I can set_attr

tests/non_reg/test_sheerka_non_reg.py

@@ -1163,6 +1163,21 @@ as:
         assert len(res) == 1
         assert res[0].status
 
+    def test_i_can_set_attribute(self):
+        init = [
+            "def concept size",
+            "def concept little",
+            "def concept house",
+            "def concept little x as set_attr(x, size, little) ret x",
+        ]
+        sheerka = self.init_scenario(init)
+
+        res = sheerka.evaluate_user_input("eval little house")
+
+        assert len(res) == 1
+        assert res[0].status
+        assert sheerka.isinstance(res[0].body, "house")
+        assert sheerka.get_attr(res[0].body, sheerka.new("size")) == sheerka.new("little")
 
 class TestSheerkaNonRegFile(TestUsingFileBasedSheerka):
     def test_i_can_def_several_concepts(self):