ExportStorageManagerTest.php

<?php

namespace Drupal\KernelTests\Core\Config;

use Drupal\Core\Config\ExportStorageManager;
use Drupal\Core\Config\StorageTransformerException;
use Drupal\Core\Lock\NullLockBackend;
use Drupal\KernelTests\KernelTestBase;

/**
 * Tests the export storage manager.
 *
 * @group config
 */
class ExportStorageManagerTest extends KernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'system',
        'config_transformer_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->installConfig([
            'system',
        ]);
    }
    
    /**
     * Tests getting the export storage.
     */
    public function testGetStorage() {
        // Get the raw system.site config and set it in the sync storage.
        $rawConfig = $this->config('system.site')
            ->getRawData();
        $this->container
            ->get('config.storage.sync')
            ->write('system.site', $rawConfig);
        // The export storage manager under test.
        $manager = new ExportStorageManager($this->container
            ->get('config.storage'), $this->container
            ->get('database'), $this->container
            ->get('event_dispatcher'), new NullLockBackend());
        $storage = $manager->getStorage();
        $exported = $storage->read('system.site');
        // The test subscriber adds "Arrr" to the slogan of the sync config.
        $this->assertEquals($rawConfig['name'], $exported['name']);
        $this->assertEquals($rawConfig['slogan'] . ' Arrr', $exported['slogan']);
        // Save the config to active storage so that the transformer can alter it.
        $this->config('system.site')
            ->set('name', 'New name')
            ->set('slogan', 'New slogan')
            ->save();
        // Get the storage again.
        $storage = $manager->getStorage();
        $exported = $storage->read('system.site');
        // The test subscriber adds "Arrr" to the slogan of the sync config.
        $this->assertEquals('New name', $exported['name']);
        $this->assertEquals($rawConfig['slogan'] . ' Arrr', $exported['slogan']);
        // Change what the transformer does without changing anything else to assert
        // that the event is dispatched every time the storage is needed.
        $this->container
            ->get('state')
            ->set('config_transform_test_mail', 'config@drupal.example');
        $storage = $manager->getStorage();
        $exported = $storage->read('system.site');
        // The mail is still set to the value from the beginning.
        $this->assertEquals('config@drupal.example', $exported['mail']);
    }
    
    /**
     * Tests the export storage when it is locked.
     */
    public function testGetStorageLock() {
        $lock = $this->createMock('Drupal\\Core\\Lock\\LockBackendInterface');
        $lock->expects($this->exactly(2))
            ->method('acquire')
            ->with(ExportStorageManager::LOCK_NAME)
            ->willReturn(FALSE);
        $lock->expects($this->once())
            ->method('wait')
            ->with(ExportStorageManager::LOCK_NAME);
        // The export storage manager under test.
        $manager = new ExportStorageManager($this->container
            ->get('config.storage'), $this->container
            ->get('database'), $this->container
            ->get('event_dispatcher'), $lock);
        $this->expectException(StorageTransformerException::class);
        $this->expectExceptionMessage("Cannot acquire config export transformer lock.");
        $manager->getStorage();
    }

}