def test_hook_scope(self):
kv = Storage(':memory:')
try:
with kv.hook_scope('install') as rev:
self.assertEqual(rev, 1)
kv.set('a', 1)
raise RuntimeError('x')
except RuntimeError:
self.assertEqual(kv.get('a'), None)
with kv.hook_scope('config-changed') as rev:
self.assertEqual(rev, 1)
kv.set('a', 1)
self.assertEqual(kv.get('a'), 1)
kv.revision = None
with kv.hook_scope('start') as rev:
self.assertEqual(rev, 2)
kv.set('a', False)
kv.set('a', True)
self.assertEqual(kv.get('a'), True)
# History doesn't decode values by default
history = [h[:-1] for h in kv.gethistory('a')]
self.assertEqual(
history,
[(1, 'a', '1', 'config-changed'),
(2, 'a', 'true', 'start')])
history = [h[:-1] for h in kv.gethistory('a', deserialize=True)]
self.assertEqual(
history,
[(1, 'a', 1, 'config-changed'),
(2, 'a', True, 'start')])
def test_unset(self):
kv = Storage(':memory:')
with kv.hook_scope('install'):
kv.set('a', True)
with kv.hook_scope('start'):
kv.set('a', False)
with kv.hook_scope('config-changed'):
kv.unset('a')
history = [h[:-1] for h in kv.gethistory('a')]
self.assertEqual(history, [(1, 'a', 'true', 'install'),
(2, 'a', 'false', 'start'),
(3, 'a', '"DELETED"', "config-changed")])
def test_delta_no_previous_and_history(self):
kv = Storage(':memory:')
with kv.hook_scope('install'):
data = {'a': 0, 'c': False}
delta = kv.delta(data, 'settings.')
self.assertEqual(delta, {'a': (None, False), 'c': (None, False)})
kv.update(data, 'settings.')
with kv.hook_scope('config'):
data = {'a': 1, 'c': True}
delta = kv.delta(data, 'settings.')
self.assertEqual(delta, {'a': (0, 1), 'c': (False, True)})
kv.update(data, 'settings.')
# strip the time
history = [h[:-1] for h in kv.gethistory('settings.a')]
self.assertEqual(history, [(1, 'settings.a', '0', 'install'),
(2, 'settings.a', '1', 'config')])