EarlyRenderingControllerTest.php

<?php

namespace Drupal\Tests\system\Functional\Common;

use Drupal\Core\Url;
use Drupal\Tests\BrowserTestBase;

/**
 * Verifies that bubbleable metadata of early rendering is not lost.
 *
 * @group Common
 */
class EarlyRenderingControllerTest extends BrowserTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'system',
        'early_rendering_controller_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Tests theme preprocess functions being able to attach assets.
     */
    public function testEarlyRendering() {
        // Render array: non-early & early.
        $this->drupalGet(Url::fromRoute('early_rendering_controller_test.render_array'));
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->pageTextContains('Hello world!');
        $this->assertSession()
            ->responseHeaderContains('X-Drupal-Cache-Tags', 'foo');
        $this->drupalGet(Url::fromRoute('early_rendering_controller_test.render_array.early'));
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->pageTextContains('Hello world!');
        $this->assertSession()
            ->responseHeaderContains('X-Drupal-Cache-Tags', 'foo');
        // AjaxResponse: non-early & early.
        // @todo Add cache tags assertion when AjaxResponse is made cacheable in
        //   https://www.drupal.org/node/956186.
        $this->drupalGet(Url::fromRoute('early_rendering_controller_test.ajax_response'));
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->pageTextContains('Hello world!');
        $this->drupalGet(Url::fromRoute('early_rendering_controller_test.ajax_response.early'));
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->pageTextContains('Hello world!');
        // Basic Response object: non-early & early.
        $this->drupalGet(Url::fromRoute('early_rendering_controller_test.response'));
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->pageTextContains('Hello world!');
        $this->assertSession()
            ->responseHeaderNotContains('X-Drupal-Cache-Tags', 'foo');
        $this->drupalGet(Url::fromRoute('early_rendering_controller_test.response.early'));
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->pageTextContains('Hello world!');
        $this->assertSession()
            ->responseHeaderNotContains('X-Drupal-Cache-Tags', 'foo');
        // Response object with attachments: non-early & early.
        $this->drupalGet(Url::fromRoute('early_rendering_controller_test.response-with-attachments'));
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->pageTextContains('Hello world!');
        $this->assertSession()
            ->responseHeaderNotContains('X-Drupal-Cache-Tags', 'foo');
        $this->drupalGet(Url::fromRoute('early_rendering_controller_test.response-with-attachments.early'));
        $this->assertSession()
            ->statusCodeEquals(500);
        $this->assertSession()
            ->pageTextContains('The controller result claims to be providing relevant cache metadata, but leaked metadata was detected. Please ensure you are not rendering content too early. Returned object class: Drupal\\early_rendering_controller_test\\AttachmentsTestResponse.');
        // Cacheable Response object: non-early & early.
        $this->drupalGet(Url::fromRoute('early_rendering_controller_test.cacheable-response'));
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->pageTextContains('Hello world!');
        $this->assertSession()
            ->responseHeaderNotContains('X-Drupal-Cache-Tags', 'foo');
        $this->drupalGet(Url::fromRoute('early_rendering_controller_test.cacheable-response.early'));
        $this->assertSession()
            ->statusCodeEquals(500);
        $this->assertSession()
            ->pageTextContains('The controller result claims to be providing relevant cache metadata, but leaked metadata was detected. Please ensure you are not rendering content too early. Returned object class: Drupal\\early_rendering_controller_test\\CacheableTestResponse.');
        // Basic domain object: non-early & early.
        $this->drupalGet(Url::fromRoute('early_rendering_controller_test.domain-object'));
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->pageTextContains('TestDomainObject');
        $this->assertSession()
            ->responseHeaderNotContains('X-Drupal-Cache-Tags', 'foo');
        $this->drupalGet(Url::fromRoute('early_rendering_controller_test.domain-object.early'));
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->pageTextContains('TestDomainObject');
        $this->assertSession()
            ->responseHeaderNotContains('X-Drupal-Cache-Tags', 'foo');
        // Basic domain object with attachments: non-early & early.
        $this->drupalGet(Url::fromRoute('early_rendering_controller_test.domain-object-with-attachments'));
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->pageTextContains('AttachmentsTestDomainObject');
        $this->assertSession()
            ->responseHeaderNotContains('X-Drupal-Cache-Tags', 'foo');
        $this->drupalGet(Url::fromRoute('early_rendering_controller_test.domain-object-with-attachments.early'));
        $this->assertSession()
            ->statusCodeEquals(500);
        $this->assertSession()
            ->pageTextContains('The controller result claims to be providing relevant cache metadata, but leaked metadata was detected. Please ensure you are not rendering content too early. Returned object class: Drupal\\early_rendering_controller_test\\AttachmentsTestDomainObject.');
        // Cacheable Response object: non-early & early.
        $this->drupalGet(Url::fromRoute('early_rendering_controller_test.cacheable-domain-object'));
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->pageTextContains('CacheableTestDomainObject');
        $this->assertSession()
            ->responseHeaderNotContains('X-Drupal-Cache-Tags', 'foo');
        $this->drupalGet(Url::fromRoute('early_rendering_controller_test.cacheable-domain-object.early'));
        $this->assertSession()
            ->statusCodeEquals(500);
        $this->assertSession()
            ->pageTextContains('The controller result claims to be providing relevant cache metadata, but leaked metadata was detected. Please ensure you are not rendering content too early. Returned object class: Drupal\\early_rendering_controller_test\\CacheableTestDomainObject.');
        // The exceptions are expected. Do not interpret them as a test failure.
        // Not using File API; a potential error must trigger a PHP warning.
        unlink($this->root . '/' . $this->siteDirectory . '/error.log');
    }

}