def test_switch_table_record_can_be_updated():
table = SwitchTable()
table.add(13, connection='wifi', next_hop=5)
link = table[13]
link.connection = 'ge'
link.next_hop = 24
assert table.as_dict() == {13: ('ge', 24)}
def test_switch_table_add_replaces_existing_record():
table = SwitchTable()
table.add(10, connection='eth0', next_hop=4)
assert table.as_dict() == {10: ('eth0', 4)}
table.add(10, connection='wifi', next_hop=9)
assert table.as_dict() == {10: ('wifi', 9)}
def test_switch_table_as_dict_returns_read_only_dict():
table = SwitchTable()
with pytest.raises(TypeError):
table.as_dict()[13] = ('illegal', 66)
def test_switch_table_add_and_as_tuple_methods():
table = SwitchTable()
table.add(10, connection='eth0', next_hop=4)
table.add(22, connection='eth1', next_hop=3)
assert table.as_dict() == {10: ('eth0', 4), 22: ('eth1', 3)}