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81c651b5b2
New truncation logic return a new message list.
It does not update message list by reference/in place since 8a16f5a2a.
So truncation tests should run verification on the truncated chat
history returned by the truncation func instead of the original chat
history passed into the truncation func.
228 lines
11 KiB
Python
228 lines
11 KiB
Python
from copy import deepcopy
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import tiktoken
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from langchain_core.messages.chat import ChatMessage
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from khoj.processor.conversation import utils
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class TestTruncateMessage:
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max_prompt_size = 40
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model_name = "gpt-4o-mini"
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encoder = tiktoken.encoding_for_model(model_name)
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def test_truncate_message_all_small(self):
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# Arrange
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chat_history = generate_chat_history(50)
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# Act
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truncated_chat_history = utils.truncate_messages(chat_history, self.max_prompt_size, self.model_name)
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tokens = sum([utils.count_tokens(message.content, self.encoder) for message in truncated_chat_history])
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# Assert
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# Verify certain properties of the truncated chat history
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assert len(truncated_chat_history) < 50
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assert len(truncated_chat_history) > 5
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assert tokens <= self.max_prompt_size
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def test_truncate_message_only_oldest_big(self):
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# Arrange
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chat_history = generate_chat_history(5)
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big_chat_message = ChatMessage(role="user", content=generate_content(100, suffix="Question?"))
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chat_history.insert(0, big_chat_message)
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# Act
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truncated_chat_history = utils.truncate_messages(chat_history, self.max_prompt_size, self.model_name)
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tokens = sum([utils.count_tokens(message.content, self.encoder) for message in truncated_chat_history])
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# Assert
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# Verify certain properties of the truncated chat history
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assert len(truncated_chat_history) == 5
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assert tokens <= self.max_prompt_size
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def test_truncate_message_with_image(self):
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# Arrange
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image_content_item = {"type": "image_url", "image_url": {"url": "placeholder"}}
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content_list = [{"type": "text", "text": f"{index}"} for index in range(100)]
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content_list += [image_content_item, {"type": "text", "text": "Question?"}]
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big_chat_message = ChatMessage(role="user", content=content_list)
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copy_big_chat_message = deepcopy(big_chat_message)
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chat_history = [big_chat_message]
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initial_tokens = sum([utils.count_tokens(message.content, self.encoder) for message in chat_history])
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# Act
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truncated_chat_history = utils.truncate_messages(chat_history, self.max_prompt_size, self.model_name)
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final_tokens = sum([utils.count_tokens(message.content, self.encoder) for message in truncated_chat_history])
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# Assert
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# Verify certain properties of the truncated chat history
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assert truncated_chat_history[0] != copy_big_chat_message, "Original message should be modified"
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assert truncated_chat_history[0].content[-1]["text"] == "Question?", "Query should be preserved"
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assert initial_tokens > self.max_prompt_size, "Initial tokens should be greater than max prompt size"
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assert final_tokens <= self.max_prompt_size, "Truncated message should be within max prompt size"
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def test_truncate_message_with_content_list(self):
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# Arrange
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chat_history = generate_chat_history(5)
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content_list = [{"type": "text", "text": f"{index}"} for index in range(100)]
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content_list += [{"type": "text", "text": "Question?"}]
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big_chat_message = ChatMessage(role="user", content=content_list)
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copy_big_chat_message = deepcopy(big_chat_message)
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chat_history.append(big_chat_message)
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initial_tokens = sum([utils.count_tokens(message.content, self.encoder) for message in chat_history])
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# Act
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truncated_chat_history = utils.truncate_messages(chat_history, self.max_prompt_size, self.model_name)
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final_tokens = sum([utils.count_tokens(message.content, self.encoder) for message in truncated_chat_history])
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# Assert
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# Verify certain properties of the truncated chat history
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assert len(truncated_chat_history) == 1, (
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"Only most recent message should be present as it itself is larger than context size"
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)
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assert len(truncated_chat_history[0].content) < len(copy_big_chat_message.content), (
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"message content list should be modified"
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)
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assert truncated_chat_history[0].content[-1]["text"] == "Question?", "Query should be preserved"
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assert initial_tokens > self.max_prompt_size, "Initial tokens should be greater than max prompt size"
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assert final_tokens <= self.max_prompt_size, "Truncated message should be within max prompt size"
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def test_truncate_message_first_large(self):
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# Arrange
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chat_history = generate_chat_history(5)
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big_chat_message = ChatMessage(role="user", content=generate_content(100, suffix="Question?"))
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copy_big_chat_message = big_chat_message.model_copy()
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chat_history.append(big_chat_message)
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initial_tokens = sum([utils.count_tokens(message.content, self.encoder) for message in chat_history])
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# Act
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truncated_chat_history = utils.truncate_messages(chat_history, self.max_prompt_size, self.model_name)
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final_tokens = sum([utils.count_tokens(message.content, self.encoder) for message in truncated_chat_history])
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# Assert
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# Verify certain properties of the truncated chat history
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assert len(truncated_chat_history) == 1, (
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"Only most recent message should be present as it itself is larger than context size"
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)
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assert truncated_chat_history[-1] != copy_big_chat_message, "Original message should be modified"
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assert truncated_chat_history[-1].content[0]["text"].endswith("\nQuestion?"), "Query should be preserved"
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assert initial_tokens > self.max_prompt_size, "Initial tokens should be greater than max prompt size"
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assert final_tokens <= self.max_prompt_size, "Truncated message should be within max prompt size"
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def test_truncate_message_large_system_message_first(self):
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# Arrange
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chat_history = generate_chat_history(5)
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chat_history[0].role = "system" # Mark the first message as system message
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big_chat_message = ChatMessage(role="user", content=generate_content(100, suffix="Question?"))
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copy_big_chat_message = big_chat_message.model_copy()
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chat_history.append(big_chat_message)
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initial_tokens = sum([utils.count_tokens(message.content, self.encoder) for message in chat_history])
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# Act
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truncated_chat_history = utils.truncate_messages(chat_history, self.max_prompt_size, self.model_name)
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final_tokens = sum([utils.count_tokens(message.content, self.encoder) for message in truncated_chat_history])
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# Assert
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# Verify certain properties of the truncated chat history
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assert len(truncated_chat_history) == 2, "Expected system message + last big message after truncation"
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assert truncated_chat_history[-1] != copy_big_chat_message, "Original message should be modified"
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assert truncated_chat_history[-1].content[0]["text"].endswith("\nQuestion?"), "Query should be preserved"
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assert initial_tokens > self.max_prompt_size, "Initial tokens should be greater than max prompt size"
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assert final_tokens <= self.max_prompt_size, "Final tokens should be within max prompt size"
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def test_truncate_single_large_non_system_message(self):
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# Arrange
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big_chat_message = ChatMessage(role="user", content=generate_content(100, suffix="Question?"))
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copy_big_chat_message = big_chat_message.model_copy()
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chat_messages = [big_chat_message]
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initial_tokens = sum([utils.count_tokens(message.content, self.encoder) for message in chat_messages])
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# Act
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truncated_chat_history = utils.truncate_messages(chat_messages, self.max_prompt_size, self.model_name)
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final_tokens = sum([utils.count_tokens(message.content, self.encoder) for message in truncated_chat_history])
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# Assert
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# Verify certain properties of the truncated chat history
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assert initial_tokens > self.max_prompt_size, "Initial tokens should be greater than max prompt size"
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assert final_tokens <= self.max_prompt_size, "Final tokens should be within max prompt size"
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assert len(truncated_chat_history) == 1, (
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"Only most recent message should be present as it itself is larger than context size"
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)
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assert truncated_chat_history[0] != copy_big_chat_message, "Original message should be modified"
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assert truncated_chat_history[0].content[0]["text"].endswith("\nQuestion?"), "Query should be preserved"
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def test_truncate_single_large_question(self):
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# Arrange
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big_chat_message_content = [{"type": "text", "text": " ".join(["hi"] * (self.max_prompt_size + 1))}]
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big_chat_message = ChatMessage(role="user", content=big_chat_message_content)
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copy_big_chat_message = big_chat_message.model_copy()
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chat_messages = [big_chat_message]
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initial_tokens = sum([utils.count_tokens(message.content, self.encoder) for message in chat_messages])
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# Act
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truncated_chat_history = utils.truncate_messages(chat_messages, self.max_prompt_size, self.model_name)
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final_tokens = sum([utils.count_tokens(message.content, self.encoder) for message in truncated_chat_history])
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# Assert
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# Verify certain properties of the truncated chat history
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assert initial_tokens > self.max_prompt_size, "Initial tokens should be greater than max prompt size"
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assert final_tokens <= self.max_prompt_size, "Final tokens should be within max prompt size"
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assert len(truncated_chat_history) == 1, (
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"Only most recent message should be present as it itself is larger than context size"
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)
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assert truncated_chat_history[0] != copy_big_chat_message, "Original message should be modified"
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class TestLoadComplexJson:
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def test_load_complex_raw_json_string(self):
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# Arrange
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raw_json = r"""{"key": "value with unescaped " and unescaped \' and escaped \" and escaped \\'"}"""
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expected_json = {"key": "value with unescaped \" and unescaped \\' and escaped \" and escaped \\'"}
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# Act
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parsed_json = utils.load_complex_json(raw_json)
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# Assert
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assert parsed_json == expected_json
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def test_load_complex_json_with_python_code(self):
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# Arrange
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raw_json = r"""{"python": "import os\nvalue = \"\"\"\nfirst line of "text"\nsecond line of 'text'\n\"\"\"\nprint(value)"}"""
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expected_json = {
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"python": 'import os\nvalue = """\nfirst line of "text"\nsecond line of \'text\'\n"""\nprint(value)'
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}
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# Act
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parsed_json = utils.load_complex_json(raw_json)
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# Assert
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assert parsed_json == expected_json
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def test_load_complex_json_inline(self):
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# Arrange
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raw_json = """
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{"key1": "value1", "key2": "value2"}plain text suffix
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"""
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expected_json = {
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"key1": "value1",
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"key2": "value2",
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}
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# Act
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parsed_json = utils.load_complex_json(raw_json)
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# Assert
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assert parsed_json == expected_json
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def generate_content(count, suffix=""):
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return [{"type": "text", "text": " ".join([f"{index}" for index, _ in enumerate(range(count))]) + "\n" + suffix}]
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def generate_chat_history(count):
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return [
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ChatMessage(role="user" if index % 2 == 0 else "assistant", content=[{"type": "text", "text": f"{index}"}])
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for index, _ in enumerate(range(count))
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]
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