#! /bin/bash
# This script tests: pamfile
# Also requires: pamchannel pamtopnm

echo "Test 1"

pamfile testimg.ppm
pamfile testgrid.pbm
pamchannel -infile=testimg.ppm -tupletype="GRAYSCALE" 0 | pamtopnm | pamfile
pamchannel -tupletype="GRAYSCALE" -infile=testimg.ppm 0 | pamfile

echo "Test 2"

cat testgrid.pbm testgrid.pbm testgrid.pbm | pamfile -count
cat testgrid.pbm testgrid.pbm testgrid.pbm | pamfile -allimages

echo "Test 3"

pamfile -size testimg.ppm
pamfile -machine testimg.ppm
cat testgrid.pbm testimg.ppm testgrid.pbm | pamfile -machine

echo "Test 4"

echo 1>&2
echo "Invalid command-line argument combinations." 1>&2
echo "Error messages should appear below the line." 1>&2
echo "-----------------------------------------------------------" 1>&2

pamfile -size -machine  testimg.ppm || echo "Expected failure 1"
pamfile -count -machine testimg.ppm || echo "Expected failure 2"
head -n1 testimg.ppm | pamfile || echo "Expected failure 3"