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# Copyright (C) 2019  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 shutil
import tempfile
import unittest


import ick2


class StoreTests(unittest.TestCase):

    def setUp(self):
        self.store = ick2.MemoryStore()
        self.token = 'dummy-test-token'
        self.obj = {
            'foo': 'bar',
        }

    def create(self):
        return self.store.create(self.token, self.obj)

    def find_all_resources(self):
        cond = [
            {
                'where': 'meta',
                'field': 'id',
                'op': '!=',
                'pattern': '',
            }
        ]
        return self.store.search(self.token, cond)

    def test_has_no_resources_initially(self):
        self.assertEqual(self.find_all_resources(), [])

    def test_creates_resource(self):
        rid, rev = self.create()
        self.assertTrue(isinstance(rid, str))
        self.assertTrue(isinstance(rev, str))
        self.assertTrue(rid)
        self.assertTrue(rev)
        self.assertEqual(self.find_all_resources(), [rid])

    def test_retrieves_resource(self):
        rid, rev = self.create()
        obj, rev = self.store.show(self.token, rid)
        self.assertEqual(obj, self.obj)
        self.assertFalse(obj is self.obj)

    def test_retrieving_nonexistent_resource_raises_error(self):
        with self.assertRaises(ick2.NotFound):
            self.store.show(self.token, 'wrong.id')

    def test_updating_with_wrong_revision_raises_error(self):
        rid, rev = self.create()
        with self.assertRaises(ick2.Conflict):
            self.store.update(self.token, rid, self.obj, 'wrong.revision')

    def test_updates_resource(self):
        rid, rev = self.create()
        obj2 = {
            'yo': 'yoyo',
        }
        rev2 = self.store.update(self.token, rid, obj2, rev)
        obj3, rev3 = self.store.show(self.token, rid)
        self.assertTrue(rev2)
        self.assertNotEqual(rev, rev2)
        self.assertEqual(rev2, rev3)
        self.assertEqual(obj2, obj3)

    def test_deletes_resource(self):
        rid, rev = self.create()
        self.store.delete(self.token, rid)
        self.assertEqual(self.find_all_resources(), [])