feat: solution for 'Повторный экзамен: Граф с рефлексией и доработкой'

tests/test_reflect.py

@@ -0,0 +1,13 @@
+import pytest
+from src.nodes.reflect import ReflectNode
+
+
+def test_reflect_node():
+    state = {"input": "Hello world"}
+    result = ReflectNode.run(state)
+    assert "reflection" in result
+    expected = (
+        "I see that you said: 'Hello world'. "
+        "Let's reflect on that."
+    )
+    assert result["reflection"] == expected