tests/test_compress.sh

   1 #!/bin/sh
   2 # SPDX-License-Identifier: 0BSD
   3
   4 ###############################################################################
   5 #
   6 # Author: Lasse Collin
   7 #
   8 ###############################################################################
   9
  10 # Mandatory argument:
  11 # $1 = test filename: compress_generated_<foo> or compress_prepared_<foo>
  12 #
  13 # Optional argument:
  14 # $2 = directory of the xz and xzdec executables
  15
  16 XZ=${2:-../src/xz}/xz
  17 XZDEC=${2:-../src/xzdec}/xzdec
  18
  19 # If xz wasn't built, this test is skipped.
  20 if test ! -x "$XZ"; then
  21         echo "xz was not built, skipping this test."
  22         exit 77
  23 fi
  24
  25 # xzdec isn't mandatory for this script.
  26 test -x "$XZDEC" || XZDEC=
  27
  28 # If compression or decompression support is missing, this test is skipped.
  29 # This isn't perfect as if only some compressors or decompressors are disabled
  30 # then this script can still fail because for now this doesn't check the
  31 # availability of each filter.
  32 if test ! -f ../config.h ; then
  33         :
  34 elif grep 'define HAVE_ENCODERS' ../config.h > /dev/null \
  35                 && grep 'define HAVE_DECODERS' ../config.h > /dev/null ; then
  36         :
  37 else
  38         echo "Compression or decompression support is disabled, skipping this test."
  39         exit 77
  40 fi
  41
  42 # Find out if our shell supports functions.
  43 eval 'unset foo ; foo() { return 42; } ; foo'
  44 if test $? != 42 ; then
  45         echo "/bin/sh doesn't support functions, skipping this test."
  46         exit 77
  47 fi
  48
  49 test_xz() {
  50         if $XZ -c "$@" "$FILE" > "$TMP_COMP"; then
  51                 :
  52         else
  53                 echo "Compressing failed: $* $FILE"
  54                 exit 1
  55         fi
  56
  57         if $XZ -cd "$TMP_COMP" > "$TMP_UNCOMP" ; then
  58                 :
  59         else
  60                 echo "Decompressing failed: $* $FILE"
  61                 exit 1
  62         fi
  63
  64         if cmp "$TMP_UNCOMP" "$FILE" ; then
  65                 :
  66         else
  67                 echo "Decompressed file does not match" \
  68                                 "the original: $* $FILE"
  69                 exit 1
  70         fi
  71
  72         if test -n "$XZDEC" ; then
  73                 if $XZDEC "$TMP_COMP" > "$TMP_UNCOMP" ; then
  74                         :
  75                 else
  76                         echo "Decompressing failed: $* $FILE"
  77                         exit 1
  78                 fi
  79
  80                 if cmp "$TMP_UNCOMP" "$FILE" ; then
  81                         :
  82                 else
  83                         echo "Decompressed file does not match" \
  84                                         "the original: $* $FILE"
  85                         exit 1
  86                 fi
  87         fi
  88 }
  89
  90 # Set memory usage limit for xz. xzdec has no memory usage limiter.
  91 # Force single-threaded mode as the test files are small
  92 # (so more than one thread wouldn't be used anyway) and
  93 # the tests are usually run in parallel.
  94 XZ="$XZ --memlimit-compress=48MiB --memlimit-decompress=5MiB \
  95                 --no-adjust --threads=1"
  96
  97 # Create the required input file if needed.
  98 #
  99 # Derive temporary filenames for compressed and uncompressed outputs
 100 # from the input filename. This is needed when multiple tests are
 101 # run in parallel.
 102 FILE=$1
 103 TMP_COMP="tmp_comp_$FILE"
 104 TMP_UNCOMP="tmp_uncomp_$FILE"
 105
 106 case $FILE in
 107         # compress_generated files will be created in the build directory
 108         # in the /tests/ sub-directory.
 109         compress_generated_*)
 110                 if ./create_compress_files "$FILE" ; then
 111                         :
 112                 else
 113                         rm -f "$FILE"
 114                         echo "Failed to create the file '$FILE'."
 115                         exit 1
 116                 fi
 117                 ;;
 118         # compress_prepared files exist in the source directory since they
 119         # do not need to be copied or regenerated.
 120         compress_prepared_*)
 121                 FILE="$srcdir/$FILE"
 122                 ;;
 123         '')
 124                 echo "No test file was specified."
 125                 exit 1
 126                 ;;
 127 esac
 128
 129 # Remove temporary now (in case they are something weird), and on exit.
 130 rm -f "$TMP_COMP" "$TMP_UNCOMP"
 131 trap 'rm -f "$TMP_COMP" "$TMP_UNCOMP"' 0
 132
 133 # Compress and decompress the file with various filter configurations.
 134 #
 135 # Don't test with empty arguments; it breaks some ancient
 136 # proprietary /bin/sh versions due to $@ used in test_xz().
 137 test_xz -1
 138 test_xz -2
 139 test_xz -3
 140 test_xz -4
 141
 142 test_filter()
 143 {
 144         if test -f ../config.h ; then
 145                 grep "define HAVE_ENCODER_$1 1" ../config.h > /dev/null \
 146                         || return
 147                 grep "define HAVE_DECODER_$1 1" ../config.h > /dev/null \
 148                         || return
 149         fi
 150         shift
 151         test_xz --filters="$* lzma2:dict=64KiB,nice=32,mode=fast"
 152 }
 153
 154 test_filter DELTA delta:dist=1
 155 test_filter DELTA delta:dist=4
 156 test_filter DELTA delta:dist=256
 157 test_filter X86 x86
 158 test_filter POWERPC powerpc
 159 test_filter IA64 ia64
 160 test_filter ARM arm
 161 test_filter ARMTHUMB armthumb
 162 test_filter ARM64 arm64
 163 test_filter SPARC sparc
 164 test_filter RISCV riscv
 165
 166 exit 0