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#! /bin/sh
# This script tests: pbmtext
# Also requires: pamfile

tmpdir=${tmpdir:-/tmp}

# Test 1:
echo "Test 1"

# Should print 3898818212 967 twice

pbmtext UNIX Philosophy: Do one thing and do it well. | cksum
printf "UNIX Philosophy: Do one thing and do it well." | pbmtext | cksum

# Should print 2506052117 1354 twice

pbmtext -builtin fixed \
    For truth is always strange. Stranger than fiction. Lord Byron | cksum
printf "For truth is always strange. Stranger than fiction. Lord Byron" | \
    pbmtext -builtin fixed | cksum


text="The quick brown fog jumps over the lazy docs."

# Test 2:
echo "Test 2"

for flags in "" "-nomargins" "-builtin fixed"
do
echo ${text} | pbmtext ${flags} | cksum
done

temp_pbm=${tmpdir}/temp.pbm


# Test 3: Check if image is produced unaltered when -width is specified
# Should print 1028079028 967 twice, then 1305436978 1018 twice
echo "Test 3"

for flags in "" "-builtin fixed"
do
pbmtext ${flags} ${text} | tee ${temp_pbm} | cksum
width1=`pamfile ${temp_pbm} | awk '$2=="PBM" && NR==1 {w=$4}; END {print w}' `
width2=`pbmtext ${flags} ${text} --dry-run | cut -d " " -f 1`

if [ ${width1} -eq ${width2} ]; then
    pbmtext ${flags} -width=${width1} ${text} | cksum
else
    echo ${width1} ${width2}
fi
rm ${temp_pbm}
done


# Test 4: Should print 1647614653 2027 three times
# Note: backslashes inserted in 3 locations in the rectangle to make
# possible input as a here document.

fontRectangle_txt=${tmpdir}/fontRectangle.txt
font_pbm=${tmpdir}/font.pbm

cat > ${fontRectangle_txt} << EOF
M ",/^_[\`jpqy| M

/  !"#$%&'()*+ /
< ,-./01234567 <
> 89:;<=>?@ABC >
@ DEFGHIJKLMNO @
_ PQRSTUVWXYZ[ _
{ \\]^_\`abcdefg {
} hijklmnopqrs }
~ tuvwxyz{|}~  ~

M ",/^_[\`jpqy| M
EOF

echo "Test 4"

pbmtext -dump-sheet -builtin fixed | tee ${font_pbm}      | cksum
cat ${fontRectangle_txt} | pbmtext -nom -builtin fixed    | cksum
cat ${fontRectangle_txt} | pbmtext -nom -font ${font_pbm} | cksum
rm ${fontRectangle_txt}


# Test 5: Print all characters defined in the built-in bdf font
echo "Test 5"

# One long row
# Should print 3233136020 4535
LC_ALL=C \
awk 'BEGIN { for (i=32; i<=126;++i) printf("%c",i);
             for (i=160;i<=255;++i) printf("%c",i); }' | \
    pbmtext -builtin bdf | cksum

# One tall column
# Should print 1216262214 5711
LC_ALL=C \
awk 'BEGIN { for (i=32; i<=126;++i) printf("%c\n",i);
             for (i=160;i<=255;++i) printf("%c\n",i); }' | \
    pbmtext -nomargins -builtin bdf | cksum


# Test 6

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

echo "Test 6 Invalid"

test_out=${tmpdir}/test_out

pbmtext -font=testgrid.pbm foo > ${test_out} || \
  printf "Expected failure 1 "
  test -s ${test_out} && echo "unexpected output" || echo "(no output)"
  rm -f ${test_out}

pbmtext -font=testimg.ppm  foo > ${test_out} || \
  printf "Expected failure 2 "
  test -s ${test_out} && echo "unexpected output" || echo "(no output)"
  rm -f ${test_out}

pbmtext -builtin=void      foo > ${test_out} || \
  printf "Expected failure 3 "
  test -s ${test_out} && echo "unexpected output" || echo "(no output)"
  rm -f ${test_out}

pbmtext -font=${font_pbm} -builtin=fixed foo > ${test_out}  || \
  printf "Expected failure 4 "
  test -s ${test_out} && echo "unexpected output" || echo "(no output)"
  rm -f ${test_out}

pbmtext -dry-run    -text-dump  foo > ${test_out} || \
  printf "Expected failure 5 "
  test -s ${test_out} && echo "unexpected output" || echo "(no output)"
  rm -f ${test_out}

pbmtext -dump-sheet -text-dump  foo > ${test_out} || \
  printf "Expected failure 6 "
  test -s ${test_out} && echo "unexpected output" || echo "(no output)"
  rm -f ${test_out}

pbmtext -dry-run    -dump-sheet foo > ${test_out} || \
  printf "Expected failure 7 "
  test -s ${test_out} && echo "unexpected output" || echo "(no output)"
  rm -f ${test_out}

pbmtext -wchar foo > ${test_out} || \
  printf "Expected failure 8 "
  test -s ${test_out} && echo "unexpected output" || echo "(no output)"
  rm -f ${test_out}

rm ${font_pbm}

# Test 7
# Text to render in very long single line

echo "Test 7"

long_txt=${tmpdir}/long.txt

head -c 4999 /dev/zero | tr '\0' 'A' > ${long_txt}
awk '{print "text length:", length($0)}' ${long_txt}

pbmtext -nomargins -builtin fixed `cat ${long_txt}`  | cksum
cat ${long_txt} | pbmtext -nomargins -builtin fixed  | cksum

echo "Test 8 Invalid"

printf "z" >> ${long_txt}
awk '{print "text length:", length($0)}' ${long_txt}

echo 1>&2
echo "Test input text which exceeds length limit" 1>&2
echo "Error messages should appear below the line." 1>&2
echo "-----------------------------------------------------------" 1>&2

pbmtext -nomargins -builtin fixed `cat ${long_txt}` > ${test_out}  || \
  printf "Expected failure 1 "
  test -s ${test_out} && echo "unexpected output" || echo "(no output)"
  rm -f ${test_out}

cat ${long_txt} | pbmtext -nomargins -builtin fixed > ${test_out}  || \
  printf "Expected failure 2 "
  test -s ${test_out} && echo "unexpected output" || echo "(no output)"
  rm -f ${test_out}

cat ${long_txt} | \
  LC_ALL=C pbmtext -nomargins -builtin fixed -wchar > ${test_out}  || \
  printf "Expected failure 3 "
  test -s ${test_out} && echo "unexpected output" || echo "(no output)"
  rm -f ${test_out}

rm ${long_txt}