+++ /dev/null
-""""Test Versioned Attributes in the abstract."""
-from unittest import TestCase
-from time import sleep
-from datetime import datetime
-from tests.utils import TestCaseWithDB
-from plomtask.misc import VersionedAttribute, TIMESTAMP_FMT
-from plomtask.db import BaseModel
-
-SQL_TEST_TABLE = '''
-CREATE TABLE versioned_tests (
- parent INTEGER NOT NULL,
- timestamp TEXT NOT NULL,
- value TEXT NOT NULL,
- PRIMARY KEY (parent, timestamp)
-);
-'''
-
-
-class TestParentType(BaseModel[int]):
- """Dummy abstracting whatever may use VersionedAttributes."""
-
-
-class TestsSansDB(TestCase):
- """Tests not requiring DB setup."""
-
- def test_VersionedAttribute_set(self) -> None:
- """Test .set() behaves as expected."""
- # check value gets set even if already is the default
- attr = VersionedAttribute(None, '', 'A')
- attr.set('A')
- self.assertEqual(list(attr.history.values()), ['A'])
- # check same value does not get set twice in a row,
- # and that not even its timestamp get updated
- timestamp = list(attr.history.keys())[0]
- attr.set('A')
- self.assertEqual(list(attr.history.values()), ['A'])
- self.assertEqual(list(attr.history.keys())[0], timestamp)
- # check that different value _will_ be set/added
- attr.set('B')
- self.assertEqual(sorted(attr.history.values()), ['A', 'B'])
- # check that a previously used value can be set if not most recent
- attr.set('A')
- self.assertEqual(sorted(attr.history.values()), ['A', 'A', 'B'])
- # again check for same value not being set twice in a row, even for
- # later items
- attr.set('D')
- self.assertEqual(sorted(attr.history.values()), ['A', 'A', 'B', 'D'])
- attr.set('D')
- self.assertEqual(sorted(attr.history.values()), ['A', 'A', 'B', 'D'])
-
- def test_VersionedAttribute_newest(self) -> None:
- """Test .newest returns newest element, or default on empty."""
- attr = VersionedAttribute(None, '', 'A')
- self.assertEqual(attr.newest, 'A')
- attr.set('B')
- self.assertEqual(attr.newest, 'B')
- attr.set('C')
-
- def test_VersionedAttribute_at(self) -> None:
- """Test .at() returns values nearest to queried time, or default."""
- # check .at() return default on empty history
- attr = VersionedAttribute(None, '', 'A')
- timestamp_a = datetime.now().strftime(TIMESTAMP_FMT)
- self.assertEqual(attr.at(timestamp_a), 'A')
- # check value exactly at timestamp returned
- attr.set('B')
- timestamp_b = list(attr.history.keys())[0]
- self.assertEqual(attr.at(timestamp_b), 'B')
- # check earliest value returned if exists, rather than default
- self.assertEqual(attr.at(timestamp_a), 'B')
- # check reverts to previous value for timestamps not indexed
- sleep(0.00001)
- timestamp_between = datetime.now().strftime(TIMESTAMP_FMT)
- sleep(0.00001)
- attr.set('C')
- timestamp_c = sorted(attr.history.keys())[-1]
- self.assertEqual(attr.at(timestamp_c), 'C')
- self.assertEqual(attr.at(timestamp_between), 'B')
- sleep(0.00001)
- timestamp_after_c = datetime.now().strftime(TIMESTAMP_FMT)
- self.assertEqual(attr.at(timestamp_after_c), 'C')
-
-
-class TestsWithDB(TestCaseWithDB):
- """Module tests requiring DB setup."""
-
- def setUp(self) -> None:
- super().setUp()
- self.db_conn.exec(SQL_TEST_TABLE)
-
- def test_VersionedAttribute_save(self) -> None:
- """Test .save() to write to DB."""
- test_parent = TestParentType(1)
- attr = VersionedAttribute(test_parent, 'versioned_tests', 'A')
- # check mere .set() calls do not by themselves reflect in the DB
- attr.set('B')
- self.assertEqual([],
- self.db_conn.row_where('versioned_tests',
- 'parent', 1))
- # check .save() makes history appear in DB
- attr.save(self.db_conn)
- vals_found = []
- for row in self.db_conn.row_where('versioned_tests', 'parent', 1):
- vals_found += [row[2]]
- self.assertEqual(['B'], vals_found)
- # check .save() also updates history in DB
- attr.set('C')
- attr.save(self.db_conn)
- vals_found = []
- for row in self.db_conn.row_where('versioned_tests', 'parent', 1):
- vals_found += [row[2]]
- self.assertEqual(['B', 'C'], sorted(vals_found))
-
- def test_VersionedAttribute_history_from_row(self) -> None:
- """"Test .history_from_row() properly interprets DB rows."""
- test_parent = TestParentType(1)
- attr = VersionedAttribute(test_parent, 'versioned_tests', 'A')
- attr.set('B')
- attr.set('C')
- attr.save(self.db_conn)
- loaded_attr = VersionedAttribute(test_parent, 'versioned_tests', 'A')
- for row in self.db_conn.row_where('versioned_tests', 'parent', 1):
- loaded_attr.history_from_row(row)
- for timestamp, value in attr.history.items():
- self.assertEqual(value, loaded_attr.history[timestamp])
- self.assertEqual(len(attr.history.keys()),
- len(loaded_attr.history.keys()))