import pytest from llama_index.core.llms import ChatMessage, MessageRole from private_gpt.components.llm.prompt_helper import ( ChatMLPromptStyle, DefaultPromptStyle, Llama2PromptStyle, MistralPromptStyle, TagPromptStyle, get_prompt_style, ) @pytest.mark.parametrize( ("prompt_style", "expected_prompt_style"), [ ("default", DefaultPromptStyle), ("llama2", Llama2PromptStyle), ("tag", TagPromptStyle), ("mistral", MistralPromptStyle), ("chatml", ChatMLPromptStyle), ], ) def test_get_prompt_style_success(prompt_style, expected_prompt_style): assert isinstance(get_prompt_style(prompt_style), expected_prompt_style) def test_get_prompt_style_failure(): prompt_style = "unknown" with pytest.raises(ValueError) as exc_info: get_prompt_style(prompt_style) assert str(exc_info.value) == f"Unknown prompt_style='{prompt_style}'" def test_tag_prompt_style_format(): prompt_style = TagPromptStyle() messages = [ ChatMessage(content="You are an AI assistant.", role=MessageRole.SYSTEM), ChatMessage(content="Hello, how are you doing?", role=MessageRole.USER), ] expected_prompt = ( "<|system|>: You are an AI assistant.\n" "<|user|>: Hello, how are you doing?\n" "<|assistant|>: " ) assert prompt_style.messages_to_prompt(messages) == expected_prompt def test_tag_prompt_style_format_with_system_prompt(): prompt_style = TagPromptStyle() messages = [ ChatMessage( content="FOO BAR Custom sys prompt from messages.", role=MessageRole.SYSTEM ), ChatMessage(content="Hello, how are you doing?", role=MessageRole.USER), ] expected_prompt = ( "<|system|>: FOO BAR Custom sys prompt from messages.\n" "<|user|>: Hello, how are you doing?\n" "<|assistant|>: " ) assert prompt_style.messages_to_prompt(messages) == expected_prompt def test_mistral_prompt_style_format(): prompt_style = MistralPromptStyle() messages = [ ChatMessage(content="You are an AI assistant.", role=MessageRole.SYSTEM), ChatMessage(content="Hello, how are you doing?", role=MessageRole.USER), ] expected_prompt = ( "[INST] You are an AI assistant. [/INST]" "[INST] Hello, how are you doing? [/INST]" ) assert prompt_style.messages_to_prompt(messages) == expected_prompt def test_chatml_prompt_style_format(): prompt_style = ChatMLPromptStyle() messages = [ ChatMessage(content="You are an AI assistant.", role=MessageRole.SYSTEM), ChatMessage(content="Hello, how are you doing?", role=MessageRole.USER), ] expected_prompt = ( "<|im_start|>system\n" "You are an AI assistant.<|im_end|>\n" "<|im_start|>user\n" "Hello, how are you doing?<|im_end|>\n" "<|im_start|>assistant\n" ) assert prompt_style.messages_to_prompt(messages) == expected_prompt def test_llama2_prompt_style_format(): prompt_style = Llama2PromptStyle() messages = [ ChatMessage(content="You are an AI assistant.", role=MessageRole.SYSTEM), ChatMessage(content="Hello, how are you doing?", role=MessageRole.USER), ] expected_prompt = ( " [INST] <>\n" " You are an AI assistant. \n" "<>\n" "\n" " Hello, how are you doing? [/INST]" ) assert prompt_style.messages_to_prompt(messages) == expected_prompt def test_llama2_prompt_style_with_system_prompt(): prompt_style = Llama2PromptStyle() messages = [ ChatMessage( content="FOO BAR Custom sys prompt from messages.", role=MessageRole.SYSTEM ), ChatMessage(content="Hello, how are you doing?", role=MessageRole.USER), ] expected_prompt = ( " [INST] <>\n" " FOO BAR Custom sys prompt from messages. \n" "<>\n" "\n" " Hello, how are you doing? [/INST]" ) assert prompt_style.messages_to_prompt(messages) == expected_prompt