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import dataclasses
import datetime
import enum
import sys
import uuid
from decimal import Decimal
from typing import Dict, FrozenSet, List, Set, Tuple
import pytest
import msgspec
try:
import yaml # noqa
except ImportError:
pytestmark = pytest.mark.skip(reason="PyYAML is not installed")
UTC = datetime.timezone.utc
class ExStruct(msgspec.Struct):
x: int
y: str
@dataclasses.dataclass
class ExDataclass:
x: int
y: str
class ExEnum(enum.Enum):
one = "one"
two = "two"
class ExIntEnum(enum.IntEnum):
one = 1
two = 2
def test_module_dir():
assert set(dir(msgspec.yaml)) == {"encode", "decode"}
def test_pyyaml_not_installed_error(monkeypatch):
monkeypatch.setitem(sys.modules, "yaml", None)
with pytest.raises(ImportError, match="PyYAML"):
msgspec.yaml.encode(1)
with pytest.raises(ImportError, match="PyYAML"):
msgspec.yaml.decode("1", type=int)
@pytest.mark.parametrize(
"val",
[
None,
True,
False,
1,
1.5,
"fizz",
datetime.datetime(2022, 1, 2, 3, 4, 5, 6),
datetime.datetime(2022, 1, 2, 3, 4, 5, 6, UTC),
datetime.date(2022, 1, 2),
[1, 2],
{"one": 2},
{1: "two"},
],
)
def test_roundtrip_any(val):
msg = msgspec.yaml.encode(val)
res = msgspec.yaml.decode(msg)
assert res == val
@pytest.mark.parametrize(
"val, type",
[
(None, None),
(True, bool),
(False, bool),
(1, int),
(1.5, float),
("fizz", str),
(b"fizz", bytes),
(b"fizz", bytearray),
(datetime.datetime(2022, 1, 2, 3, 4, 5, 6), datetime.datetime),
(datetime.datetime(2022, 1, 2, 3, 4, 5, 6, UTC), datetime.datetime),
(datetime.date(2022, 1, 2), datetime.date),
(datetime.time(12, 34), datetime.time),
(uuid.uuid4(), uuid.UUID),
(ExEnum.one, ExEnum),
(ExIntEnum.one, ExIntEnum),
([1, 2], List[int]),
((1, 2), Tuple[int, ...]),
({1, 2}, Set[int]),
(frozenset({1, 2}), FrozenSet[int]),
(("one", 2), Tuple[str, int]),
({"one": 2}, Dict[str, int]),
({1: "two"}, Dict[int, str]),
(ExStruct(1, "two"), ExStruct),
(ExDataclass(1, "two"), ExDataclass),
],
)
def test_roundtrip_typed(val, type):
msg = msgspec.yaml.encode(val)
res = msgspec.yaml.decode(msg, type=type)
assert res == val
def test_encode_error():
class Oops:
pass
with pytest.raises(TypeError, match="Encoding objects of type Oops is unsupported"):
msgspec.yaml.encode(Oops())
def test_encode_enc_hook():
msg = msgspec.yaml.encode(Decimal(1.5), enc_hook=str)
assert msgspec.yaml.decode(msg) == "1.5"
@pytest.mark.parametrize("order", [None, "deterministic"])
def test_encode_order(order):
msg = {"y": 1, "x": 2, "z": 3}
res = msgspec.yaml.encode(msg, order=order)
sol = yaml.safe_dump(msg, sort_keys=bool(order)).encode("utf-8")
assert res == sol
def test_decode_str_or_bytes_like():
assert msgspec.yaml.decode("[1, 2]") == [1, 2]
assert msgspec.yaml.decode(b"[1, 2]") == [1, 2]
assert msgspec.yaml.decode(bytearray(b"[1, 2]")) == [1, 2]
assert msgspec.yaml.decode(memoryview(b"[1, 2]")) == [1, 2]
with pytest.raises(TypeError):
msgspec.yaml.decode(1)
@pytest.mark.parametrize("msg", [b"{{", b"!!binary 123"])
def test_decode_parse_error(msg):
with pytest.raises(msgspec.DecodeError):
msgspec.yaml.decode(msg)
def test_decode_validation_error():
with pytest.raises(msgspec.ValidationError, match="Expected `str`"):
msgspec.yaml.decode(b"[1, 2, 3]", type=List[str])
@pytest.mark.parametrize("strict", [True, False])
def test_decode_strict_or_lax(strict):
msg = b"a: ['1', '2']"
typ = Dict[str, List[int]]
if strict:
with pytest.raises(msgspec.ValidationError, match="Expected `int`"):
msgspec.yaml.decode(msg, type=typ, strict=strict)
else:
res = msgspec.yaml.decode(msg, type=typ, strict=strict)
assert res == {"a": [1, 2]}
def test_decode_dec_hook():
def dec_hook(typ, val):
if typ is Decimal:
return Decimal(val)
raise TypeError
res = msgspec.yaml.decode("'1.5'", type=Decimal, dec_hook=dec_hook)
assert res == Decimal("1.5")
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