class LayoutBuilderThemeSuggestionsTest

class LayoutBuilderThemeSuggestionsTest extends BrowserTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'layout_builder',
        'node',
        'layout_builder_theme_suggestions_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'starterkit_theme';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->createContentType([
            'type' => 'bundle_with_section_field',
            'name' => 'Bundle with section field',
        ]);
        LayoutBuilderEntityViewDisplay::load('node.bundle_with_section_field.default')->enableLayoutBuilder()
            ->setOverridable()
            ->save();
        $this->createNode([
            'type' => 'bundle_with_section_field',
            'title' => 'A node title',
            'body' => [
                [
                    'value' => 'This is content that the template should not render',
                ],
            ],
        ]);
        $this->drupalLogin($this->drupalCreateUser([
            'configure any layout',
        ]));
    }
    
    /**
     * Tests alterations of the layout list via preprocess functions.
     */
    public function testLayoutListSuggestion() {
        $page = $this->getSession()
            ->getPage();
        $assert_session = $this->assertSession();
        $this->drupalGet('node/1/layout');
        $page->clickLink('Add section');
        $assert_session->pageTextContains('layout_builder_theme_suggestions_test_preprocess_item_list__layouts');
    }
    
    /**
     * Tests that of view mode specific field templates are suggested.
     */
    public function testFieldBlockViewModeTemplates() {
        $assert_session = $this->assertSession();
        $this->drupalGet('node/1');
        // Confirm that content is displayed by layout builder.
        $assert_session->elementExists('css', '.block-layout-builder');
        // Text that only appears in the view mode specific template.
        $assert_session->pageTextContains('I am a field template for a specific view mode!');
        // The content of the body field should not be visible because it is
        // displayed via a template that does not render it.
        $assert_session->pageTextNotContains('This is content that the template should not render');
    }

}