🔧 chore(conftest.py): add fixture for one_grouped_chat_json_flow to provide a test data file for one grouped chat

🔧 chore(conftest.py): add one_grouped_chat_json_flow fixture to read and return the contents of the one_group_chat.json file

📝 chore(one_group_chat.json): add one_group_chat.json test data file

This commit adds the one_group_chat.json file to the tests/data directory. The file contains a simple chat with a custom prompt template and conversational memory buffer. It is used for testing purposes.

🔧 chore: update node configuration for ConversationBufferMemory, ChatOpenAI, and LLMChain
📝 docs: update documentation links for ConversationBufferMemory and LLMChain

🔧 fix: update prompt template in LLMChain to include conversation history and text input variables
🔧 fix: update ConversationBufferMemory node to include description and documentation links

🎨 style: format and organize code for better readability and maintainability

tests/conftest.py

@@ -32,6 +32,9 @@ def pytest_configure():
     pytest.GROUPED_CHAT_EXAMPLE_PATH = (
         Path(__file__).parent.absolute() / "data" / "grouped_chat.json"
     )
+    pytest.ONE_GROUPED_CHAT_EXAMPLE_PATH = (
+        Path(__file__).parent.absolute() / "data" / "one_group_chat.json"
+    )
 
     pytest.CODE_WITH_SYNTAX_ERROR = """
 def get_text():
@@ -110,6 +113,12 @@ def grouped_chat_json_flow():
         return f.read()
 
 
+@pytest.fixture
+def one_grouped_chat_json_flow():
+    with open(pytest.ONE_GROUPED_CHAT_EXAMPLE_PATH, "r") as f:
+        return f.read()
+
+
 @pytest.fixture(name="session")
 def session_fixture():
     engine = create_engine(