Mega-merge 1: Test invoice creation with description hash (WIP) (#812)

* check for description hash

* remove unnecessary asserts for clarity

* assume that description_hash is a hash already

* no lock

* restore bolt11.py

* /api/v1/payments with hex of description

* comment

tests/core/views/test_api.py

@@ -1,8 +1,15 @@
 import pytest
 import pytest_asyncio
+
+import hashlib
+from binascii import hexlify
+
+from lnbits import bolt11
 from lnbits.core.crud import get_wallet
 from lnbits.core.views.api import api_payment
 
+from lnbits.core.views.api import api_payments_create_invoice, CreateInvoiceData
+
 from ...helpers import get_random_invoice_data
 
 # check if the client is working
@@ -179,3 +186,21 @@ async def test_api_payment_with_key(invoice, inkey_headers_from):
     assert type(response) == dict
     assert response["paid"] == True
     assert "details" in response
+
+
+# check POST /api/v1/payments: invoice creation with a description hash
+@pytest.mark.asyncio
+async def test_create_invoice_with_description_hash(client, inkey_headers_to):
+    data = await get_random_invoice_data()
+    descr_hash = hashlib.sha256("asdasdasd".encode("utf-8")).hexdigest()
+    data["description_hash"] = "asdasdasd".encode("utf-8").hex()
+
+    response = await client.post(
+        "/api/v1/payments", json=data, headers=inkey_headers_to
+    )
+    invoice = response.json()
+
+    invoice_bolt11 = bolt11.decode(invoice["payment_request"])
+    assert invoice_bolt11.description_hash == descr_hash
+    assert invoice_bolt11.description is None
+    return invoice