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#! /bin/bash
# This script tests: pamenlarge
# Also requires: pbmmake pnmpad
tmpdir=${tmpdir:-/tmp}
complete256_pbm=${tmpdir}/complete256.pbm
# works with gawk and mawk
# produce all possible 8-bit patterns
LC_ALL=C awk 'BEGIN { print "P4"; # header
print "8 256";
for (i=0;i<256;++i) # raster
printf("%c",i) }' > ${complete256_pbm}
# xscale factor should be tested to at least 21 (=13+8)
# Test 1.
echo "test 1"
for xs in `seq 23`
do
pamenlarge -xscale=$xs ${complete256_pbm} | cksum
done
# Test 2.
echo "test 2"
for xs1 in `seq 15`
do
xs2=$((30-$xs1))
pamenlarge -xscale=$xs1 ${complete256_pbm} | pamenlarge -xscale=$xs2 | cksum
if [ $xs1 != $xs2 ]; then
pamenlarge -xscale=$xs2 ${complete256_pbm} | pamenlarge -xscale=$xs1 | cksum
fi
pamenlarge -xscale=$(($xs1 * $xs2)) ${complete256_pbm} | cksum
done
rm ${complete256_pbm}
# Test 3.
echo "test 3"
test3_pbm=${tmpdir}/test3.pbm
for width in `seq 16`
do
pbmmake -g ${width} 1 | pnmpad -top=1 -white | \
pnmpad -bottom=1 -black > ${test3_pbm}.${width}
done
for xscale in `seq 16`
do echo -n ${xscale} " "
for width in `seq 16`
do pamenlarge -xscale=${xscale} ${test3_pbm}.${width} ; done | cksum
#
# unlike most other tests we take the cksum of a composite PBM file
#
done
rm ${test3_pbm}.[1-9] ${test3_pbm}.1[0-6]
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