def test_file_memory_node():
mem = FileMemory(filename, tree_conf)
with pytest.raises(ReachedEndOfFile):
mem.get_node(3)
mem.set_node(node)
assert node == mem.get_node(3)
mem.close()
def test_file_memory_write_transaction():
mem = FileMemory(filename, tree_conf)
mem._lock = mock.Mock()
assert mem._wal._not_committed_pages == {}
assert mem._wal._committed_pages == {}
with mem.write_transaction:
mem.set_node(node)
assert mem._wal._not_committed_pages == {3: 9}
assert mem._wal._committed_pages == {}
assert mem._lock.writer_lock.acquire.call_count == 1
assert mem._wal._not_committed_pages == {}
assert mem._wal._committed_pages == {3: 9}
assert mem._lock.writer_lock.release.call_count == 1
assert mem._lock.reader_lock.acquire.call_count == 0
with mem.read_transaction:
assert mem._lock.reader_lock.acquire.call_count == 1
assert node == mem.get_node(3)
assert mem._lock.reader_lock.release.call_count == 1
mem.close()
def test_file_memory_repr():
mem = FileMemory(filename, tree_conf)
assert repr(mem) == '<FileMemory: {}>'.format(filename)
mem.close()