ExtensionInstallStorageTest.php

<?php

namespace Drupal\Tests\Core\Config;

use Drupal\Core\Config\ExtensionInstallStorage;
use Drupal\Core\Config\InstallStorage;
use Drupal\Core\Config\MemoryStorage;
use Drupal\Core\Config\StorageInterface;
use Drupal\Tests\UnitTestCase;

/**
 * @coversDefaultClass \Drupal\Core\Config\ExtensionInstallStorage
 * @group Config
 */
class ExtensionInstallStorageTest extends UnitTestCase {
    
    /**
     * @covers ::createCollection
     */
    public function testCreateCollection() {
        $memory = new MemoryStorage();
        $include_profile = FALSE;
        $profile = $this->randomMachineName();
        $collectionName = $this->randomMachineName();
        // Set up the storage.
        $storage = new ExtensionInstallStorage($memory, InstallStorage::CONFIG_INSTALL_DIRECTORY, StorageInterface::DEFAULT_COLLECTION, $include_profile, $profile);
        // Create a collection.
        $collection = $storage->createCollection($collectionName);
        static::assertEquals($collectionName, $collection->getCollectionName());
    }

}