add year filter to engines with time range support && tests

Following engines does not support "Last year":
 * Bing News
 * DeviantArt
 * DuckDuckGo
 * Yahoo
 * YouTube (noapi)

searx/engines/bing_news.py

@@ -66,6 +66,9 @@ def _get_url(query, language, offset, time_range):
 
 # do search-request
 def request(query, params):
+    if params['time_range'] and params['time_range'] not in time_range_dict:
+        return params
+
     offset = (params['pageno'] - 1) * 10 + 1
 
     if params['language'] == 'all':

searx/engines/deviantart.py

@@ -34,6 +34,9 @@ time_range_dict = {'day': 11,
 
 # do search-request
 def request(query, params):
+    if params['time_range'] and params['time_range'] not in time_range_dict:
+        return params
+
     offset = (params['pageno'] - 1) * 24
 
     params['url'] = search_url.format(offset=offset,

searx/engines/duckduckgo.py

@@ -41,6 +41,9 @@ content_xpath = './/a[@class="result__snippet"]'
 
 # do search-request
 def request(query, params):
+    if params['time_range'] and params['time_range'] not in time_range_dict:
+        return params
+
     offset = (params['pageno'] - 1) * 30
 
     if params['language'] == 'all':

searx/engines/yahoo.py

@@ -77,6 +77,9 @@ def _get_language(params):
 
 # do search-request
 def request(query, params):
+    if params['time_range'] and params['time_range'] not in time_range_dict:
+        return params
+
     offset = (params['pageno'] - 1) * 10 + 1
     language = _get_language(params)
 

searx/engines/youtube_noapi.py

@@ -25,7 +25,8 @@ search_url = base_url + '?search_query={query}&page={page}'
 time_range_url = '&sp=EgII{time_range}%253D%253D'
 time_range_dict = {'day': 'Ag',
                    'week': 'Aw',
-                   'month': 'BA'}
+                   'month': 'BA',
+                   'year': 'BQ'}
 
 embedded_url = '<iframe width="540" height="304" ' +\
     'data-src="//www.youtube-nocookie.com/embed/{videoid}" ' +\

tests/unit/engines/test_bing_news.py

@@ -23,6 +23,13 @@ class TestBingNewsEngine(SearxTestCase):
         params = bing_news.request(query, dicto)
         self.assertIn('en', params['url'])
 
+    def test_no_url_in_request_year_time_range(self):
+        dicto = defaultdict(dict)
+        query = 'test_query'
+        dicto['time_range'] = 'year'
+        params = bing_news.request(query, dicto)
+        self.assertEqual({}, params['url'])
+
     def test_response(self):
         self.assertRaises(AttributeError, bing_news.response, None)
         self.assertRaises(AttributeError, bing_news.response, [])

tests/unit/engines/test_deviantart.py

@@ -7,8 +7,8 @@ from searx.testing import SearxTestCase
 class TestDeviantartEngine(SearxTestCase):
 
     def test_request(self):
-        query = 'test_query'
         dicto = defaultdict(dict)
+        query = 'test_query'
         dicto['pageno'] = 0
         dicto['time_range'] = ''
         params = deviantart.request(query, dicto)
@@ -16,6 +16,13 @@ class TestDeviantartEngine(SearxTestCase):
         self.assertTrue(query in params['url'])
         self.assertTrue('deviantart.com' in params['url'])
 
+    def test_no_url_in_request_year_time_range(self):
+        dicto = defaultdict(dict)
+        query = 'test_query'
+        dicto['time_range'] = 'year'
+        params = deviantart.request(query, dicto)
+        self.assertEqual({}, params['url'])
+
     def test_response(self):
         self.assertRaises(AttributeError, deviantart.response, None)
         self.assertRaises(AttributeError, deviantart.response, [])

tests/unit/engines/test_duckduckgo.py

@@ -19,6 +19,13 @@ class TestDuckduckgoEngine(SearxTestCase):
         self.assertIn('duckduckgo.com', params['url'])
         self.assertIn('ch-de', params['url'])
 
+    def test_no_url_in_request_year_time_range(self):
+        dicto = defaultdict(dict)
+        query = 'test_query'
+        dicto['time_range'] = 'year'
+        params = duckduckgo.request(query, dicto)
+        self.assertEqual({}, params['url'])
+
     def test_response(self):
         self.assertRaises(AttributeError, duckduckgo.response, None)
         self.assertRaises(AttributeError, duckduckgo.response, [])

tests/unit/engines/test_yahoo.py

@@ -46,6 +46,13 @@ class TestYahooEngine(SearxTestCase):
         self.assertIn('en', params['cookies']['sB'])
         self.assertIn('en', params['url'])
 
+    def test_no_url_in_request_year_time_range(self):
+        dicto = defaultdict(dict)
+        query = 'test_query'
+        dicto['time_range'] = 'year'
+        params = yahoo.request(query, dicto)
+        self.assertEqual({}, params['url'])
+
     def test_response(self):
         self.assertRaises(AttributeError, yahoo.response, None)
         self.assertRaises(AttributeError, yahoo.response, [])