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"""
Unit tests for llm_helper module.
"""
from unittest.mock import patch, MagicMock
import pytest
from slidedeckai.helpers.llm_helper import (
get_provider_model,
is_valid_llm_provider_model,
get_litellm_model_name,
stream_litellm_completion,
get_litellm_llm,
)
from slidedeckai.global_config import GlobalConfig
@pytest.mark.parametrize(
'provider_model, use_ollama, expected',
[
('[co]command', False, ('co', 'command')),
('[gg]gemini-pro', False, ('gg', 'gemini-pro')),
('[or]gpt-4', False, ('or', 'gpt-4')),
('mistral', True, (GlobalConfig.PROVIDER_OLLAMA, 'mistral')),
('llama2', True, (GlobalConfig.PROVIDER_OLLAMA, 'llama2')),
('invalid[]model', False, ('', '')),
('', False, ('', '')),
('[invalid]model', False, ('', '')),
('[hf]mistral', False, ('', '')), # hf is not in VALID_PROVIDERS
],
)
def test_get_provider_model(provider_model, use_ollama, expected):
"""Test get_provider_model with various inputs."""
result = get_provider_model(provider_model, use_ollama)
assert result == expected
@pytest.mark.parametrize(
(
'provider, model, api_key, azure_endpoint_url,'
' azure_deployment_name, azure_api_version, expected'
),
[
# Valid non-Azure cases
('co', 'command', 'valid-key-12345', '', '', '', True),
('gg', 'gemini-pro', 'valid-key-12345', '', '', '', True),
('or', 'gpt-4', 'valid-key-12345', '', '', '', True),
# Invalid cases
('', 'model', 'key', '', '', '', False),
('invalid', 'model', 'key', '', '', '', False),
('co', '', 'key', '', '', '', False),
('co', 'model', '', '', '', '', False),
('co', 'model', 'short', '', '', '', False),
# Ollama cases (no API key needed)
(GlobalConfig.PROVIDER_OLLAMA, 'llama2', '', '', '', '', True),
# Azure cases
(
GlobalConfig.PROVIDER_AZURE_OPENAI,
'gpt-4',
'valid-key-12345',
'https://valid.azure.com',
'deployment1',
'2024-02-01',
True,
),
(
GlobalConfig.PROVIDER_AZURE_OPENAI,
'gpt-4',
'valid-key-12345',
'https://invalid-url',
'deployment1',
'2024-02-01',
True, # URL validation is not done
),
(
GlobalConfig.PROVIDER_AZURE_OPENAI,
'gpt-4',
'valid-key-12345',
'https://valid.azure.com',
'',
'2024-02-01',
False,
),
],
)
def test_is_valid_llm_provider_model(
provider,
model,
api_key,
azure_endpoint_url,
azure_deployment_name,
azure_api_version,
expected,
):
"""Test is_valid_llm_provider_model with various inputs."""
result = is_valid_llm_provider_model(
provider,
model,
api_key,
azure_endpoint_url,
azure_deployment_name,
azure_api_version,
)
assert result == expected
@pytest.mark.parametrize(
'provider, model, expected',
[
(GlobalConfig.PROVIDER_HUGGING_FACE, 'mistral', 'huggingface/mistral'),
(GlobalConfig.PROVIDER_GOOGLE_GEMINI, 'gemini-pro', 'gemini/gemini-pro'),
(GlobalConfig.PROVIDER_OPENROUTER, 'openai/gpt-4', 'openrouter/openai/gpt-4'),
(GlobalConfig.PROVIDER_COHERE, 'command', 'cohere/command'),
(GlobalConfig.PROVIDER_TOGETHER_AI, 'llama2', 'together_ai/llama2'),
(GlobalConfig.PROVIDER_OLLAMA, 'mistral', 'ollama/mistral'),
('invalid', 'model', None),
],
)
def test_get_litellm_model_name(provider, model, expected):
"""Test get_litellm_model_name with various providers and models."""
result = get_litellm_model_name(provider, model)
assert result == expected
@patch('slidedeckai.helpers.llm_helper.litellm')
def test_stream_litellm_completion_success(mock_litellm):
"""Test successful streaming completion."""
# Mock response chunks
mock_chunk1 = MagicMock()
mock_chunk1.choices = [
MagicMock(delta=MagicMock(content='Hello')),
]
mock_chunk2 = MagicMock()
mock_chunk2.choices = [
MagicMock(delta=MagicMock(content=' world')),
]
mock_litellm.completion.return_value = [mock_chunk1, mock_chunk2]
messages = [{'role': 'user', 'content': 'Say hello'}]
result = list(
stream_litellm_completion(
provider='hf',
model='mistral',
messages=messages,
max_tokens=100,
api_key='test-key',
)
)
assert result == ['Hello', ' world']
mock_litellm.completion.assert_called_once()
@patch('slidedeckai.helpers.llm_helper.litellm')
def test_stream_litellm_completion_azure(mock_litellm):
"""Test streaming completion with Azure OpenAI."""
mock_chunk = MagicMock()
mock_chunk.choices = [
MagicMock(delta=MagicMock(content='Response')),
]
mock_litellm.completion.return_value = [mock_chunk]
messages = [{'role': 'user', 'content': 'Test'}]
result = list(
stream_litellm_completion(
provider=GlobalConfig.PROVIDER_AZURE_OPENAI,
model='gpt-4',
messages=messages,
max_tokens=100,
api_key='test-key',
azure_endpoint_url='https://test.azure.com',
azure_deployment_name='deployment1',
azure_api_version='2024-02-01',
)
)
assert result == ['Response']
mock_litellm.completion.assert_called_once()
@patch('slidedeckai.helpers.llm_helper.litellm')
def test_stream_litellm_completion_error(mock_litellm):
"""Test error handling in streaming completion."""
mock_litellm.completion.side_effect = Exception('API Error')
messages = [{'role': 'user', 'content': 'Test'}]
with pytest.raises(Exception) as exc_info:
list(
stream_litellm_completion(
provider='hf',
model='mistral',
messages=messages,
max_tokens=100,
api_key='test-key',
)
)
assert str(exc_info.value) == 'API Error'
@patch('slidedeckai.helpers.llm_helper.stream_litellm_completion')
def test_get_litellm_llm(mock_stream):
"""Test LiteLLM wrapper creation and streaming."""
mock_stream.return_value = iter(['Hello', ' world'])
llm = get_litellm_llm(
provider='hf',
model='mistral',
max_new_tokens=100,
api_key='test-key',
)
result = list(llm.stream('Say hello'))
assert result == ['Hello', ' world']
mock_stream.assert_called_once()
def test_litellm_not_installed():
"""Test behavior when LiteLLM is not installed."""
with patch('slidedeckai.helpers.llm_helper.litellm', None) as mock_litellm:
from slidedeckai.helpers.llm_helper import stream_litellm_completion
with pytest.raises(ImportError) as exc_info:
# Try to use stream_litellm_completion which requires LiteLLM
list(stream_litellm_completion(
provider='co',
model='command',
messages=[],
max_tokens=100,
api_key='test-key'
))
assert 'LiteLLM is not installed' in str(exc_info.value)
@patch('slidedeckai.helpers.llm_helper.litellm')
def test_stream_litellm_completion_message_format(mock_litellm):
"""Test handling different message format in streaming response."""
# Test message format instead of delta format
mock_chunk = MagicMock()
mock_delta = MagicMock()
mock_delta.content = None # First chunk has no content
mock_choices = [MagicMock(delta=mock_delta)]
mock_chunk.choices = mock_choices
# Second chunk with content
mock_chunk2 = MagicMock()
mock_delta2 = MagicMock()
mock_delta2.content = 'Alternative format'
mock_choices2 = [MagicMock(delta=mock_delta2)]
mock_chunk2.choices = mock_choices2
mock_litellm.completion.return_value = [mock_chunk, mock_chunk2]
messages = [{'role': 'user', 'content': 'Test'}]
result = list(
stream_litellm_completion(
provider='hf',
model='mistral',
messages=messages,
max_tokens=100,
api_key='test-key',
)
)
assert result == ['Alternative format']
mock_litellm.completion.assert_called_once()
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