#! /bin/bash

# This script tests: pngtopam pnmtopng

# Also requires:

# Failure message

## If this test fails and pnm-roundtrip2.test succeeds, it indicates

## some problem with pnmtopng.

# Test 1.  Should print 1926073387 101484 18 times

for flags in "" -interlace \

  -gamma=.45 \

  -hist \

  -nofilter \

  -sub \

  -up \

  -avg \

  -paeth \

  -compression=9 \

  "-compression=0 -comp_mem=1 -comp_window=8 -comp_buffer=512" \

  "-compression=9 -comp_mem=1 -comp_window=15 -comp_buffer=512" \

  "-compression=9 -comp_mem=1 -comp_window=8 -comp_buffer=512" \

  "-compression=0 -comp_mem=9 -comp_window=8 -comp_buffer=512" \

  "-compression=9 -comp_mem=9 -comp_window=15 -comp_buffer=8096" \

  -comp_strategy=huffman_only \

  -comp_strategy=filtered \

  -force

  do

pnmtopng testimg.ppm $flags | pngtopam | cksum

done

# Test 2.  Should print 2425386270 41 18 times

for flags in "" -interlace \

  -gamma=.45 \

  -hist \

  -nofilter \

  -sub \

  -up \

  -avg \

  -paeth \

  -compression=9 \

  "-compression=0 -comp_mem=1 -comp_window=8 -comp_buffer=512" \

  "-compression=9 -comp_mem=1 -comp_window=15 -comp_buffer=512" \

  "-compression=9 -comp_mem=1 -comp_window=8 -comp_buffer=512" \

  "-compression=0 -comp_mem=9 -comp_window=8 -comp_buffer=512" \

  "-compression=9 -comp_mem=9 -comp_window=15 -comp_buffer=8096" \

  -comp_strategy=huffman_only \

  -comp_strategy=filtered \

  -force

  do

  pnmtopng testgrid.pbm $flags | pngtopam | cksum

  done