TourTestBase.php

<?php

namespace Drupal\Tests\tour\Functional;

use Drupal\Component\Render\FormattableMarkup;
use Drupal\Tests\BrowserTestBase;

/**
 * Base class for testing Tour functionality.
 */
abstract class TourTestBase extends BrowserTestBase {
    
    /**
     * Assert function to determine if tips rendered to the page
     * have a corresponding page element.
     *
     * @code
     * // Basic example.
     * $this->assertTourTips();
     *
     * // Advanced example. The following would be used for multipage or
     * // targeting a specific subset of tips.
     * $tips = array();
     * $tips[] = array('data-id' => 'foo');
     * $tips[] = array('data-id' => 'bar');
     * $tips[] = array('data-class' => 'baz');
     * $this->assertTourTips($tips);
     * @endcode
     *
     * @param array $tips
     *   A list of tips which provide either a "data-id" or "data-class".
     */
    public function assertTourTips($tips = []) {
        // Get the rendered tips and their data-id and data-class attributes.
        if (empty($tips)) {
            // Tips are rendered as <li> elements inside <ol id="tour">.
            $rendered_tips = $this->xpath('//ol[@id = "tour"]//li[starts-with(@class, "tip")]');
            foreach ($rendered_tips as $rendered_tip) {
                $tips[] = [
                    'data-id' => $rendered_tip->getAttribute('data-id'),
                    'data-class' => $rendered_tip->getAttribute('data-class'),
                ];
            }
        }
        // If the tips are still empty we need to fail.
        if (empty($tips)) {
            $this->fail('Could not find tour tips on the current page.');
        }
        else {
            // Check for corresponding page elements.
            $total = 0;
            $modals = 0;
            foreach ($tips as $tip) {
                if (!empty($tip['data-id'])) {
                    $elements = $this->getSession()
                        ->getPage()
                        ->findAll('css', '#' . $tip['data-id']);
                    $this->assertCount(1, $elements, new FormattableMarkup('Found corresponding page element for tour tip with id #%data-id', [
                        '%data-id' => $tip['data-id'],
                    ]));
                }
                elseif (!empty($tip['data-class'])) {
                    $elements = $this->getSession()
                        ->getPage()
                        ->findAll('css', '.' . $tip['data-class']);
                    $this->assertFalse(empty($elements), new FormattableMarkup('Found corresponding page element for tour tip with class .%data-class', [
                        '%data-class' => $tip['data-class'],
                    ]));
                }
                else {
                    // It's a modal.
                    $modals++;
                }
                $total++;
            }
        }
    }

}