mirror of
https://github.com/langchain-ai/langgraph.git
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321 lines
9.8 KiB
Python
321 lines
9.8 KiB
Python
import asyncio
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import pytest
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from langchain.schema.runnable import RunnablePassthrough
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from pytest_mock import MockerFixture
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from permchain import Pregel, channels
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from permchain.pregel import PregelInvoke
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async def test_invoke_single_process_in_out(mocker: MockerFixture) -> None:
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add_one = mocker.Mock(side_effect=lambda x: x + 1)
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chain = Pregel.subscribe_to("input") | add_one | Pregel.send_to("output")
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app = Pregel(
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(chain,),
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channels={
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"input": channels.LastValue(int),
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"output": channels.LastValue(int),
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},
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input="input",
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output="output",
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)
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assert await app.ainvoke(2) == 3
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async def test_invoke_two_processes_in_out(mocker: MockerFixture) -> None:
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add_one = mocker.Mock(side_effect=lambda x: x + 1)
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chain_one = Pregel.subscribe_to("input") | add_one | Pregel.send_to("inbox")
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chain_two = Pregel.subscribe_to_each("inbox") | add_one | Pregel.send_to("output")
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app = Pregel(
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[chain_one, chain_two],
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channels={
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"input": channels.LastValue(int),
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"output": channels.LastValue(int),
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"inbox": channels.Inbox(int),
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},
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input="input",
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output="output",
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)
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assert await app.ainvoke(2) == 4
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async def test_batch_two_processes_in_out() -> None:
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async def add_one_with_delay(inp: int) -> int:
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await asyncio.sleep(inp / 10)
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return inp + 1
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chain_one = (
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Pregel.subscribe_to("input") | add_one_with_delay | Pregel.send_to("one")
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)
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chain_two = (
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Pregel.subscribe_to("one") | add_one_with_delay | Pregel.send_to("output")
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)
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app = Pregel(
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chain_one,
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chain_two,
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channels={
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"input": channels.LastValue(int),
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"output": channels.LastValue(int),
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"one": channels.LastValue(int),
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},
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input="input",
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output="output",
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)
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assert await app.abatch([3, 2, 1, 3, 5]) == [5, 4, 3, 5, 7]
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async def test_invoke_many_processes_in_out(mocker: MockerFixture) -> None:
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test_size = 100
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add_one = mocker.Mock(side_effect=lambda x: x + 1)
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chans = {
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"input": channels.LastValue(int),
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"output": channels.LastValue(int),
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"-1": channels.LastValue(int),
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}
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chains: list[PregelInvoke] = [
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Pregel.subscribe_to("input") | add_one | Pregel.send_to("-1")
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]
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for i in range(test_size - 2):
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chans[str(i)] = channels.LastValue(int)
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chains.append(
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Pregel.subscribe_to(str(i - 1)) | add_one | Pregel.send_to(str(i))
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)
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chains.append(Pregel.subscribe_to(str(i)) | add_one | Pregel.send_to("output"))
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app = Pregel(*chains, channels=chans, input="input", output="output")
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# No state is left over from previous invocations
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for _ in range(10):
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assert await app.ainvoke(2, {"recursion_limit": test_size}) == 2 + test_size
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# Concurrent invocations do not interfere with each other
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assert await asyncio.gather(
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*(app.ainvoke(2, {"recursion_limit": test_size}) for _ in range(10))
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) == [2 + test_size for _ in range(10)]
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async def test_batch_many_processes_in_out(mocker: MockerFixture) -> None:
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test_size = 100
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add_one = mocker.Mock(side_effect=lambda x: x + 1)
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chans = {
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"input": channels.LastValue(int),
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"output": channels.LastValue(int),
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"-1": channels.LastValue(int),
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}
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chains: list[PregelInvoke] = [
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Pregel.subscribe_to("input") | add_one | Pregel.send_to("-1")
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]
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for i in range(test_size - 2):
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chans[str(i)] = channels.LastValue(int)
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chains.append(
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Pregel.subscribe_to(str(i - 1)) | add_one | Pregel.send_to(str(i))
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)
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chains.append(Pregel.subscribe_to(str(i)) | add_one | Pregel.send_to("output"))
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app = Pregel(*chains, channels=chans, input="input", output="output")
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# No state is left over from previous invocations
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for _ in range(10):
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# Then invoke pubsub
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assert await app.abatch([2, 1, 3, 4, 5], {"recursion_limit": test_size}) == [
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2 + test_size,
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1 + test_size,
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3 + test_size,
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4 + test_size,
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5 + test_size,
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]
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# Concurrent invocations do not interfere with each other
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assert await asyncio.gather(
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*(
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app.abatch([2, 1, 3, 4, 5], {"recursion_limit": test_size})
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for _ in range(10)
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)
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) == [
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[2 + test_size, 1 + test_size, 3 + test_size, 4 + test_size, 5 + test_size]
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for _ in range(10)
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]
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async def test_invoke_two_processes_two_in_two_out_invalid(
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mocker: MockerFixture,
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) -> None:
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add_one = mocker.Mock(side_effect=lambda x: x + 1)
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chain_one = Pregel.subscribe_to("input") | add_one | Pregel.send_to("output")
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chain_two = Pregel.subscribe_to("input") | add_one | Pregel.send_to("output")
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app = Pregel(
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chain_one,
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chain_two,
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channels={
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"input": channels.LastValue(int),
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"output": channels.LastValue(int),
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},
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input="input",
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output="output",
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)
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with pytest.raises(channels.InvalidUpdateError):
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# LastValue channels can only be updated once per iteration
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await app.ainvoke(2)
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async def test_invoke_two_processes_two_in_two_out_valid(mocker: MockerFixture) -> None:
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add_one = mocker.Mock(side_effect=lambda x: x + 1)
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chain_one = Pregel.subscribe_to("input") | add_one | Pregel.send_to("output")
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chain_two = Pregel.subscribe_to("input") | add_one | Pregel.send_to("output")
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app = Pregel(
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chain_one,
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chain_two,
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channels={
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"input": channels.LastValue(int),
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"output": channels.Inbox(int),
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},
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input="input",
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output="output",
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)
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# An Inbox channel accumulates updates into a sequence
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assert await app.ainvoke(2) == (3, 3)
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async def test_invoke_two_processes_two_in_join_two_out(mocker: MockerFixture) -> None:
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add_one = mocker.Mock(side_effect=lambda x: x + 1)
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add_10_each = mocker.Mock(side_effect=lambda x: sorted(y + 10 for y in x))
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chain_one = Pregel.subscribe_to("input") | add_one | Pregel.send_to("inbox")
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chain_three = Pregel.subscribe_to("input") | add_one | Pregel.send_to("inbox")
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chain_four = Pregel.subscribe_to("inbox") | add_10_each | Pregel.send_to("output")
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app = Pregel(
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chain_one,
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chain_three,
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chain_four,
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channels={
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"input": channels.LastValue(int),
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"output": channels.LastValue(int),
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"inbox": channels.Inbox(int),
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},
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input="input",
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output="output",
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)
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# Then invoke app
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# We get a single array result as chain_four waits for all publishers to finish
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# before operating on all elements published to topic_two as an array
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for _ in range(100):
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assert await app.ainvoke(2) == [13, 13]
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assert await asyncio.gather(*(app.ainvoke(2) for _ in range(100))) == [
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[13, 13] for _ in range(100)
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]
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async def test_invoke_join_then_call_other_pubsub(mocker: MockerFixture) -> None:
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add_one = mocker.Mock(side_effect=lambda x: x + 1)
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add_10_each = mocker.Mock(side_effect=lambda x: [y + 10 for y in x])
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inner_app = Pregel(
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Pregel.subscribe_to("input") | add_one | Pregel.send_to("output"),
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channels={
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"input": channels.LastValue(int),
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"output": channels.LastValue(int),
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},
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input="input",
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output="output",
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)
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chain_one = (
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Pregel.subscribe_to("input") | add_10_each | Pregel.send_to("inbox_one").map()
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)
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chain_two = (
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Pregel.subscribe_to("inbox_one")
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| inner_app.map()
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| sorted
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| Pregel.send_to("outbox_one")
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)
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chain_three = Pregel.subscribe_to("outbox_one") | sum | Pregel.send_to("output")
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app = Pregel(
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chain_one,
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chain_two,
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chain_three,
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channels={
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"input": channels.LastValue(int),
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"output": channels.LastValue(int),
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"inbox_one": channels.Inbox(int),
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"outbox_one": channels.LastValue(int),
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},
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input="input",
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output="output",
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)
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# Then invoke pubsub
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for _ in range(10):
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assert await app.ainvoke([2, 3]) == 27
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assert await asyncio.gather(*(app.ainvoke([2, 3]) for _ in range(10))) == [
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27 for _ in range(10)
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]
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async def test_invoke_two_processes_one_in_two_out(mocker: MockerFixture) -> None:
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add_one = mocker.Mock(side_effect=lambda x: x + 1)
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chain_one = (
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Pregel.subscribe_to("input")
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| add_one
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| Pregel.send_to(output=RunnablePassthrough(), between=RunnablePassthrough())
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)
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chain_two = Pregel.subscribe_to("between") | add_one | Pregel.send_to("output")
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app = Pregel(
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chain_one,
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chain_two,
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channels={
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"input": channels.LastValue(int),
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"output": channels.LastValue(int),
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"between": channels.LastValue(int),
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},
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input="input",
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output="output",
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)
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# Then invoke pubsub
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assert [c async for c in app.astream(2)] == [3, 4]
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async def test_invoke_two_processes_no_out(mocker: MockerFixture) -> None:
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add_one = mocker.Mock(side_effect=lambda x: x + 1)
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chain_one = Pregel.subscribe_to("input") | add_one | Pregel.send_to("between")
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chain_two = Pregel.subscribe_to("between") | add_one
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app = Pregel(
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chain_one,
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chain_two,
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channels={
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"input": channels.LastValue(int),
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"output": channels.LastValue(int),
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"between": channels.LastValue(int),
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},
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input="input",
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output="output",
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)
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# Then invoke pubsub
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# It finishes executing (once no more messages being published)
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# but returns nothing, as nothing was published to OUT topic
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assert await app.ainvoke(2) is None
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