Issue #3310569: Basic test for COCF

  "require": {

    "php": ">=8.1",

    "drupal/core": ">=10"

  },

  "require-dev": {

    "drupal/coi": ">=4"

  }

}

<?php

declare(strict_types=1);

namespace Drupal\Tests\config_override_core_fields\Functional;

use Drupal\Core\Url;

use Drupal\Tests\BrowserTestBase;

/**

 * Tests Config Override Core Fields.

 *

 * @group config_override_core_fields

 */

final class ConfigOverrideCoreFieldsTest extends BrowserTestBase {

  /**

   * {@inheritdoc}

   */

  protected static $modules = ['system', 'coi', 'config_override_core_fields'];

  /**

   * {@inheritdoc}

   */

  protected $defaultTheme = 'stark';

  /**

   * A very simple test to get CI going.

   */

  public function testConfigOverrideCoreFields(): void {

    $this->drupalLogin($this->createUser(['administer site configuration']));

    $this->drupalGet(Url::fromRoute('system.performance_settings'));

    $this->assertSession()->statusCodeEquals(200);

    $this->assertSession()->responseContains('<h1>Performance</h1>');

    $this->assertSession()->pageTextContains('Aggregate CSS files');

    $this->assertSession()->pageTextNotContains('This field is overridden by environment specific configuration.');

    $this->assertDirectoryIsWritable($this->siteDirectory);

    $settingsFileName = $this->siteDirectory . '/settings.php';

    chmod($settingsFileName, 0777);

    $this->assertFileIsWritable($settingsFileName);

    $settingsPhp = file_get_contents($settingsFileName);

    $settingsPhp .= "\n\$config['system.performance']['css']['preprocess'] = FALSE;";

    file_put_contents($settingsFileName, $settingsPhp);

    $this->drupalGet(Url::fromRoute('system.performance_settings'));

    $this->assertSession()->statusCodeEquals(200);

    $this->assertSession()->responseContains('<h1>Performance</h1>');

    $this->assertSession()->pageTextContains('Aggregate CSS files');

    $this->assertSession()->pageTextContains('This field is overridden by environment specific configuration.');

  }

}