#! /bin/bash
# This script tests: pnmquantall
# Also requires: ppmtorgb3 pgmhist

tmpdir=${tmpdir:-/tmp}
test_ppm=${tmpdir}/testimg.ppm

cp testimg.ppm ${tmpdir} &&
ppmtorgb3 ${test_ppm}

test_red=${tmpdir}/testimg.red
test_grn=${tmpdir}/testimg.grn
test_blu=${tmpdir}/testimg.blu

pnmquantall 20 ${test_red} ${test_grn} ${test_blu}

for i in ${test_red} ${test_grn} ${test_blu}
do
cat $i | cksum
done

# Should print 1

pnmcat ${test_red} ${test_grn} ${test_blu} -tb | \
    pgmhist -m | awk '$2>0 {s++}; END { print (s<=20) }'

rm ${test_red} ${test_grn} ${test_blu} ${test_ppm}