break wait loop when payment fails

tests/unit/test_tasks.py

@@ -0,0 +1,31 @@
+from types import SimpleNamespace
+
+import pytest
+
+from ... import tasks
+
+
+@pytest.mark.asyncio
+async def test_process_invoice_returns_payment_failed_on_failed_status(monkeypatch):
+    async def fake_tracked_spend_nwc(*args, **kwargs):
+        return True, "a" * 64
+
+    async def fake_check_transaction_status(wallet_id: str, payment_hash: str):
+        return SimpleNamespace(success=False, failed=True)
+
+    monkeypatch.setattr(tasks, "tracked_spend_nwc", fake_tracked_spend_nwc)
+    monkeypatch.setattr(
+        tasks, "check_transaction_status", fake_check_transaction_status
+    )
+
+    result = await tasks._process_invoice(
+        wallet_id="wallet123",
+        pubkey="a" * 64,
+        invoice="lnbc1example",
+        amount_msats=1000,
+        description="test",
+    )
+
+    assert result["error"]["code"] == "PAYMENT_FAILED"
+    assert result["error"]["message"] == "Payment failed."
+    assert result["in_budget"] is True