/**
* @expectedException \Magento\Framework\Exception\FileSystemException
* @expectedExceptionMessage Deployment config file env.php is not writable.
*/
public function testSaveConfigException()
{
$this->configFilePool->method('getPaths')->willReturn([ConfigFilePool::APP_ENV => 'env.php']);
$exception = new FileSystemException(new Phrase('error when writing file config file'));
$this->dirWrite->method('writeFile')->willThrowException($exception);
$this->object->saveConfig([ConfigFilePool::APP_ENV => ['key' => 'value']]);
}
