Allow Nordigen parameter in Bank constructor

and remove Nordigen FK to Bank from Nordigen constructor. It is auto
generated upon DB insertion.

pfbudget/db/model.py

@@ -63,7 +63,7 @@ class Bank(Base, Export):
     BIC: Mapped[str] = mapped_column(String(8))
     type: Mapped[AccountType]
 
-    nordigen: Mapped[Optional[Nordigen]] = relationship(init=False, lazy="joined")
+    nordigen: Mapped[Optional[Nordigen]] = relationship(default=None, lazy="joined")
 
     @property
     def format(self) -> dict[str, Any]:
@@ -241,7 +241,7 @@ class Note(Base):
 class Nordigen(Base, Export):
     __tablename__ = "banks_nordigen"
 
-    name: Mapped[bankfk] = mapped_column(primary_key=True)
+    name: Mapped[bankfk] = mapped_column(primary_key=True, init=False)
     bank_id: Mapped[Optional[str]]
     requisition_id: Mapped[Optional[str]]
     invert: Mapped[Optional[bool]] = mapped_column(default=None)

tests/mocks/banks.py

@@ -1,4 +1,8 @@
-from pfbudget.db.model import AccountType, Bank
+from pfbudget.db.model import AccountType, Bank, Nordigen
 
 
-checking = Bank("bank", "BANK", AccountType.checking)
+checking = Bank(
+    "bank", "BANK", AccountType.checking, Nordigen("bank_id", "requisition_id")
+)
+
+cc = Bank("cc", "CC", AccountType.MASTERCARD)

tests/test_database.py

@@ -25,11 +25,15 @@ def client() -> Client:
 @pytest.fixture
 def banks(client: Client) -> list[Bank]:
     banks = [
-        Bank("bank", "BANK", AccountType.checking),
+        Bank("bank", "BANK", AccountType.checking, Nordigen(None, "req", None)),
         Bank("broker", "BROKER", AccountType.investment),
         Bank("creditcard", "CC", AccountType.MASTERCARD),
     ]
-    banks[0].nordigen = Nordigen("bank", None, "req", None)
+
+    # fix nordigen bank names which would be generated post DB insert
+    for bank in banks:
+        if bank.nordigen:
+            bank.nordigen.name = bank.name
 
     client.insert(banks)
     return banks
@@ -48,6 +52,8 @@ def transactions(client: Client) -> list[Transaction]:
     ]
 
     client.insert(transactions)
+
+    # fix ids which would be generated post DB insert
     for i, transaction in enumerate(transactions):
         transaction.id = i + 1
         if transaction.category:

tests/test_psd2.py

@@ -64,8 +64,7 @@ def extractor() -> Extractor:
 
 @pytest.fixture
 def bank() -> Bank:
-    bank = Bank("Bank#1", "", AccountType.checking)
+    bank = Bank("Bank#1", "", AccountType.checking, Nordigen("", mock.id, False))
-    bank.nordigen = Nordigen("", "", mock.id, False)
     return bank