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tokencost/tests/test_llama_index_callbacks.py
2024-01-03 15:16:32 -08:00

64 lines
2.1 KiB
Python

# test_llama_index.py
import pytest
from tokencost.callbacks import llama_index
from llama_index.callbacks.schema import CBEventType, EventPayload
from unittest.mock import MagicMock
# Mock the calculate_prompt_cost and calculate_completion_cost functions
# and the USD_PER_TPU constant
STRING = "Hello, world!"
@pytest.fixture
def mock_tokencost(monkeypatch):
monkeypatch.setattr('tokencost.calculate_prompt_cost', MagicMock(return_value=100))
monkeypatch.setattr('tokencost.calculate_completion_cost', MagicMock(return_value=200))
monkeypatch.setattr('tokencost.USD_PER_TPU', 10)
# Mock the ChatMessage class
@pytest.fixture
def mock_chat_message(monkeypatch):
class MockChatMessage:
def __init__(self, text):
self.text = text
def __str__(self):
return self.text
monkeypatch.setattr('llama_index.llms.ChatMessage', MockChatMessage)
return MockChatMessage
# Test the _calc_llm_event_cost method for prompt and completion
def test_calc_llm_event_cost_prompt_completion(mock_tokencost, capsys):
handler = llama_index.TokenCostHandler(model='gpt-3.5-turbo')
payload = {
EventPayload.PROMPT: STRING,
EventPayload.COMPLETION: STRING
}
handler._calc_llm_event_cost(payload)
captured = capsys.readouterr()
assert "# Prompt cost: 6e-06" in captured.out
assert "# Completion: 8e-06" in captured.out
# Test the _calc_llm_event_cost method for messages and response
def test_calc_llm_event_cost_messages_response(mock_tokencost, mock_chat_message, capsys):
handler = llama_index.TokenCostHandler(model='gpt-3.5-turbo')
payload = {
EventPayload.MESSAGES: [mock_chat_message("message 1"), mock_chat_message("message 2")],
EventPayload.RESPONSE: "test response"
}
handler._calc_llm_event_cost(payload)
captured = capsys.readouterr()
assert "# Prompt cost: 1.05e-05" in captured.out
assert "# Completion: 4e-06" in captured.out
# Additional tests can be written for start_trace, end_trace, on_event_start, and on_event_end
# depending on the specific logic and requirements of those methods.