Synnefo » snf-ganeti

#!/usr/bin/python

#

# Copyright (C) 2006, 2007, 2008, 2010, 2012, 2013 Google 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, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

# 02110-1301, USA.

"""Script for unittesting the objects module"""

import copy

import unittest

from ganeti import constants

from ganeti import objects

from ganeti import errors

import testutils

class SimpleObject(objects.ConfigObject):

  __slots__ = ["a", "b"]

class TestDictState(unittest.TestCase):

  """Simple dict tansformation tests"""

  def testSimpleObjectToDict(self):

    o1 = SimpleObject(a="1")

    self.assertEquals(o1.ToDict(), {"a": "1"})

    self.assertEquals(o1.__getstate__(), {"a": "1"})

    self.assertEquals(o1.__getstate__(), o1.ToDict())

    o1.a = 2

    o1.b = 5

    self.assertEquals(o1.ToDict(), {"a": 2, "b": 5})

    o2 = SimpleObject.FromDict(o1.ToDict())

    self.assertEquals(o1.ToDict(), {"a": 2, "b": 5})

class TestClusterObject(unittest.TestCase):

  """Tests done on a L{objects.Cluster}"""

  def setUp(self):

    hvparams = {

      constants.HT_FAKE: {

        "foo": "bar",

        "bar": "foo",

        "foobar": "barfoo",

        },

      }

    os_hvp = {

      "lenny-image": {

        constants.HT_FAKE: {

          "foo": "baz",

          "foobar": "foobar",

          "blah": "blibb",

          "blubb": "blah",

          },

        constants.HT_XEN_PVM: {

          "root_path": "/dev/sda5",

          "foo": "foobar",

          },

        },

      "ubuntu-hardy": {

        },

      }

    ndparams = {

        constants.ND_OOB_PROGRAM: "/bin/cluster-oob",

        constants.ND_SPINDLE_COUNT: 1,

        constants.ND_EXCLUSIVE_STORAGE: False,

        }

    self.fake_cl = objects.Cluster(hvparams=hvparams, os_hvp=os_hvp,

                                   ndparams=ndparams)

    self.fake_cl.UpgradeConfig()

  def testGetHVDefaults(self):

    cl = self.fake_cl

    self.failUnlessEqual(cl.GetHVDefaults(constants.HT_FAKE),

                         cl.hvparams[constants.HT_FAKE])

    self.failUnlessEqual(cl.GetHVDefaults(None), {})

    self.failUnlessEqual(cl.GetHVDefaults(constants.HT_XEN_PVM,

                                          os_name="lenny-image"),

                         cl.os_hvp["lenny-image"][constants.HT_XEN_PVM])

  def testFillHvFullMerge(self):

    inst_hvparams = {

      "blah": "blubb",

      }

    fake_dict = constants.HVC_DEFAULTS[constants.HT_FAKE].copy()

    fake_dict.update({

      "foo": "baz",

      "bar": "foo",

      "foobar": "foobar",

      "blah": "blubb",

      "blubb": "blah",

      })

    fake_inst = objects.Instance(name="foobar",

                                 os="lenny-image",

                                 hypervisor=constants.HT_FAKE,

                                 hvparams=inst_hvparams)

    self.assertEqual(fake_dict, self.fake_cl.FillHV(fake_inst))

  def testFillHvGlobalParams(self):

    fake_inst = objects.Instance(name="foobar",

                                 os="ubuntu-hardy",

                                 hypervisor=constants.HT_FAKE,

                                 hvparams={})

    self.assertEqual(self.fake_cl.hvparams[constants.HT_FAKE],

                     self.fake_cl.FillHV(fake_inst))

  def testFillHvInstParams(self):

    inst_hvparams = {

      "blah": "blubb",

      }

    fake_inst = objects.Instance(name="foobar",

                                 os="ubuntu-hardy",

                                 hypervisor=constants.HT_XEN_PVM,

                                 hvparams=inst_hvparams)

    self.assertEqual(inst_hvparams, self.fake_cl.FillHV(fake_inst))

  def testFillHvEmptyParams(self):

    fake_inst = objects.Instance(name="foobar",

                                 os="ubuntu-hardy",

                                 hypervisor=constants.HT_XEN_PVM,

                                 hvparams={})

    self.assertEqual({}, self.fake_cl.FillHV(fake_inst))

  def testFillHvPartialParams(self):

    os = "lenny-image"

    fake_inst = objects.Instance(name="foobar",

                                 os=os,

                                 hypervisor=constants.HT_XEN_PVM,

                                 hvparams={})

    self.assertEqual(self.fake_cl.os_hvp[os][constants.HT_XEN_PVM],

                     self.fake_cl.FillHV(fake_inst))

  def testFillNdParamsCluster(self):

    fake_node = objects.Node(name="test",

                             ndparams={},

                             group="testgroup")

    fake_group = objects.NodeGroup(name="testgroup",

                                   ndparams={})

    self.assertEqual(self.fake_cl.ndparams,

                     self.fake_cl.FillND(fake_node, fake_group))

  def testFillNdParamsNodeGroup(self):

    fake_node = objects.Node(name="test",

                             ndparams={},

                             group="testgroup")

    group_ndparams = {

        constants.ND_OOB_PROGRAM: "/bin/group-oob",

        constants.ND_SPINDLE_COUNT: 10,

        constants.ND_EXCLUSIVE_STORAGE: True,

        constants.ND_OVS: True,

        constants.ND_OVS_LINK: "eth2",

        constants.ND_OVS_NAME: "openvswitch",

        }

    fake_group = objects.NodeGroup(name="testgroup",

                                   ndparams=group_ndparams)

    self.assertEqual(group_ndparams,

                     self.fake_cl.FillND(fake_node, fake_group))

  def testFillNdParamsNode(self):

    node_ndparams = {

        constants.ND_OOB_PROGRAM: "/bin/node-oob",

        constants.ND_SPINDLE_COUNT: 2,

        constants.ND_EXCLUSIVE_STORAGE: True,

        constants.ND_OVS: True,

        constants.ND_OVS_LINK: "eth2",

        constants.ND_OVS_NAME: "openvswitch",

        }

    fake_node = objects.Node(name="test",

                             ndparams=node_ndparams,

                             group="testgroup")

    fake_group = objects.NodeGroup(name="testgroup",

                                   ndparams={})

    self.assertEqual(node_ndparams,

                     self.fake_cl.FillND(fake_node, fake_group))

  def testFillNdParamsAll(self):

    node_ndparams = {

        constants.ND_OOB_PROGRAM: "/bin/node-oob",

        constants.ND_SPINDLE_COUNT: 5,

        constants.ND_EXCLUSIVE_STORAGE: True,

        constants.ND_OVS: True,

        constants.ND_OVS_LINK: "eth2",

        constants.ND_OVS_NAME: "openvswitch",

        }

    fake_node = objects.Node(name="test",

                             ndparams=node_ndparams,

                             group="testgroup")

    group_ndparams = {

        constants.ND_OOB_PROGRAM: "/bin/group-oob",

        constants.ND_SPINDLE_COUNT: 4,

        }

    fake_group = objects.NodeGroup(name="testgroup",

                                   ndparams=group_ndparams)

    self.assertEqual(node_ndparams,

                     self.fake_cl.FillND(fake_node, fake_group))

  def testPrimaryHypervisor(self):

    assert self.fake_cl.enabled_hypervisors is None

    self.fake_cl.enabled_hypervisors = [constants.HT_XEN_HVM]

    self.assertEqual(self.fake_cl.primary_hypervisor, constants.HT_XEN_HVM)

    self.fake_cl.enabled_hypervisors = [constants.HT_XEN_PVM, constants.HT_KVM]

    self.assertEqual(self.fake_cl.primary_hypervisor, constants.HT_XEN_PVM)

    self.fake_cl.enabled_hypervisors = sorted(constants.HYPER_TYPES)

    self.assertEqual(self.fake_cl.primary_hypervisor, constants.HT_CHROOT)

  def testUpgradeConfig(self):

    # FIXME: This test is incomplete

    cluster = objects.Cluster()

    cluster.UpgradeConfig()

    cluster = objects.Cluster(ipolicy={"unknown_key": None})

    self.assertRaises(errors.ConfigurationError, cluster.UpgradeConfig)

class TestClusterObjectTcpUdpPortPool(unittest.TestCase):

  def testNewCluster(self):

    self.assertTrue(objects.Cluster().tcpudp_port_pool is None)

  def testSerializingEmpty(self):

    self.assertEqual(objects.Cluster().ToDict(), {

      "tcpudp_port_pool": [],

      })

  def testSerializing(self):

    cluster = objects.Cluster.FromDict({})

    self.assertEqual(cluster.tcpudp_port_pool, set())

    cluster.tcpudp_port_pool.add(3546)

    cluster.tcpudp_port_pool.add(62511)

    data = cluster.ToDict()

    self.assertEqual(data.keys(), ["tcpudp_port_pool"])

    self.assertEqual(sorted(data["tcpudp_port_pool"]), sorted([3546, 62511]))

  def testDeserializingEmpty(self):

    cluster = objects.Cluster.FromDict({})

    self.assertEqual(cluster.tcpudp_port_pool, set())

  def testDeserialize(self):

    cluster = objects.Cluster.FromDict({

      "tcpudp_port_pool": [26214, 10039, 267],

      })

    self.assertEqual(cluster.tcpudp_port_pool, set([26214, 10039, 267]))

class TestOS(unittest.TestCase):

  ALL_DATA = [

    "debootstrap",

    "debootstrap+default",

    "debootstrap++default",

    ]

  def testSplitNameVariant(self):

    for name in self.ALL_DATA:

      self.assertEqual(len(objects.OS.SplitNameVariant(name)), 2)

  def testVariant(self):

    self.assertEqual(objects.OS.GetVariant("debootstrap"), "")

    self.assertEqual(objects.OS.GetVariant("debootstrap+default"), "default")

class TestInstance(unittest.TestCase):

  def _GenericCheck(self, inst):

    for i in [inst.all_nodes, inst.secondary_nodes]:

      self.assertTrue(isinstance(inst.all_nodes, (list, tuple)),

                      msg="Data type doesn't guarantee order")

    self.assertTrue(inst.primary_node not in inst.secondary_nodes)

    self.assertEqual(inst.all_nodes[0], inst.primary_node,

                     msg="Primary node not first node in list")

  def testNodesNoDisks(self):

    inst = objects.Instance(name="fakeinst.example.com",

      primary_node="pnode.example.com",

      disks=[

        ])

    self._GenericCheck(inst)

    self.assertEqual(len(inst.secondary_nodes), 0)

    self.assertEqual(set(inst.all_nodes), set([inst.primary_node]))

    self.assertEqual(inst.MapLVsByNode(), {

      inst.primary_node: [],

      })

  def testNodesPlainDisks(self):

    inst = objects.Instance(name="fakeinstplain.example.com",

      primary_node="node3.example.com",

      disks=[

        objects.Disk(dev_type=constants.LD_LV, size=128,

                     logical_id=("myxenvg", "disk25494")),

        objects.Disk(dev_type=constants.LD_LV, size=512,

                     logical_id=("myxenvg", "disk29071")),

        ])

    self._GenericCheck(inst)

    self.assertEqual(len(inst.secondary_nodes), 0)

    self.assertEqual(set(inst.all_nodes), set([inst.primary_node]))

    self.assertEqual(inst.MapLVsByNode(), {

      inst.primary_node: ["myxenvg/disk25494", "myxenvg/disk29071"],

      })

  def testNodesDrbdDisks(self):

    inst = objects.Instance(name="fakeinstdrbd.example.com",

      primary_node="node10.example.com",

      disks=[

        objects.Disk(dev_type=constants.LD_DRBD8, size=786432,

          logical_id=("node10.example.com", "node15.example.com",

                      12300, 0, 0, "secret"),

          children=[

            objects.Disk(dev_type=constants.LD_LV, size=786432,

                         logical_id=("myxenvg", "disk0")),

            objects.Disk(dev_type=constants.LD_LV, size=128,

                         logical_id=("myxenvg", "meta0"))

          ],

          iv_name="disk/0")

        ])

    self._GenericCheck(inst)

    self.assertEqual(set(inst.secondary_nodes), set(["node15.example.com"]))

    self.assertEqual(set(inst.all_nodes),

                     set([inst.primary_node, "node15.example.com"]))

    self.assertEqual(inst.MapLVsByNode(), {

      inst.primary_node: ["myxenvg/disk0", "myxenvg/meta0"],

      "node15.example.com": ["myxenvg/disk0", "myxenvg/meta0"],

      })

    self.assertEqual(inst.FindDisk(0), inst.disks[0])

    self.assertRaises(errors.OpPrereqError, inst.FindDisk, "hello")

    self.assertRaises(errors.OpPrereqError, inst.FindDisk, 100)

    self.assertRaises(errors.OpPrereqError, inst.FindDisk, 1)

class TestNode(unittest.TestCase):

  def testEmpty(self):

    self.assertEqual(objects.Node().ToDict(), {})

    self.assertTrue(isinstance(objects.Node.FromDict({}), objects.Node))

  def testHvState(self):

    node = objects.Node(name="node18157.example.com", hv_state={

      constants.HT_XEN_HVM: objects.NodeHvState(cpu_total=64),

      constants.HT_KVM: objects.NodeHvState(cpu_node=1),

      })

    node2 = objects.Node.FromDict(node.ToDict())

    # Make sure nothing can reference it anymore

    del node

    self.assertEqual(node2.name, "node18157.example.com")

    self.assertEqual(frozenset(node2.hv_state), frozenset([

      constants.HT_XEN_HVM,

      constants.HT_KVM,

      ]))

    self.assertEqual(node2.hv_state[constants.HT_KVM].cpu_node, 1)

    self.assertEqual(node2.hv_state[constants.HT_XEN_HVM].cpu_total, 64)

  def testDiskState(self):

    node = objects.Node(name="node32087.example.com", disk_state={

      constants.LD_LV: {

        "lv32352": objects.NodeDiskState(total=128),

        "lv2082": objects.NodeDiskState(total=512),

        },

      })

    node2 = objects.Node.FromDict(node.ToDict())

    # Make sure nothing can reference it anymore

    del node

    self.assertEqual(node2.name, "node32087.example.com")

    self.assertEqual(frozenset(node2.disk_state), frozenset([

      constants.LD_LV,

      ]))

    self.assertEqual(frozenset(node2.disk_state[constants.LD_LV]), frozenset([

      "lv32352",

      "lv2082",

      ]))

    self.assertEqual(node2.disk_state[constants.LD_LV]["lv2082"].total, 512)

    self.assertEqual(node2.disk_state[constants.LD_LV]["lv32352"].total, 128)

  def testFilterEsNdp(self):

    node1 = objects.Node(name="node11673.example.com", ndparams={

      constants.ND_EXCLUSIVE_STORAGE: True,

      })

    node2 = objects.Node(name="node11674.example.com", ndparams={

      constants.ND_SPINDLE_COUNT: 3,

      constants.ND_EXCLUSIVE_STORAGE: False,

      })

    self.assertTrue(constants.ND_EXCLUSIVE_STORAGE in node1.ndparams)

    node1.UpgradeConfig()

    self.assertFalse(constants.ND_EXCLUSIVE_STORAGE in node1.ndparams)

    self.assertTrue(constants.ND_EXCLUSIVE_STORAGE in node2.ndparams)

    self.assertTrue(constants.ND_SPINDLE_COUNT in node2.ndparams)

    node2.UpgradeConfig()

    self.assertFalse(constants.ND_EXCLUSIVE_STORAGE in node2.ndparams)

    self.assertTrue(constants.ND_SPINDLE_COUNT in node2.ndparams)

class TestInstancePolicy(unittest.TestCase):

  def setUp(self):

    # Policies are big, and we want to see the difference in case of an error

    self.maxDiff = None

  def _AssertIPolicyIsFull(self, policy):

    self.assertEqual(frozenset(policy.keys()), constants.IPOLICY_ALL_KEYS)

    self.assertTrue(len(policy[constants.ISPECS_MINMAX]) > 0)

    for minmax in policy[constants.ISPECS_MINMAX]:

      self.assertEqual(frozenset(minmax.keys()), constants.ISPECS_MINMAX_KEYS)

      for key in constants.ISPECS_MINMAX_KEYS:

        self.assertEqual(frozenset(minmax[key].keys()),

                         constants.ISPECS_PARAMETERS)

    self.assertEqual(frozenset(policy[constants.ISPECS_STD].keys()),

                     constants.ISPECS_PARAMETERS)

  def testDefaultIPolicy(self):

    objects.InstancePolicy.CheckParameterSyntax(constants.IPOLICY_DEFAULTS,

                                                True)

    self._AssertIPolicyIsFull(constants.IPOLICY_DEFAULTS)

  def _AssertPolicyIsBad(self, ipolicy, do_check_std=None):

    if do_check_std is None:

      check_std_vals = [False, True]

    else:

      check_std_vals = [do_check_std]

    for check_std in check_std_vals:

      self.assertRaises(errors.ConfigurationError,

                        objects.InstancePolicy.CheckISpecSyntax,

                        ipolicy, check_std)

  def testCheckISpecSyntax(self):

    default_stdspec = constants.IPOLICY_DEFAULTS[constants.ISPECS_STD]

    incomplete_ipolicies = [

      {

         constants.ISPECS_MINMAX: [],

         constants.ISPECS_STD: default_stdspec,

         },

      {

         constants.ISPECS_MINMAX: [{}],

         constants.ISPECS_STD: default_stdspec,

         },

      {

        constants.ISPECS_MINMAX: [{

          constants.ISPECS_MIN: NotImplemented,

          }],

        constants.ISPECS_STD: default_stdspec,

        },

      {

        constants.ISPECS_MINMAX: [{

          constants.ISPECS_MAX: NotImplemented,

          }],

        constants.ISPECS_STD: default_stdspec,

        },

      {

        constants.ISPECS_MINMAX: [{

          constants.ISPECS_MIN: NotImplemented,

          constants.ISPECS_MAX: NotImplemented,

          }],

        },

      ]

    for ipol in incomplete_ipolicies:

      self.assertRaises(errors.ConfigurationError,

                        objects.InstancePolicy.CheckISpecSyntax,

                        ipol, True)

      oldminmax = ipol[constants.ISPECS_MINMAX]

      if oldminmax:

        # Prepending valid specs shouldn't change the error

        ipol[constants.ISPECS_MINMAX] = ([constants.ISPECS_MINMAX_DEFAULTS] +

                                         oldminmax)

        self.assertRaises(errors.ConfigurationError,

                          objects.InstancePolicy.CheckISpecSyntax,

                          ipol, True)

    good_ipolicy = {

      constants.ISPECS_MINMAX: [

        {

          constants.ISPECS_MIN: {

            constants.ISPEC_MEM_SIZE: 64,

            constants.ISPEC_CPU_COUNT: 1,

            constants.ISPEC_DISK_COUNT: 2,

            constants.ISPEC_DISK_SIZE: 64,

            constants.ISPEC_NIC_COUNT: 1,

            constants.ISPEC_SPINDLE_USE: 1,

            },

          constants.ISPECS_MAX: {

            constants.ISPEC_MEM_SIZE: 16384,

            constants.ISPEC_CPU_COUNT: 5,

            constants.ISPEC_DISK_COUNT: 12,

            constants.ISPEC_DISK_SIZE: 1024,

            constants.ISPEC_NIC_COUNT: 9,

            constants.ISPEC_SPINDLE_USE: 18,

            },

          },

        {

          constants.ISPECS_MIN: {

            constants.ISPEC_MEM_SIZE: 32768,

            constants.ISPEC_CPU_COUNT: 8,

            constants.ISPEC_DISK_COUNT: 1,

            constants.ISPEC_DISK_SIZE: 1024,

            constants.ISPEC_NIC_COUNT: 1,

            constants.ISPEC_SPINDLE_USE: 1,

            },

          constants.ISPECS_MAX: {

            constants.ISPEC_MEM_SIZE: 65536,

            constants.ISPEC_CPU_COUNT: 10,

            constants.ISPEC_DISK_COUNT: 5,

            constants.ISPEC_DISK_SIZE: 1024 * 1024,

            constants.ISPEC_NIC_COUNT: 3,

            constants.ISPEC_SPINDLE_USE: 12,

            },

          },

        ],

      }

    good_ipolicy[constants.ISPECS_STD] = copy.deepcopy(

      good_ipolicy[constants.ISPECS_MINMAX][0][constants.ISPECS_MAX])

    # Check that it's really good before making it bad

    objects.InstancePolicy.CheckISpecSyntax(good_ipolicy, True)

    bad_ipolicy = copy.deepcopy(good_ipolicy)

    for minmax in bad_ipolicy[constants.ISPECS_MINMAX]:

      for (key, spec) in minmax.items():

        for param in spec:

          oldv = spec[param]

          del spec[param]

          self._AssertPolicyIsBad(bad_ipolicy)

          if key == constants.ISPECS_MIN:

            spec[param] = minmax[constants.ISPECS_MAX][param] + 1

          self._AssertPolicyIsBad(bad_ipolicy)

          spec[param] = oldv

    assert bad_ipolicy == good_ipolicy

    stdspec = bad_ipolicy[constants.ISPECS_STD]

    for param in stdspec:

      oldv = stdspec[param]

      del stdspec[param]

      self._AssertPolicyIsBad(bad_ipolicy, True)

      # Note that std spec is the same as a max spec

      stdspec[param] = oldv + 1

      self._AssertPolicyIsBad(bad_ipolicy, True)

      stdspec[param] = oldv

    assert bad_ipolicy == good_ipolicy

    for minmax in good_ipolicy[constants.ISPECS_MINMAX]:

      for spec in minmax.values():

        good_ipolicy[constants.ISPECS_STD] = spec

        objects.InstancePolicy.CheckISpecSyntax(good_ipolicy, True)

  def testCheckISpecParamSyntax(self):

    par = "my_parameter"

    for check_std in [True, False]:

      # Min and max only

      good_values = [(11, 11), (11, 40), (0, 0)]

      for (mn, mx) in good_values:

        minmax = dict((k, {}) for k in constants.ISPECS_MINMAX_KEYS)

        minmax[constants.ISPECS_MIN][par] = mn

        minmax[constants.ISPECS_MAX][par] = mx

        objects.InstancePolicy._CheckISpecParamSyntax(minmax, {}, par,

                                                     check_std)

      minmax = dict((k, {}) for k in constants.ISPECS_MINMAX_KEYS)

      minmax[constants.ISPECS_MIN][par] = 11

      minmax[constants.ISPECS_MAX][par] = 5

      self.assertRaises(errors.ConfigurationError,

                        objects.InstancePolicy._CheckISpecParamSyntax,

                        minmax, {}, par, check_std)

    # Min, std, max

    good_values = [

      (11, 11, 11),

      (11, 11, 40),

      (11, 40, 40),

      ]

    for (mn, st, mx) in good_values:

      minmax = {

        constants.ISPECS_MIN: {par: mn},

        constants.ISPECS_MAX: {par: mx},

        }

      stdspec = {par: st}

      objects.InstancePolicy._CheckISpecParamSyntax(minmax, stdspec, par, True)

    bad_values = [

      (11, 11,  5, True),

      (40, 11, 11, True),

      (11, 80, 40, False),

      (11,  5, 40, False,),

      (11,  5,  5, True),

      (40, 40, 11, True),

      ]

    for (mn, st, mx, excp) in bad_values:

      minmax = {

        constants.ISPECS_MIN: {par: mn},

        constants.ISPECS_MAX: {par: mx},

        }

      stdspec = {par: st}

      if excp:

        self.assertRaises(errors.ConfigurationError,

                          objects.InstancePolicy._CheckISpecParamSyntax,

                          minmax, stdspec, par, True)

      else:

        ret = objects.InstancePolicy._CheckISpecParamSyntax(minmax, stdspec,

                                                            par, True)

        self.assertFalse(ret)

  def testCheckDiskTemplates(self):

    invalid = "this_is_not_a_good_template"

    for dt in constants.DISK_TEMPLATES:

      objects.InstancePolicy.CheckDiskTemplates([dt])

    objects.InstancePolicy.CheckDiskTemplates(list(constants.DISK_TEMPLATES))

    bad_examples = [

      [invalid],

      [constants.DT_DRBD8, invalid],

      list(constants.DISK_TEMPLATES) + [invalid],

      [],

      None,

      ]

    for dtl in bad_examples:

      self.assertRaises(errors.ConfigurationError,

                        objects.InstancePolicy.CheckDiskTemplates,

                        dtl)

  def testCheckParameterSyntax(self):

    invalid = "this_key_shouldnt_be_here"

    for check_std in [True, False]:

      objects.InstancePolicy.CheckParameterSyntax({}, check_std)

      policy = {invalid: None}

      self.assertRaises(errors.ConfigurationError,

                        objects.InstancePolicy.CheckParameterSyntax,

                        policy, check_std)

      for par in constants.IPOLICY_PARAMETERS:

        for val in ("blah", None, {}, [42]):

          policy = {par: val}

          self.assertRaises(errors.ConfigurationError,

                            objects.InstancePolicy.CheckParameterSyntax,

                            policy, check_std)

  def testFillIPolicyEmpty(self):

    policy = objects.FillIPolicy(constants.IPOLICY_DEFAULTS, {})

    objects.InstancePolicy.CheckParameterSyntax(policy, True)

    self.assertEqual(policy, constants.IPOLICY_DEFAULTS)

  def _AssertISpecsMerged(self, default_spec, diff_spec, merged_spec):

    for (param, value) in merged_spec.items():

      if param in diff_spec:

        self.assertEqual(value, diff_spec[param])

      else:

        self.assertEqual(value, default_spec[param])

  def _AssertIPolicyMerged(self, default_pol, diff_pol, merged_pol):

    for (key, value) in merged_pol.items():

      if key in diff_pol:

        if key == constants.ISPECS_STD:

          self._AssertISpecsMerged(default_pol[key], diff_pol[key], value)

        else:

          self.assertEqual(value, diff_pol[key])

      else:

        self.assertEqual(value, default_pol[key])

  def testFillIPolicy(self):

    partial_policies = [

      {constants.IPOLICY_VCPU_RATIO: 3.14},

      {constants.IPOLICY_SPINDLE_RATIO: 2.72},

      {constants.IPOLICY_DTS: [constants.DT_FILE]},

      {constants.ISPECS_STD: {constants.ISPEC_DISK_COUNT: 3}},

      {constants.ISPECS_MINMAX: [constants.ISPECS_MINMAX_DEFAULTS,

                                 constants.ISPECS_MINMAX_DEFAULTS]}

      ]

    for diff_pol in partial_policies:

      policy = objects.FillIPolicy(constants.IPOLICY_DEFAULTS, diff_pol)

      objects.InstancePolicy.CheckParameterSyntax(policy, True)

      self._AssertIPolicyIsFull(policy)

      self._AssertIPolicyMerged(constants.IPOLICY_DEFAULTS, diff_pol, policy)

  def testFillIPolicyKeepsUnknown(self):

    INVALID_KEY = "invalid_ipolicy_key"

    diff_pol = {

      INVALID_KEY: None,

      }

    policy = objects.FillIPolicy(constants.IPOLICY_DEFAULTS, diff_pol)

    self.assertTrue(INVALID_KEY in policy)

if __name__ == "__main__":

  testutils.GanetiTestProgram()