SectionListTraitTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\layout_builder\Kernel;

use Drupal\layout_builder\Section;
use Drupal\layout_builder\SectionListInterface;
use Drupal\layout_builder\SectionListTrait;

/**
 * @coversDefaultClass \Drupal\layout_builder\SectionListTrait
 *
 * @group layout_builder
 * @group #slow
 */
class SectionListTraitTest extends SectionListTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected function getSectionList(array $section_data) {
        return new TestSectionList($section_data);
    }
    
    /**
     * @covers ::addBlankSection
     */
    public function testAddBlankSection() : void {
        $this->expectException(\Exception::class);
        $this->expectExceptionMessage('A blank section must only be added to an empty list');
        $this->sectionList
            ->addBlankSection();
    }

}
class TestSectionList implements SectionListInterface {
    use SectionListTrait {
        addBlankSection as public;
    }
    
    /**
     * An array of sections.
     *
     * @var \Drupal\layout_builder\Section[]
     */
    protected $sections;
    
    /**
     * TestSectionList constructor.
     */
    public function __construct(array $sections) {
        // Loop through each section and reconstruct it to ensure that all default
        // values are present.
        foreach ($sections as $section) {
            $this->sections[] = Section::fromArray($section->toArray());
        }
    }
    
    /**
     * {@inheritdoc}
     */
    protected function setSections(array $sections) {
        $this->sections = array_values($sections);
        return $sections;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getSections() {
        return $this->sections;
    }

}