Add Reddit search engine

tests/unit/engines/test_reddit.py

@@ -0,0 +1,67 @@
+from collections import defaultdict
+import mock
+from searx.engines import reddit
+from searx.testing import SearxTestCase
+from datetime import datetime
+
+
+class TestRedditEngine(SearxTestCase):
+
+    def test_request(self):
+        query = 'test_query'
+        dic = defaultdict(dict)
+        params = reddit.request(query, dic)
+        self.assertTrue('url' in params)
+        self.assertTrue(query in params['url'])
+        self.assertTrue('reddit.com' in params['url'])
+
+    def test_response(self):
+        resp = mock.Mock(text='{}')
+        self.assertEqual(reddit.response(resp), [])
+
+        json = """
+        {
+            "kind": "Listing",
+            "data": {
+                "children": [{
+                    "data": {
+                        "url": "http://google.com/",
+                        "title": "Title number one",
+                        "selftext": "Sample",
+                        "created_utc": 1401219957.0,
+                        "thumbnail": "http://image.com/picture.jpg"
+                    }
+                }, {
+                    "data": {
+                        "url": "https://reddit.com/",
+                        "title": "Title number two",
+                        "selftext": "Dominus vobiscum",
+                        "created_utc": 1438792533.0,
+                        "thumbnail": "self"
+                    }
+                }]
+            }
+        }
+        """
+
+        resp = mock.Mock(text=json)
+        results = reddit.response(resp)
+
+        self.assertEqual(len(results), 2)
+        self.assertEqual(type(results), list)
+
+        # testing first result (picture)
+        r = results[0]
+        self.assertEqual(r['url'], 'http://google.com/')
+        self.assertEqual(r['title'], 'Title number one')
+        self.assertEqual(r['template'], 'images.html')
+        self.assertEqual(r['thumbnail_src'], 'http://image.com/picture.jpg')
+
+        # testing second result (self-post)
+        r = results[1]
+        self.assertEqual(r['url'], 'https://reddit.com/')
+        self.assertEqual(r['title'], 'Title number two')
+        self.assertEqual(r['content'], 'Dominus vobiscum')
+        created = datetime.fromtimestamp(1438792533.0)
+        self.assertEqual(r['publishedDate'], created)
+        self.assertTrue('thumbnail_src' not in r)