Added is_lesser and is_greatest in SheerkaComparison

tests/non_reg/test_sheerka_non_reg.py

@@ -167,7 +167,7 @@ as:
 
         assert len(res) == 1
         assert not res[0].status
-        assert sheerka.isinstance(res[0].value, BuiltinConcepts.CONCEPT_ALREADY_DEFINED)
+        assert sheerka.isinstance(res[0].value, BuiltinConcepts.ALREADY_DEFINED)
 
     @pytest.mark.parametrize("text", [
         "",
@@ -891,16 +891,17 @@ as:
         assert sheerka.get_concepts_weights("some_prop") == {'1001': 1, '1002': 2, '1003': 3, '1004': 4}
 
     def test_i_can_evaluate_expression_when_using_token_concept(self):
-        sheerka, context, one, two, plus = self.init_concepts(
+        sheerka, context, one, two, three, is_less_than = self.init_concepts(
             Concept("one", body="1"),
             Concept("two", body="2"),
+            Concept("three", body="3"),
             self.from_def_concept("<", "a < b", ["a", "b"], body="set_is_less_than('some_prop', a, b)")
         )
 
         expression = "c:one: < c:two:"
         res = sheerka.evaluate_user_input(expression)
         assert res[0].status
-        assert res[0].body == CMV(plus, a="c:one:", b="c:two:")
+        assert res[0].body == CMV(is_less_than, a="c:one:", b="c:two:")
         assert res[0].body.a == NotInit  # concept is not evaluated
         assert res[0].body.b == NotInit  # concept is not evaluated
 
@@ -911,11 +912,11 @@ as:
         assert sheerka.get_concepts_weights("some_prop") == {'1001': 1, '1002': 2}
 
         # it now also works using the concepts names
-        expression = "eval one < two"
+        expression = "eval two < three"
         res = sheerka.evaluate_user_input(expression)
         assert res[0].status
         assert sheerka.isinstance(res[0].body, BuiltinConcepts.SUCCESS)
-        assert sheerka.get_concepts_weights("some_prop") == {'1001': 1, '1002': 2}
+        assert sheerka.get_concepts_weights("some_prop") == {'1001': 1, '1002': 2, '1003': 3}
 
     def test_i_can_detect_multiple_errors_when_evaluating_a_concept(self):
         sheerka, context, foo, plus_one = self.init_concepts(