added test for filled prompt

examples/LLM_Workflows/retrieval_augmented_generation/backend/tests/retrieval_test.py

diff --git a/examples/LLM_Workflows/retrieval_augmented_generation/backend/tests/retrieval_test.py b/examples/LLM_Workflows/retrieval_augmented_generation/backend/tests/retrieval_test.py
index 9405efd..43e2d4a 100644
--- a/examples/LLM_Workflows/retrieval_augmented_generation/backend/tests/retrieval_test.py
+++ b/examples/LLM_Workflows/retrieval_augmented_generation/backend/tests/retrieval_test.py
@@ -36,7 +36,8 @@
     # act
     prompt = retrieval.prompt_to_summarize_chunk(chunk_without_summary, prompt_template)
     # assert
-    assert "{content}" not in prompt 
+    assert "{content}" not in prompt
+    assert prompt == "Prompt template: Chunk text content"
 
 
 def test_prompt_template_to_reduce_summaries():
@@ -53,9 +54,9 @@
     # arrange
     rag_query = "Who is B?"
     chunks = [
-        dict(uuid=0, summary="summary A"),
-        dict(uuid=1, name="John", summary="summary B"),
-        dict(uuid=2, name="Kevin", summary="summary C"),
+        dict(uuid=0, summary="summary A."),
+        dict(uuid=1, name="John", summary="summary B."),
+        dict(uuid=2, name="Kevin", summary="summary C."),
     ]
     prompt_template = "Prompt template: {query}\n{chunks_summary}"
     #act
@@ -63,6 +64,7 @@
     #assert
     assert "{query}" not in prompt
     assert "{chunks_summary}" not in prompt
+    assert prompt == "Prompt template: Who is B?\nsummary A. summary B. summary C."
 
 
 # parametrized alternative to above tests