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#! /bin/bash
# This script tests: pamhue
# Also requires: pamseq ppmhist pamdepth
echo "Test 1"
# Should print 1213482165 83 twice
pamseq -tupletype=RGB 3 1 | pamdepth 255 | pamhue -huechange=60 | cksum
pamseq -tupletype=RGB 3 1 | pamdepth 255 | pamhue -huechange=-300 | cksum
echo "Test 2"
pamseq -tupletype=RGB 3 1 | pamdepth 255 | ppmhist -sort=rgb
pamseq -tupletype=RGB 3 1 | pamdepth 255 | pamhue -huechange=60 | \
ppmhist -sort=rgb
echo "Test 3"
# pamhue has no effect on monotone images
# Should print 281226646 481 twice
pamhue -huechange=45 maze.pbm | cmp -s - maze.pbm
echo ${PIPESTATUS[@]} ":" $?
pamhue -huechange=180 maze.pbm | cmp -s - maze.pbm
echo ${PIPESTATUS[@]} ":" $?
echo "Test 4"
# spinning the color wheel by multiples of 360 leaves the image unchanged
# Should print 1926073387 101484 twice
pamhue -huechange=0 testimg.ppm | cmp -s - testimg.ppm
echo ${PIPESTATUS[@]} ":" $?
pamhue -huechange=360 testimg.ppm | cmp -s - testimg.ppm
echo ${PIPESTATUS[@]} ":" $?
echo "Test Invalid"
tmpdir=${tmpdir:-/tmp}
test_out=${tmpdir}/test_out
echo 1>&2
echo "Omission of mandatory argument." 1>&2
echo "An error message should appear below the line." 1>&2
echo "-----------------------------------------------------------" 1>&2
pamhue testimg.ppm > ${test_out} || \
printf "Expected failure 1 "
test -s ${test_out} && echo "unexpected output" || echo "(no output)"
rm -f ${test_out}
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