test: services create and pay invoice (#2452)

* test: services create and pay invoice
* add more tests
* check with fundingsource
* check status

tests/regtest/test_services_pay_invoice.py

@@ -0,0 +1,45 @@
+import pytest
+
+from lnbits.core.crud import (
+    get_standalone_payment,
+)
+from lnbits.core.services import (
+    PaymentError,
+    pay_invoice,
+)
+
+description = "test pay invoice"
+
+
+@pytest.mark.asyncio
+async def test_services_pay_invoice(to_wallet, real_invoice):
+    payment_hash = await pay_invoice(
+        wallet_id=to_wallet.id,
+        payment_request=real_invoice.get("bolt11"),
+        description=description,
+    )
+    assert payment_hash
+    payment = await get_standalone_payment(payment_hash)
+    assert payment
+    assert not payment.pending
+    assert payment.memo == description
+
+
+@pytest.mark.asyncio
+async def test_services_pay_invoice_invalid_bolt11(to_wallet):
+    with pytest.raises(PaymentError):
+        await pay_invoice(
+            wallet_id=to_wallet.id,
+            payment_request="lnbcr1123123n",
+        )
+
+
+@pytest.mark.asyncio
+async def test_services_pay_invoice_0_amount_invoice(
+    to_wallet, real_amountless_invoice
+):
+    with pytest.raises(PaymentError):
+        await pay_invoice(
+            wallet_id=to_wallet.id,
+            payment_request=real_amountless_invoice,
+        )