1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
"""Tests for defaultdicts."""
from collections import defaultdict
from typing import DefaultDict
from cattrs import Converter
from cattrs.cols import defaultdict_structure_factory
def test_typing_defaultdicts(genconverter: Converter):
"""`typing.DefaultDict` works."""
res = genconverter.structure({"a": 1}, DefaultDict[str, int])
assert isinstance(res, defaultdict)
assert res["a"] == 1
assert res["b"] == 0
genconverter.register_unstructure_hook(int, str)
assert genconverter.unstructure(res) == {"a": "1", "b": "0"}
def test_collection_defaultdicts(genconverter: Converter):
"""`collections.defaultdict` works."""
res = genconverter.structure({"a": 1}, defaultdict[str, int])
assert isinstance(res, defaultdict)
assert res["a"] == 1
assert res["b"] == 0
genconverter.register_unstructure_hook(int, str)
assert genconverter.unstructure(res) == {"a": "1", "b": "0"}
def test_factory(genconverter: Converter):
"""Explicit factories work."""
genconverter.register_structure_hook_func(
lambda t: t == defaultdict[str, int],
defaultdict_structure_factory(defaultdict[str, int], genconverter, lambda: 2),
)
res = genconverter.structure({"a": 1}, defaultdict[str, int])
assert isinstance(res, defaultdict)
assert res["a"] == 1
assert res["b"] == 2
|
