class MockPhpStorage

class MockPhpStorage {
  
  /**
   * The storage configuration.
   *
   * @var array
   */
  protected $configuration;
  
  /**
   * Constructs a MockPhpStorage object.
   *
   * @param array $configuration
   *   The storage configuration.
   */
  public function __construct(array $configuration) {
    $this->configuration = $configuration;
  }
  
  /**
   * Gets the configuration data.
   */
  public function getConfiguration() {
    return $this->configuration;
  }
  
  /**
   * Gets a single configuration key.
   */
  public function getConfigurationValue($key) {
    return $this->configuration[$key] ?? NULL;
  }

}