[refactor] typification of SearXNG / EngineResults

In [1] and [2] we discussed the need of a Result.results property and how we can
avoid unclear code.  This patch implements a class for the reslut-lists of
engines::

    searx.result_types.EngineResults

A simple example for the usage in engine development::

    from searx.result_types import EngineResults
    ...
    def response(resp) -> EngineResults:
        res = EngineResults()
        ...
        res.add( res.types.Answer(answer="lorem ipsum ..", url="https://example.org") )
        ...
        return res

[1] https://github.com/searxng/searxng/pull/4183#pullrequestreview-257400034
[2] https://github.com/searxng/searxng/pull/4183#issuecomment-2614301580
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/tests/unit/test_plugin_calculator.py b/tests/unit/test_plugin_calculator.py
index f75a565db..2deba35b8 100644
--- a/tests/unit/test_plugin_calculator.py
+++ b/tests/unit/test_plugin_calculator.py
@@ -38,7 +38,7 @@ class PluginCalculator(SearxTestCase):
         with self.app.test_request_context():
             sxng_request.preferences = self.pref
             query = "1+1"
-            answer = Answer(results=[], answer=f"{query} = {eval(query)}")  # pylint: disable=eval-used
+            answer = Answer(answer=f"{query} = {eval(query)}")  # pylint: disable=eval-used
 
             search = do_post_search(query, self.storage, pageno=1)
             self.assertIn(answer, search.result_container.answers)
@@ -81,7 +81,7 @@ class PluginCalculator(SearxTestCase):
         with self.app.test_request_context():
             self.pref.parse_dict({"locale": lang})
             sxng_request.preferences = self.pref
-            answer = Answer(results=[], answer=f"{query} = {res}")
+            answer = Answer(answer=f"{query} = {res}")
 
             search = do_post_search(query, self.storage)
             self.assertIn(answer, search.result_container.answers)