#############################
Expected output for 'h5dump -g /g2 /y tgroup.h5'
#############################
HDF5 "tgroup.h5" {
GROUP "/g2" {
   GROUP "g2.1" {
      GROUP "g2.1.1" {
      }
      GROUP "g2.1.2" {
      }
      GROUP "g2.1.3" {
      }
   }
}
GROUP "/y" {
   h5dump error: unable to open /y
}
}