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# Copyright (c) 2016 Canonical Ltd
#
# 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.
import mock
from pylxd.models import _model as model
from pylxd.tests import testing
class Item(model.Model):
"""A fake model."""
name = model.Attribute(readonly=True)
age = model.Attribute(int)
data = model.Attribute()
@property
def api(self):
return self.client.api.items[self.name]
class TestModel(testing.PyLXDTestCase):
"""Tests for pylxd.model.Model."""
def setUp(self):
super(TestModel, self).setUp()
self.add_rule({
'json': {
'type': 'sync',
'metadata': {
'name': 'an-item',
'age': 1000,
'data': {'key': 'val'},
}
},
'method': 'GET',
'url': r'^http://pylxd.test/1.0/items/an-item',
})
self.add_rule({
'json': {
'type': 'sync',
'metadata': {}
},
'method': 'put',
'url': r'^http://pylxd.test/1.0/items/an-item',
})
self.add_rule({
'json': {
'type': 'sync',
'metadata': {}
},
'method': 'patch',
'url': r'^http://pylxd.test/1.0/items/an-item',
})
self.add_rule({
'json': {
'type': 'sync',
'metadata': {}
},
'method': 'DELETE',
'url': r'^http://pylxd.test/1.0/items/an-item',
})
def test_init(self):
"""Initial attributes are set."""
item = Item(self.client, name='an-item', age=15, data={'key': 'val'})
self.assertEqual(self.client, item.client)
self.assertEqual('an-item', item.name)
@mock.patch.dict('os.environ', {'PYLXD_WARNINGS': ''})
@mock.patch('warnings.warn')
def test_init_warnings_once(self, mock_warn):
with mock.patch('pylxd.models._model._seen_attribute_warnings',
new=set()):
Item(self.client, unknown='some_value')
mock_warn.assert_called_once_with(mock.ANY)
Item(self.client, unknown='some_value_as_well')
mock_warn.assert_called_once_with(mock.ANY)
Item(self.client, unknown2="some_2nd_value")
self.assertEqual(len(mock_warn.call_args_list), 2)
@mock.patch.dict('os.environ', {'PYLXD_WARNINGS': 'none'})
@mock.patch('warnings.warn')
def test_init_warnings_none(self, mock_warn):
with mock.patch('pylxd.models._model._seen_attribute_warnings',
new=set()):
Item(self.client, unknown='some_value')
mock_warn.assert_not_called()
@mock.patch.dict('os.environ', {'PYLXD_WARNINGS': 'always'})
@mock.patch('warnings.warn')
def test_init_warnings_always(self, mock_warn):
with mock.patch('pylxd.models._model._seen_attribute_warnings',
new=set()):
Item(self.client, unknown='some_value')
mock_warn.assert_called_once_with(mock.ANY)
Item(self.client, unknown='some_value_as_well')
self.assertEqual(len(mock_warn.call_args_list), 2)
@mock.patch.dict('os.environ', {'PYLXD_WARNINGS': 'none'})
def test_init_unknown_attribute(self):
"""Unknown attributes aren't set."""
item = Item(self.client, name='an-item', nonexistent='SRSLY')
try:
item.nonexistent
self.fail('item.nonexistent did not raise AttributeError')
except AttributeError:
pass
def test_unknown_attribute(self):
"""Setting unknown attributes raise an exception."""
def set_unknown_attribute():
item = Item(self.client, name='an-item')
item.nonexistent = 'SRSLY'
self.assertRaises(AttributeError, set_unknown_attribute)
def test_get_unknown_attribute(self):
"""Setting unknown attributes raise an exception."""
def get_unknown_attribute():
item = Item(self.client, name='an-item')
return item.nonexistent
self.assertRaises(AttributeError, get_unknown_attribute)
def test_unset_attribute_sync(self):
"""Reading unavailable attributes calls sync."""
item = Item(self.client, name='an-item')
self.assertEqual(1000, item.age)
def test_sync(self):
"""A sync will update attributes from the server."""
item = Item(self.client, name='an-item')
item.sync()
self.assertEqual(1000, item.age)
def test_sync_dirty(self):
"""Sync will not overwrite local attribute changes."""
item = Item(self.client, name='an-item')
item.age = 250
item.sync()
self.assertEqual(250, item.age)
def test_rollback(self):
"""Rollback resets the object from the server."""
item = Item(self.client, name='an-item', age=15, data={'key': 'val'})
item.age = 50
item.rollback()
self.assertEqual(1000, item.age)
self.assertFalse(item.dirty)
def test_int_attribute_validator(self):
"""Age is set properly to be an int."""
item = Item(self.client)
item.age = '100'
self.assertEqual(100, item.age)
def test_int_attribute_invalid(self):
"""TypeError is raised when data can't be converted to type."""
def set_string():
item = Item(self.client)
item.age = 'abc'
self.assertRaises(ValueError, set_string)
def test_dirty(self):
"""Changes mark the object as dirty."""
item = Item(self.client, name='an-item', age=15, data={'key': 'val'})
item.age = 100
self.assertTrue(item.dirty)
def test_not_dirty(self):
"""Changes mark the object as dirty."""
item = Item(self.client, name='an-item', age=15, data={'key': 'val'})
self.assertFalse(item.dirty)
def test_marshall(self):
"""The object is marshalled into a dict."""
item = Item(self.client, name='an-item', age=15, data={'key': 'val'})
result = item.marshall()
self.assertEqual({'age': 15, 'data': {'key': 'val'}}, result)
def test_delete(self):
"""The object is deleted, and client is unset."""
item = Item(self.client, name='an-item', age=15, data={'key': 'val'})
item.delete()
self.assertIsNone(item.client)
def test_save(self):
"""Attributes are written to the server; object is marked clean."""
item = Item(self.client, name='an-item', age=15, data={'key': 'val'})
item.age = 69
item.save()
self.assertFalse(item.dirty)
def test_put(self):
item = Item(self.client, name='an-item', age=15, data={'key': 'val'})
item.put({'age': 69})
# should sync back to 1000
self.assertEqual(item.age, 1000)
def test_raw_put(self):
item = Item(self.client, name='an-item', age=15, data={'key': 'val'})
item.age = 55
item.raw_put({'age': 69})
# should sync NOT back to 1000
self.assertEqual(item.age, 55)
def test_put_raw_async(self):
self.add_rule({
'json': {
'type': 'async',
'metadata': {},
'operation': "/1.0/items/123456789",
},
'status_code': 202,
'method': 'put',
'url': r'^http://pylxd.test/1.0/items/an-item$',
})
self.add_rule({
'json': {
'status': 'Running',
'status_code': 103,
'type': 'sync',
'metadata': {
'id': '123456789',
'secret': "some-long-string-of-digits",
},
},
'method': 'get',
'url': r'^http://pylxd.test/1.0/operations/123456789$',
})
self.add_rule({
'json': {
'type': 'sync',
},
'method': 'get',
'url': r'^http://pylxd.test/1.0/operations/123456789/wait$',
})
item = Item(self.client, name='an-item', age=15, data={'key': 'val'})
item.put({'age': 69}, wait=True)
def test_patch(self):
item = Item(self.client, name='an-item', age=15, data={'key': 'val'})
item.patch({'age': 69})
# should sync back to 1000
self.assertEqual(item.age, 1000)
def test_patch_raw_async(self):
self.add_rule({
'json': {
'type': 'async',
'metadata': {},
'operation': "/1.0/items/123456789",
},
'status_code': 202,
'method': 'patch',
'url': r'^http://pylxd.test/1.0/items/an-item$',
})
self.add_rule({
'json': {
'status': 'Running',
'status_code': 103,
'type': 'sync',
'metadata': {
'id': '123456789',
'secret': "some-long-string-of-digits",
},
},
'method': 'get',
'url': r'^http://pylxd.test/1.0/operations/123456789$',
})
self.add_rule({
'json': {
'type': 'sync',
},
'method': 'get',
'url': r'^http://pylxd.test/1.0/operations/123456789/wait$',
})
item = Item(self.client, name='an-item', age=15, data={'key': 'val'})
item.patch({'age': 69}, wait=True)
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