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_create_invoice.py

@@ -0,0 +1,46 @@
+import pytest
+from bolt11 import decode
+
+from lnbits.core.services import (
+    PaymentStatus,
+    create_invoice,
+)
+from lnbits.wallets import get_funding_source
+
+description = "test create invoice"
+
+
+@pytest.mark.asyncio
+async def test_create_invoice(from_wallet):
+    payment_hash, pr = await create_invoice(
+        wallet_id=from_wallet.id,
+        amount=1000,
+        memo=description,
+    )
+    invoice = decode(pr)
+    assert invoice.payment_hash == payment_hash
+    assert invoice.amount_msat == 1000000
+    assert invoice.description == description
+
+    funding_source = get_funding_source()
+    status = await funding_source.get_invoice_status(payment_hash)
+    assert isinstance(status, PaymentStatus)
+    assert status.pending
+
+
+@pytest.mark.asyncio
+async def test_create_internal_invoice(from_wallet):
+    payment_hash, pr = await create_invoice(
+        wallet_id=from_wallet.id, amount=1000, memo=description, internal=True
+    )
+    invoice = decode(pr)
+    assert invoice.payment_hash == payment_hash
+    assert invoice.amount_msat == 1000000
+    assert invoice.description == description
+
+    # Internal invoices are not on fundingsource. so we should get some kind of error
+    # that the invoice is not found, but we get status pending
+    funding_source = get_funding_source()
+    status = await funding_source.get_invoice_status(payment_hash)
+    assert isinstance(status, PaymentStatus)
+    assert status.pending