#!/usr/bin/env bash
# nbdkit
# Copyright Red Hat
#
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# modification, are permitted provided that the following conditions are
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#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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#
# * Neither the name of Red Hat nor the names of its contributors may be
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#
# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.

# Test swab filter.

source ./functions.sh
set -e
set -x

requires_nbdsh_uri

sock=$(mktemp -u /tmp/nbdkit-test-sock.XXXXXX)
files="$sock swab-16r.pid"
rm -f $files
cleanup_fn rm -f $files

start_nbdkit -P swab-16r.pid -U $sock --filter=swab pattern size=$((128*1024))

nbdsh --connect "nbd+unix://?socket=$sock" \
      -c '
# Read back part of the pattern and check it is byte-swapped.
# Original pattern is:
# 00 00 00 00 00 00 ff f8
# 00 00 00 00 00 01 00 00
# 00 00 00 00 00 01 00 08
# 00 00 00 00 00 01 00 10
# Expected output is:
# 00 00 00 00 00 00 f8 ff
# 00 00 00 00 01 00 00 00
# 00 00 00 00 01 00 08 00
# 00 00 00 00 01 00 10 00

buf = h.pread(32, 65528)
assert buf == bytearray([0, 0, 0, 0, 0, 0, 0xf8, 0xff,
                         0, 0, 0, 0, 1, 0, 0,    0,
                         0, 0, 0, 0, 1, 0, 8,    0,
                         0, 0, 0, 0, 1, 0, 0x10, 0])
'
