SettingsRewriteTest.php

<?php

namespace Drupal\KernelTests\Core\Site;

use Drupal\Core\Site\Settings;
use Drupal\KernelTests\KernelTestBase;

/**
 * Tests the drupal_rewrite_settings() function.
 *
 * @group system
 */
class SettingsRewriteTest extends KernelTestBase {
    
    /**
     * Tests the drupal_rewrite_settings() function.
     */
    public function testDrupalRewriteSettings() {
        include_once $this->root . '/core/includes/install.inc';
        $site_path = $this->container
            ->getParameter('site.path');
        $tests = [
            [
                'original' => '$no_index_value_scalar = TRUE;',
                'settings' => [
                    'no_index_value_scalar' => (object) [
                        'value' => FALSE,
                        'comment' => 'comment',
                    ],
                ],
                'expected' => '$no_index_value_scalar = false; // comment',
            ],
            [
                'original' => '$no_index_value_scalar = TRUE;',
                'settings' => [
                    'no_index_value_foo' => [
                        'foo' => [
                            'value' => (object) [
                                'value' => NULL,
                                'required' => TRUE,
                                'comment' => 'comment',
                            ],
                        ],
                    ],
                ],
                'expected' => <<<'EXPECTED'
$no_index_value_scalar = TRUE;
$no_index_value_foo['foo']['value'] = NULL; // comment
EXPECTED
,
            ],
            [
                'original' => '$no_index_value_array = array("old" => "value");',
                'settings' => [
                    'no_index_value_array' => (object) [
                        'value' => FALSE,
                        'required' => TRUE,
                        'comment' => 'comment',
                    ],
                ],
                'expected' => '$no_index_value_array = array("old" => "value");
$no_index_value_array = false; // comment',
            ],
            [
                'original' => '$has_index_value_scalar["foo"]["bar"] = NULL;',
                'settings' => [
                    'has_index_value_scalar' => [
                        'foo' => [
                            'bar' => (object) [
                                'value' => FALSE,
                                'required' => TRUE,
                                'comment' => 'comment',
                            ],
                        ],
                    ],
                ],
                'expected' => '$has_index_value_scalar["foo"]["bar"] = false; // comment',
            ],
            [
                'original' => '$has_index_value_scalar["foo"]["bar"] = "foo";',
                'settings' => [
                    'has_index_value_scalar' => [
                        'foo' => [
                            'value' => (object) [
                                'value' => [
                                    'value' => 2,
                                ],
                                'required' => TRUE,
                                'comment' => 'comment',
                            ],
                        ],
                    ],
                ],
                'expected' => <<<'EXPECTED'
$has_index_value_scalar["foo"]["bar"] = "foo";
$has_index_value_scalar['foo']['value'] = array (
  'value' => 2,
); // comment
EXPECTED
,
            ],
        ];
        foreach ($tests as $test) {
            $filename = Settings::get('file_public_path', $site_path . '/files') . '/mock_settings.php';
            file_put_contents($filename, "<?php\n" . $test['original'] . "\n");
            drupal_rewrite_settings($test['settings'], $filename);
            $this->assertEquals("<?php\n" . $test['expected'] . "\n", file_get_contents($filename));
        }
        // Test that <?php gets added to the start of an empty settings file.
        // Set the array of settings that will be written to the file.
        $test = [
            'settings' => [
                'no_index' => (object) [
                    'value' => TRUE,
                    'required' => TRUE,
                ],
            ],
            'expected' => '$no_index = true;',
        ];
        // Make an empty file.
        $filename = Settings::get('file_public_path', $site_path . '/files') . '/mock_settings.php';
        file_put_contents($filename, "");
        // Write the setting to the file.
        drupal_rewrite_settings($test['settings'], $filename);
        // Check that the result is just the php opening tag and the settings.
        $this->assertEquals("<?php\n" . $test['expected'] . "\n", file_get_contents($filename));
    }

}