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chore: import upstream snapshot with attribution
2026-07-13 12:01:50 +08:00

85 lines
3.3 KiB
Python

import pytest
from unittest.mock import patch, MagicMock
from curl_cffi.curl import CurlError
from scrapling.engines.static import _SyncSessionLogic as FetcherSession, FetcherClient
from scrapling.engines.toolbelt import ProxyRotator
class TestFetcherSession:
"""Test FetcherSession functionality"""
def test_fetcher_session_creation(self):
"""Test FetcherSession creation"""
session = FetcherSession(timeout=30, retries=3, stealthy_headers=True)
assert session._default_timeout == 30
assert session._default_retries == 3
def test_fetcher_session_context_manager(self):
"""Test FetcherSession as a context manager"""
session = FetcherSession()
with session as s:
assert s == session
assert session._curl_session is not None
# Session should be cleaned up
def test_fetcher_session_double_enter(self):
"""Test error on double entering"""
session = FetcherSession()
with session:
with pytest.raises(RuntimeError):
session.__enter__()
def test_fetcher_client_creation(self):
"""Test FetcherClient creation"""
client = FetcherClient()
# Should not have context manager methods
assert client.__enter__ is None
assert client.__exit__ is None
def test_session_level_proxy_is_applied(self):
"""Session-level proxy must reach the request, not be silently dropped (#295)"""
proxy = "http://10.255.255.1:9999"
with FetcherSession(proxy=proxy) as session:
with (
patch.object(session._curl_session, "request") as mocked_request,
patch("scrapling.engines.static.ResponseFactory.from_http_request", return_value=MagicMock()),
):
session.get("http://example.com")
assert mocked_request.call_args.kwargs["proxy"] == proxy
def test_per_request_proxy_overrides_session_proxy(self):
"""A per-request proxy must take precedence over the session-level proxy"""
request_proxy = "http://10.255.255.2:9999"
with FetcherSession(proxy="http://10.255.255.1:9999") as session:
with (
patch.object(session._curl_session, "request") as mocked_request,
patch("scrapling.engines.static.ResponseFactory.from_http_request", return_value=MagicMock()),
):
session.get("http://example.com", proxy=request_proxy)
assert mocked_request.call_args.kwargs["proxy"] == request_proxy
def test_proxy_rotates_per_retry_attempt(self):
"""With a rotator, every retry attempt must pull a fresh proxy"""
rotator = ProxyRotator(["http://p1:8080", "http://p2:8080"])
with FetcherSession(proxy_rotator=rotator, retries=2, retry_delay=0) as session:
with (
patch.object(session._curl_session, "request") as mocked_request,
patch("scrapling.engines.static.ResponseFactory.from_http_request", return_value=MagicMock()),
):
mocked_request.side_effect = [CurlError("transient"), MagicMock()]
session.get("http://example.com")
proxies_used = [call.kwargs["proxy"] for call in mocked_request.call_args_list]
assert proxies_used == ["http://p1:8080", "http://p2:8080"]