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import dataclasses
import datetime
import json
from decimal import Decimal
import attr
from twisted.internet import defer
from scrapy.http import Request, Response
from scrapy.utils.serialize import ScrapyJSONEncoder
class TestJsonEncoder:
def setup_method(self):
self.encoder = ScrapyJSONEncoder(sort_keys=True)
def test_encode_decode(self):
dt = datetime.datetime(2010, 1, 2, 10, 11, 12)
dts = "2010-01-02 10:11:12"
d = datetime.date(2010, 1, 2)
ds = "2010-01-02"
t = datetime.time(10, 11, 12)
ts = "10:11:12"
dec = Decimal("1000.12")
decs = "1000.12"
s = {"foo"}
ss = ["foo"]
dt_set = {dt}
dt_sets = [dts]
for input, output in [
("foo", "foo"),
(d, ds),
(t, ts),
(dt, dts),
(dec, decs),
(["foo", d], ["foo", ds]),
(s, ss),
(dt_set, dt_sets),
]:
assert self.encoder.encode(input) == json.dumps(output, sort_keys=True)
def test_encode_deferred(self):
assert "Deferred" in self.encoder.encode(defer.Deferred())
def test_encode_request(self):
r = Request("http://www.example.com/lala")
rs = self.encoder.encode(r)
assert r.method in rs
assert r.url in rs
def test_encode_response(self):
r = Response("http://www.example.com/lala")
rs = self.encoder.encode(r)
assert r.url in rs
assert str(r.status) in rs
def test_encode_dataclass_item(self) -> None:
@dataclasses.dataclass
class TestDataClass:
name: str
url: str
price: int
item = TestDataClass(name="Product", url="http://product.org", price=1)
encoded = self.encoder.encode(item)
assert encoded == '{"name": "Product", "price": 1, "url": "http://product.org"}'
def test_encode_attrs_item(self):
@attr.s
class AttrsItem:
name = attr.ib(type=str)
url = attr.ib(type=str)
price = attr.ib(type=int)
item = AttrsItem(name="Product", url="http://product.org", price=1)
encoded = self.encoder.encode(item)
assert encoded == '{"name": "Product", "price": 1, "url": "http://product.org"}'
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