Unit tests for FastAPI branch

Run via `make test`

tests/core/test_views.py

@@ -1,6 +0,0 @@
-import pytest
-
-
-async def test_homepage(client):
-    r = await client.get("/")
-    assert b"Add a new wallet" in await r.get_data()

tests/core/views/test_generic.py

@@ -0,0 +1,7 @@
+import pytest
+from tests.conftest import client
+
+@pytest.mark.asyncio
+async def test_core_views_generic(client):
+    response = await client.get("/")
+    assert response.status_code == 200