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libvirt/tests/virsh-optparse
Eric Blake 85d2810823 snapshot: tweak snapshot-create-as diskspec docs
With this patch, it is hopefully a bit more obvious that for
snapshot-create-as, a literal '--diskspec' is mandatory if name
or description was omitted, but optional if all earlier options
were provided.

These all denote two diskspecs and a description:
virsh snapshot-create-as dom name desc vda vdb
virsh snapshot-create-as dom name desc --diskspec vda --diskspec vdb
virsh snapshot-create-as dom name desc --diskspec vda vdb
virsh snapshot-create-as dom name desc vda --diskspec vdb
virsh snapshot-create-as dom --diskspec vda --diskspec vdb name desc

This gives two diskspecs but no description:
virsh snapshot-create-as dom name --diskspec vda --diskspec vdb

And this treats 'vda' as the description, with only one diskspec:
virsh snapshot-create-as dom name vda vdb

The help output now shows:
    snapshot-create-as <domain> [<name>] [<description>] [--print-xml] [--no-metadata] [--halt] [--disk-only] [[--diskspec] <string>]...

I also checked the help output for echo and send-key, which are two
other variants of argv commands.

* tools/virsh.pod (snapshot-create-as): Document when a literal
--diskspec must preceed a diskspec argument.
* tools/virsh.c (vshCmddefHelp): Update help output for argv when
naming the option is useful.
(vshCmddefGetData): Fix logic on when argv was seen.
* tests/virsh-optparse: Add tests to avoid regressions.
2011-09-15 16:18:12 -06:00

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#!/bin/sh
# Ensure that virsh option parsing doesn't regress
# Copyright (C) 2011 Red Hat, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
: ${srcdir=$(pwd)}
: ${abs_top_srcdir=$(pwd)/..}
: ${abs_top_builddir=$(pwd)/..}
# If $abs_top_builddir/tools is not early in $PATH, put it there,
# so that we can safely invoke "virsh" simply with its name.
case $PATH in
$abs_top_builddir/tools/src:$abs_top_builddir/tools:*) ;;
$abs_top_builddir/tools:*) ;;
*) PATH=$abs_top_builddir/tools:$PATH; export PATH ;;
esac
if test "$VERBOSE" = yes; then
set -x
virsh --version
fi
. "$srcdir/test-lib.sh"
cat <<\EOF > exp-out || framework_failure
setvcpus: <domain> trying as domain NAME
setvcpus: count(optdata): 2
setvcpus: domain(optdata): test
setvcpus: found option <domain>: test
EOF
fail=0
test_url=test:///default
for args in \
'test 2' \
'--domain test 2' \
'--domain=test 2' \
'test --count 2' \
'test --count=2' \
'--domain test --count 2' \
'--domain=test --count 2' \
'--domain test --count=2' \
'--domain=test --count=2' \
'--count 2 --domain test' \
'--count 2 --domain=test' \
'--count=2 --domain test' \
'--count=2 --domain=test' \
'--count 2 test' \
'--count=2 test' \
; do
virsh -d0 -c $test_url setvcpus $args >out 2>>err || fail=1
LC_ALL=C sort out | compare - exp-out || fail=1
done
# Another complex parsing example
cat <<\EOF > exp-out || framework_failure
<domainsnapshot>
<description>1&lt;2</description>
<disks>
<disk name='vda' snapshot='external'>
<source file='a&amp;b,c'/>
</disk>
<disk name='vdb'/>
</disks>
</domainsnapshot>
EOF
virsh -q -c $test_url snapshot-create-as --print-xml test \
--diskspec 'vda,file=a&b,,c,snapshot=external' --description '1<2' \
--diskspec vdb >out 2>>err || fail=1
compare out exp-out || fail=1
cat <<\EOF > exp-out || framework_failure
<domainsnapshot>
<name>name</name>
<description>vda</description>
<disks>
<disk name='vdb'/>
</disks>
</domainsnapshot>
EOF
virsh -q -c $test_url snapshot-create-as --print-xml test name vda vdb \
>out 2>>err || fail=1
compare out exp-out || fail=1
cat <<\EOF > exp-out || framework_failure
<domainsnapshot>
<name>name</name>
<description>desc</description>
<disks>
<disk name='vda'/>
<disk name='vdb'/>
</disks>
</domainsnapshot>
EOF
for args in \
'test name desc vda vdb' \
'test name desc --diskspec vda vdb' \
'test name desc --diskspec vda --diskspec vdb' \
'test name desc vda vdb' \
'test --diskspec vda name --diskspec vdb desc' \
'--description desc --name name --domain test vda vdb' \
; do
virsh -q -c $test_url snapshot-create-as --print-xml $args \
>out 2>>err || fail=1
compare out exp-out || fail=1
done
test -s err && fail=1
(exit $fail); exit $fail