PagerTest.php

<?php

namespace Drupal\Tests\views\Functional\Wizard;


/**
 * Tests the ability of the views wizard to create views without a pager.
 *
 * @group views
 */
class PagerTest extends WizardTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Tests the pager option.
     */
    public function testPager() {
        // Create nodes, each with a different creation time so that we have
        // conditions that are meaningful for the use of a pager.
        $this->drupalCreateContentType([
            'type' => 'page',
        ]);
        for ($i = 0; $i < 12; $i++) {
            $this->drupalCreateNode([
                'created' => REQUEST_TIME - $i,
            ]);
        }
        // Make a View that uses a pager.
        $path_with_pager = 'test-view-with-pager';
        $this->createViewAtPath($path_with_pager, TRUE);
        $this->drupalGet($path_with_pager);
        // This technique for finding the existence of a pager
        // matches that used in Drupal\views_ui\Tests\PreviewTest.php.
        $this->assertSession()
            ->elementExists('xpath', '//ul[contains(@class, "pager__items")]/li');
        // Make a View that does not have a pager.
        $path_with_no_pager = 'test-view-without-pager';
        $this->createViewAtPath($path_with_no_pager, FALSE);
        $this->drupalGet($path_with_no_pager);
        $this->assertSession()
            ->elementNotExists('xpath', '//ul[contains(@class, "pager__items")]/li');
    }
    
    /**
     * Create a simple View of nodes at a given path.
     *
     * @param string $path
     *   The path at which the View should be created.
     * @param bool $pager
     *   A boolean for whether the View created should use a pager.
     */
    protected function createViewAtPath($path, $pager = TRUE) {
        $view = [];
        $view['label'] = $this->randomMachineName(16);
        $view['id'] = strtolower($this->randomMachineName(16));
        $view['show[sort]'] = 'node_field_data-created:ASC';
        $view['page[create]'] = 1;
        $view['page[title]'] = $this->randomMachineName(16);
        $view['page[path]'] = $path;
        $view['page[pager]'] = $pager;
        $this->drupalGet('admin/structure/views/add');
        $this->submitForm($view, 'Save and edit');
    }

}