diff options
Diffstat (limited to 'test/gif-roundtrip.test')
| -rwxr-xr-x | test/gif-roundtrip.test | 90 |
1 files changed, 43 insertions, 47 deletions
diff --git a/test/gif-roundtrip.test b/test/gif-roundtrip.test index 1e6c7760..13ff595e 100755 --- a/test/gif-roundtrip.test +++ b/test/gif-roundtrip.test @@ -7,7 +7,8 @@ tmpdir=${tmpdir:-/tmp} # Test 1. Break up input image into three monochrome planes, # maxval 255. Transform each plane to gif and back to pgm. # Reassemble the planes. Result should be identical to input. -# Should print 1926073387 101484 + +echo "Test 1. Should print 1926073387 101484" test_ppm=${tmpdir}/testimg.ppm @@ -29,13 +30,11 @@ pamtogif ${test_blu} | giftopnm | \ rm ${test_ppm} ${test_grn} ${test_blu} ${out_red} ${out_grn} - -# Test 2. Should produce 1571496937 33838 -# which is the result of cksum testimg.red -# five times +echo "Test 2. Should produce 1571496937 33838 six times" test_gif=${tmpdir}/testimg.gif +cat ${test_red} | cksum pamtogif ${test_red} | giftopnm | cksum pamtogif -interlace ${test_red} | giftopnm | cksum pamtogif -noclear ${test_red} | giftopnm | cksum @@ -46,22 +45,23 @@ echo "junk" >> ${test_gif} && \ rm ${test_gif} ${test_red} +echo "Test 3. Should produce 281226646 481 six times" +# maze.pbm is too small for -noclear to take effect -# Test 3. Should produce 2425386270 41 five times. -# testgrid.pbm is too small for -noclear to take effect - -pamtogif testgrid.pbm | giftopnm | cksum -pamtogif -nolzw testgrid.pbm | giftopnm | cksum -pamtogif -transparent=black testgrid.pbm | giftopnm | cksum -pamtogif -alpha=testgrid.pbm testgrid.pbm | giftopnm | cksum -pamtogif -transparent=white testgrid.pbm | giftopnm -alpha=- | \ +cat maze.pbm | cksum +pamtogif maze.pbm | giftopnm | cksum +pamtogif -nolzw maze.pbm | giftopnm | cksum +pamtogif -transparent=black maze.pbm | giftopnm | cksum +pamtogif -alpha=maze.pbm maze.pbm | giftopnm | cksum +pamtogif -transparent=white maze.pbm | giftopnm -alpha=- | \ pnminvert | cksum # Test 4. # In this gif file the code length changes after the last image data. # Image data: 3 bits, end code 4 bits. -# Should produce P1 4 1 0 1 0 1 + +echo "Test 4. Should produce P1 4 1 0101" pbmmake -g 4 1 | \ pamtogif -verbose | giftopnm -plain | \ @@ -71,25 +71,18 @@ echo "" # Test 5. # Test whether saturated code tables are handled correctly. -# Test input images which most use up the string code table or +# Test input images which use up the string code table or # come close to doing so. -# Should produce: -# 4030 0 , 4030 0 -# 4031 0 , 4031 0 -# 4097 0 , 4097 0 -# 238 0 , 238 0 -# 239 0 , 239 0 -# 240 0 , 240 0 -# 241 0 , 241 0 -# 255 0 , 255 0 -# 256 0 , 256 0 -# 257 0 , 257 0 -test4097_pgm=${tmpdir}/testimg4097.pgm +echo "Test 5. Should produce: N : 0 0 0 0 : 0 , N : 0 0 0 0 : 0" +echo "(N=238, 239, 240, 241, 255, 256, 257, 4030, 4031, 4097)" + test_pgm=${tmpdir}/testimg.pgm -# The following awk script produces a PGM file with no repeated sequences. +# The following awk scripts produce a PGM file with no repeated +# sequences. Obviously this cannot be compressed at all; the codes +# are consumed without ever being used. # Here is a smaller example with the same property: # P2 # 8 8 @@ -103,7 +96,9 @@ test_pgm=${tmpdir}/testimg.pgm # 3 6 3 7 4 5 4 6 # 4 7 5 6 5 7 6 7 -maxval=63 +test257_pgm=${tmpdir}/testimg257.pgm + +maxval=15 awk -v maxval=${maxval} 'BEGIN \ { print "P2" print "1 "(maxval+1) * (maxval+1) +1 @@ -115,26 +110,25 @@ awk -v maxval=${maxval} 'BEGIN \ for (j=i+1; j<=maxval; ++j) {print i; print j } print 0 -}' > ${test4097_pgm} +}' > ${test257_pgm} -for size in 4030 4031 4097 +for size in 238 239 240 241 255 256 257 do - pamcut -height ${size} ${test4097_pgm} > ${test_pgm} && + pamcut -height=${size} ${test257_pgm} > ${test_pgm} && pamtogif -verbose ${test_pgm} | giftopnm | pamdepth ${maxval} | \ cmp - ${test_pgm} - # pamdepth ${maxval} is necessary because - # giftopnm output is maxval 255 - echo -n ${size} ":" ${PIPESTATUS[@]} ":" $? ", " - pamtogif -nolzw ${test_pgm} | giftopnm | pamdepth ${maxval} | \ + printf "${size} : ${PIPESTATUS[*]} : $? , " + pamtogif -nolzw -verbose ${test_pgm} | giftopnm | pamdepth ${maxval} | \ cmp - ${test_pgm} - echo ${size} ":" ${PIPESTATUS[@]} ":" $? + printf "${size} : ${PIPESTATUS[*]} : $?\n" rm ${test_pgm} done -rm ${test4097_pgm} -test257_pgm=${tmpdir}/testimg257.pgm +rm ${test257_pgm} -maxval=15 +test4097_pgm=${tmpdir}/testimg4097.pgm + +maxval=63 awk -v maxval=${maxval} 'BEGIN \ { print "P2" print "1 "(maxval+1) * (maxval+1) +1 @@ -146,18 +140,20 @@ awk -v maxval=${maxval} 'BEGIN \ for (j=i+1; j<=maxval; ++j) {print i; print j } print 0 -}' > ${test257_pgm} +}' > ${test4097_pgm} -for size in 238 239 240 241 255 256 257 +for size in 4030 4031 4097 do - pamcut -height=${size} ${test257_pgm} > ${test_pgm} && + pamcut -height ${size} ${test4097_pgm} > ${test_pgm} && pamtogif -verbose ${test_pgm} | giftopnm | pamdepth ${maxval} | \ cmp - ${test_pgm} - echo -n ${size} ":" ${PIPESTATUS[@]} ":" $? ", " - pamtogif -nolzw -verbose ${test_pgm} | giftopnm | pamdepth ${maxval} | \ + # pamdepth ${maxval} is necessary because + # giftopnm output is maxval 255 + printf "${size} : ${PIPESTATUS[*]} : $? , " + pamtogif -nolzw ${test_pgm} | giftopnm | pamdepth ${maxval} | \ cmp - ${test_pgm} - echo ${size} ":" ${PIPESTATUS[@]} ":" $? + printf "${size} : ${PIPESTATUS[*]} : $?\n" rm ${test_pgm} done -rm ${test257_pgm} +rm ${test4097_pgm} |