tests/test-rate.sh

   1 #!/usr/bin/env bash
   2 # nbdkit
   3 # Copyright (C) 2018-2019 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 qemu-img --version
  38
  39 files="rate.img rate.time rate.err"
  40 rm -f $files
  41 cleanup_fn rm -f $files
  42
  43 # This should take no less than 20 seconds to run:
  44 #   (8 * 25 * 1024 * 1024) / (10 * 1024 * 1024) = 20
  45 # but because the bucket is full at the start the filter will
  46 # burst for a couple of seconds to begin with, therefore the
  47 # expected minimum time is more like 18-19 seconds.
  48
  49 # We are using the bash time builtin, so setting TIMEFORMAT will
  50 # control the output format of the time builtin.  For strange use of
  51 # { ; } here, see: https://stackoverflow.com/a/13356654
  52 set +x
  53 { TIMEFORMAT="%0R" ; time nbdkit -U - --filter=rate pattern 25M rate=10M --run 'qemu-img convert -p $nbd rate.img' 2>rate.err ; } 2>rate.time
  54 set -x
  55
  56 cat rate.err ||:
  57
  58 seconds="$( cat rate.time )"
  59 if [ "$seconds" -lt 18 ]; then
  60     echo "$0: rate filter failed: command took $seconds seconds, expected about 20"
  61     exit 1
  62 fi