Fixed #125: SheerkaErrorManager

Fixed #135: Change services service priorities
Fixed #136: ErrorManager: Implement recognize_error
Fixed #137: BNFNodeParser : Error when parsing regex with sub parsers
Fixed #138: get_last_errors(): real errors sources are lost
Fixed #139: OneError return value removes the origin of the error
Fixed #140: Concept variables are not correctly handled when parsing sub expression
Fixed #143: Implement has_unknown_concepts()

tests/core/test_SheerkaQueryManager.py

@@ -2,6 +2,7 @@ from dataclasses import dataclass
 
 import pytest
 
+from core.builtin_concepts import NotFoundConcept
 from core.builtin_concepts_ids import BuiltinConcepts
 from core.concept import Concept
 from tests.TestUsingMemoryBasedSheerka import TestUsingMemoryBasedSheerka
@@ -143,6 +144,28 @@ class TestSheerkaQueryManager(TestUsingMemoryBasedSheerka):
         res = sheerka.filter_objects(context, lst, mapping=lambda o: o.prop1, predicate="self is a concept")
         assert res == [lst[1], lst[3]]
 
+    def test_i_can_filter_objects_by_type(self):
+        sheerka, context = self.init_test().unpack()
+        lst = [A("a11", "a12"), Concept("foo"), NotImplementedError(), NotFoundConcept()]
+
+        assert sheerka.filter_objects(context, lst, __type="A") == [lst[0]]
+        assert sheerka.filter_objects(context, lst, __type="foo") == [lst[1]]
+
+        assert sheerka.filter_objects(context, lst, __type="NotImplementedError") == [lst[2]]
+        assert sheerka.filter_objects(context, lst, __type=NotImplementedError) == [lst[2]]
+
+        assert sheerka.filter_objects(context, lst, __type=BuiltinConcepts.NOT_FOUND) == [lst[3]]
+        assert sheerka.filter_objects(context, lst, __type=NotFoundConcept) == [lst[3]]
+        assert sheerka.filter_objects(context, lst, __type="NotFoundConcept") == [lst[3]]
+
+    def test_empty_list_is_returned_when_nothing_is_found(self):
+        sheerka, context = self.init_test().unpack()
+        lst = [A("a11", "a12")]
+
+        assert sheerka.filter_objects(context, lst, __type="foo") == []
+        assert sheerka.filter_objects(context, [], __type="foo") == []
+        assert sheerka.filter_objects(context, lst, predicate="self.name == 'bar'") == []
+
     def test_i_must_select_object_property_using_string(self):
         sheerka, context = self.init_test().unpack()