class BlockContentTestBase

abstract class BlockContentTestBase extends BrowserTestBase {
    
    /**
     * Profile to use.
     *
     * @var string
     */
    protected $profile = 'testing';
    
    /**
     * Admin user.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $adminUser;
    
    /**
     * Permissions to grant admin user.
     *
     * @var array
     */
    protected $permissions = [
        'administer blocks',
        'access block library',
        'administer block types',
        'administer block content',
    ];
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'block',
        'block_content',
    ];
    
    /**
     * Whether or not to auto-create the basic block type during setup.
     *
     * @var bool
     */
    protected $autoCreateBasicBlockType = TRUE;
    
    /**
     * Sets the test up.
     */
    protected function setUp() : void {
        parent::setUp();
        if ($this->autoCreateBasicBlockType) {
            $this->createBlockContentType('basic', TRUE);
        }
        $this->adminUser = $this->drupalCreateUser($this->permissions);
        $this->drupalPlaceBlock('local_actions_block');
    }
    
    /**
     * Creates a content block.
     *
     * @param bool|string $title
     *   (optional) Title of block. When no value is given uses a random name.
     *   Defaults to FALSE.
     * @param string $bundle
     *   (optional) Bundle name. Defaults to 'basic'.
     * @param bool $save
     *   (optional) Whether to save the block. Defaults to TRUE.
     *
     * @return \Drupal\block_content\Entity\BlockContent
     *   Created content block.
     */
    protected function createBlockContent($title = FALSE, $bundle = 'basic', $save = TRUE) {
        $title = $title ?: $this->randomMachineName();
        $block_content = BlockContent::create([
            'info' => $title,
            'type' => $bundle,
            'langcode' => 'en',
        ]);
        if ($block_content && $save === TRUE) {
            $block_content->save();
        }
        return $block_content;
    }
    
    /**
     * Creates a block type (bundle).
     *
     * @param array|string $values
     *   The value to create the block content type. If $values is an array
     *   it should be like: ['id' => 'foo', 'label' => 'Foo']. If $values
     *   is a string, it will be considered that it represents the label.
     * @param bool $create_body
     *   Whether or not to create the body field
     *
     * @return \Drupal\block_content\Entity\BlockContentType
     *   Created block type.
     */
    protected function createBlockContentType($values, $create_body = FALSE) {
        if (is_array($values)) {
            if (!isset($values['id'])) {
                do {
                    $id = $this->randomMachineName(8);
                } while (BlockContentType::load($id));
            }
            else {
                $id = $values['id'];
            }
            $values += [
                'id' => $id,
                'label' => $id,
                'revision' => FALSE,
            ];
            $bundle = BlockContentType::create($values);
        }
        else {
            $bundle = BlockContentType::create([
                'id' => $values,
                'label' => $values,
                'revision' => FALSE,
            ]);
        }
        $bundle->save();
        if ($create_body) {
            block_content_add_body_field($bundle->id());
        }
        return $bundle;
    }

}