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# Copyright (C) 2018 Lars Wirzenius
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import unittest
import muck
class MemoryStoreTests(unittest.TestCase):
def test_is_initially_empty(self):
ms = muck.MemoryStore()
self.assertEqual(len(ms), 0)
self.assertEqual(ms.as_dict(), {})
def test_creates_resource(self):
meta = {
'id': 'id-1',
'rev': 'rev-1',
}
res = {
'foo': 'bar',
}
chg = muck.CreateChange(meta=meta, res=res)
ms = muck.MemoryStore()
ms.change(chg)
self.assertEqual(len(ms), 1)
self.assertEqual(
ms.as_dict(),
{
'id-1': (meta, res),
})
def test_wont_create_resource_with_conflicting_id(self):
meta = {
'id': 'id-1',
'rev': 'rev-1',
}
res = {
'foo': 'bar',
}
chg = muck.CreateChange(meta=meta, res=res)
ms = muck.MemoryStore()
ms.change(chg)
with self.assertRaises(muck.Error):
ms.change(chg)
def test_updates_resource(self):
meta_1 = {
'id': 'id-1',
'rev': 'rev-1',
}
res_v1 = {
'foo': 'bar',
}
meta_2 = dict(meta_1)
meta_2['rev'] = 'rev-2'
res_v2 = dict(res_v1)
res_v2['foo'] = 'yo'
create = muck.CreateChange(meta=meta_1, res=res_v1)
update = muck.UpdateChange(meta=meta_2, res=res_v2)
ms = muck.MemoryStore()
ms.change(create)
ms.change(update)
self.assertEqual(len(ms), 1)
self.assertEqual(
ms.as_dict(),
{
'id-1': (meta_2, res_v2),
})
def test_refuses_to_update_resource_that_didnt_exist(self):
meta = {
'id': 'id-1',
'rev': 'rev-1',
}
res = {
'foo': 'bar',
}
update = muck.UpdateChange(meta=meta, res=res)
ms = muck.MemoryStore()
with self.assertRaises(muck.Error):
ms.change(update)
def test_deletes_resource(self):
meta = {
'id': 'id-1',
'rev': 'rev-1',
}
res = {
'foo': 'bar',
}
create = muck.CreateChange(meta=meta, res=res)
delete = muck.DeleteChange(meta=meta)
ms = muck.MemoryStore()
ms.change(create)
ms.change(delete)
self.assertEqual(len(ms), 0)
self.assertEqual(ms.as_dict(), {})
def test_refuses_to_delete_resource_that_doesnt_exist(self):
meta = {
'id': 'id-1',
'rev': 'rev-1',
}
delete = muck.DeleteChange(meta=meta)
ms = muck.MemoryStore()
with self.assertRaises(muck.Error):
ms.change(delete)
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