Files
letta-server/tests/test_memory.py

357 lines
14 KiB
Python

from types import SimpleNamespace
import pytest
from letta.constants import CORE_MEMORY_LINE_NUMBER_WARNING
from letta.schemas.block import Block, FileBlock
from letta.schemas.enums import AgentType
from letta.schemas.memory import ChatMemory, Memory
def make_source(id_: str, name: str, description: str | None = None, instructions: str | None = None):
return SimpleNamespace(id=id_, name=name, description=description, instructions=instructions)
@pytest.fixture
def chat_memory():
return ChatMemory(persona="Chat Agent", human="User")
def test_chat_memory_init_and_utils(chat_memory: Memory):
assert chat_memory.get_block("persona").value == "Chat Agent"
assert chat_memory.get_block("human").value == "User"
assert set(chat_memory.list_block_labels()) == {"persona", "human"}
def test_memory_limit_validation(chat_memory: Memory):
with pytest.raises(ValueError):
ChatMemory(persona="x " * 60000, human="y " * 60000)
with pytest.raises(ValueError):
chat_memory.get_block("persona").value = "x " * 60000
def test_get_block_not_found(chat_memory: Memory):
with pytest.raises(KeyError):
chat_memory.get_block("missing")
def test_update_block_value_type_error(chat_memory: Memory):
with pytest.raises(ValueError):
chat_memory.update_block_value("persona", 123) # type: ignore[arg-type]
def test_update_block_value_success(chat_memory: Memory):
chat_memory.update_block_value("human", "Hi")
assert chat_memory.get_block("human").value == "Hi"
def test_compile_standard_blocks_metadata_and_values():
m = Memory(
agent_type=AgentType.memgpt_agent,
blocks=[
Block(label="persona", value="I am P", limit=100, read_only=True),
Block(label="human", value="Hello", limit=100),
],
)
out = m.compile()
assert "<memory_blocks>" in out
assert "<persona>" in out and "</persona>" in out
assert "<human>" in out and "</human>" in out
assert "- read_only=true" in out
assert "- chars_current=6" in out # len("Hello")
def test_compile_line_numbered_blocks_sleeptime():
m = Memory(agent_type=AgentType.sleeptime_agent, blocks=[Block(label="notes", value="line1\nline2", limit=100)])
out = m.compile()
assert "<memory_blocks>" in out
# Without llm_config, should NOT show line numbers (backward compatibility)
assert CORE_MEMORY_LINE_NUMBER_WARNING not in out
assert "1→ line1" not in out and "2→ line2" not in out
assert "line1" in out and "line2" in out # Content should still be there
def test_compile_line_numbered_blocks_memgpt_v2():
m = Memory(agent_type=AgentType.memgpt_v2_agent, blocks=[Block(label="notes", value="a\nb", limit=100)])
out = m.compile()
# Without llm_config, should NOT show line numbers (backward compatibility)
assert "1→ a" not in out and "2→ b" not in out
assert "a" in out and "b" in out # Content should still be there
def test_compile_line_numbered_blocks_with_anthropic():
"""Test that line numbers appear when using Anthropic models."""
from letta.schemas.llm_config import LLMConfig
m = Memory(agent_type=AgentType.letta_v1_agent, blocks=[Block(label="notes", value="line1\nline2", limit=100)])
anthropic_config = LLMConfig(model="claude-3-sonnet-20240229", model_endpoint_type="anthropic", context_window=200000)
out = m.compile(llm_config=anthropic_config)
assert "<memory_blocks>" in out
assert CORE_MEMORY_LINE_NUMBER_WARNING in out
assert "1→ line1" in out and "2→ line2" in out
def test_compile_line_numbered_blocks_with_openai():
"""Test that line numbers do NOT appear when using OpenAI models."""
from letta.schemas.llm_config import LLMConfig
m = Memory(agent_type=AgentType.letta_v1_agent, blocks=[Block(label="notes", value="line1\nline2", limit=100)])
openai_config = LLMConfig(model="gpt-4", model_endpoint_type="openai", context_window=128000)
out = m.compile(llm_config=openai_config)
assert "<memory_blocks>" in out
assert CORE_MEMORY_LINE_NUMBER_WARNING not in out
assert "1→ line1" not in out and "2→ line2" not in out
assert "line1" in out and "line2" in out # Content should still be there
def test_compile_empty_returns_empty_string():
m = Memory(agent_type=AgentType.memgpt_agent, blocks=[])
assert m.compile() == ""
def test_tool_usage_rules_inclusion_and_order():
m = Memory(agent_type=AgentType.memgpt_agent, blocks=[Block(label="a", value="b", limit=100)])
rules = Block(label="tool_usage_rules", value="RVAL", description="RDESCR", limit=100)
out = m.compile(tool_usage_rules=rules)
assert "<tool_usage_rules>" in out
assert "RDESCR" in out and "RVAL" in out
assert out.index("</memory_blocks>") < out.index("<tool_usage_rules>")
def test_directories_common_includes_files_and_metadata():
src = make_source("src1", "project", "Sdesc", "Sinst")
fb = FileBlock(label="fileA", value="data", limit=100, file_id="f1", source_id="src1", is_open=True, read_only=True)
m = Memory(agent_type=AgentType.memgpt_agent, blocks=[Block(label="x", value="y", limit=10)], file_blocks=[fb])
out = m.compile(sources=[src], max_files_open=3)
assert "<directories>" in out and "</directories>" in out
assert "<file_limits>" in out
assert "- current_files_open=1" in out and "- max_files_open=3" in out
assert "<description>Sdesc</description>" in out
assert "<instructions>Sinst</instructions>" in out
assert 'name="fileA"' in out
assert "- read_only=true" in out
assert "<value>\ndata\n</value>" in out
def test_directories_common_omits_empty_value():
src = make_source("src1", "project")
fb = FileBlock(label="fileA", value="", limit=100, file_id="f1", source_id="src1", is_open=True)
m = Memory(agent_type=AgentType.memgpt_agent, blocks=[], file_blocks=[fb])
out = m.compile(sources=[src])
assert "<directories>" in out
assert "<value>" not in out # omitted for empty value in common path
def test_directories_react_nested_label_and_status_counts():
src = make_source("src1", "project")
fb1 = FileBlock(label="fileA", value="content", limit=100, file_id="f1", source_id="src1", is_open=True)
fb2 = FileBlock(label="fileB", value="", limit=100, file_id="f2", source_id="src1", is_open=True)
m = Memory(agent_type=AgentType.react_agent, blocks=[Block(label="ignore", value="zz", limit=5)], file_blocks=[fb1, fb2])
out = m.compile(sources=[src], max_files_open=5)
assert "<memory_blocks>" not in out
assert "<directories>" in out
assert '<file status="open">' in out
assert '<file status="closed">' in out
assert "<fileA>" in out and "</fileA>" in out
assert "- current_files_open=1" in out
def test_directories_file_limits_absent_when_none():
src = make_source("src1", "project")
fb = FileBlock(label="fileA", value="x", limit=100, file_id="f1", source_id="src1", is_open=True)
m = Memory(agent_type=AgentType.memgpt_agent, blocks=[], file_blocks=[fb])
out = m.compile(sources=[src], max_files_open=None)
assert "<directories>" in out
assert "<file_limits>" not in out
def test_agent_type_as_string_equivalent_behavior():
src = make_source("src1", "project")
m = Memory(agent_type="workflow_agent", blocks=[])
out = m.compile(sources=[src])
assert "<directories>" in out
assert "<memory_blocks>" not in out
def test_file_blocks_duplicates_pruned_and_warning(caplog):
caplog.clear()
src = make_source("s", "n")
fb1 = FileBlock(label="dup", value="a", limit=100, file_id="f1", source_id="s", is_open=True)
fb2 = FileBlock(label="dup", value="b", limit=100, file_id="f2", source_id="s", is_open=True)
with caplog.at_level("WARNING", logger="letta.schemas.memory"):
m = Memory(agent_type=AgentType.memgpt_agent, blocks=[], file_blocks=[fb1, fb2])
out = m.compile(sources=[src])
assert caplog.records
assert any("Duplicate block labels found" in r.message for r in caplog.records)
assert out.count('name="dup"') == 1
@pytest.mark.asyncio
async def test_compile_async_matches_sync():
m = Memory(agent_type=AgentType.memgpt_agent, blocks=[Block(label="a", value="b", limit=10)])
assert await m.compile_async() == m.compile()
def test_prompt_template_deprecated_noop():
m = Memory(agent_type=AgentType.memgpt_agent, blocks=[])
m.set_prompt_template("foo")
assert m.get_prompt_template() == "foo"
def test_sources_without_descriptions_or_instructions():
src = make_source("src1", "project", None, None)
fb = FileBlock(label="fileA", value="data", limit=100, file_id="f1", source_id="src1", is_open=True)
m = Memory(agent_type=AgentType.memgpt_agent, blocks=[], file_blocks=[fb])
out = m.compile(sources=[src])
assert "<description>" not in out or "<description></description>" not in out
assert "<instructions>" not in out
def test_read_only_metadata_in_file_and_block():
src = make_source("src1", "project")
fb = FileBlock(label="fileA", value="data", limit=100, file_id="f1", source_id="src1", is_open=True, read_only=True)
m = Memory(agent_type=AgentType.memgpt_agent, blocks=[Block(label="x", value="y", limit=10, read_only=True)], file_blocks=[fb])
out = m.compile(sources=[src])
assert out.count("- read_only=true") >= 2
def test_current_files_open_counts_truthy_only():
src = make_source("src1", "project")
fb1 = FileBlock(label="fileA", value="data", limit=100, file_id="f1", source_id="src1", is_open=True)
fb2 = FileBlock(label="fileB", value="", limit=100, file_id="f2", source_id="src1", is_open=False)
fb3 = FileBlock(label="fileC", value="", limit=100, file_id="f3", source_id="src1", is_open=False)
m = Memory(agent_type=AgentType.react_agent, blocks=[], file_blocks=[fb1, fb2, fb3])
out = m.compile(sources=[src], max_files_open=10)
assert "- current_files_open=1" in out
def test_compile_git_memory_filesystem_handles_leaf_directory_collisions():
"""Git memory filesystem rendering should tolerate label prefix collisions.
Example collisions:
- leaf at "system" and children under "system/..."
- leaf at "system/human" and children under "system/human/..."
These occur naturally in git-backed memory where both index-like blocks and
nested blocks can exist.
"""
m = Memory(
agent_type=AgentType.letta_v1_agent,
git_enabled=True,
blocks=[
Block(label="system", value="root", limit=100),
Block(label="system/human", value="human index", limit=100),
Block(label="system/human/context", value="context", limit=100),
],
)
out = m.compile()
# Should include the filesystem view and not raise.
assert "<memory_filesystem>" in out
assert "system/" in out
assert "system.md" in out
assert "human.md" in out
def test_compile_git_memory_filesystem_renders_descriptions_for_non_system_files():
"""Files outside system/ should render their description in the filesystem tree.
e.g. `reference/api.md (Contains API specifications)`
System files should NOT render descriptions in the tree.
"""
m = Memory(
agent_type=AgentType.letta_v1_agent,
git_enabled=True,
blocks=[
Block(label="system/human", value="human data", limit=100, description="The human block"),
Block(label="system/persona", value="persona data", limit=100, description="The persona block"),
Block(label="reference/api", value="api specs", limit=100, description="Contains API specifications"),
Block(label="notes", value="my notes", limit=100, description="Personal notes and reminders"),
],
)
out = m.compile()
# Filesystem tree should exist
assert "<memory_filesystem>" in out
# Non-system files should have descriptions rendered
assert "api.md (Contains API specifications)" in out
assert "notes.md (Personal notes and reminders)" in out
# System files should NOT have descriptions in the tree
assert "human.md (The human block)" not in out
assert "persona.md (The persona block)" not in out
# But they should still be in the tree (without description)
assert "human.md" in out
assert "persona.md" in out
def test_compile_git_memory_filesystem_no_description_when_empty():
"""Files outside system/ with no description should render without parentheses."""
m = Memory(
agent_type=AgentType.letta_v1_agent,
git_enabled=True,
blocks=[
Block(label="system/human", value="human data", limit=100),
Block(label="notes", value="my notes", limit=100),
Block(label="reference/api", value="api specs", limit=100, description="API docs"),
],
)
out = m.compile()
# notes.md has no description, so no parentheses
assert "notes.md\n" in out or "notes.md\n" in out
# reference/api.md has a description
assert "api.md (API docs)" in out
def test_compile_git_memory_filesystem_condenses_skills_to_top_level_entries():
"""skills/ should render as top-level skill folders with description.
We intentionally avoid showing nested files under skills/ in the system prompt
tree to keep context concise.
"""
m = Memory(
agent_type=AgentType.letta_v1_agent,
git_enabled=True,
blocks=[
Block(label="system/human", value="human data", limit=100),
Block(
label="skills/searching-messages/SKILL",
value="# searching messages",
limit=100,
description="Search past messages to recall context.",
),
Block(
label="skills/creating-skills/SKILL",
value="# creating skills",
limit=100,
description="Guide for creating effective skills.",
),
Block(
label="skills/creating-skills/references/workflows",
value="nested docs",
limit=100,
description="Nested workflow docs (should not appear)",
),
],
)
out = m.compile()
# Condensed top-level skill entries with descriptions.
assert "searching-messages/ (Search past messages to recall context.)" in out
assert "creating-skills/ (Guide for creating effective skills.)" in out
# Do not show SKILL.md or nested skill docs in tree.
assert "skills/searching-messages/SKILL.md" not in out
assert "skills/creating-skills/SKILL.md" not in out
assert "references/workflows" not in out