
        $node->save();
        // Test the import.
        $node_by_nid = Node::load($test_nid);
        $this->assertNotEmpty($node_by_nid, 'Node load by node ID.');
        $node_by_title = $this->drupalGetNodeByTitle($title);
        $this->assertNotEmpty($node_by_title, 'Node load by node title.');
    }
    
    /**
     * Verifies accuracy of the "created" and "changed" timestamp functionality.
     */
    public function testTimestamps() {
        // Use the default timestamps.
        $edit = [
            'uid' => $this->webUser
                ->id(),
            'type' => 'article',
            'title' => $this->randomMachineName(8),
        ];
        Node::create($edit)->save();
        $node = $this->drupalGetNodeByTitle($edit['title']);
        $this->assertEquals(REQUEST_TIME, $node->getCreatedTime(), 'Creating a node sets default "created" timestamp.');
        $this->assertEquals(REQUEST_TIME, $node->getChangedTime(), 'Creating a node sets default "changed" timestamp.');
        // Store the timestamps.
        $created = $node->getCreatedTime();
        $node->save();
        $node = $this->drupalGetNodeByTitle($edit['title'], TRUE);
        $this->assertEquals($created, $node->getCreatedTime(), 'Updating a node preserves "created" timestamp.');
        // Programmatically set the timestamps using hook_ENTITY_TYPE_presave().
        $node->title = 'testing_node_presave';
        $node->save();
        $node = $this->drupalGetNodeByTitle('testing_node_presave', TRUE);
        $this->assertEquals(280299600, $node->getCreatedTime(), 'Saving a node uses "created" timestamp set in presave hook.');
        $this->assertEquals(979534800, $node->getChangedTime(), 'Saving a node uses "changed" timestamp set in presave hook.');
        // Programmatically set the timestamps on the node.
        $edit = [
            'uid' => $this->webUser
                ->id(),
            'type' => 'article',
            'title' => $this->randomMachineName(8),
            // Sun, 19 Nov 1978 05:00:00 GMT.
'created' => 280299600,
            // Drupal 1.0 release.
'changed' => 979534800,
        ];
        Node::create($edit)->save();
        $node = $this->drupalGetNodeByTitle($edit['title']);
        $this->assertEquals(280299600, $node->getCreatedTime(), 'Creating a node programmatically uses programmatically set "created" timestamp.');
        $this->assertEquals(979534800, $node->getChangedTime(), 'Creating a node programmatically uses programmatically set "changed" timestamp.');
        // Update the timestamps.
        $node->setCreatedTime(979534800);
        $node->changed = 280299600;
        $node->save();
        $node = $this->drupalGetNodeByTitle($edit['title'], TRUE);
        $this->assertEquals(979534800, $node->getCreatedTime(), 'Updating a node uses user-set "created" timestamp.');
        // Allowing setting changed timestamps is required, see
        // Drupal\content_translation\ContentTranslationMetadataWrapper::setChangedTime($timestamp)
        // for example.
        $this->assertEquals(280299600, $node->getChangedTime(), 'Updating a node uses user-set "changed" timestamp.');
    }
    
    /**
     * Tests node presave and static node load cache.
     *
     * This test determines changes in hook_ENTITY_TYPE_presave() and verifies
     * that the static node load cache is cleared upon save.
     */
    public function testDeterminingChanges() {
        // Initial creation.
        $node = Node::create([
            'uid' => $this->webUser
                ->id(),
            'type' => 'article',
            'title' => 'test_changes',
        ]);
        $node->save();
        // Update the node without applying changes.
        $node->save();
        $this->assertEquals('test_changes', $node->label(), 'No changes have been determined.');
        // Apply changes.
        $node->title = 'updated';
        $node->save();
        // The hook implementations node_test_node_presave() and
        // node_test_node_update() determine changes and change the title.
        $this->assertEquals('updated_presave_update', $node->label(), 'Changes have been determined.');
        // Test the static node load cache to be cleared.
        $node = Node::load($node->id());
        $this->assertEquals('updated_presave', $node->label(), 'Static cache has been cleared.');
    }
    
    /**
     * Tests saving a node on node insert.
     *
     * This test ensures that a node has been fully saved when
     * hook_ENTITY_TYPE_insert() is invoked, so that the node can be saved again
     * in a hook implementation without errors.
     *
     * @see node_test_node_insert()
     */
    public function testNodeSaveOnInsert() {
        // node_test_node_insert() triggers a save on insert if the title equals
        // 'new'.
        $node = $this->drupalCreateNode([
            'title' => 'new',
        ]);
        $this->assertEquals('Node ' . $node->id(), $node->getTitle(), 'Node saved on node insert.');
    }

}