/**
  * @covers ::getConfiguration
  * @covers ::setConfiguration
  */
 public function testGetSetConfiguration()
 {
     $configuration = FileCacheFactory::getConfiguration();
     $configuration['test_foo_bar'] = ['bar' => 'llama'];
     FileCacheFactory::setConfiguration($configuration);
     $configuration = FileCacheFactory::getConfiguration();
     $this->assertEquals(['bar' => 'llama'], $configuration['test_foo_bar']);
 }