test/targa-roundtrip.test


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#! /bin/bash
# This script tests: pamtotga tgatoppm
# Also requires: ppmtopgm pgmtopbm pamchannel pnmquant pamdepth

tmpdir=${tmpdir:-/tmp}

#Test 1: Should print 2425386270 41, cksum of testgrid.pbm, ten times

echo "Test 1"

for mode in "-mono" "-mono -norle" \
            "-cmap" "-cmap -norle" "-cmap16" "-cmap16 -norle" \
            "-rgb"  "-rgb  -norle" "" "-norle"
  do
  pamtotga ${mode} testgrid.pbm | \
    tgatoppm | ppmtopgm | \
    pgmtopbm -threshold -val 0.5 | cksum
  done

#Test 2:  Should produce 1571496937 33838, cksum of testimg.red, ten times

echo "Test 2"

test_pam=${tmpdir}/testimg.pgm
pamchannel -infile=testimg.ppm -tupletype="GRAYSCALE" 0 > ${test_pam}

for mode in "-mono" "-mono -norle" \
            "-cmap" "-cmap -norle" "-cmap16" "-cmap16 -norle" \
            "-rgb"  "-rgb  -norle" "" "-norle"
  do
  pamtotga ${mode} ${test_pam} | tgatoppm | ppmtopgm | cksum
  done

rm ${test_pam}


#Test 3: Should print 1926073387 101484, cksum of testimg.ppm, four times

echo "Test 3"

for mode in "-rgb" "-rgb -norle" "" "-norle"
  do
  pamtotga ${mode} testimg.ppm | tgatoppm | cksum
  done

#Test 4: Should print 0 six times

echo "Test 4"

test256_ppm=${tmpdir}/test256.ppm
pnmquant 256 testimg.ppm > ${test256_ppm} || echo "pnmquant failed"
# test image may have less than 256 colors

for mode in "-rgb" "-rgb -norle" "-cmap" "-cmap -norle" "" "-norle"
  do
  pamtotga ${mode} ${test256_ppm} | tgatoppm | cmp -s - ${test256_ppm}
  echo ${PIPESTATUS[@]} ":" $?
done


#Test 5: Should print 0 eight times

echo "Test 5"

test256_31_ppm=${tmpdir}/test256-31.ppm
pamdepth 31 ${test256_ppm} > ${test256_31_ppm} || echo "pamdepth failed"
rm ${test256_ppm}

for mode in "-cmap16" "-cmap16 -norle"
  do pamtotga ${mode} ${test256_31_ppm} | tgatoppm | cmp -s - ${test256_31_ppm}
  echo ${PIPESTATUS[@]} ":" $?
  done

for mode in  "-rgb" "-rgb -norle" "-cmap" "-cmap -norle" "" "-norle"
  do pamtotga ${mode} ${test256_31_ppm} | tgatoppm | \
     pamdepth 31 | cmp -s - ${test256_31_ppm}
  echo ${PIPESTATUS[@]} ":" $?
  done

rm ${test256_31_ppm}