BigPipePreviewTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\big_pipe\FunctionalJavascript;

use Drupal\FunctionalJavascriptTests\WebDriverTestBase;

/**
 * Tests placeholder preview functionality.
 *
 * @group big_pipe
 */
class BigPipePreviewTest extends WebDriverTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'big_pipe',
        'user',
        'big_pipe_bypass_js',
        'big_pipe_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'big_pipe_test_theme';
    
    /**
     * Test preview functionality within placeholders.
     */
    public function testLazyLoaderPreview() : void {
        $user = $this->drupalCreateUser([]);
        $display_name = $user->getDisplayName();
        $this->drupalLogin($user);
        $this->drupalGet('big_pipe_test_preview');
        // This test begins with the big_pipe_bypass_js module enabled, which blocks
        // Big Pipe's JavaScript from loading. Without that JavaScript, the
        // placeholder and previews are not replaced and we can reliably test their
        // presence.
        $this->assertSession()
            ->elementExists('css', '#placeholder-preview-twig-container [data-big-pipe-placeholder-id] > .i-am-taking-up-space');
        $this->assertSession()
            ->elementTextEquals('css', '#placeholder-preview-twig-container [data-big-pipe-placeholder-id] > .i-am-taking-up-space', 'LOOK AT ME I AM CONSUMING SPACE FOR LATER');
        $this->assertSession()
            ->elementTextNotContains('css', '#placeholder-preview-twig-container', $display_name);
        $this->assertSession()
            ->pageTextContains('There is a lamb and there is a puppy');
        $this->assertSession()
            ->elementTextEquals('css', '#placeholder-render-array-container [data-big-pipe-placeholder-id] > #render-array-preview', 'There is a lamb and there is a puppy');
        $this->assertSession()
            ->elementTextNotContains('css', '#placeholder-render-array-container', 'Llamas forever!');
        // Uninstall big_pipe_bypass_js.
        \Drupal::service('module_installer')->uninstall([
            'big_pipe_bypass_js',
        ]);
        $this->rebuildAll();
        $this->drupalGet('big_pipe_test_preview');
        $this->assertSession()
            ->waitForElementRemoved('css', '[data-big-pipe-placeholder-id]', 20000);
        $this->assertSession()
            ->elementTextContains('css', '#placeholder-preview-twig-container', $display_name);
        $this->assertSession()
            ->pageTextNotContains('LOOK AT ME I AM CONSUMING SPACE FOR LATER');
        $this->assertSession()
            ->elementTextContains('css', '#placeholder-render-array-container marquee', 'Llamas forever!');
        $this->assertSession()
            ->pageTextNotContains('There is a lamb and there is a puppy');
    }

}