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#
# Copyright 2013 Canonical Corp.
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#    Licensed under the Apache License, Version 2.0 (the "License"); you may
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#    a copy of the License at
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#         http://www.apache.org/licenses/LICENSE-2.0
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from nova import exception
from nova import test
from nova.virt.vmwareapi import fake
from nova.virt.vmwareapi import vm_util


class fake_session(object):
    def __init__(self, ret=None):
        self.ret = ret

    def _call_method(self, *args):
        return self.ret


class VMwareVMUtilTestCase(test.TestCase):
    def setUp(self):
        super(VMwareVMUtilTestCase, self).setUp()

    def tearDown(self):
        super(VMwareVMUtilTestCase, self).tearDown()

    def test_get_datastore_ref_and_name(self):
        result = vm_util.get_datastore_ref_and_name(
            fake_session([fake.Datastore()]))

        self.assertEquals(result[1], "fake-ds")
        self.assertEquals(result[2], 1024 * 1024 * 1024)
        self.assertEquals(result[3], 1024 * 1024 * 500)

    def test_get_datastore_ref_and_name_without_datastore(self):

        self.assertRaises(exception.DatastoreNotFound,
                vm_util.get_datastore_ref_and_name,
                fake_session(), host="fake-host")

        self.assertRaises(exception.DatastoreNotFound,
                vm_util.get_datastore_ref_and_name,
                fake_session(), cluster="fake-cluster")

Fix variable referenced before assginment in vmwareapi code.
Fix variable referenced before assginment in vmwareapi code.

Add unitests for VMwareapi vm_util.
fix bug #1177689

Change-Id: If16109ee626c197227affba122c2e4986d92d2df
