Fixed #20: I can parse simple concepts

tests/evaluators/test_DefConceptEvaluator.py

@@ -92,3 +92,16 @@ class TestDefConceptEvaluator(BaseTest):
             new_concept = res.new[0].value
             assert context.sheerka.isinstance(new_concept, BuiltinConcepts.NEW_CONCEPT)
             assert new_concept.body.variables == expected
+            assert new_concept.body.parameters == set(item[0] for item in expected)
+
+    def test_i_can_define_variables_that_are_not_parameters(self, context, evaluator):
+        with NewOntology(context, "test_i_can_define_variables_that_are_not_parameters"):
+            ret_val_input = get_ret_val_from(context, "def concept color def_var color_name")
+            res = evaluator.eval(context, None, ret_val_input)
+
+            assert len(res.new) == 1
+            assert res.new[0].status
+            new_concept = res.new[0].value
+            assert context.sheerka.isinstance(new_concept, BuiltinConcepts.NEW_CONCEPT)
+            assert new_concept.body.variables == [("color_name", NotInit)]
+            assert new_concept.body.parameters == set()