#!/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()