NodeValidationTest.php

<?php

namespace Drupal\Tests\node\Kernel;

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

/**
 * Tests node validation constraints.
 *
 * @group node
 */
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('<em class="placeholder">Title</em>: 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());
    }

}