Imbo\EventListener\ImageVariations\Storage\Filesystem::deleteImageVariations PHP Method

    public function deleteImageVariations($user, $imageIdentifier, $width = null)
    {
        // If width is specified, delete only the specific image
        if ($width !== null) {
            return unlink($this->getImagePath($user, $imageIdentifier, $width, true));
        }
        // If width is not specified, delete every variation, then the folder
        $variationsPath = $this->getImagePath($user, $imageIdentifier);
        if (!is_dir($variationsPath)) {
            return false;
        }
        array_map('unlink', glob($variationsPath . '/*'));
        return rmdir($variationsPath);
    }

 /**
  * @covers Imbo\EventListener\ImageVariations\Storage\Filesystem::deleteImageVariations
  */
 public function testDoesNotThrowWhenDeletingNonExistantVariation()
 {
     $dir = 'basedir';
     vfsStream::setup($dir);
     $adapter = new Filesystem(['dataDir' => vfsStream::url($dir)]);
     $this->assertFalse($adapter->deleteImageVariations('pub', 'img'));
 }