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105 lines
3.8 KiB
Python
105 lines
3.8 KiB
Python
import pytest
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from langchain_core.runnables import RunnableConfig
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from langgraph.channels.manager import create_checkpoint
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from langgraph.checkpoint.base import Checkpoint, CheckpointMetadata, empty_checkpoint
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from langgraph.checkpoint.memory import MemorySaver
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class TestMemorySaver:
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@pytest.fixture(autouse=True)
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def setup(self):
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self.memory_saver = MemorySaver()
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# objects for test setup
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self.config_1: RunnableConfig = {
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"configurable": {"thread_id": "thread-1", "thread_ts": "1"}
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}
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self.config_2: RunnableConfig = {
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"configurable": {"thread_id": "thread-2", "thread_ts": "2"}
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}
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self.chkpnt_1: Checkpoint = empty_checkpoint()
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self.chkpnt_2: Checkpoint = create_checkpoint(self.chkpnt_1, {}, 1)
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self.metadata_1: CheckpointMetadata = {
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"source": "input",
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"step": 2,
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"writes": {},
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"score": 1,
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}
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self.metadata_2: CheckpointMetadata = {
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"source": "loop",
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"step": 1,
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"writes": {"foo": "bar"},
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"score": None,
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}
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async def test_search(self):
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# set up test
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# save checkpoints
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self.memory_saver.put(self.config_1, self.chkpnt_1, self.metadata_1)
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self.memory_saver.put(self.config_2, self.chkpnt_2, self.metadata_2)
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# call method / assertions
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query_1: CheckpointMetadata = {"source": "input"} # search by 1 key
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query_2: CheckpointMetadata = {
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"step": 1,
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"writes": {"foo": "bar"},
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} # search by multiple keys
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query_3: CheckpointMetadata = {} # search by no keys, return all checkpoints
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query_4: CheckpointMetadata = {"source": "update", "step": 1} # no match
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search_results_1 = list(self.memory_saver.list(None, filter=query_1))
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assert len(search_results_1) == 1
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assert search_results_1[0].metadata == self.metadata_1
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search_results_2 = list(self.memory_saver.list(None, filter=query_2))
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assert len(search_results_2) == 1
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assert search_results_2[0].metadata == self.metadata_2
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search_results_3 = list(self.memory_saver.list(None, filter=query_3))
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assert len(search_results_3) == 2
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search_results_4 = list(self.memory_saver.list(None, filter=query_4))
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assert len(search_results_4) == 0
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# TODO: test before and limit params
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async def test_asearch(self):
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# set up test
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# save checkpoints
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self.memory_saver.put(self.config_1, self.chkpnt_1, self.metadata_1)
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self.memory_saver.put(self.config_2, self.chkpnt_2, self.metadata_2)
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# call method / assertions
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query_1: CheckpointMetadata = {"source": "input"} # search by 1 key
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query_2: CheckpointMetadata = {
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"step": 1,
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"writes": {"foo": "bar"},
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} # search by multiple keys
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query_3: CheckpointMetadata = {} # search by no keys, return all checkpoints
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query_4: CheckpointMetadata = {"source": "update", "step": 1} # no match
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search_results_1 = [
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c async for c in self.memory_saver.alist(None, filter=query_1)
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]
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assert len(search_results_1) == 1
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assert search_results_1[0].metadata == self.metadata_1
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search_results_2 = [
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c async for c in self.memory_saver.alist(None, filter=query_2)
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]
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assert len(search_results_2) == 1
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assert search_results_2[0].metadata == self.metadata_2
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search_results_3 = [
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c async for c in self.memory_saver.alist(None, filter=query_3)
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]
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assert len(search_results_3) == 2
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search_results_4 = [
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c async for c in self.memory_saver.alist(None, filter=query_4)
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]
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assert len(search_results_4) == 0
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