src/backend/tests/unit/graph/edge/test_edge_base.py

import pytest
from langflow.components.inputs import ChatInput
from langflow.components.models import OpenAIModelComponent
from langflow.components.outputs import ChatOutput
from langflow.components.prompts import PromptComponent
from langflow.graph import Graph


def test_edge_raises_error_on_invalid_target_handle():
    template = """Answer the user as if you were a pirate.

User: {user_input}

Answer:
"""
    chat_input = ChatInput()
    prompt_component = PromptComponent()
    prompt_component.set(
        template=template,
        user_input=chat_input.message_response,
    )

    openai_component = OpenAIModelComponent()
    openai_component.set(input_values=prompt_component.build_prompt)

    chat_output = ChatOutput()
    chat_output.set(input_value=openai_component.text_response)
    with pytest.raises(ValueError, match="Component OpenAI field 'input_values' might not be a valid input."):
        Graph(start=chat_input, end=chat_output)