#! /bin/bash
# This script tests: ppmchange
# Also requires: pgmtopbm pnminvert ppmtopgm

${PBM_TESTPREFIX}ppmchange black white white black testgrid.pbm | \
${PBM_BINPREFIX}pnminvert | ${PBM_BINPREFIX}ppmtopgm | \
${PBM_BINPREFIX}pgmtopbm -th -val=0.5 | cksum

${PBM_TESTPREFIX}ppmchange  black white white black testgrid.pbm | \
${PBM_TESTPREFIX}ppmchange  black white white black -plain  | \
${PBM_BINPREFIX}ppmtopgm | ${PBM_BINPREFIX}pgmtopbm -th -val=0.5 | cksum