Gush\Tests\BaseTestCase::setUp PHP Method

    protected function setUp()
    {
        if ('true' === getenv('GUSH_USE_FS')) {
            $this->tmpFs = sys_get_temp_dir();
            if (!$this->tmpFs) {
                $this->markTestSkipped('No system temp directory configured.');
            }
        } else {
            $this->tmpFs = vfsStream::setup();
        }
    }

 protected function setUp()
 {
     parent::setUp();
     $this->homedir = $this->getNewTmpFolder('gush-home');
     putenv('GUSH_HOME=' . $this->homedir);
     putenv('GUSH_CACHE_DIR');
 }