class NodeValidationTest

class NodeValidationTest extends EntityKernelTestBase {

  /**
   * Modules to enable.
   *
   * @var array
   */
  protected static $modules = [
    'node',
  ];

  /**
   * Set the default field storage backend for fields created during tests.
   */
  protected function setUp() : void {
    parent::setUp();

    // Create a node type for testing.
    $type = NodeType::create([
      'type' => 'page',
      'name' => 'page',
    ]);
    $type
      ->save();
  }

  /**
   * Tests the node validation constraints.
   */
  public function testValidation() {
    $this
      ->createUser();
    $node = Node::create([
      'type' => 'page',
      'title' => 'test',
      'uid' => 1,
    ]);
    $violations = $node
      ->validate();
    $this
      ->assertCount(0, $violations, 'No violations when validating a default node.');
    $node
      ->set('title', $this
      ->randomString(256));
    $violations = $node
      ->validate();
    $this
      ->assertCount(1, $violations, 'Violation found when title is too long.');
    $this
      ->assertEquals('title.0.value', $violations[0]
      ->getPropertyPath());
    $this
      ->assertEquals('Title: may not be longer than 255 characters.', $violations[0]
      ->getMessage());
    $node
      ->set('title', NULL);
    $violations = $node
      ->validate();
    $this
      ->assertCount(1, $violations, 'Violation found when title is not set.');
    $this
      ->assertEquals('title', $violations[0]
      ->getPropertyPath());
    $this
      ->assertEquals('This value should not be null.', $violations[0]
      ->getMessage());
    $node
      ->set('title', '');
    $violations = $node
      ->validate();
    $this
      ->assertCount(1, $violations, 'Violation found when title is set to an empty string.');
    $this
      ->assertEquals('title', $violations[0]
      ->getPropertyPath());

    // Make the title valid again.
    $node
      ->set('title', $this
      ->randomString());

    // Save the node so that it gets an ID and a changed date.
    $node
      ->save();

    // Set the changed date to something in the far past.
    $node
      ->set('changed', 433918800);
    $violations = $node
      ->validate();
    $this
      ->assertCount(1, $violations, 'Violation found when changed date is before the last changed date.');
    $this
      ->assertEquals('', $violations[0]
      ->getPropertyPath());
    $this
      ->assertEquals('The content has either been modified by another user, or you have already submitted modifications. As a result, your changes cannot be saved.', $violations[0]
      ->getMessage());
  }

}