mirror of
https://github.com/Routstr/routstr-core.git
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645 lines
23 KiB
Python
645 lines
23 KiB
Python
"""Refund claim lifecycle against a real SQLite database.
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Covers the guarantees the ``refunds`` table exists to provide: one open claim
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per key, a persisted melt quote before the melt is dispatched, and a
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reconciler that never restores a balance whose payout may have settled.
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"""
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import time
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from typing import Any, Awaitable, Callable
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from unittest.mock import AsyncMock, patch
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import pytest
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from fastapi import HTTPException
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from sqlmodel import select
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from routstr import refund
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from routstr.balance import RefundRequest, refund_wallet_endpoint
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from routstr.core.db import ApiKey, AsyncSession, Refund
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from routstr.payment.lnurl import LNURLError, MeltOutcomeAmbiguousError
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KEY_HASH = "refundclaimkey"
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ADDRESS = "user@ln.example.com"
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BALANCE_MSATS = 5_000_000
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async def _seed_key(
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session: AsyncSession, *, balance: int = BALANCE_MSATS, address: str | None = None
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) -> ApiKey:
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key = ApiKey(hashed_key=KEY_HASH)
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key.balance = balance
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key.reserved_balance = 0
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key.refund_currency = "sat"
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key.refund_address = address
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key.total_spent = 0
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key.total_requests = 0
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session.add(key)
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await session.commit()
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await session.refresh(key)
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return key
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async def _load_key(session: AsyncSession) -> ApiKey:
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key = await session.get(ApiKey, KEY_HASH)
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assert key is not None
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await session.refresh(key)
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return key
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async def _load_refund(session: AsyncSession, refund_id: str) -> Refund:
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row = await session.get(Refund, refund_id)
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assert row is not None
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await session.refresh(row)
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return row
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async def _age_claim(session: AsyncSession, refund_id: str, seconds: int) -> None:
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row = await _load_refund(session, refund_id)
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row.claimed_at = int(time.time()) - seconds
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row.created_at = int(time.time()) - seconds
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row.updated_at = int(time.time()) - seconds
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session.add(row)
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await session.commit()
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@pytest.fixture
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def short_timeout() -> Any:
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with patch.object(refund.settings, "refund_claim_timeout_seconds", 300):
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yield
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# --- exclusivity -----------------------------------------------------------
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@pytest.mark.asyncio
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async def test_second_claim_on_open_key_is_rejected(
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integration_session: AsyncSession,
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) -> None:
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key = await _seed_key(integration_session)
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first = await refund.open_claim(
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integration_session, key, method="lightning", destination=ADDRESS
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)
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key = await _load_key(integration_session)
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assert key.balance == 0
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with pytest.raises(HTTPException) as exc_info:
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await refund.open_claim(
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integration_session, key, method="cashu", destination=None
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)
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detail = exc_info.value.detail
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assert exc_info.value.status_code == 409
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assert isinstance(detail, dict)
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assert detail["error"]["code"] == "refund_in_progress"
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rows = (await integration_session.exec(select(Refund))).all()
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assert [row.id for row in rows] == [first.id]
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assert (await _load_key(integration_session)).balance == 0
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@pytest.mark.asyncio
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async def test_claim_from_second_session_hits_the_index(
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integration_engine: Any, integration_session: AsyncSession
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) -> None:
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key = await _seed_key(integration_session)
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await refund.open_claim(
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integration_session, key, method="lightning", destination=ADDRESS
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)
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async with AsyncSession(integration_engine, expire_on_commit=False) as other:
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other_key = await _load_key(other)
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with pytest.raises(HTTPException) as exc_info:
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await refund.open_claim(
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other, other_key, method="lightning", destination=ADDRESS
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)
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assert exc_info.value.status_code == 409
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@pytest.mark.asyncio
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async def test_claim_rejects_stale_balance_snapshot(
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integration_session: AsyncSession,
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) -> None:
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key = await _seed_key(integration_session)
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integration_session.expunge(key) # a stale, detached snapshot
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key.balance = BALANCE_MSATS + 1
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with pytest.raises(HTTPException) as exc_info:
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await refund.open_claim(
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integration_session, key, method="cashu", destination=None
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)
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assert exc_info.value.status_code == 409
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assert (await integration_session.exec(select(Refund))).all() == []
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assert (await _load_key(integration_session)).balance == BALANCE_MSATS
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@pytest.mark.asyncio
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async def test_retry_after_failed_claim_pays_once(
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integration_session: AsyncSession,
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) -> None:
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key = await _seed_key(integration_session)
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first = await refund.open_claim(
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integration_session, key, method="lightning", destination=ADDRESS
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)
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assert await refund.release(integration_session, first)
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key = await _load_key(integration_session)
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assert key.balance == BALANCE_MSATS
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second = await refund.open_claim(
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integration_session, key, method="lightning", destination=ADDRESS
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)
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assert second.id != first.id
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assert (await _load_key(integration_session)).balance == 0
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@pytest.mark.asyncio
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async def test_release_after_settle_is_a_noop(
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integration_session: AsyncSession,
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) -> None:
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key = await _seed_key(integration_session)
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claim = await refund.open_claim(
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integration_session, key, method="lightning", destination=ADDRESS
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)
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assert await refund.settle(integration_session, claim, quote_id="q1")
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assert not await refund.release(integration_session, claim)
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assert (await _load_key(integration_session)).balance == 0
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row = await _load_refund(integration_session, claim.id)
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assert row.status == "paid"
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assert row.claimed_at is None
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# --- execute ---------------------------------------------------------------
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def _lnurl_stub(
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outcome: BaseException | None = None,
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) -> Callable[..., Awaitable[int]]:
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async def send(
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amount: int,
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unit: str,
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mint: str,
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address: str,
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*,
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on_melt_quote: Callable[[str], Awaitable[None]] | None = None,
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) -> int:
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if on_melt_quote is not None:
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await on_melt_quote("quote-123")
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if outcome is not None:
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raise outcome
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return amount
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return send
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@pytest.mark.asyncio
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async def test_execute_persists_quote_before_melt_and_settles(
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integration_session: AsyncSession, patched_db_engine: None
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) -> None:
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key = await _seed_key(integration_session)
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claim = await refund.open_claim(
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integration_session, key, method="lightning", destination=ADDRESS
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)
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seen: list[str | None] = []
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async def send(*args: Any, on_melt_quote: Any = None, **kwargs: Any) -> int:
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await on_melt_quote("quote-123")
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row = await _load_refund(integration_session, claim.id)
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seen.append(row.quote_id)
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return 5000
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with patch("routstr.refund.send_to_lnurl", send):
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body = await refund.execute(integration_session, claim)
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assert seen == ["quote-123"], "quote must be on disk before the melt runs"
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assert body["status"] == "paid"
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assert body["recipient"] == ADDRESS
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assert body["sats"] == "5000"
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row = await _load_refund(integration_session, claim.id)
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assert (row.status, row.quote_id, row.claimed_at) == ("paid", "quote-123", None)
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@pytest.mark.asyncio
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async def test_execute_ambiguous_holds_claim_with_quote(
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integration_session: AsyncSession, patched_db_engine: None
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) -> None:
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key = await _seed_key(integration_session)
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claim = await refund.open_claim(
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integration_session, key, method="lightning", destination=ADDRESS
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)
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with patch(
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"routstr.refund.send_to_lnurl", _lnurl_stub(MeltOutcomeAmbiguousError("?"))
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):
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with pytest.raises(HTTPException) as exc_info:
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await refund.execute(integration_session, claim)
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assert exc_info.value.status_code == 502
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row = await _load_refund(integration_session, claim.id)
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assert (row.status, row.quote_id, row.claimed_at) == (
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"ambiguous",
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"quote-123",
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None,
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)
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assert (await _load_key(integration_session)).balance == 0
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@pytest.mark.asyncio
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async def test_execute_clean_failure_restores_balance(
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integration_session: AsyncSession, patched_db_engine: None
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) -> None:
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key = await _seed_key(integration_session)
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claim = await refund.open_claim(
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integration_session, key, method="lightning", destination=ADDRESS
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)
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with patch("routstr.refund.send_to_lnurl", _lnurl_stub(LNURLError("limits"))):
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with pytest.raises(HTTPException) as exc_info:
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await refund.execute(integration_session, claim)
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assert exc_info.value.status_code == 500
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row = await _load_refund(integration_session, claim.id)
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assert row.status == "failed"
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assert (await _load_key(integration_session)).balance == BALANCE_MSATS
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@pytest.mark.asyncio
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async def test_execute_aborts_melt_when_claim_was_released(
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integration_engine: Any, integration_session: AsyncSession, patched_db_engine: None
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) -> None:
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"""A reconciler that released the claim first must stop the melt."""
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key = await _seed_key(integration_session)
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claim = await refund.open_claim(
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integration_session, key, method="lightning", destination=ADDRESS
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)
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melted = False
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async def send(*args: Any, on_melt_quote: Any = None, **kwargs: Any) -> int:
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nonlocal melted
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async with AsyncSession(integration_engine, expire_on_commit=False) as other:
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await refund.release(other, await _load_refund(other, claim.id))
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await on_melt_quote("quote-123")
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melted = True
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return 5000
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with patch("routstr.refund.send_to_lnurl", send):
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with pytest.raises(HTTPException):
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await refund.execute(integration_session, claim)
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assert melted is False
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assert (await _load_key(integration_session)).balance == BALANCE_MSATS
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# --- reconciler ------------------------------------------------------------
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async def _open_ambiguous(session: AsyncSession, quote_id: str | None) -> Refund:
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key = await _seed_key(session)
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claim = await refund.open_claim(
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session, key, method="lightning", destination=ADDRESS
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)
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await refund.hold(session, claim, quote_id)
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return claim
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@pytest.mark.asyncio
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@pytest.mark.parametrize(
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("mint_status", "expected_status", "expected_balance"),
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[
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("paid", "paid", 0),
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("unpaid", "failed", BALANCE_MSATS),
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("pending", "ambiguous", 0),
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("unknown", "ambiguous", 0),
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],
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)
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async def test_reconcile_ambiguous_claims(
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integration_session: AsyncSession,
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patched_db_engine: None,
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short_timeout: None,
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mint_status: str,
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expected_status: str,
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expected_balance: int,
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) -> None:
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claim = await _open_ambiguous(integration_session, "quote-123")
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await _age_claim(integration_session, claim.id, 600)
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with patch(
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"routstr.refund.check_bolt11_payment_status",
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AsyncMock(return_value=mint_status),
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) as check:
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await refund.reconcile_once()
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check.assert_awaited_once_with(claim.mint_url, "sat", "quote-123")
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row = await _load_refund(integration_session, claim.id)
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assert row.status == expected_status
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assert (await _load_key(integration_session)).balance == expected_balance
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@pytest.mark.asyncio
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async def test_reconcile_credits_balance_once_across_passes(
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integration_session: AsyncSession, patched_db_engine: None, short_timeout: None
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) -> None:
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claim = await _open_ambiguous(integration_session, "quote-123")
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await _age_claim(integration_session, claim.id, 600)
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with patch(
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"routstr.refund.check_bolt11_payment_status", AsyncMock(return_value="unpaid")
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):
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await refund.reconcile_once()
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await refund.reconcile_once()
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assert (await _load_key(integration_session)).balance == BALANCE_MSATS
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@pytest.mark.asyncio
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async def test_reconcile_waits_before_trusting_recent_unpaid(
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integration_session: AsyncSession, patched_db_engine: None, short_timeout: None
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) -> None:
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"""A just-dispatched melt can report unpaid before it turns pending, so an
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unpaid quote is only final once the claim has been quiet for a timeout."""
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claim = await _open_ambiguous(integration_session, "quote-123")
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with patch(
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"routstr.refund.check_bolt11_payment_status", AsyncMock(return_value="unpaid")
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):
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await refund.reconcile_once()
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row = await _load_refund(integration_session, claim.id)
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assert row.status == "ambiguous"
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assert (await _load_key(integration_session)).balance == 0
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await _age_claim(integration_session, claim.id, 600)
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with patch(
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"routstr.refund.check_bolt11_payment_status", AsyncMock(return_value="unpaid")
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):
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await refund.reconcile_once()
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row = await _load_refund(integration_session, claim.id)
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assert row.status == "failed"
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assert (await _load_key(integration_session)).balance == BALANCE_MSATS
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@pytest.mark.asyncio
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async def test_reconcile_keeps_claim_that_gained_quote_mid_pass(
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integration_session: AsyncSession, patched_db_engine: None, short_timeout: None
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) -> None:
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"""The payout records its quote between the reconciler's read and its
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release: the stale ``quote_id is None`` must not restore the balance."""
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key = await _seed_key(integration_session)
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claim = await refund.open_claim(
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integration_session, key, method="lightning", destination=ADDRESS
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)
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await _age_claim(integration_session, claim.id, 600)
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real_lease = refund._lease
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async def lease_then_quote(refund_id: str, now: int, cutoff: int) -> bool:
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leased = await real_lease(refund_id, now, cutoff)
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await refund.record_quote(claim, "late-quote")
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return leased
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with patch("routstr.refund._lease", lease_then_quote):
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await refund.reconcile_once()
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row = await _load_refund(integration_session, claim.id)
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assert row.status == "pending"
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assert row.quote_id == "late-quote"
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assert (await _load_key(integration_session)).balance == 0
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@pytest.mark.asyncio
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async def test_reconcile_leaves_fresh_pending_claim_alone(
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integration_session: AsyncSession, patched_db_engine: None, short_timeout: None
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) -> None:
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key = await _seed_key(integration_session)
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claim = await refund.open_claim(
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integration_session, key, method="lightning", destination=ADDRESS
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)
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with patch("routstr.refund.check_bolt11_payment_status", AsyncMock()) as check:
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await refund.reconcile_once()
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check.assert_not_awaited()
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row = await _load_refund(integration_session, claim.id)
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assert row.status == "pending"
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assert row.claimed_at is not None
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assert (await _load_key(integration_session)).balance == 0
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@pytest.mark.asyncio
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async def test_reconcile_releases_expired_claim_without_quote(
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integration_session: AsyncSession, patched_db_engine: None, short_timeout: None
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) -> None:
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"""No quote on disk means the mint was never asked to pay."""
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key = await _seed_key(integration_session)
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claim = await refund.open_claim(
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integration_session, key, method="lightning", destination=ADDRESS
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)
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await _age_claim(integration_session, claim.id, 600)
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with patch("routstr.refund.check_bolt11_payment_status", AsyncMock()) as check:
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await refund.reconcile_once()
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check.assert_not_awaited()
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assert (await _load_refund(integration_session, claim.id)).status == "failed"
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assert (await _load_key(integration_session)).balance == BALANCE_MSATS
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@pytest.mark.asyncio
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async def test_reconcile_queries_mint_for_crashed_claim_with_quote(
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integration_session: AsyncSession, patched_db_engine: None, short_timeout: None
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) -> None:
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"""Crash after the quote was persisted: the mint decides, not the timeout."""
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key = await _seed_key(integration_session)
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claim = await refund.open_claim(
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integration_session, key, method="lightning", destination=ADDRESS
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)
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await refund.record_quote(claim, "quote-crash")
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await _age_claim(integration_session, claim.id, 600)
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with patch(
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"routstr.refund.check_bolt11_payment_status", AsyncMock(return_value="paid")
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) as check:
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await refund.reconcile_once()
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check.assert_awaited_once_with(claim.mint_url, "sat", "quote-crash")
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assert (await _load_refund(integration_session, claim.id)).status == "paid"
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assert (await _load_key(integration_session)).balance == 0
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@pytest.mark.asyncio
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async def test_reconcile_marks_expired_cashu_claim_stuck(
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integration_session: AsyncSession, patched_db_engine: None, short_timeout: None
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) -> None:
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key = await _seed_key(integration_session)
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claim = await refund.open_claim(
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integration_session, key, method="cashu", destination=None
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)
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await _age_claim(integration_session, claim.id, 600)
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with patch("routstr.refund.logger") as log:
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await refund.reconcile_once()
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await refund.reconcile_once()
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assert log.critical.call_count == 1
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row = await _load_refund(integration_session, claim.id)
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assert (row.status, row.claimed_at) == ("stuck", None)
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assert (await _load_key(integration_session)).balance == 0
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# A stuck claim is closed, so the key is not permanently locked out.
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key = await _load_key(integration_session)
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key.balance = 1000
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integration_session.add(key)
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await integration_session.commit()
|
|
await refund.open_claim(integration_session, key, method="cashu", destination=None)
|
|
|
|
|
|
@pytest.mark.asyncio
|
|
async def test_reconcile_survives_one_failing_row(
|
|
integration_session: AsyncSession, patched_db_engine: None, short_timeout: None
|
|
) -> None:
|
|
claim = await _open_ambiguous(integration_session, "quote-123")
|
|
with patch(
|
|
"routstr.refund.check_bolt11_payment_status",
|
|
AsyncMock(side_effect=RuntimeError("mint down")),
|
|
):
|
|
await refund.reconcile_once()
|
|
row = await _load_refund(integration_session, claim.id)
|
|
assert row.status == "ambiguous"
|
|
assert row.claimed_at is not None, "lease is kept until the next pass"
|
|
|
|
|
|
# --- endpoint --------------------------------------------------------------
|
|
|
|
|
|
@pytest.mark.asyncio
|
|
async def test_endpoint_uses_requested_address_over_persisted(
|
|
integration_session: AsyncSession, patched_db_engine: None
|
|
) -> None:
|
|
await _seed_key(integration_session, address="stored@ln.example.com")
|
|
send = AsyncMock(side_effect=_lnurl_stub())
|
|
with (
|
|
patch("routstr.refund.get_lnurl_data", AsyncMock()) as resolve,
|
|
patch("routstr.refund.send_to_lnurl", send),
|
|
):
|
|
body = await refund_wallet_endpoint(
|
|
refund_request=RefundRequest(lightning_address=ADDRESS),
|
|
authorization=f"Bearer sk-{KEY_HASH}",
|
|
x_cashu=None,
|
|
session=integration_session,
|
|
)
|
|
resolve.assert_awaited_once_with(ADDRESS)
|
|
assert isinstance(body, dict)
|
|
assert body["recipient"] == ADDRESS
|
|
assert send.await_args is not None
|
|
assert send.await_args.args[3] == ADDRESS
|
|
assert (await _load_key(integration_session)).balance == 0
|
|
|
|
|
|
@pytest.mark.asyncio
|
|
async def test_endpoint_rejects_bad_address_without_debit(
|
|
integration_session: AsyncSession,
|
|
) -> None:
|
|
await _seed_key(integration_session)
|
|
with patch(
|
|
"routstr.refund.get_lnurl_data", AsyncMock(side_effect=LNURLError("nope"))
|
|
):
|
|
with pytest.raises(HTTPException) as exc_info:
|
|
await refund_wallet_endpoint(
|
|
refund_request=RefundRequest(lightning_address="bad@example"),
|
|
authorization=f"Bearer sk-{KEY_HASH}",
|
|
x_cashu=None,
|
|
session=integration_session,
|
|
)
|
|
assert exc_info.value.status_code == 400
|
|
assert (await integration_session.exec(select(Refund))).all() == []
|
|
assert (await _load_key(integration_session)).balance == BALANCE_MSATS
|
|
|
|
|
|
@pytest.mark.asyncio
|
|
async def test_endpoint_replays_paid_lightning_refund_on_empty_balance(
|
|
integration_session: AsyncSession, patched_db_engine: None
|
|
) -> None:
|
|
await _seed_key(integration_session, address=ADDRESS)
|
|
with patch("routstr.refund.send_to_lnurl", _lnurl_stub()):
|
|
first = await refund_wallet_endpoint(
|
|
authorization=f"Bearer sk-{KEY_HASH}",
|
|
x_cashu=None,
|
|
session=integration_session,
|
|
)
|
|
second = await refund_wallet_endpoint(
|
|
authorization=f"Bearer sk-{KEY_HASH}",
|
|
x_cashu=None,
|
|
session=integration_session,
|
|
)
|
|
assert isinstance(first, dict) and isinstance(second, dict)
|
|
assert second["refund_id"] == first["refund_id"]
|
|
assert second["status"] == "paid"
|
|
|
|
|
|
@pytest.mark.asyncio
|
|
async def test_endpoint_refund_while_ambiguous_returns_409(
|
|
integration_session: AsyncSession, patched_db_engine: None
|
|
) -> None:
|
|
await _open_ambiguous(integration_session, "quote-123")
|
|
key = await _load_key(integration_session)
|
|
key.balance = 2_000_000 # topped up while the melt is unresolved
|
|
integration_session.add(key)
|
|
await integration_session.commit()
|
|
|
|
send = AsyncMock()
|
|
with (
|
|
patch("routstr.refund.get_lnurl_data", AsyncMock()),
|
|
patch("routstr.refund.send_to_lnurl", send),
|
|
):
|
|
with pytest.raises(HTTPException) as exc_info:
|
|
await refund_wallet_endpoint(
|
|
refund_request=RefundRequest(lightning_address=ADDRESS),
|
|
authorization=f"Bearer sk-{KEY_HASH}",
|
|
x_cashu=None,
|
|
session=integration_session,
|
|
)
|
|
assert exc_info.value.status_code == 409
|
|
send.assert_not_awaited()
|
|
assert (await _load_key(integration_session)).balance == 2_000_000
|
|
|
|
|
|
@pytest.mark.asyncio
|
|
async def test_endpoint_zero_balance_with_open_claim_returns_409(
|
|
integration_session: AsyncSession, patched_db_engine: None
|
|
) -> None:
|
|
"""A prior refund debited the balance and is still settling: the retry must
|
|
report refund_in_progress (409), not "no balance to refund" (400)."""
|
|
await _open_ambiguous(integration_session, "quote-123")
|
|
assert (await _load_key(integration_session)).balance == 0
|
|
|
|
send = AsyncMock()
|
|
with (
|
|
patch("routstr.refund.get_lnurl_data", AsyncMock()),
|
|
patch("routstr.refund.send_to_lnurl", send),
|
|
):
|
|
with pytest.raises(HTTPException) as exc_info:
|
|
await refund_wallet_endpoint(
|
|
authorization=f"Bearer sk-{KEY_HASH}",
|
|
x_cashu=None,
|
|
session=integration_session,
|
|
)
|
|
assert exc_info.value.status_code == 409
|
|
assert isinstance(exc_info.value.detail, dict)
|
|
assert exc_info.value.detail["error"]["code"] == "refund_in_progress"
|
|
send.assert_not_awaited()
|
|
|
|
|
|
@pytest.mark.asyncio
|
|
async def test_cashu_token_survives_failed_ledger_write(
|
|
integration_session: AsyncSession, patched_db_engine: None
|
|
) -> None:
|
|
"""The token is issued once the mint signs it; a failed cashu_transactions
|
|
insert must neither fail the request nor release the balance, and a retry
|
|
must replay the token from the claim row."""
|
|
await _seed_key(integration_session)
|
|
with (
|
|
patch("routstr.refund.send_token", AsyncMock(return_value="cashuAtoken")),
|
|
patch("routstr.refund.token_mint_url", lambda token, mint: mint),
|
|
patch(
|
|
"routstr.refund.store_cashu_transaction",
|
|
AsyncMock(side_effect=RuntimeError("db down")),
|
|
),
|
|
):
|
|
first = await refund_wallet_endpoint(
|
|
authorization=f"Bearer sk-{KEY_HASH}",
|
|
x_cashu=None,
|
|
session=integration_session,
|
|
)
|
|
assert isinstance(first, dict)
|
|
assert (first["token"], first["status"]) == ("cashuAtoken", "paid")
|
|
assert (await _load_key(integration_session)).balance == 0
|
|
|
|
second = await refund_wallet_endpoint(
|
|
authorization=f"Bearer sk-{KEY_HASH}",
|
|
x_cashu=None,
|
|
session=integration_session,
|
|
)
|
|
assert isinstance(second, dict)
|
|
assert second["refund_id"] == first["refund_id"]
|
|
assert second["token"] == "cashuAtoken"
|