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

  alias pnminvert="${PBM_TESTPREFIX}pnminvert"
  alias pbmmake="${PBM_BINPREFIX}pbmmake"
  alias ppmtopgm="${PBM_BINPREFIX}ppmtopgm"
  shopt -s expand_aliases

# Test 1.  Should print 1240379484 41
pnminvert testgrid.pbm | cksum
# Test 2.  Should print 1416115901 101484
pnminvert testimg.ppm | cksum
# Test 3.  Should print 2961441369 33838
# printed 4215652354 33838 with older ppmtopgm
ppmtopgm testimg.ppm | pnminvert | cksum
# Test 4.  Should print 2595564405 14
pbmmake -w 7 7 | pnminvert | cksum
# Test 5.  Should print 2595564405 14
pbmmake -b 7 7 | cksum
# Test 6.  Should print 2595564405 14
pbmmake -b 7 7 | pnminvert | \
  pnminvert | cksum
# Test 7.  Should print 2896726098 15
pbmmake -g 8 8 | pnminvert | cksum