mirror of https://github.com/scrapy/scrapy.git
1370 lines
44 KiB
Python
1370 lines
44 KiB
Python
from __future__ import annotations
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import csv
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import json
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import logging
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import marshal
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import pickle
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import tempfile
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from logging import getLogger
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from pathlib import Path
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from typing import IO, TYPE_CHECKING, Any
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from unittest import mock
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import lxml.etree
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import pytest
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from w3lib.url import file_uri_to_path
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import scrapy
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from scrapy import Spider, signals
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from scrapy.exceptions import NotConfigured
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from scrapy.exporters import CsvItemExporter, JsonItemExporter
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from scrapy.extensions.feedexport import (
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BlockingFeedStorage,
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FeedExporter,
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FeedSlot,
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FileFeedStorage,
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apply_uri_params,
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)
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from scrapy.utils.python import to_unicode
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from scrapy.utils.test import get_crawler
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from tests.spiders import ItemSpider
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from tests.utils.bases.feedexport import TestFeedExportBase
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from tests.utils.decorators import coroutine_test, inline_callbacks_test
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from tests.utils.feedexport import MyItem, MyItem2, path_to_url, printf_escape
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if TYPE_CHECKING:
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from collections.abc import Awaitable, Callable, Iterable
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class FromCrawlerMixin:
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init_with_crawler = False
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@classmethod
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def from_crawler(cls, crawler, *args, feed_options=None, **kwargs):
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cls.init_with_crawler = True
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return cls(*args, **kwargs)
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class FromCrawlerCsvItemExporter(CsvItemExporter, FromCrawlerMixin):
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pass
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class FromCrawlerFileFeedStorage(FileFeedStorage, FromCrawlerMixin):
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@classmethod
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def from_crawler(cls, crawler, *args, feed_options=None, **kwargs):
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cls.init_with_crawler = True
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return cls(*args, feed_options=feed_options, **kwargs)
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class DummyBlockingFeedStorage(BlockingFeedStorage):
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def __init__(self, uri, *args, feed_options=None):
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self.path = Path(file_uri_to_path(uri))
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def _store_in_thread(self, file):
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dirname = self.path.parent
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if dirname and not dirname.exists():
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dirname.mkdir(parents=True)
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with self.path.open("ab") as output_file:
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output_file.write(file.read())
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file.close()
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class FailingBlockingFeedStorage(DummyBlockingFeedStorage):
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def _store_in_thread(self, file):
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file.close()
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raise OSError("Cannot store")
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class LogOnStoreFileStorage:
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"""
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This storage logs inside `store` method.
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It can be used to make sure `store` method is invoked.
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"""
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def __init__(self, uri, feed_options=None):
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self.path = file_uri_to_path(uri)
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self.logger = getLogger()
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def open(self, spider):
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return tempfile.NamedTemporaryFile(prefix="feed-")
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def store(self, file):
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self.logger.info("Storage.store is called")
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file.close()
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class InstrumentedFeedSlot(FeedSlot):
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"""Instrumented FeedSlot subclass for keeping track of calls to
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start_exporting and finish_exporting."""
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def start_exporting(self):
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self.update_listener("start")
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super().start_exporting()
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def finish_exporting(self):
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self.update_listener("finish")
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super().finish_exporting()
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@classmethod
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def subscribe__listener(cls, listener):
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cls.update_listener = listener.update
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class IsExportingListener:
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"""When subscribed to InstrumentedFeedSlot, keeps track of when
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a call to start_exporting has been made without a closing call to
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finish_exporting and when a call to finish_exporting has been made
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before a call to start_exporting."""
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def __init__(self):
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self.start_without_finish = False
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self.finish_without_start = False
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def update(self, method):
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if method == "start":
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self.start_without_finish = True
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elif method == "finish":
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if self.start_without_finish:
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self.start_without_finish = False
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else:
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self.finish_without_start = True
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class ExceptionJsonItemExporter(JsonItemExporter):
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"""JsonItemExporter that throws an exception every time export_item is called."""
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def export_item(self, _):
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raise RuntimeError("foo")
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class TestFeedExport(TestFeedExportBase):
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async def run_and_export(
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self, spider_cls: type[Spider], settings: dict[str, Any]
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) -> dict[str, Any]:
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"""Run spider with specified settings; return exported data."""
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FEEDS = settings.get("FEEDS") or {}
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settings["FEEDS"] = {
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printf_escape(path_to_url(file_path)): feed_options
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for file_path, feed_options in FEEDS.items()
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}
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content: dict[str, Any] = {}
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try:
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spider_cls.start_urls = [self.mockserver.url("/")]
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crawler = get_crawler(spider_cls, settings)
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await crawler.crawl_async()
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for file_path, feed_options in FEEDS.items():
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content[feed_options["format"]] = (
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Path(file_path).read_bytes() if Path(file_path).exists() else None
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)
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finally:
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for file_path in FEEDS:
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if not Path(file_path).exists():
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continue
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Path(file_path).unlink()
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return content
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async def assertExportedCsv(
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self,
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items: Iterable[Any],
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header: Iterable[str],
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rows: Iterable[dict[str, Any]],
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settings: dict[str, Any] | None = None,
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) -> None:
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settings = settings or {}
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settings.update(
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{
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"FEEDS": {
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self._random_temp_filename(): {"format": "csv"},
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},
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}
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)
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data = await self.exported_data(items, settings)
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reader = csv.DictReader(to_unicode(data["csv"]).splitlines())
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assert reader.fieldnames == list(header)
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assert rows == list(reader)
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async def assertExportedJsonLines(
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self,
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items: Iterable[Any],
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rows: Iterable[dict[str, Any]],
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settings: dict[str, Any] | None = None,
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) -> None:
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settings = settings or {}
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settings.update(
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{
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"FEEDS": {
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self._random_temp_filename(): {"format": "jl"},
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},
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}
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)
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data = await self.exported_data(items, settings)
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parsed = [json.loads(to_unicode(line)) for line in data["jl"].splitlines()]
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rows = [{k: v for k, v in row.items() if v} for row in rows]
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assert rows == parsed
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async def assertExportedXml(
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self,
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items: Iterable[Any],
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rows: Iterable[dict[str, Any]],
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settings: dict[str, Any] | None = None,
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) -> None:
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settings = settings or {}
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settings.update(
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{
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"FEEDS": {
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self._random_temp_filename(): {"format": "xml"},
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},
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}
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)
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data = await self.exported_data(items, settings)
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rows = [{k: v for k, v in row.items() if v} for row in rows]
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root = lxml.etree.fromstring(data["xml"])
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got_rows = [{e.tag: e.text for e in it} for it in root.findall("item")]
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assert rows == got_rows
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async def assertExportedMultiple(
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self,
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items: Iterable[Any],
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rows: Iterable[dict[str, Any]],
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settings: dict[str, Any] | None = None,
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) -> None:
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settings = settings or {}
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settings.update(
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{
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"FEEDS": {
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self._random_temp_filename(): {"format": "xml"},
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self._random_temp_filename(): {"format": "json"},
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},
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}
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)
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data = await self.exported_data(items, settings)
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rows = [{k: v for k, v in row.items() if v} for row in rows]
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# XML
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root = lxml.etree.fromstring(data["xml"])
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xml_rows = [{e.tag: e.text for e in it} for it in root.findall("item")]
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assert rows == xml_rows
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# JSON
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json_rows = json.loads(to_unicode(data["json"]))
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assert rows == json_rows
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async def assertExportedPickle(
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self,
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items: Iterable[Any],
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rows: Iterable[dict[str, Any]],
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settings: dict[str, Any] | None = None,
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) -> None:
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settings = settings or {}
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settings.update(
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{
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"FEEDS": {
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self._random_temp_filename(): {"format": "pickle"},
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},
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}
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)
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data = await self.exported_data(items, settings)
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expected = [{k: v for k, v in row.items() if v} for row in rows]
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result = self._load_until_eof(data["pickle"], load_func=pickle.load)
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assert result == expected
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async def assertExportedMarshal(
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self,
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items: Iterable[Any],
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rows: Iterable[dict[str, Any]],
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settings: dict[str, Any] | None = None,
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) -> None:
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settings = settings or {}
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settings.update(
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{
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"FEEDS": {
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self._random_temp_filename(): {"format": "marshal"},
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},
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}
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)
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data = await self.exported_data(items, settings)
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expected = [{k: v for k, v in row.items() if v} for row in rows]
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result = self._load_until_eof(data["marshal"], load_func=marshal.load)
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assert result == expected
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@inline_callbacks_test
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def test_stats_file_success(self):
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settings = {
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"FEEDS": {
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printf_escape(path_to_url(str(self._random_temp_filename()))): {
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"format": "json",
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}
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},
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}
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crawler = get_crawler(ItemSpider, settings)
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yield crawler.crawl(mockserver=self.mockserver)
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assert "feedexport/success_count/FileFeedStorage" in crawler.stats.get_stats()
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assert crawler.stats.get_value("feedexport/success_count/FileFeedStorage") == 1
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@inline_callbacks_test
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def test_stats_file_failed(self):
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settings = {
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"FEEDS": {
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printf_escape(path_to_url(str(self._random_temp_filename()))): {
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"format": "json",
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}
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},
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}
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crawler = get_crawler(ItemSpider, settings)
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def store(file: IO[bytes]) -> None:
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file.close()
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raise KeyError("foo")
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with mock.patch(
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"scrapy.extensions.feedexport.FileFeedStorage.store",
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side_effect=store,
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):
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yield crawler.crawl(mockserver=self.mockserver)
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assert "feedexport/failed_count/FileFeedStorage" in crawler.stats.get_stats()
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assert crawler.stats.get_value("feedexport/failed_count/FileFeedStorage") == 1
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@inline_callbacks_test
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def test_stats_multiple_file(self):
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settings = {
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"FEEDS": {
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printf_escape(path_to_url(str(self._random_temp_filename()))): {
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"format": "json",
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},
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"stdout:": {
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"format": "xml",
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},
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},
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}
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crawler = get_crawler(ItemSpider, settings)
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yield crawler.crawl(mockserver=self.mockserver)
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assert "feedexport/success_count/FileFeedStorage" in crawler.stats.get_stats()
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assert "feedexport/success_count/StdoutFeedStorage" in crawler.stats.get_stats()
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assert crawler.stats.get_value("feedexport/success_count/FileFeedStorage") == 1
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assert (
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crawler.stats.get_value("feedexport/success_count/StdoutFeedStorage") == 1
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)
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@coroutine_test
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async def test_export_items(self):
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# feed exporters use field names from Item
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items = [
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MyItem({"foo": "bar1", "egg": "spam1"}),
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MyItem({"foo": "bar2", "egg": "spam2", "baz": "quux2"}),
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]
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rows = [
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{"egg": "spam1", "foo": "bar1", "baz": ""},
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{"egg": "spam2", "foo": "bar2", "baz": "quux2"},
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]
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header = MyItem.fields.keys()
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await self.assertExported(items, header, rows)
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@coroutine_test
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async def test_pathlib_uri_with_placeholders(self):
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feed_dir = Path(self.temp_dir, "pathlib_placeholders")
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feed_dir.mkdir()
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items = [MyItem({"foo": "bar1", "egg": "spam1"})]
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class TestSpider(scrapy.Spider):
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name = "testspider"
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def parse(self, response):
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yield from items
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TestSpider.start_urls = [self.mockserver.url("/")]
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settings = {
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"FEEDS": {
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feed_dir / "%(time)s.json": {"format": "json"},
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},
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}
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crawler = get_crawler(TestSpider, settings)
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await crawler.crawl_async()
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files = list(feed_dir.iterdir())
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assert len(files) == 1
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assert "%(time)s" not in files[0].name
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assert files[0].suffix == ".json"
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@coroutine_test
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async def test_pathlib_uri_with_spaces_and_unicode(self):
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# A pathlib.Path key with spaces and non-ASCII characters must be kept
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# verbatim (not percent-encoded), while %()s placeholders are still
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# substituted. %(name)s resolves to the spider name deterministically,
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# so the resulting file name can be asserted exactly.
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feed_dir = Path(self.temp_dir, "pathlib_spaces_unicode")
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feed_dir.mkdir()
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items = [MyItem({"foo": "bar1", "egg": "spam1"})]
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class TestSpider(scrapy.Spider):
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name = "testspider"
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def parse(self, response):
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yield from items
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TestSpider.start_urls = [self.mockserver.url("/")]
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settings = {
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"FEEDS": {
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feed_dir / "out %(name)s ünïcode.json": {"format": "json"},
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},
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}
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crawler = get_crawler(TestSpider, settings)
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await crawler.crawl_async()
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files = list(feed_dir.iterdir())
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assert len(files) == 1
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assert files[0].name == "out testspider ünïcode.json"
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@coroutine_test
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async def test_str_uri_with_percent_encoding_and_placeholder(self):
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# A percent-encoded string URI (e.g. %20 for a space) must reach
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# storage verbatim rather than being misinterpreted as a printf
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# directive, while %()s placeholders are still substituted. See #6425
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# and #5794.
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feed_dir = Path(self.temp_dir, "dir with spaces")
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feed_dir.mkdir()
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items = [MyItem({"foo": "bar1", "egg": "spam1"})]
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|
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class TestSpider(scrapy.Spider):
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name = "testspider"
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def parse(self, response):
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yield from items
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TestSpider.start_urls = [self.mockserver.url("/")]
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settings = {
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"FEEDS": {
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f"{feed_dir.as_uri()}/%(time)s.json": {"format": "json"},
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},
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}
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crawler = get_crawler(TestSpider, settings)
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await crawler.crawl_async()
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|
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files = list(feed_dir.iterdir())
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assert len(files) == 1
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assert "%(time)s" not in files[0].name
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assert files[0].suffix == ".json"
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|
|
@coroutine_test
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async def test_export_no_items_not_store_empty(self):
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for fmt in ("json", "jsonlines", "xml", "csv"):
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settings = {
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"FEEDS": {
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self._random_temp_filename(): {"format": fmt},
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},
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"FEED_STORE_EMPTY": False,
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}
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data = await self.exported_no_data(settings)
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assert data[fmt] is None
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|
|
@coroutine_test
|
|
async def test_start_finish_exporting_items(self):
|
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items = [
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MyItem({"foo": "bar1", "egg": "spam1"}),
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]
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settings = {
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"FEEDS": {
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self._random_temp_filename(): {"format": "json"},
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},
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"FEED_EXPORT_INDENT": None,
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}
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|
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listener = IsExportingListener()
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InstrumentedFeedSlot.subscribe__listener(listener)
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|
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with mock.patch("scrapy.extensions.feedexport.FeedSlot", InstrumentedFeedSlot):
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await self.exported_data(items, settings)
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assert not listener.start_without_finish
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assert not listener.finish_without_start
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|
|
@coroutine_test
|
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async def test_start_finish_exporting_no_items(self):
|
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items = []
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settings = {
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"FEEDS": {
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self._random_temp_filename(): {"format": "json"},
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},
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"FEED_EXPORT_INDENT": None,
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}
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|
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listener = IsExportingListener()
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InstrumentedFeedSlot.subscribe__listener(listener)
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|
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with mock.patch("scrapy.extensions.feedexport.FeedSlot", InstrumentedFeedSlot):
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await self.exported_data(items, settings)
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assert not listener.start_without_finish
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assert not listener.finish_without_start
|
|
|
|
@coroutine_test
|
|
async def test_start_finish_exporting_items_exception(self):
|
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items = [
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MyItem({"foo": "bar1", "egg": "spam1"}),
|
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]
|
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settings = {
|
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"FEEDS": {
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self._random_temp_filename(): {"format": "json"},
|
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},
|
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"FEED_EXPORTERS": {"json": ExceptionJsonItemExporter},
|
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"FEED_EXPORT_INDENT": None,
|
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}
|
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|
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listener = IsExportingListener()
|
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InstrumentedFeedSlot.subscribe__listener(listener)
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|
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with mock.patch("scrapy.extensions.feedexport.FeedSlot", InstrumentedFeedSlot):
|
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await self.exported_data(items, settings)
|
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assert not listener.start_without_finish
|
|
assert not listener.finish_without_start
|
|
|
|
@coroutine_test
|
|
async def test_start_finish_exporting_no_items_exception(self):
|
|
items = []
|
|
settings = {
|
|
"FEEDS": {
|
|
self._random_temp_filename(): {"format": "json"},
|
|
},
|
|
"FEED_EXPORTERS": {"json": ExceptionJsonItemExporter},
|
|
"FEED_EXPORT_INDENT": None,
|
|
}
|
|
|
|
listener = IsExportingListener()
|
|
InstrumentedFeedSlot.subscribe__listener(listener)
|
|
|
|
with mock.patch("scrapy.extensions.feedexport.FeedSlot", InstrumentedFeedSlot):
|
|
await self.exported_data(items, settings)
|
|
assert not listener.start_without_finish
|
|
assert not listener.finish_without_start
|
|
|
|
@coroutine_test
|
|
async def test_export_no_items_store_empty(self):
|
|
formats = (
|
|
("json", b"[]"),
|
|
("jsonlines", b""),
|
|
("xml", b'<?xml version="1.0" encoding="utf-8"?>\n<items></items>'),
|
|
("csv", b""),
|
|
)
|
|
|
|
for fmt, expctd in formats:
|
|
settings = {
|
|
"FEEDS": {
|
|
self._random_temp_filename(): {"format": fmt},
|
|
},
|
|
"FEED_STORE_EMPTY": True,
|
|
"FEED_EXPORT_INDENT": None,
|
|
}
|
|
data = await self.exported_no_data(settings)
|
|
assert expctd == data[fmt]
|
|
|
|
@coroutine_test
|
|
async def test_export_no_items_multiple_feeds(
|
|
self, caplog: pytest.LogCaptureFixture
|
|
) -> None:
|
|
"""Make sure that `storage.store` is not called."""
|
|
settings = {
|
|
"FEEDS": {
|
|
self._random_temp_filename(): {"format": "json"},
|
|
self._random_temp_filename(): {"format": "xml"},
|
|
self._random_temp_filename(): {"format": "csv"},
|
|
},
|
|
"FEED_STORAGES": {"file": LogOnStoreFileStorage},
|
|
"FEED_STORE_EMPTY": False,
|
|
}
|
|
|
|
with caplog.at_level(logging.INFO):
|
|
await self.exported_no_data(settings)
|
|
|
|
assert caplog.text.count("Storage.store is called") == 0
|
|
|
|
@coroutine_test
|
|
async def test_export_multiple_item_classes(self):
|
|
items = [
|
|
MyItem({"foo": "bar1", "egg": "spam1"}),
|
|
MyItem2({"hello": "world2", "foo": "bar2"}),
|
|
MyItem({"foo": "bar3", "egg": "spam3", "baz": "quux3"}),
|
|
{"hello": "world4", "egg": "spam4"},
|
|
]
|
|
|
|
# by default, Scrapy uses fields of the first Item for CSV and
|
|
# all fields for JSON Lines
|
|
header = MyItem.fields.keys()
|
|
rows_csv = [
|
|
{"egg": "spam1", "foo": "bar1", "baz": ""},
|
|
{"egg": "", "foo": "bar2", "baz": ""},
|
|
{"egg": "spam3", "foo": "bar3", "baz": "quux3"},
|
|
{"egg": "spam4", "foo": "", "baz": ""},
|
|
]
|
|
rows_jl = [dict(row) for row in items]
|
|
await self.assertExportedCsv(items, header, rows_csv)
|
|
await self.assertExportedJsonLines(items, rows_jl)
|
|
|
|
@coroutine_test
|
|
async def test_export_items_empty_field_list(self):
|
|
# FEED_EXPORT_FIELDS==[] means the same as default None
|
|
items = [{"foo": "bar"}]
|
|
header = ["foo"]
|
|
rows = [{"foo": "bar"}]
|
|
settings = {"FEED_EXPORT_FIELDS": []}
|
|
await self.assertExportedCsv(items, header, rows)
|
|
await self.assertExportedJsonLines(items, rows, settings)
|
|
|
|
@coroutine_test
|
|
async def test_export_items_field_list(self):
|
|
items = [{"foo": "bar"}]
|
|
header = ["foo", "baz"]
|
|
rows = [{"foo": "bar", "baz": ""}]
|
|
settings = {"FEED_EXPORT_FIELDS": header}
|
|
await self.assertExported(items, header, rows, settings=settings)
|
|
|
|
@coroutine_test
|
|
async def test_export_items_comma_separated_field_list(self):
|
|
items = [{"foo": "bar"}]
|
|
header = ["foo", "baz"]
|
|
rows = [{"foo": "bar", "baz": ""}]
|
|
settings = {"FEED_EXPORT_FIELDS": ",".join(header)}
|
|
await self.assertExported(items, header, rows, settings=settings)
|
|
|
|
@coroutine_test
|
|
async def test_export_items_json_field_list(self):
|
|
items = [{"foo": "bar"}]
|
|
header = ["foo", "baz"]
|
|
rows = [{"foo": "bar", "baz": ""}]
|
|
settings = {"FEED_EXPORT_FIELDS": json.dumps(header)}
|
|
await self.assertExported(items, header, rows, settings=settings)
|
|
|
|
@coroutine_test
|
|
async def test_export_items_field_names(self):
|
|
items = [{"foo": "bar"}]
|
|
header = {"foo": "Foo"}
|
|
rows = [{"Foo": "bar"}]
|
|
settings = {"FEED_EXPORT_FIELDS": header}
|
|
await self.assertExported(items, list(header.values()), rows, settings=settings)
|
|
|
|
@coroutine_test
|
|
async def test_export_items_dict_field_names(self):
|
|
items = [{"foo": "bar"}]
|
|
header = {
|
|
"baz": "Baz",
|
|
"foo": "Foo",
|
|
}
|
|
rows = [{"Baz": "", "Foo": "bar"}]
|
|
settings = {"FEED_EXPORT_FIELDS": header}
|
|
await self.assertExported(items, ["Baz", "Foo"], rows, settings=settings)
|
|
|
|
@coroutine_test
|
|
async def test_export_items_json_field_names(self):
|
|
items = [{"foo": "bar"}]
|
|
header = {"foo": "Foo"}
|
|
rows = [{"Foo": "bar"}]
|
|
settings = {"FEED_EXPORT_FIELDS": json.dumps(header)}
|
|
await self.assertExported(items, list(header.values()), rows, settings=settings)
|
|
|
|
@coroutine_test
|
|
async def test_export_based_on_item_classes(self):
|
|
items = [
|
|
MyItem({"foo": "bar1", "egg": "spam1"}),
|
|
MyItem2({"hello": "world2", "foo": "bar2"}),
|
|
{"hello": "world3", "egg": "spam3"},
|
|
]
|
|
|
|
formats = {
|
|
"csv": b"foo,egg,baz\r\nbar1,spam1,\r\n",
|
|
"json": b'[\n{"hello": "world2", "foo": "bar2"}\n]',
|
|
"jsonlines": (
|
|
b'{"foo": "bar1", "egg": "spam1"}\n{"hello": "world2", "foo": "bar2"}\n'
|
|
),
|
|
"xml": (
|
|
b'<?xml version="1.0" encoding="utf-8"?>\n<items>\n<item>'
|
|
b"<foo>bar1</foo><egg>spam1</egg></item>\n<item><hello>"
|
|
b"world2</hello><foo>bar2</foo></item>\n<item><hello>world3"
|
|
b"</hello><egg>spam3</egg></item>\n</items>"
|
|
),
|
|
}
|
|
|
|
settings = {
|
|
"FEEDS": {
|
|
self._random_temp_filename(): {
|
|
"format": "csv",
|
|
"item_classes": [MyItem],
|
|
},
|
|
self._random_temp_filename(): {
|
|
"format": "json",
|
|
"item_classes": [MyItem2],
|
|
},
|
|
self._random_temp_filename(): {
|
|
"format": "jsonlines",
|
|
"item_classes": [MyItem, MyItem2],
|
|
},
|
|
self._random_temp_filename(): {
|
|
"format": "xml",
|
|
},
|
|
},
|
|
}
|
|
|
|
data = await self.exported_data(items, settings)
|
|
for fmt, expected in formats.items():
|
|
assert data[fmt] == expected
|
|
|
|
@coroutine_test
|
|
async def test_export_based_on_custom_filters(self):
|
|
items = [
|
|
MyItem({"foo": "bar1", "egg": "spam1"}),
|
|
MyItem2({"hello": "world2", "foo": "bar2"}),
|
|
{"hello": "world3", "egg": "spam3"},
|
|
]
|
|
|
|
class CustomFilter1:
|
|
def __init__(self, feed_options):
|
|
pass
|
|
|
|
def accepts(self, item):
|
|
return isinstance(item, MyItem)
|
|
|
|
class CustomFilter2(scrapy.extensions.feedexport.ItemFilter):
|
|
def accepts(self, item):
|
|
return "foo" in item.fields
|
|
|
|
class CustomFilter3(scrapy.extensions.feedexport.ItemFilter):
|
|
def accepts(self, item):
|
|
return (
|
|
isinstance(item, tuple(self.item_classes)) and item["foo"] == "bar1"
|
|
)
|
|
|
|
formats = {
|
|
"json": b'[\n{"foo": "bar1", "egg": "spam1"}\n]',
|
|
"xml": (
|
|
b'<?xml version="1.0" encoding="utf-8"?>\n<items>\n<item>'
|
|
b"<foo>bar1</foo><egg>spam1</egg></item>\n<item><hello>"
|
|
b"world2</hello><foo>bar2</foo></item>\n</items>"
|
|
),
|
|
"jsonlines": b'{"foo": "bar1", "egg": "spam1"}\n',
|
|
}
|
|
|
|
settings = {
|
|
"FEEDS": {
|
|
self._random_temp_filename(): {
|
|
"format": "json",
|
|
"item_filter": CustomFilter1,
|
|
},
|
|
self._random_temp_filename(): {
|
|
"format": "xml",
|
|
"item_filter": CustomFilter2,
|
|
},
|
|
self._random_temp_filename(): {
|
|
"format": "jsonlines",
|
|
"item_classes": [MyItem, MyItem2],
|
|
"item_filter": CustomFilter3,
|
|
},
|
|
},
|
|
}
|
|
|
|
data = await self.exported_data(items, settings)
|
|
for fmt, expected in formats.items():
|
|
assert data[fmt] == expected
|
|
|
|
@coroutine_test
|
|
async def test_export_dicts(self):
|
|
# When dicts are used, only keys from the first row are used as
|
|
# a header for CSV, and all fields are used for JSON Lines.
|
|
items = [
|
|
{"foo": "bar", "egg": "spam"},
|
|
{"foo": "bar", "egg": "spam", "baz": "quux"},
|
|
]
|
|
rows_csv = [{"egg": "spam", "foo": "bar"}, {"egg": "spam", "foo": "bar"}]
|
|
rows_jl = items
|
|
await self.assertExportedCsv(items, ["foo", "egg"], rows_csv)
|
|
await self.assertExportedJsonLines(items, rows_jl)
|
|
|
|
@coroutine_test
|
|
async def test_export_tuple(self):
|
|
items = [
|
|
{"foo": "bar1", "egg": "spam1"},
|
|
{"foo": "bar2", "egg": "spam2", "baz": "quux"},
|
|
]
|
|
|
|
settings = {"FEED_EXPORT_FIELDS": ("foo", "baz")}
|
|
rows = [{"foo": "bar1", "baz": ""}, {"foo": "bar2", "baz": "quux"}]
|
|
await self.assertExported(items, ["foo", "baz"], rows, settings=settings)
|
|
|
|
@coroutine_test
|
|
async def test_export_feed_export_fields(self):
|
|
# FEED_EXPORT_FIELDS option allows to order export fields
|
|
# and to select a subset of fields to export, both for Items and dicts.
|
|
|
|
for item_cls in [MyItem, dict]:
|
|
items = [
|
|
item_cls({"foo": "bar1", "egg": "spam1"}),
|
|
item_cls({"foo": "bar2", "egg": "spam2", "baz": "quux2"}),
|
|
]
|
|
|
|
# export all columns
|
|
settings = {"FEED_EXPORT_FIELDS": "foo,baz,egg"}
|
|
rows = [
|
|
{"egg": "spam1", "foo": "bar1", "baz": ""},
|
|
{"egg": "spam2", "foo": "bar2", "baz": "quux2"},
|
|
]
|
|
await self.assertExported(
|
|
items, ["foo", "baz", "egg"], rows, settings=settings
|
|
)
|
|
|
|
# export a subset of columns
|
|
settings = {"FEED_EXPORT_FIELDS": "egg,baz"}
|
|
rows = [{"egg": "spam1", "baz": ""}, {"egg": "spam2", "baz": "quux2"}]
|
|
await self.assertExported(items, ["egg", "baz"], rows, settings=settings)
|
|
|
|
@coroutine_test
|
|
async def test_export_encoding(self):
|
|
items = [{"foo": "Test\xd6"}]
|
|
|
|
formats = {
|
|
"json": b'[{"foo": "Test\\u00d6"}]',
|
|
"jsonlines": b'{"foo": "Test\\u00d6"}\n',
|
|
"xml": (
|
|
'<?xml version="1.0" encoding="utf-8"?>\n'
|
|
"<items><item><foo>Test\xd6</foo></item></items>"
|
|
).encode(),
|
|
"csv": "foo\r\nTest\xd6\r\n".encode(),
|
|
}
|
|
|
|
for fmt, expected in formats.items():
|
|
settings = {
|
|
"FEEDS": {
|
|
self._random_temp_filename(): {"format": fmt},
|
|
},
|
|
"FEED_EXPORT_INDENT": None,
|
|
}
|
|
data = await self.exported_data(items, settings)
|
|
assert data[fmt] == expected
|
|
|
|
formats = {
|
|
"json": b'[{"foo": "Test\xd6"}]',
|
|
"jsonlines": b'{"foo": "Test\xd6"}\n',
|
|
"xml": (
|
|
b'<?xml version="1.0" encoding="latin-1"?>\n'
|
|
b"<items><item><foo>Test\xd6</foo></item></items>"
|
|
),
|
|
"csv": b"foo\r\nTest\xd6\r\n",
|
|
}
|
|
|
|
for fmt, expected in formats.items():
|
|
settings = {
|
|
"FEEDS": {
|
|
self._random_temp_filename(): {"format": fmt},
|
|
},
|
|
"FEED_EXPORT_INDENT": None,
|
|
"FEED_EXPORT_ENCODING": "latin-1",
|
|
}
|
|
data = await self.exported_data(items, settings)
|
|
assert data[fmt] == expected
|
|
|
|
@coroutine_test
|
|
async def test_export_multiple_configs(self):
|
|
items = [{"foo": "FOO", "bar": "BAR"}]
|
|
|
|
formats = {
|
|
"json": b'[\n{"bar": "BAR"}\n]',
|
|
"xml": (
|
|
b'<?xml version="1.0" encoding="latin-1"?>\n'
|
|
b"<items>\n <item>\n <foo>FOO</foo>\n </item>\n</items>"
|
|
),
|
|
"csv": b"bar,foo\r\nBAR,FOO\r\n",
|
|
}
|
|
|
|
settings = {
|
|
"FEEDS": {
|
|
self._random_temp_filename(): {
|
|
"format": "json",
|
|
"indent": 0,
|
|
"fields": ["bar"],
|
|
"encoding": "utf-8",
|
|
},
|
|
self._random_temp_filename(): {
|
|
"format": "xml",
|
|
"indent": 2,
|
|
"fields": ["foo"],
|
|
"encoding": "latin-1",
|
|
},
|
|
self._random_temp_filename(): {
|
|
"format": "csv",
|
|
"indent": None,
|
|
"fields": ["bar", "foo"],
|
|
"encoding": "utf-8",
|
|
},
|
|
},
|
|
}
|
|
|
|
data = await self.exported_data(items, settings)
|
|
for fmt, expected in formats.items():
|
|
assert data[fmt] == expected
|
|
|
|
@coroutine_test
|
|
async def test_export_indentation(self):
|
|
items = [
|
|
{"foo": ["bar"]},
|
|
{"key": "value"},
|
|
]
|
|
|
|
test_cases = [
|
|
# JSON
|
|
{
|
|
"format": "json",
|
|
"indent": None,
|
|
"expected": b'[{"foo": ["bar"]},{"key": "value"}]',
|
|
},
|
|
{
|
|
"format": "json",
|
|
"indent": -1,
|
|
"expected": b"""[
|
|
{"foo": ["bar"]},
|
|
{"key": "value"}
|
|
]""",
|
|
},
|
|
{
|
|
"format": "json",
|
|
"indent": 0,
|
|
"expected": b"""[
|
|
{"foo": ["bar"]},
|
|
{"key": "value"}
|
|
]""",
|
|
},
|
|
{
|
|
"format": "json",
|
|
"indent": 2,
|
|
"expected": b"""[
|
|
{
|
|
"foo": [
|
|
"bar"
|
|
]
|
|
},
|
|
{
|
|
"key": "value"
|
|
}
|
|
]""",
|
|
},
|
|
{
|
|
"format": "json",
|
|
"indent": 4,
|
|
"expected": b"""[
|
|
{
|
|
"foo": [
|
|
"bar"
|
|
]
|
|
},
|
|
{
|
|
"key": "value"
|
|
}
|
|
]""",
|
|
},
|
|
{
|
|
"format": "json",
|
|
"indent": 5,
|
|
"expected": b"""[
|
|
{
|
|
"foo": [
|
|
"bar"
|
|
]
|
|
},
|
|
{
|
|
"key": "value"
|
|
}
|
|
]""",
|
|
},
|
|
# XML
|
|
{
|
|
"format": "xml",
|
|
"indent": None,
|
|
"expected": b"""<?xml version="1.0" encoding="utf-8"?>
|
|
<items><item><foo><value>bar</value></foo></item><item><key>value</key></item></items>""",
|
|
},
|
|
{
|
|
"format": "xml",
|
|
"indent": -1,
|
|
"expected": b"""<?xml version="1.0" encoding="utf-8"?>
|
|
<items>
|
|
<item><foo><value>bar</value></foo></item>
|
|
<item><key>value</key></item>
|
|
</items>""",
|
|
},
|
|
{
|
|
"format": "xml",
|
|
"indent": 0,
|
|
"expected": b"""<?xml version="1.0" encoding="utf-8"?>
|
|
<items>
|
|
<item><foo><value>bar</value></foo></item>
|
|
<item><key>value</key></item>
|
|
</items>""",
|
|
},
|
|
{
|
|
"format": "xml",
|
|
"indent": 2,
|
|
"expected": b"""<?xml version="1.0" encoding="utf-8"?>
|
|
<items>
|
|
<item>
|
|
<foo>
|
|
<value>bar</value>
|
|
</foo>
|
|
</item>
|
|
<item>
|
|
<key>value</key>
|
|
</item>
|
|
</items>""",
|
|
},
|
|
{
|
|
"format": "xml",
|
|
"indent": 4,
|
|
"expected": b"""<?xml version="1.0" encoding="utf-8"?>
|
|
<items>
|
|
<item>
|
|
<foo>
|
|
<value>bar</value>
|
|
</foo>
|
|
</item>
|
|
<item>
|
|
<key>value</key>
|
|
</item>
|
|
</items>""",
|
|
},
|
|
{
|
|
"format": "xml",
|
|
"indent": 5,
|
|
"expected": b"""<?xml version="1.0" encoding="utf-8"?>
|
|
<items>
|
|
<item>
|
|
<foo>
|
|
<value>bar</value>
|
|
</foo>
|
|
</item>
|
|
<item>
|
|
<key>value</key>
|
|
</item>
|
|
</items>""",
|
|
},
|
|
]
|
|
|
|
for row in test_cases:
|
|
settings = {
|
|
"FEEDS": {
|
|
self._random_temp_filename(): {
|
|
"format": row["format"],
|
|
"indent": row["indent"],
|
|
},
|
|
},
|
|
}
|
|
data = await self.exported_data(items, settings)
|
|
assert data[row["format"]] == row["expected"]
|
|
|
|
@coroutine_test
|
|
async def test_init_exporters_storages_with_crawler(self):
|
|
settings = {
|
|
"FEED_EXPORTERS": {"csv": FromCrawlerCsvItemExporter},
|
|
"FEED_STORAGES": {"file": FromCrawlerFileFeedStorage},
|
|
"FEEDS": {
|
|
self._random_temp_filename(): {"format": "csv"},
|
|
},
|
|
}
|
|
await self.exported_data(items=[], settings=settings)
|
|
assert FromCrawlerCsvItemExporter.init_with_crawler
|
|
assert FromCrawlerFileFeedStorage.init_with_crawler
|
|
|
|
@coroutine_test
|
|
async def test_str_uri(self):
|
|
settings = {
|
|
"FEED_STORE_EMPTY": True,
|
|
"FEEDS": {str(self._random_temp_filename()): {"format": "csv"}},
|
|
}
|
|
data = await self.exported_no_data(settings)
|
|
assert data["csv"] == b""
|
|
|
|
@coroutine_test
|
|
async def test_multiple_feeds_success_logs_blocking_feed_storage(
|
|
self, caplog: pytest.LogCaptureFixture
|
|
):
|
|
settings = {
|
|
"FEEDS": {
|
|
self._random_temp_filename(): {"format": "json"},
|
|
self._random_temp_filename(): {"format": "xml"},
|
|
self._random_temp_filename(): {"format": "csv"},
|
|
},
|
|
"FEED_STORAGES": {"file": DummyBlockingFeedStorage},
|
|
}
|
|
items = [
|
|
{"foo": "bar1", "baz": ""},
|
|
{"foo": "bar2", "baz": "quux"},
|
|
]
|
|
with caplog.at_level(logging.DEBUG):
|
|
await self.exported_data(items, settings)
|
|
|
|
for fmt in ["json", "xml", "csv"]:
|
|
assert f"Stored {fmt} feed (2 items)" in caplog.text
|
|
|
|
@coroutine_test
|
|
async def test_multiple_feeds_failing_logs_blocking_feed_storage(
|
|
self, caplog: pytest.LogCaptureFixture
|
|
):
|
|
settings = {
|
|
"FEEDS": {
|
|
self._random_temp_filename(): {"format": "json"},
|
|
self._random_temp_filename(): {"format": "xml"},
|
|
self._random_temp_filename(): {"format": "csv"},
|
|
},
|
|
"FEED_STORAGES": {"file": FailingBlockingFeedStorage},
|
|
}
|
|
items = [
|
|
{"foo": "bar1", "baz": ""},
|
|
{"foo": "bar2", "baz": "quux"},
|
|
]
|
|
with caplog.at_level(logging.DEBUG):
|
|
await self.exported_data(items, settings)
|
|
|
|
for fmt in ["json", "xml", "csv"]:
|
|
assert f"Error storing {fmt} feed (2 items)" in caplog.text
|
|
|
|
@coroutine_test
|
|
async def test_extend_kwargs(self):
|
|
items = [{"foo": "FOO", "bar": "BAR"}]
|
|
|
|
expected_with_title_csv = b"foo,bar\r\nFOO,BAR\r\n"
|
|
expected_without_title_csv = b"FOO,BAR\r\n"
|
|
test_cases = [
|
|
# with title
|
|
{
|
|
"options": {
|
|
"format": "csv",
|
|
"item_export_kwargs": {"include_headers_line": True},
|
|
},
|
|
"expected": expected_with_title_csv,
|
|
},
|
|
# without title
|
|
{
|
|
"options": {
|
|
"format": "csv",
|
|
"item_export_kwargs": {"include_headers_line": False},
|
|
},
|
|
"expected": expected_without_title_csv,
|
|
},
|
|
]
|
|
|
|
for row in test_cases:
|
|
feed_options = row["options"]
|
|
settings = {
|
|
"FEEDS": {
|
|
self._random_temp_filename(): feed_options,
|
|
},
|
|
"FEED_EXPORT_INDENT": None,
|
|
}
|
|
|
|
data = await self.exported_data(items, settings)
|
|
assert data[feed_options["format"]] == row["expected"]
|
|
|
|
@coroutine_test
|
|
async def test_storage_file_no_postprocessing(self):
|
|
class Storage:
|
|
def __init__(self, uri, *, feed_options=None):
|
|
pass
|
|
|
|
def open(self, spider):
|
|
Storage.open_file = tempfile.NamedTemporaryFile(prefix="feed-")
|
|
return Storage.open_file
|
|
|
|
def store(self, file):
|
|
Storage.store_file = file
|
|
file.close()
|
|
|
|
settings = {
|
|
"FEEDS": {self._random_temp_filename(): {"format": "jsonlines"}},
|
|
"FEED_STORAGES": {"file": Storage},
|
|
}
|
|
await self.exported_no_data(settings)
|
|
assert Storage.open_file is Storage.store_file
|
|
|
|
@coroutine_test
|
|
async def test_storage_file_postprocessing(self):
|
|
class Storage:
|
|
def __init__(self, uri, *, feed_options=None):
|
|
pass
|
|
|
|
def open(self, spider):
|
|
Storage.open_file = tempfile.NamedTemporaryFile(prefix="feed-")
|
|
return Storage.open_file
|
|
|
|
def store(self, file):
|
|
Storage.store_file = file
|
|
Storage.file_was_closed = file.closed
|
|
file.close()
|
|
|
|
settings = {
|
|
"FEEDS": {
|
|
self._random_temp_filename(): {
|
|
"format": "jsonlines",
|
|
"postprocessing": [
|
|
"scrapy.extensions.postprocessing.GzipPlugin",
|
|
],
|
|
},
|
|
},
|
|
"FEED_STORAGES": {"file": Storage},
|
|
}
|
|
await self.exported_no_data(settings)
|
|
assert Storage.open_file is Storage.store_file
|
|
assert not Storage.file_was_closed
|
|
|
|
|
|
# Test that the FeedExporer sends the feed_exporter_closed and feed_slot_closed signals
|
|
class TestFeedExporterSignals:
|
|
items = [
|
|
{"foo": "bar1", "egg": "spam1"},
|
|
{"foo": "bar2", "egg": "spam2", "baz": "quux2"},
|
|
{"foo": "bar3", "baz": "quux3"},
|
|
]
|
|
|
|
with tempfile.NamedTemporaryFile(suffix="json") as tmp:
|
|
settings = {
|
|
"FEEDS": {
|
|
printf_escape(path_to_url(tmp.name)): {
|
|
"format": "json",
|
|
},
|
|
},
|
|
}
|
|
|
|
def feed_exporter_closed_signal_handler(self):
|
|
self.feed_exporter_closed_received = True
|
|
|
|
def feed_slot_closed_signal_handler(self, slot):
|
|
self.feed_slot_closed_received = True
|
|
|
|
async def feed_exporter_closed_signal_handler_async(self):
|
|
self.feed_exporter_closed_received = True
|
|
|
|
async def feed_slot_closed_signal_handler_async(self, slot):
|
|
self.feed_slot_closed_received = True
|
|
|
|
async def run_signaled_feed_exporter(
|
|
self,
|
|
feed_exporter_signal_handler: Callable[[], Awaitable[None] | None],
|
|
feed_slot_signal_handler: Callable[[Any], Awaitable[None] | None],
|
|
) -> None:
|
|
crawler = get_crawler(settings_dict=self.settings)
|
|
feed_exporter = FeedExporter.from_crawler(crawler)
|
|
spider = scrapy.Spider("default")
|
|
spider.crawler = crawler
|
|
crawler.signals.connect(
|
|
feed_exporter_signal_handler,
|
|
signal=signals.feed_exporter_closed,
|
|
)
|
|
crawler.signals.connect(
|
|
feed_slot_signal_handler, signal=signals.feed_slot_closed
|
|
)
|
|
feed_exporter.open_spider(spider)
|
|
for item in self.items:
|
|
feed_exporter.item_scraped(item, spider)
|
|
await feed_exporter.close_spider(spider)
|
|
|
|
@coroutine_test
|
|
async def test_feed_exporter_signals_sent(self) -> None:
|
|
self.feed_exporter_closed_received = False
|
|
self.feed_slot_closed_received = False
|
|
|
|
await self.run_signaled_feed_exporter(
|
|
self.feed_exporter_closed_signal_handler,
|
|
self.feed_slot_closed_signal_handler,
|
|
)
|
|
assert self.feed_slot_closed_received
|
|
assert self.feed_exporter_closed_received
|
|
|
|
@coroutine_test
|
|
async def test_feed_exporter_signals_sent_async(self) -> None:
|
|
self.feed_exporter_closed_received = False
|
|
self.feed_slot_closed_received = False
|
|
|
|
await self.run_signaled_feed_exporter(
|
|
self.feed_exporter_closed_signal_handler_async,
|
|
self.feed_slot_closed_signal_handler_async,
|
|
)
|
|
assert self.feed_slot_closed_received
|
|
assert self.feed_exporter_closed_received
|
|
|
|
|
|
class TestFeedExportInit:
|
|
def test_unsupported_storage(self):
|
|
settings = {
|
|
"FEEDS": {
|
|
"unsupported://uri": {},
|
|
},
|
|
}
|
|
crawler = get_crawler(settings_dict=settings)
|
|
with pytest.raises(NotConfigured):
|
|
FeedExporter.from_crawler(crawler)
|
|
|
|
def test_unsupported_format(self):
|
|
settings = {
|
|
"FEEDS": {
|
|
"file://path": {
|
|
"format": "unsupported_format",
|
|
},
|
|
},
|
|
}
|
|
crawler = get_crawler(settings_dict=settings)
|
|
with pytest.raises(NotConfigured):
|
|
FeedExporter.from_crawler(crawler)
|
|
|
|
def test_absolute_pathlib_as_uri(self):
|
|
with tempfile.NamedTemporaryFile(suffix="json") as tmp:
|
|
settings = {
|
|
"FEEDS": {
|
|
Path(tmp.name).resolve(): {
|
|
"format": "json",
|
|
},
|
|
},
|
|
}
|
|
crawler = get_crawler(settings_dict=settings)
|
|
exporter = FeedExporter.from_crawler(crawler)
|
|
assert isinstance(exporter, FeedExporter)
|
|
|
|
def test_relative_pathlib_as_uri(self):
|
|
settings = {
|
|
"FEEDS": {
|
|
Path("./items.json"): {
|
|
"format": "json",
|
|
},
|
|
},
|
|
}
|
|
crawler = get_crawler(settings_dict=settings)
|
|
exporter = FeedExporter.from_crawler(crawler)
|
|
assert isinstance(exporter, FeedExporter)
|
|
|
|
|
|
class TestApplyUriParams:
|
|
params = {
|
|
"name": "myspider",
|
|
"time": "2020-01-01T00-00-00",
|
|
"batch_id": 2,
|
|
"batch_time": "2020-01-01T00-00-00",
|
|
}
|
|
|
|
@pytest.mark.parametrize(
|
|
("uri_template", "expected"),
|
|
[
|
|
# Placeholders are substituted, including width/flags.
|
|
("/data/%(name)s/%(time)s.json", "/data/myspider/2020-01-01T00-00-00.json"),
|
|
("/data/%(batch_id)05d.json", "/data/00002.json"),
|
|
# Percent-encoding is kept verbatim (#6425, #5794).
|
|
(
|
|
"file:///path%20with%20spaces/%(name)s.json",
|
|
"file:///path%20with%20spaces/myspider.json",
|
|
),
|
|
(
|
|
"ftp://user:2%23um25%21M%23JZ@ftp.example.com/%(name)s.csv",
|
|
"ftp://user:2%23um25%21M%23JZ@ftp.example.com/myspider.csv",
|
|
),
|
|
# A lone percent character next to a placeholder stays literal.
|
|
("/100%/%(name)s.json", "/100%/myspider.json"),
|
|
],
|
|
)
|
|
def test_apply_uri_params(self, uri_template, expected):
|
|
assert apply_uri_params(uri_template, self.params) == expected
|