add "debit_card" as a new AccountType (#16)

backend/tests/test_accounts.py

@@ -0,0 +1,34 @@
+"""Account-type behavior shared by the accounts API and financial summaries."""
+from datetime import date
+
+from httpx import AsyncClient
+
+from tests.helpers import money, txn_payload
+
+
+async def test_debit_card_is_a_liquid_account_type(client: AsyncClient, categories):
+    response = await client.post(
+        "/accounts",
+        json={"name": "Debit card", "type": "debit_card", "currency": "RUB"},
+    )
+
+    assert response.status_code == 201
+    debit_card = response.json()
+    assert debit_card["type"] == "debit_card"
+
+    transaction = await client.post(
+        "/transactions",
+        json=txn_payload(
+            debit_card["id"],
+            type="income",
+            amount="1000.00",
+            category_id=categories["Salary"]["id"],
+            date=date.today().isoformat(),
+        ),
+    )
+    assert transaction.status_code == 201
+
+    summary = await client.get("/net-worth/summary", params={"range": "all"})
+
+    assert summary.status_code == 200
+    assert money(summary.json()["current"]) == money("1000.00")