def test_read_conflict_rollback_not_reintroduced():
db = StubDb()
rollback = StubRollback()
qa = qube.init({'test': set()})
qb = qube.init({'test': set()})
qube.apply_op(qa, ('add', 'test', 'abc', 'tx0'))
qube.apply_op(qa, ('rem', 'test', 'abc', 'tx456'))
qube.apply_op(qb, ('add', 'test', 'abc', 'tx0'))
qube.apply_op(qb, ('rem', 'test', 'abc', 'tx456'))
qube.rollback(qa, 'tx456')
qube.apply_op(qa, ('add', 'test', 'def', 'tx789'))
qube.apply_op(qb, ('add', 'test', 'ghi', 'tx321'))
def doraise(a, b):
raise riak.Conflict('the_vclock',
'x/zzz',
[StubDbResult(qube.to_json(qa)),
StubDbResult(qube.to_json(qb))])
db.get.side_effect = doraise
m = yield from FooModel.read(db, rollback, 'zzz')
assert_that(m.qube['journal'], has_length(3))
assert_that(m.qube['data'], has_entry('test', {'abc', 'def', 'ghi'}))
assert_that(db.save, called_once_with('foo_bucket',
'zzz',
has_key('data')))
def test_read_performs_rollback():
db = StubDb()
rollback = StubRollback()
rollback.txs = ('tx123',)
qa = qube.init({'test': set()})
qube.apply_op(qa, ('add', 'test', 'abc', 'tx0'))
qube.apply_op(qa, ('add', 'test', 'def', 'tx123'))
qube.apply_op(qa, ('add', 'test', 'ghi', 'tx456'))
db.get.return_value = StubDbResult(qube.to_json(qa), key='zzz')
m = yield from FooModel.read(db, rollback, 'zzz')
assert_that(m.qube['journal'], has_length(2))
assert_that(m.qube['data'], has_entry('test', {'abc', 'ghi'}))
assert_that(db.save, called_once_with('foo_bucket',
'zzz',
has_key('data')))
