tests.acceptance: adds simple migration test

# Migration test

#

# Copyright (c) 2019 Red Hat, Inc.

#

# Authors:

#  Cleber Rosa <crosa@redhat.com>

#  Caio Carrara <ccarrara@redhat.com>

#

# This work is licensed under the terms of the GNU GPL, version 2 or

# later.  See the COPYING file in the top-level directory.

from avocado_qemu import Test

from avocado.utils import network

from avocado.utils import wait

class Migration(Test):

    """

    :avocado: enable

    """

    timeout = 10

    @staticmethod

    def migration_finished(vm):

        return vm.command('query-migrate')['status'] in ('completed', 'failed')

    def _get_free_port(self):

        port = network.find_free_port()

        if port is None:

            self.cancel('Failed to find a free port')

        return port

    def test_migration_with_tcp_localhost(self):

        source_vm = self.get_vm()

        dest_uri = 'tcp:localhost:%u' % self._get_free_port()

        dest_vm = self.get_vm('-incoming', dest_uri)

        dest_vm.launch()

        source_vm.launch()

        source_vm.qmp('migrate', uri=dest_uri)

        wait.wait_for(

            self.migration_finished,

            timeout=self.timeout,

            step=0.1,

            args=(source_vm,)

        )

        self.assertEqual(dest_vm.command('query-migrate')['status'], 'completed')

        self.assertEqual(source_vm.command('query-migrate')['status'], 'completed')

        self.assertEqual(dest_vm.command('query-status')['status'], 'running')

        self.assertEqual(source_vm.command('query-status')['status'], 'postmigrate')