Revert "Issue #1843034 follow-up by Cottser: Tests for configurable Twig settings."

This reverts commit 3cf10751.

Tests no longer pass, so this breaks testbot.

core/modules/system/lib/Drupal/system/Tests/Theme/TwigSettingsTest.php

-<?php
-
-/**
- * @file
- * Contains \Drupal\system\Tests\Theme\TwigSettingsTest.
- */
-
-namespace Drupal\system\Tests\Theme;
-
-use Drupal\simpletest\WebTestBase;
-use Drupal\Component\PhpStorage\PhpStorageFactory;
-
-/**
- * Tests Twig engine configuration via settings.php.
- */
-class TwigSettingsTest extends WebTestBase {
-
-  /**
-   * Modules to enable.
-   *
-   * @var array
-   */
-  public static $modules = array('theme_test');
-
-  public static function getInfo() {
-    return array(
-      'name' => 'Twig Settings',
-      'description' => 'Tests overriding Twig engine settings via settings.php.',
-      'group' => 'Theme',
-    );
-  }
-
-  /**
-   * Ensures Twig template auto reload setting can be overridden.
-   */
-  function testTwigAutoReloadOverride() {
-    // Enable auto reload and rebuild the service container.
-    $this->settingsSet('twig_auto_reload', TRUE);
-    $this->rebuildContainer();
-
-    // Check isAutoReload() via the Twig service container.
-    $this->assertTrue(drupal_container()->get('twig')->isAutoReload(), 'Automatic reloading of Twig templates enabled.');
-
-    // Disable auto reload and check the service container again.
-    $this->settingsSet('twig_auto_reload', FALSE);
-    $this->rebuildContainer();
-
-    $this->assertFalse(drupal_container()->get('twig')->isAutoReload(), 'Automatic reloading of Twig templates disabled.');
-  }
-
-  /**
-   * Ensures Twig engine debug setting can be overridden.
-   */
-  function testTwigDebugOverride() {
-    // Enable debug and rebuild the service container.
-    $this->settingsSet('twig_debug', TRUE);
-    $this->rebuildContainer();
-
-    // Check isDebug() via the Twig service container.
-    $this->assertTrue(drupal_container()->get('twig')->isDebug(), 'Twig debug enabled.');
-    $this->assertTrue(drupal_container()->get('twig')->isAutoReload(), 'Twig automatic reloading is enabled when debug is enabled.');
-
-    // Override auto reload when debug is enabled.
-    $this->settingsSet('twig_auto_reload', FALSE);
-    $this->rebuildContainer();
-    $this->assertFalse(drupal_container()->get('twig')->isAutoReload(), 'Twig automatic reloading can be disabled when debug is enabled.');
-
-    // Disable debug and check the service container again.
-    $this->settingsSet('twig_debug', FALSE);
-    $this->rebuildContainer();
-
-    $this->assertFalse(drupal_container()->get('twig')->isDebug(), 'Twig debug disabled.');
-  }
-
-  /**
-   * Ensures Twig template cache setting can be overridden.
-   */
-  function testTwigCacheOverride() {
-    $extension = twig_extension();
-    theme_enable(array('test_theme_twig'));
-    variable_set('theme_default', 'test_theme_twig');
-
-    $cache = array();
-    // Prime the theme cache.
-    foreach (module_implements('theme') as $module) {
-      _theme_process_registry($cache, $module, 'module', $module, drupal_get_path('module', $module));
-    }
-
-    // Load array of Twig templates.
-    $templates = drupal_find_theme_templates($cache, $extension, drupal_get_path('theme', 'test_theme_twig'));
-
-    // Get the template filename and the cache filename for
-    // theme_test.template_test.html.twig.
-    $template_filename = $templates['theme_test_template_test']['path'] . '/' . $templates['theme_test_template_test']['template'] . $extension;
-    $cache_filename = drupal_container()->get('twig')->getCacheFilename($template_filename);
-
-    // Navigate to the page and make sure the template gets cached.
-    $this->drupalGet('theme-test/template-test');
-    $this->assertTrue(PhpStorageFactory::get('twig')->exists($cache_filename), 'Cached Twig template found.');
-
-    // Disable the Twig cache and rebuild the service container.
-    $this->settingsSet('twig_cache', FALSE);
-    $this->rebuildContainer();
-
-    // This should return false after rebuilding the service container.
-    $new_cache_filename = drupal_container()->get('twig')->getCacheFilename($template_filename);
-    $this->assertFalse($new_cache_filename, 'Twig environment does not return cache filename after caching is disabled.');
-  }
-
-}