import pytest
from bptree.entry import Record, Reference, OpaqueData, NOT_LOADED
from bptree.const import TreeConf
from bptree.serializer import IntSerializer, StrSerializer
tree_conf = TreeConf(4096, 4, 16, 16, IntSerializer())
def test_record_int_serialization():
r1 = Record(tree_conf, 42, b'foo')
data = r1.dump()
r2 = Record(tree_conf, data=data)
assert r1 == r2
assert r1.value == r2.value
assert r1.overflow_page == r2.overflow_page
def test_record_str_serialization():
tree_conf = TreeConf(4096, 4, 40, 40, StrSerializer())
r1 = Record(tree_conf, '0', b'0')
data = r1.dump()
r2 = Record(tree_conf, data=data)
assert r1 == r2
assert r1.value == r2.value
assert r1.overflow_page == r2.overflow_page
def test_record_int_serialization_overflow_value():
def test_serializer_slots():
s = IntSerializer()
with pytest.raises(AttributeError):
s.foo = True
def test_get_node_from_page_data():
data = (2).to_bytes(1, ENDIAN) + bytes(4096 - 1)
tree_conf = TreeConf(4096, 7, 16, 16, IntSerializer())
assert isinstance(Node.from_page_data(tree_conf, data, 4), RootNode)
def test_int_serializer():
s = IntSerializer()
assert s.serialize(42, 2) == b'*\x00'
assert s.deserialize(b'*\x00') == 42
assert repr(s) == 'IntSerializer()'
def test_node_limit_children(klass, order, min_children, max_children):
node = klass(TreeConf(4096, order, 16, 16, IntSerializer()))
assert node.min_children == min_children
assert node.max_children == max_children