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gallery-dl/test/test_downloader.py
Mike Fährmann ece73b5b2a
make 'path' and 'keywords' available in logging messages
Wrap all loggers used by job, extractor, downloader, and postprocessor
objects into a (custom) LoggerAdapter that provides access to the
underlying job, extractor, pathfmt, and kwdict objects and their
properties.

__init__() signatures for all downloader and postprocessor classes have
been changed to take the current Job object as their first argument,
instead of the current extractor or pathfmt.

(#574, #575)
2020-05-18 19:04:51 +02:00

289 lines
8.5 KiB
Python

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright 2018-2020 Mike Fährmann
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
import os
import sys
import unittest
from unittest.mock import Mock, MagicMock, patch
import re
import base64
import logging
import os.path
import tempfile
import threading
import http.server
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
from gallery_dl import downloader, extractor, output, config, util # noqa E402
class MockDownloaderModule(Mock):
__downloader__ = "mock"
class FakeJob():
def __init__(self):
self.extractor = extractor.find("test:")
self.pathfmt = util.PathFormat(self.extractor)
self.out = output.NullOutput()
self.get_logger = logging.getLogger
class TestDownloaderModule(unittest.TestCase):
@classmethod
def setUpClass(cls):
# allow import of ytdl downloader module without youtube_dl installed
sys.modules["youtube_dl"] = MagicMock()
@classmethod
def tearDownClass(cls):
del sys.modules["youtube_dl"]
def tearDown(self):
downloader._cache.clear()
def test_find(self):
cls = downloader.find("http")
self.assertEqual(cls.__name__, "HttpDownloader")
self.assertEqual(cls.scheme , "http")
cls = downloader.find("https")
self.assertEqual(cls.__name__, "HttpDownloader")
self.assertEqual(cls.scheme , "http")
cls = downloader.find("text")
self.assertEqual(cls.__name__, "TextDownloader")
self.assertEqual(cls.scheme , "text")
cls = downloader.find("ytdl")
self.assertEqual(cls.__name__, "YoutubeDLDownloader")
self.assertEqual(cls.scheme , "ytdl")
self.assertEqual(downloader.find("ftp"), None)
self.assertEqual(downloader.find("foo"), None)
self.assertEqual(downloader.find(1234) , None)
self.assertEqual(downloader.find(None) , None)
@patch("importlib.import_module")
def test_cache(self, import_module):
import_module.return_value = MockDownloaderModule()
downloader.find("http")
downloader.find("text")
downloader.find("ytdl")
self.assertEqual(import_module.call_count, 3)
downloader.find("http")
downloader.find("text")
downloader.find("ytdl")
self.assertEqual(import_module.call_count, 3)
@patch("importlib.import_module")
def test_cache_http(self, import_module):
import_module.return_value = MockDownloaderModule()
downloader.find("http")
downloader.find("https")
self.assertEqual(import_module.call_count, 1)
@patch("importlib.import_module")
def test_cache_https(self, import_module):
import_module.return_value = MockDownloaderModule()
downloader.find("https")
downloader.find("http")
self.assertEqual(import_module.call_count, 1)
class TestDownloaderBase(unittest.TestCase):
@classmethod
def setUpClass(cls):
cls.dir = tempfile.TemporaryDirectory()
cls.fnum = 0
config.set((), "base-directory", cls.dir.name)
cls.job = FakeJob()
@classmethod
def tearDownClass(cls):
cls.dir.cleanup()
config.clear()
@classmethod
def _prepare_destination(cls, content=None, part=True, extension=None):
name = "file-{}".format(cls.fnum)
cls.fnum += 1
kwdict = {
"category" : "test",
"subcategory": "test",
"filename" : name,
"extension" : extension,
}
pathfmt = cls.job.pathfmt
pathfmt.set_directory(kwdict)
pathfmt.set_filename(kwdict)
if content:
mode = "w" + ("b" if isinstance(content, bytes) else "")
with pathfmt.open(mode) as file:
file.write(content)
return pathfmt
def _run_test(self, url, input, output,
extension, expected_extension=None):
pathfmt = self._prepare_destination(input, extension=extension)
success = self.downloader.download(url, pathfmt)
# test successful download
self.assertTrue(success, "downloading '{}' failed".format(url))
# test content
mode = "r" + ("b" if isinstance(output, bytes) else "")
with pathfmt.open(mode) as file:
content = file.read()
self.assertEqual(content, output)
# test filename extension
self.assertEqual(
pathfmt.extension,
expected_extension,
)
self.assertEqual(
os.path.splitext(pathfmt.realpath)[1][1:],
expected_extension,
)
class TestHTTPDownloader(TestDownloaderBase):
@classmethod
def setUpClass(cls):
TestDownloaderBase.setUpClass()
cls.downloader = downloader.find("http")(cls.job)
port = 8088
cls.address = "http://127.0.0.1:{}".format(port)
cls._jpg = cls.address + "/image.jpg"
cls._png = cls.address + "/image.png"
cls._gif = cls.address + "/image.gif"
server = http.server.HTTPServer(("", port), HttpRequestHandler)
threading.Thread(target=server.serve_forever, daemon=True).start()
def test_http_download(self):
self._run_test(self._jpg, None, DATA_JPG, "jpg", "jpg")
self._run_test(self._png, None, DATA_PNG, "png", "png")
self._run_test(self._gif, None, DATA_GIF, "gif", "gif")
def test_http_offset(self):
self._run_test(self._jpg, DATA_JPG[:123], DATA_JPG, "jpg", "jpg")
self._run_test(self._png, DATA_PNG[:12] , DATA_PNG, "png", "png")
self._run_test(self._gif, DATA_GIF[:1] , DATA_GIF, "gif", "gif")
def test_http_extension(self):
self._run_test(self._jpg, None, DATA_JPG, None, "jpg")
self._run_test(self._png, None, DATA_PNG, None, "png")
self._run_test(self._gif, None, DATA_GIF, None, "gif")
def test_http_adjust_extension(self):
self._run_test(self._jpg, None, DATA_JPG, "png", "jpg")
self._run_test(self._png, None, DATA_PNG, "gif", "png")
self._run_test(self._gif, None, DATA_GIF, "jpg", "gif")
class TestTextDownloader(TestDownloaderBase):
@classmethod
def setUpClass(cls):
TestDownloaderBase.setUpClass()
cls.downloader = downloader.find("text")(cls.job)
def test_text_download(self):
self._run_test("text:foobar", None, "foobar", "txt", "txt")
def test_text_offset(self):
self._run_test("text:foobar", "foo", "foobar", "txt", "txt")
def test_text_empty(self):
self._run_test("text:", None, "", "txt", "txt")
class HttpRequestHandler(http.server.BaseHTTPRequestHandler):
def do_GET(self):
if self.path == "/image.jpg":
content_type = "image/jpeg"
output = DATA_JPG
elif self.path == "/image.png":
content_type = "image/png"
output = DATA_PNG
elif self.path == "/image.gif":
content_type = "image/gif"
output = DATA_GIF
else:
self.send_response(404)
self.wfile.write(self.path.encode())
return
headers = {
"Content-Type": content_type,
"Content-Length": len(output),
}
if "Range" in self.headers:
status = 206
match = re.match(r"bytes=(\d+)-", self.headers["Range"])
start = int(match.group(1))
headers["Content-Range"] = "bytes {}-{}/{}".format(
start, len(output)-1, len(output))
output = output[start:]
else:
status = 200
self.send_response(status)
for key, value in headers.items():
self.send_header(key, value)
self.end_headers()
self.wfile.write(output)
DATA_JPG = base64.standard_b64decode("""
/9j/4AAQSkZJRgABAQEASABIAAD/2wBD
AAEBAQEBAQEBAQEBAQEBAQEBAQEBAQEB
AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEB
AQEBAQEBAQEBAQEBAQEBAQH/2wBDAQEB
AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEB
AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEB
AQEBAQEBAQEBAQEBAQH/wAARCAABAAED
AREAAhEBAxEB/8QAFAABAAAAAAAAAAAA
AAAAAAAACv/EABQQAQAAAAAAAAAAAAAA
AAAAAAD/xAAUAQEAAAAAAAAAAAAAAAAA
AAAA/8QAFBEBAAAAAAAAAAAAAAAAAAAA
AP/aAAwDAQACEQMRAD8AfwD/2Q==""")
DATA_PNG = base64.standard_b64decode("""
iVBORw0KGgoAAAANSUhEUgAAAAEAAAAB
CAAAAAA6fptVAAAACklEQVQIHWP4DwAB
AQEANl9ngAAAAABJRU5ErkJggg==""")
DATA_GIF = base64.standard_b64decode("""
R0lGODdhAQABAIAAAP///////ywAAAAA
AQABAAACAkQBADs=""")
if __name__ == "__main__":
unittest.main()