tests/test-null-extents.sh

   1 #!/usr/bin/env bash
   2 # nbdkit
   3 # Copyright (C) 2018-2020 Red Hat Inc.
   4 #
   5 # Redistribution and use in source and binary forms, with or without
   6 # modification, are permitted provided that the following conditions are
   7 # met:
   8 #
   9 # * Redistributions of source code must retain the above copyright
  10 # notice, this list of conditions and the following disclaimer.
  11 #
  12 # * Redistributions in binary form must reproduce the above copyright
  13 # notice, this list of conditions and the following disclaimer in the
  14 # documentation and/or other materials provided with the distribution.
  15 #
  16 # * Neither the name of Red Hat nor the names of its contributors may be
  17 # used to endorse or promote products derived from this software without
  18 # specific prior written permission.
  19 #
  20 # THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
  21 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  22 # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  23 # PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
  24 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  27 # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  28 # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  29 # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  30 # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31 # SUCH DAMAGE.
  32
  33 source ./functions.sh
  34 set -e
  35 set -x
  36
  37 requires_run
  38 requires jq --version
  39 requires qemu-img --version
  40 requires qemu-img map --help
  41
  42 out="test-null-extents.out"
  43 expected="test-null-extents.expected"
  44 files="$out $expected"
  45 rm -f $files
  46 cleanup_fn rm -f $files
  47
  48 do_test ()
  49 {
  50     # We use jq to normalize the output and convert it to plain text.
  51     nbdkit -U - \
  52            null "$1" \
  53            --run 'qemu-img map -f raw --output=json $nbd' |
  54         jq -c '.[] | {start:.start, length:.length, data:.data, zero:.zero}' \
  55            > $out
  56     if ! cmp $out $expected; then
  57         echo "$0: output did not match expected data"
  58         echo "expected:"
  59         cat $expected
  60         echo "output:"
  61         cat $out
  62         exit 1
  63     fi
  64 }
  65
  66 # Non-zero sized null disk.
  67 cat > $expected <<'EOF'
  68 {"start":0,"length":65536,"data":false,"zero":true}
  69 EOF
  70 do_test 64K
  71
  72 # Zero sized null disk.
  73 cat > $expected <<'EOF'
  74 {"start":0,"length":0,"data":false,"zero":false}
  75 EOF
  76 do_test 0