[mod] split searx.search into different processors

see searx.search.processors.abstract.EngineProcessor

First the method searx call the get_params method.

If the return value is not None, then the searx call the method search.

tests/unit/test_search.py

@@ -3,7 +3,6 @@
 from searx.testing import SearxTestCase
 from searx.search import SearchQuery, EngineRef
 import searx.search
-import searx.engines
 
 
 SAFESEARCH = 0
@@ -39,7 +38,7 @@ class SearchTestCase(SearxTestCase):
 
     @classmethod
     def setUpClass(cls):
-        searx.engines.initialize_engines(TEST_ENGINES)
+        searx.search.initialize(TEST_ENGINES)
 
     def test_timeout_simple(self):
         searx.search.max_request_timeout = None

tests/unit/test_standalone_searx.py

@@ -8,8 +8,7 @@ import sys
 from mock import Mock, patch
 from nose2.tools import params
 
-from searx.search import SearchQuery, EngineRef
-from searx.engines import initialize_engines
+from searx.search import SearchQuery, EngineRef, initialize
 from searx.testing import SearxTestCase
 
 
@@ -30,7 +29,7 @@ class StandaloneSearx(SearxTestCase):
     def setUpClass(cls):
         engine_list = [{'engine': 'dummy', 'name': 'engine1', 'shortcut': 'e1'}]
 
-        initialize_engines(engine_list)
+        initialize(engine_list)
 
     def test_parse_argument_no_args(self):
         """Test parse argument without args."""

tests/unit/test_webadapter.py

@@ -17,7 +17,7 @@ TEST_ENGINES = [
         'categories': 'general',
         'shortcut': 'do',
         'timeout': 3.0,
-        'offline': True,
+        'engine_type': 'offline',
         'tokens': ['my-token'],
     },
 ]
@@ -28,7 +28,7 @@ class ValidateQueryCase(SearxTestCase):
 
     @classmethod
     def setUpClass(cls):
-        searx.engines.initialize_engines(TEST_ENGINES)
+        searx.search.initialize(TEST_ENGINES)
 
     def test_query_private_engine_without_token(self):
         preferences = Preferences(['oscar'], ['general'], engines, [])