/** @test */
 public function it_can_determine_a_human_readable_filesize()
 {
     $this->assertEquals('10 B', Format::getHumanReadableSize(10));
     $this->assertEquals('100 B', Format::getHumanReadableSize(100));
     $this->assertEquals('1000 B', Format::getHumanReadableSize(1000));
     $this->assertEquals('9.77 KB', Format::getHumanReadableSize(10000));
     $this->assertEquals('976.56 KB', Format::getHumanReadableSize(1000000));
     $this->assertEquals('9.54 MB', Format::getHumanReadableSize(10000000));
     $this->assertEquals('9.31 GB', Format::getHumanReadableSize(10000000000));
 }
 /**
  * @return string
  */
 public function getUsedSpace()
 {
     return Format::getHumanReadableSize($this->usedSpace);
 }