| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869 | import mockfrom searx.testing import SearxTestCasefrom searx import utilsclass TestUtils(SearxTestCase):    def test_gen_useragent(self):        self.assertIsInstance(utils.gen_useragent(), str)        self.assertIsNotNone(utils.gen_useragent())        self.assertTrue(utils.gen_useragent().startswith('Mozilla'))    def test_highlight_content(self):        self.assertEqual(utils.highlight_content(0, None), None)        self.assertEqual(utils.highlight_content(None, None), None)        self.assertEqual(utils.highlight_content('', None), None)        self.assertEqual(utils.highlight_content(False, None), None)        contents = [            '<html></html>'            'not<'        ]        for content in contents:            self.assertEqual(utils.highlight_content(content, None), content)        content = 'a'        query = 'test'        self.assertEqual(utils.highlight_content(content, query), content)        query = 'a test'        self.assertEqual(utils.highlight_content(content, query), content)class TestHTMLTextExtractor(SearxTestCase):    def setUp(self):        self.html_text_extractor = utils.HTMLTextExtractor()    def test__init__(self):        self.assertEqual(self.html_text_extractor.result, [])    def test_handle_charref(self):        self.html_text_extractor.handle_charref('xF')        self.assertIn(u'\x0f', self.html_text_extractor.result)        self.html_text_extractor.handle_charref('XF')        self.assertIn(u'\x0f', self.html_text_extractor.result)        self.html_text_extractor.handle_charref('97')        self.assertIn(u'a', self.html_text_extractor.result)    def test_handle_entityref(self):        entity = 'test'        self.html_text_extractor.handle_entityref(entity)        self.assertIn(entity, self.html_text_extractor.result)class TestUnicodeWriter(SearxTestCase):    def setUp(self):        self.unicode_writer = utils.UnicodeWriter(mock.MagicMock())    def test_write_row(self):        row = [1, 2, 3]        self.assertEqual(self.unicode_writer.writerow(row), None)    def test_write_rows(self):        self.unicode_writer.writerow = mock.MagicMock()        rows = [1, 2, 3]        self.unicode_writer.writerows(rows)        self.assertEqual(self.unicode_writer.writerow.call_count, len(rows))
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