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|
#! /bin/bash
# This script tests: pgmramp pamgauss pgmkernel pbmpscale
# Also requires: pamflip
alias pgmramp="${PBM_TESTPREFIX}pgmramp"
alias pamgauss="${PBM_TESTPREFIX}pamgauss"
alias pgmkernel="${PBM_TESTPREFIX}pgmkernel"
alias pbmpscale="${PBM_TESTPREFIX}pbmpscale"
alias pamflip="${PBM_BINPREFIX}pamflip"
shopt -s expand_aliases
# All tests print "ok" upon success, cksum results otherwise.
# The "$3>0" is a kludge for preventing false positives with empty files.
# All test images are square and have the symmetries of the square (Dih4).
# The sole exception is ell.pgm which is a rectangle (Dih2, also called
# "Klein four-group".)
# Example symmetric square PGM image:
# P2
# 5 5
# 6
# 1 2 3 2 1
# 2 4 5 4 2
# 3 5 6 5 3
# 2 4 5 4 2
# 1 2 3 2 1
## Failure with this test indicates that a generator or editor which
## should produce symmetric output images isn't doing so.
# Test 1.
pgmramp -rect 31 31 > ${tmpdir}/rect.pgm
( for op in -null -tb -lr -r90
do pamflip $op ${tmpdir}/rect.pgm | cksum
done ) | uniq -c | \
awk '$1==4 && $3>0 { print "ok"; exit }; { print }'
rm ${tmpdir}/rect.pgm
# Test 2.
pgmramp -ell 63 63 > ${tmpdir}/circle.pgm
( for op in -null -tb -lr -r90
do pamflip $op ${tmpdir}/circle.pgm | cksum
done ) | uniq -c | \
awk '$1==4 && $3>0 { print "ok"; exit }; { print }'
rm ${tmpdir}/circle.pgm
# Test 3.
pamgauss -sigma=0.1 -tupletype=GRAYSCALE 25 25 > ${tmpdir}/gauss.pam
( for op in -null -tb -lr -r90
do pamflip $op ${tmpdir}/gauss.pam | cksum
done ) | uniq -c | \
awk '$1==4 && $3>0 { print "ok"; exit }; { print }'
rm ${tmpdir}/gauss.pam
# Test 4.
pgmkernel 15 15 > ${tmpdir}/kernel.pgm
( for op in -null -tb -lr -r90
do pamflip $op ${tmpdir}/kernel.pgm | cksum
done ) | uniq -c | \
awk '$1==4 && $3>0 { print "ok"; exit }; { print }'
rm ${tmpdir}/kernel.pgm
# Test 5.
# Should print "ok" 7 times.
for size in `seq 1 7`
do
pbmmake -g 5 5 | pbmpscale $size > ${tmpdir}/pscale.pbm
( for op in -null -tb -lr -r90
do pamflip $op ${tmpdir}/pscale.pbm | cksum
done ) | uniq -c | \
awk '$1==4 && $3>0 { print "ok"; exit }; { print }'
rm ${tmpdir}/pscale.pbm
done
# Test 6.
pgmramp -ell 101 33 > ${tmpdir}/ell.pgm
( for op in -null -tb -lr
do pamflip $op ${tmpdir}/ell.pgm | cksum
done ) | uniq -c | \
awk '$1==3 && $3>0 { print "ok"; exit }; { print }'
rm ${tmpdir}/ell.pgm
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