# vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright (c) 2011 Citrix Systems, Inc.
# Copyright 2011 OpenStack LLC.
#
#    Licensed under the Apache License, Version 2.0 (the "License"); you may
#    not use this file except in compliance with the License. You may obtain
#    a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#    License for the specific language governing permissions and limitations
#    under the License.

"""
Test suite for VMWareAPI.
"""

from nova.compute import power_state
from nova import context
from nova import db
from nova import exception
from nova import flags
from nova import test
from nova.tests.glance import stubs as glance_stubs
from nova.tests.vmwareapi import db_fakes
from nova.tests.vmwareapi import stubs
from nova.virt.vmwareapi import fake as vmwareapi_fake
from nova.virt import vmwareapi_conn


FLAGS = flags.FLAGS


class VMWareAPIVMTestCase(test.TestCase):
    """Unit tests for Vmware API connection calls."""

    def setUp(self):
        super(VMWareAPIVMTestCase, self).setUp()
        self.context = context.RequestContext('fake', 'fake', is_admin=False)
        self.flags(vmwareapi_host_ip='test_url',
                   vmwareapi_host_username='test_username',
                   vmwareapi_host_password='test_pass')
        self.user_id = 'fake'
        self.project_id = 'fake'
        self.context = context.RequestContext(self.user_id, self.project_id)
        vmwareapi_fake.reset()
        db_fakes.stub_out_db_instance_api(self.stubs)
        stubs.set_stubs(self.stubs)
        glance_stubs.stubout_glance_client(self.stubs)
        self.conn = vmwareapi_conn.get_connection(False)
        # NOTE(vish): none of the network plugging code is actually
        #             being tested
        self.network_info = [({'bridge': 'fa0',
                               'id': 0,
                               'vlan': None,
                               'bridge_interface': None,
                               'injected': True},
                          {'broadcast': '192.168.0.255',
                           'dns': ['192.168.0.1'],
                           'gateway': '192.168.0.1',
                           'gateway_v6': 'dead:beef::1',
                           'ip6s': [{'enabled': '1',
                                     'ip': 'dead:beef::dcad:beff:feef:0',
                                           'netmask': '64'}],
                           'ips': [{'enabled': '1',
                                    'ip': '192.168.0.100',
                                    'netmask': '255.255.255.0'}],
                           'label': 'fake',
                           'mac': 'DE:AD:BE:EF:00:00',
                           'rxtx_cap': 3})]

        self.image = {
            'id': 'c1c8ce3d-c2e0-4247-890c-ccf5cc1c004c',
            'disk_format': 'vhd',
            'size': 512,
        }

    def tearDown(self):
        super(VMWareAPIVMTestCase, self).tearDown()
        vmwareapi_fake.cleanup()

    def _create_instance_in_the_db(self):
        values = {'name': 1,
                  'id': 1,
                  'project_id': self.project_id,
                  'user_id': self.user_id,
                  'image_ref': "1",
                  'kernel_id': "1",
                  'ramdisk_id': "1",
                  'mac_address': "de:ad:be:ef:be:ef",
                  'instance_type': 'm1.large',
                  }
        self.instance = db.instance_create(None, values)

    def _create_vm(self):
        """Create and spawn the VM."""
        self._create_instance_in_the_db()
        self.type_data = db.instance_type_get_by_name(None, 'm1.large')
        self.conn.spawn(self.context, self.instance, self.image,
                        self.network_info)
        self._check_vm_record()

    def _check_vm_record(self):
        """
        Check if the spawned VM's properties correspond to the instance in
        the db.
        """
        instances = self.conn.list_instances()
        self.assertEquals(len(instances), 1)

        # Get Nova record for VM
        vm_info = self.conn.get_info({'name': 1})

        # Get record for VM
        vms = vmwareapi_fake._get_objects("VirtualMachine")
        vm = vms[0]

        # Check that m1.large above turned into the right thing.
        mem_kib = long(self.type_data['memory_mb']) << 10
        vcpus = self.type_data['vcpus']
        self.assertEquals(vm_info['max_mem'], mem_kib)
        self.assertEquals(vm_info['mem'], mem_kib)
        self.assertEquals(vm.get("summary.config.numCpu"), vcpus)
        self.assertEquals(vm.get("summary.config.memorySizeMB"),
                          self.type_data['memory_mb'])

        # Check that the VM is running according to Nova
        self.assertEquals(vm_info['state'], power_state.RUNNING)

        # Check that the VM is running according to vSphere API.
        self.assertEquals(vm.get("runtime.powerState"), 'poweredOn')

    def _check_vm_info(self, info, pwr_state=power_state.RUNNING):
        """
        Check if the get_info returned values correspond to the instance
        object in the db.
        """
        mem_kib = long(self.type_data['memory_mb']) << 10
        self.assertEquals(info["state"], pwr_state)
        self.assertEquals(info["max_mem"], mem_kib)
        self.assertEquals(info["mem"], mem_kib)
        self.assertEquals(info["num_cpu"], self.type_data['vcpus'])

    def test_list_instances(self):
        instances = self.conn.list_instances()
        self.assertEquals(len(instances), 0)

    def test_list_instances_1(self):
        self._create_vm()
        instances = self.conn.list_instances()
        self.assertEquals(len(instances), 1)

    def test_spawn(self):
        self._create_vm()
        info = self.conn.get_info({'name': 1})
        self._check_vm_info(info, power_state.RUNNING)

    def test_snapshot(self):
        self._create_vm()
        info = self.conn.get_info({'name': 1})
        self._check_vm_info(info, power_state.RUNNING)
        self.conn.snapshot(self.context, self.instance, "Test-Snapshot")
        info = self.conn.get_info({'name': 1})
        self._check_vm_info(info, power_state.RUNNING)

    def test_snapshot_non_existent(self):
        self._create_instance_in_the_db()
        self.assertRaises(exception.InstanceNotFound, self.conn.snapshot,
                          self.context, self.instance, "Test-Snapshot")

    def test_reboot(self):
        self._create_vm()
        info = self.conn.get_info({'name': 1})
        self._check_vm_info(info, power_state.RUNNING)
        reboot_type = "SOFT"
        self.conn.reboot(self.instance, self.network_info, reboot_type)
        info = self.conn.get_info({'name': 1})
        self._check_vm_info(info, power_state.RUNNING)

    def test_reboot_non_existent(self):
        self._create_instance_in_the_db()
        self.assertRaises(exception.InstanceNotFound, self.conn.reboot,
                          self.instance, self.network_info, 'SOFT')

    def test_reboot_not_poweredon(self):
        self._create_vm()
        info = self.conn.get_info({'name': 1})
        self._check_vm_info(info, power_state.RUNNING)
        self.conn.suspend(self.instance)
        info = self.conn.get_info({'name': 1})
        self._check_vm_info(info, power_state.PAUSED)
        self.assertRaises(exception.InstanceRebootFailure, self.conn.reboot,
                          self.instance, self.network_info, 'SOFT')

    def test_suspend(self):
        self._create_vm()
        info = self.conn.get_info({'name': 1})
        self._check_vm_info(info, power_state.RUNNING)
        self.conn.suspend(self.instance)
        info = self.conn.get_info({'name': 1})
        self._check_vm_info(info, power_state.PAUSED)

    def test_suspend_non_existent(self):
        self._create_instance_in_the_db()
        self.assertRaises(exception.InstanceNotFound, self.conn.suspend,
                          self.instance)

    def test_resume(self):
        self._create_vm()
        info = self.conn.get_info({'name': 1})
        self._check_vm_info(info, power_state.RUNNING)
        self.conn.suspend(self.instance)
        info = self.conn.get_info({'name': 1})
        self._check_vm_info(info, power_state.PAUSED)
        self.conn.resume(self.instance)
        info = self.conn.get_info({'name': 1})
        self._check_vm_info(info, power_state.RUNNING)

    def test_resume_non_existent(self):
        self._create_instance_in_the_db()
        self.assertRaises(exception.InstanceNotFound, self.conn.resume,
                          self.instance)

    def test_resume_not_suspended(self):
        self._create_vm()
        info = self.conn.get_info({'name': 1})
        self._check_vm_info(info, power_state.RUNNING)
        self.assertRaises(exception.InstanceResumeFailure, self.conn.resume,
                          self.instance)

    def test_get_info(self):
        self._create_vm()
        info = self.conn.get_info({'name': 1})
        self._check_vm_info(info, power_state.RUNNING)

    def test_destroy(self):
        self._create_vm()
        info = self.conn.get_info({'name': 1})
        self._check_vm_info(info, power_state.RUNNING)
        instances = self.conn.list_instances()
        self.assertEquals(len(instances), 1)
        self.conn.destroy(self.instance, self.network_info)
        instances = self.conn.list_instances()
        self.assertEquals(len(instances), 0)

    def test_destroy_non_existent(self):
        self._create_instance_in_the_db()
        self.assertEquals(self.conn.destroy(self.instance, self.network_info),
                          None)

    def test_pause(self):
        pass

    def test_unpause(self):
        pass

    def test_diagnostics(self):
        pass

    def test_get_console_output(self):
        pass