class BlockContentRemoveConstraint

class BlockContentRemoveConstraint extends UpdatePathTestBase {
    
    /**
     * Entity definition update manager.
     *
     * @var \Drupal\Core\Entity\EntityDefinitionUpdateManagerInterface
     */
    protected $entityDefinitionUpdateManager;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->entityDefinitionUpdateManager = \Drupal::entityDefinitionUpdateManager();
    }
    
    /**
     * {@inheritdoc}
     */
    protected function setDatabaseDumpFiles() {
        $this->databaseDumpFiles = [
            __DIR__ . '/../../../../../system/tests/fixtures/update/drupal-9.4.0.filled.standard.php.gz',
        ];
    }
    
    /**
     * Tests the upgrade path for moderation state reindexing.
     */
    public function testRunUpdates() {
        $constraint = 'UniqueField';
        $constraints = $this->getFieldInfoConstraints();
        if (!isset($constraints[$constraint])) {
            $constraints[$constraint] = [];
            $field_storage_definition = $this->entityDefinitionUpdateManager
                ->getFieldStorageDefinition('info', 'block_content');
            $field_storage_definition->setConstraints($constraints);
            $this->entityDefinitionUpdateManager
                ->updateFieldStorageDefinition($field_storage_definition);
        }
        $this->assertCount(2, $this->getFieldInfoConstraints());
        $this->runUpdates();
        $this->assertCount(1, $this->getFieldInfoConstraints());
    }
    
    /**
     * Get constraints for info field.
     *
     * @return array[]
     *   List of constraints.
     */
    protected function getFieldInfoConstraints() {
        $field_storage_definition = $this->entityDefinitionUpdateManager
            ->getFieldStorageDefinition('info', 'block_content');
        return $field_storage_definition->getConstraints();
    }

}