/
test_fingerprints.py
170 lines (136 loc) · 5.37 KB
/
test_fingerprints.py
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# -*- coding: utf-8 -*-
from __future__ import absolute_import
from copy import deepcopy
import pytest
import scrapy
from scrapy.dupefilters import request_fingerprint
from scrapy_splash import SplashRequest
from scrapy_splash.dupefilter import splash_request_fingerprint
from scrapy_splash.utils import dict_hash
from .test_middleware import _get_mw
def test_dict_hash():
h1 = dict_hash({"foo": "bar", "bar": "baz"})
h2 = dict_hash({"foo": "bar", "bar": "baz"})
assert h1 == h2
h3 = dict_hash({"egg": "spam"})
assert h3 != h2
def test_dict_hash_nested():
h1 = dict_hash({"foo": "bar", "bar": {"baz": "spam"}})
h2 = dict_hash({"foo": "bar", "bar": {"baz": "spam"}})
assert h1 == h2
h3 = dict_hash({"foo": "bar", "bar": {"baz": "egg"}})
h4 = dict_hash({"foo": "bar", "bar": {"bam": "spam"}})
assert h3 != h2
assert h4 != h2
def test_dict_hash_non_strings():
h1 = dict_hash({"foo": "bar", "float": 1.1, "int": 2, "bool": False,
"seq": ["x", "y", (2, 3.7, {"x": 5, "y": [6, 7]})]})
h2 = dict_hash({"foo": "bar", "float": 1.2, "int": 2, "bool": False})
assert h1 != h2
def test_dict_hash_invalid():
with pytest.raises(ValueError):
dict_hash({"foo": scrapy})
def test_request_fingerprint_nosplash():
r1 = scrapy.Request("http://example.com")
r2 = scrapy.Request("http://example.com", meta={"foo": "bar"})
assert request_fingerprint(r1) == splash_request_fingerprint(r1)
assert request_fingerprint(r1) == request_fingerprint(r2)
assert request_fingerprint(r1) == splash_request_fingerprint(r2)
def assert_fingerprints_match(r1, r2):
assert splash_request_fingerprint(r1) == splash_request_fingerprint(r2)
def assert_fingerprints_dont_match(r1, r2):
assert splash_request_fingerprint(r1) != splash_request_fingerprint(r2)
def test_request_fingerprint_splash():
r1 = scrapy.Request("http://example.com")
r2 = scrapy.Request("http://example.com", meta={"splash": {"args": {"html": 1}}})
r3 = scrapy.Request("http://example.com", meta={"splash": {"args": {"png": 1}}})
r4 = scrapy.Request("http://example.com", meta={"foo": "bar", "splash": {"args": {"html": 1}}})
r5 = scrapy.Request("http://example.com", meta={"splash": {"args": {"html": 1, "wait": 1.0}}})
assert request_fingerprint(r1) == request_fingerprint(r2)
assert_fingerprints_dont_match(r1, r2)
assert_fingerprints_dont_match(r1, r3)
assert_fingerprints_dont_match(r1, r4)
assert_fingerprints_dont_match(r1, r5)
assert_fingerprints_dont_match(r2, r3)
# only "splash" contents is taken into account
assert_fingerprints_match(r2, r4)
@pytest.fixture()
def splash_middleware():
return _get_mw()
@pytest.fixture
def splash_mw_process(splash_middleware):
def _process(r):
r_copy = r.replace(meta=deepcopy(r.meta))
return splash_middleware.process_request(r_copy, None) or r
return _process
@pytest.fixture()
def requests():
url1 = "http://example.com/foo?x=1&y=2"
url2 = "http://example.com/foo?y=2&x=1"
url3 = "http://example.com/foo?x=1&y=2&z=3"
url4 = "http://example.com/foo?x=1&y=2#id2"
url5 = "http://example.com/foo?x=1&y=2#!id2"
request_kwargs = [
dict(url=url1), # 0
dict(url=url1, method='POST'), # 1
dict(url=url1, endpoint='render.har'), # 2
dict(url=url2), # 3
dict(url=url1, args={'wait': 0.5}), # 4
dict(url=url2, args={'wait': 0.5}), # 5
dict(url=url3), # 6
dict(url=url2, method='POST'), # 7
dict(url=url3, args={'wait': 0.5}), # 8
dict(url=url3, args={'wait': 0.5}), # 9
dict(url=url3, args={'wait': 0.7}), # 10
dict(url=url4), # 11
]
splash_requests = [SplashRequest(**kwargs) for kwargs in request_kwargs]
scrapy_requests = [
scrapy.Request(url=url1), # 12
scrapy.Request(url=url2), # 13
scrapy.Request(url=url4), # 14
scrapy.Request(url=url5), # 15
]
return splash_requests + scrapy_requests
@pytest.mark.parametrize(["i", "dupe_indices"], [
(0, {3}),
(1, {7}),
(2, set()),
(3, {0}),
(4, {5}),
(5, {4}),
(6, set()),
(7, {1}),
(8, {9}),
(9, {8}),
(10, set()),
(11, set()),
(12, {13, 14}),
(13, {12, 14}),
(14, {13, 12}),
(15, set()),
])
def test_duplicates(i, dupe_indices, requests, splash_mw_process):
def assert_not_filtered(r1, r2):
assert_fingerprints_dont_match(r1, r2)
assert_fingerprints_dont_match(
splash_mw_process(r1),
splash_mw_process(r2),
)
def assert_filtered(r1, r2):
# request is filtered if it is filtered either
# before rescheduling or after
fp1 = splash_request_fingerprint(r1)
fp2 = splash_request_fingerprint(r2)
if fp1 != fp2:
assert_fingerprints_match(
splash_mw_process(r1),
splash_mw_process(r2),
)
dupe_indices = set(dupe_indices)
dupe_indices.add(i)
non_dupe_indices = set(range(len(requests))) - dupe_indices
for j in dupe_indices:
assert_filtered(requests[i], requests[j])
for j in non_dupe_indices:
assert_not_filtered(requests[i], requests[j])