#! /bin/bash
# This script tests: pnmquant
# Also requires: ppmhist

echo "Test 1"

# Count colors in output image.

pnmquant 256 testimg.ppm | ppmhist | \
  awk 'NR==1 {print ($2 <= 256) , ($2 > 256 * 0.95)}' 

pnmquant -center 256 testimg.ppm | ppmhist | \
  awk 'NR==1 {print ($2 <= 256) , ($2 > 256 * 0.95)}' 

pnmquant -spreadbrightness 256 testimg.ppm | ppmhist | \
  awk 'NR==1 {print ($2 <= 256) , ($2 > 256 * 0.95)}' 

pnmquant -spreadluminosity 128 testimg.ppm | ppmhist | \
  awk 'NR==1 {print ($2 <= 128) , ($2 > 128 * 0.95)}' 

pnmquant -floyd -randomseed=0 128 testimg.ppm | ppmhist | \
  awk 'NR==1 {print ($2 <= 128) , ($2 > 128 * 0.95)}' 

pnmquant 64 -meanpixel testimg.ppm | ppmhist | \
  awk 'NR==1 {print ($2 <= 64) , ($2 > 64 * 0.9)}' 

pnmquant 16 -meancolor testimg.ppm | ppmhist | \
  awk 'NR==1 {print ($2 <= 16) , ($2 > 16 * 0.9)}' 


pnmquant 2 testgrid.pbm | ppmhist | \
  awk 'NR==1 {print ($2 <= 2) , ($2 == 2) }' 
 
echo "Test Invalid"

echo 1>&2
echo "Invalid command-line arguments." 1>&2
echo "Error messages should appear below the line." 1>&2
echo "-----------------------------------------------------------" 1>&2

tmpdir=${tmpdir:-/tmp}
test_out=${tmpdir}/test_out

pnmquant 0 testimg.ppm   > ${test_out} || \
  echo -n "Expected failure 1"; test -s ${test_out}; echo " "$?
pnmquant testimg.ppm  > ${test_out} || \
  echo -n "Expected failure 2"; test -s ${test_out}; echo " "$?
pnmquant 10.5 testimg.ppm > ${test_out} || \
  echo -n "Expected failure 3"; test -s ${test_out}; echo " "$?
pnmquant -center -meancolor 16 testimg.ppm > ${test_out} || \
  echo -n "Expected failure 4"; test -s ${test_out}; echo " "$?
pnmquant -center -meanpixel 16 testimg.ppm    > ${test_out} || \
  echo -n "Expected failure 5"; test -s ${test_out}; echo " "$?
pnmquant -meancolor -meanpixel 16 testimg.ppm > ${test_out} || \
  echo -n "Expected failure 6"; test -s ${test_out}; echo " "$?
pnmquant -spreadbrightness -spreadluminosity 16 testimg.ppm > ${test_out} || \
  echo -n "Expected failure 7"; test -s ${test_out}; echo " "$?
pnmquant -randomseed 1 -norandom 10 testimg.ppm > ${test_out} || \
  echo -n "Expected failure 8"; test -s ${test_out}; echo " "$?

rm ${test_out}