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							from collections import defaultdict
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							import mock
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							from searx.engines import duden
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							from searx.testing import SearxTestCase
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							from datetime import datetime
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							class TestDudenEngine(SearxTestCase):
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							    def test_request(self):
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							        query = 'Haus'
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							        dic = defaultdict(dict)
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							        dic['pageno'] = 1
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							        params = duden.request(query, dic)
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							        self.assertTrue('url' in params)
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							        self.assertTrue(query in params['url'])
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							        self.assertTrue('duden.de' in params['url'])
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							    def test_response(self):
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							        resp = mock.Mock(text='<html></html>')
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							        self.assertEqual(duden.response(resp), [])
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							        html = """
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							        <section class="wide">
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							        <h2><a href="https://this.is.the.url/" class="hidden-link"><strong>This is the title</strong> also here</a></h2>
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							        <p>This is the <strong>content</strong></p>
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							        <a href="https://this.is.the.url/">Zum vollständigen Artikel</a>
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							        </section>
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							        """
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							        resp = mock.Mock(text=html)
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							        results = duden.response(resp)
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							        self.assertEqual(len(results), 1)
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							        self.assertEqual(type(results), list)
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							        # testing result (dictionary entry)
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							        r = results[0]
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							        self.assertEqual(r['url'], 'https://this.is.the.url/')
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							        self.assertEqual(r['title'], 'This is the title also here')
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							        self.assertEqual(r['content'], 'This is the content')
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