mirror of
https://github.com/searxng/searxng.git
synced 2026-03-16 23:01:10 -04:00
68ff08f224
Removes the `fasttext-predict` dependency and the language detection code. If a user now selects `auto` for the search language, the detected language now falls back directly to the `Accept-Language` header sent by the browser (which was already the fallback when fasttext returned no result). - fasttext's [language detection is unreliable](https://github.com/searxng/searxng/issues/4195) for some languages, especially short search queries, and in particular for queries containing proper names which is a common case. - `fasttext-predict` consumes [significant memory](https://github.com/searxng/searxng/pull/1969#issuecomment-1345366676) without offering users much real value. - the upstream fasttext project was archived by Meta in 2024 - users already have two better alternatives: the `Accept-Language` header and the search-syntax language prefix (e.g. `:fr` or `:de`). Related: https://github.com/searxng/searxng/issues/4195 Closes: https://github.com/searxng/searxng/issues/5790
197 lines
7.7 KiB
Python
197 lines
7.7 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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# pylint: disable=missing-module-docstring,disable=missing-class-docstring,invalid-name
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import random
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import string
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import lxml.etree
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from lxml import html
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from parameterized.parameterized import parameterized
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from searx.exceptions import SearxXPathSyntaxException, SearxEngineXPathException
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from searx import utils
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from tests import SearxTestCase
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def random_string(length, choices=string.ascii_letters):
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return ''.join(random.choice(choices) for _ in range(length))
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class TestUtils(SearxTestCase):
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def test_gen_useragent(self):
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self.assertIsInstance(utils.gen_useragent(), str)
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self.assertIsNotNone(utils.gen_useragent())
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self.assertTrue(utils.gen_useragent().startswith('Mozilla'))
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def test_searxng_useragent(self):
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self.assertIsInstance(utils.searxng_useragent(), str)
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self.assertIsNotNone(utils.searxng_useragent())
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self.assertTrue(utils.searxng_useragent().startswith('SearXNG'))
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def test_extract_text(self):
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html_str = """
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<a href="/testlink" class="link_access_account">
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<span class="toto">
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<span>
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<img src="test.jpg" />
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</span>
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</span>
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<span class="titi">
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Test text
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</span>
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</a>
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"""
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dom = html.fromstring(html_str)
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self.assertEqual(utils.extract_text(dom), 'Test text')
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self.assertEqual(utils.extract_text(dom.xpath('//span')), 'Test text')
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self.assertEqual(utils.extract_text(dom.xpath('//span/text()')), 'Test text')
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self.assertEqual(utils.extract_text(dom.xpath('count(//span)')), '3.0')
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self.assertEqual(utils.extract_text(dom.xpath('boolean(//span)')), 'True')
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self.assertEqual(utils.extract_text(dom.xpath('//img/@src')), 'test.jpg')
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self.assertEqual(utils.extract_text(dom.xpath('//unexistingtag')), '')
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def test_extract_text_allow_none(self):
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self.assertEqual(utils.extract_text(None, allow_none=True), None)
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def test_extract_text_error_none(self):
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with self.assertRaises(ValueError):
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utils.extract_text(None)
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def test_extract_text_error_empty(self):
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with self.assertRaises(ValueError):
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utils.extract_text({})
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def test_extract_url(self):
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def f(html_str, search_url):
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return utils.extract_url(html.fromstring(html_str), search_url)
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self.assertEqual(f('<span id="42">https://example.com</span>', 'http://example.com/'), 'https://example.com/')
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self.assertEqual(f('https://example.com', 'http://example.com/'), 'https://example.com/')
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self.assertEqual(f('//example.com', 'http://example.com/'), 'http://example.com/')
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self.assertEqual(f('//example.com', 'https://example.com/'), 'https://example.com/')
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self.assertEqual(f('/path?a=1', 'https://example.com'), 'https://example.com/path?a=1')
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with self.assertRaises(lxml.etree.ParserError):
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f('', 'https://example.com')
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with self.assertRaises(Exception):
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utils.extract_url([], 'https://example.com')
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def test_ecma_unscape(self):
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self.assertEqual(utils.ecma_unescape('text%20with%20space'), 'text with space')
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self.assertEqual(utils.ecma_unescape('text using %xx: %F3'), 'text using %xx: ó')
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self.assertEqual(utils.ecma_unescape('text using %u: %u5409, %u4E16%u754c'), 'text using %u: 吉, 世界')
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@parameterized.expand(
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[
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('Example <span id="42">#2</span>', 'Example #2'),
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('<style>.span { color: red; }</style><span>Example</span>', 'Example'),
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(r'regexp: (?<![a-zA-Z]', r'regexp: (?<![a-zA-Z]'),
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(r'<p><b>Lorem ipsum </i>dolor sit amet</p>', 'Lorem ipsum </i>dolor sit amet</p>'),
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(r'> < a', '> < a'),
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]
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)
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def test_html_to_text(self, html_str: str, text_str: str):
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self.assertEqual(utils.html_to_text(html_str), text_str)
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def test_html_to_text_with_a_style_span(self):
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html_str = """
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<a href="/testlink" class="link_access_account">
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<style>
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.toto {
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color: red;
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}
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</style>
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<span class="toto">
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<span>
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<img src="test.jpg" />
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</span>
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</span>
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<span class="titi">
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Test text
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</span>
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<script>value='dummy';</script>
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</a>
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"""
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self.assertIsInstance(utils.html_to_text(html_str), str)
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self.assertEqual(utils.html_to_text(html_str), "Test text")
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class TestXPathUtils(SearxTestCase): # pylint: disable=missing-class-docstring
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TEST_DOC = """<ul>
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<li>Text in <b>bold</b> and <i>italic</i> </li>
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<li>Another <b>text</b> <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAUEBAAAACwAAAAAAQABAAACAkQBADs="></li>
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</ul>"""
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def test_get_xpath_cache(self):
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xp1 = utils.get_xpath('//a')
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xp2 = utils.get_xpath('//div')
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xp3 = utils.get_xpath('//a')
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self.assertEqual(id(xp1), id(xp3))
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self.assertNotEqual(id(xp1), id(xp2))
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def test_get_xpath_type(self):
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utils.get_xpath(lxml.etree.XPath('//a'))
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with self.assertRaises(TypeError):
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utils.get_xpath([])
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def test_get_xpath_invalid(self):
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invalid_xpath = '//a[0].text'
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with self.assertRaises(SearxXPathSyntaxException) as context:
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utils.get_xpath(invalid_xpath)
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self.assertEqual(context.exception.message, 'Invalid expression')
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self.assertEqual(context.exception.xpath_str, invalid_xpath)
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def test_eval_xpath_unregistered_function(self):
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doc = html.fromstring(TestXPathUtils.TEST_DOC)
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invalid_function_xpath = 'int(//a)'
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with self.assertRaises(SearxEngineXPathException) as context:
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utils.eval_xpath(doc, invalid_function_xpath)
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self.assertEqual(context.exception.message, 'Unregistered function')
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self.assertEqual(context.exception.xpath_str, invalid_function_xpath)
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def test_eval_xpath(self):
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doc = html.fromstring(TestXPathUtils.TEST_DOC)
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self.assertEqual(utils.eval_xpath(doc, '//p'), [])
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self.assertEqual(utils.eval_xpath(doc, '//i/text()'), ['italic'])
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self.assertEqual(utils.eval_xpath(doc, 'count(//i)'), 1.0)
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def test_eval_xpath_list(self):
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doc = html.fromstring(TestXPathUtils.TEST_DOC)
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# check a not empty list
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self.assertEqual(utils.eval_xpath_list(doc, '//i/text()'), ['italic'])
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# check min_len parameter
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with self.assertRaises(SearxEngineXPathException) as context:
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utils.eval_xpath_list(doc, '//p', min_len=1)
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self.assertEqual(context.exception.message, 'len(xpath_str) < 1')
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self.assertEqual(context.exception.xpath_str, '//p')
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def test_eval_xpath_getindex(self):
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doc = html.fromstring(TestXPathUtils.TEST_DOC)
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# check index 0
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self.assertEqual(utils.eval_xpath_getindex(doc, '//i/text()', 0), 'italic')
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# default is 'something'
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self.assertEqual(utils.eval_xpath_getindex(doc, '//i/text()', 1, default='something'), 'something')
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# default is None
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self.assertIsNone(utils.eval_xpath_getindex(doc, '//i/text()', 1, default=None))
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# index not found
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with self.assertRaises(SearxEngineXPathException) as context:
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utils.eval_xpath_getindex(doc, '//i/text()', 1)
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self.assertEqual(context.exception.message, 'index 1 not found')
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# not a list
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with self.assertRaises(SearxEngineXPathException) as context:
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utils.eval_xpath_getindex(doc, 'count(//i)', 1)
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self.assertEqual(context.exception.message, 'the result is not a list')
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