test: restructure tests (#2444)

unit, api, wallets
* only run test-api for migration

tests/unit/test_helpers_query.py

@@ -0,0 +1,21 @@
+import pytest
+
+from lnbits.helpers import (
+    insert_query,
+    update_query,
+)
+from tests.helpers import DbTestModel
+
+test = DbTestModel(id=1, name="test", value="yes")
+
+
+@pytest.mark.asyncio
+async def test_helpers_insert_query():
+    q = insert_query("test_helpers_query", test)
+    assert q == "INSERT INTO test_helpers_query (id, name, value) VALUES (?, ?, ?)"
+
+
+@pytest.mark.asyncio
+async def test_helpers_update_query():
+    q = update_query("test_helpers_query", test)
+    assert q == "UPDATE test_helpers_query SET id = ?, name = ?, value = ? WHERE id = ?"