test/palm-roundtrip.test


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#! /bin/bash
# This script tests: pnmtopalm palmtopnm
# Also requires: pamdepth pnmquant

tmpdir=${tmpdir:-/tmp}
test4bit_pgm=${tmpdir}/test4bit.pgm
test256color_ppm=${tmpdir}/test256color.ppm

# Test 1. Should print 584219238 236  5 times

pamdepth 15 testgrid.pbm | tee ${test4bit_pgm} | cksum

for flags in "" \
             "-scanline_compression" \
             "-rle_compression" \
             "-packbits_compression"
  do pnmtopalm $flags ${test4bit_pgm} | palmtopnm | cksum; done

rm ${test4bit_pgm}


# Test 2. Should print 0 4 times

pnmquant 256 testimg.ppm > ${test256color_ppm}

for flags in "" \
             "-scanline_compression" \
             "-rle_compression" \
             "-packbits_compression" 
  do pnmtopalm -colormap $flags ${test256color_ppm} | palmtopnm | \
     cmp -s - ${test256color_ppm} > /dev/null
     echo $?
  done

rm ${test256color_ppm}