last_date_to_pay field can be none (#159)

Co-authored-by: Guy Khmelnitsky <[email protected]>

Author: SL1994-design

Diff for: iec_api/models/electric_bill.py

@@ -1,6 +1,7 @@
 """Electric Bills."""
 
 from dataclasses import dataclass, field
+from typing import Optional
 
 from mashumaro import DataClassDictMixin, field_options
 from mashumaro.codecs import BasicDecoder
@@ -47,8 +48,8 @@
 class ElectricBill(DataClassDictMixin):
     total_amount_to_pay: float = field(metadata=field_options(alias="totalAmountToPay"))
     total_invoices_to_pay: int = field(metadata=field_options(alias="totalInvoicesToPay"))
-    last_date_to_pay: str = field(metadata=field_options(alias="lastDateToPay"))
     invoices: list[Invoice]
+    last_date_to_pay: Optional[str] = field(metadata=field_options(alias="lastDateToPay"), default=None)
 
 
 decoder = BasicDecoder(ResponseWithDescriptor[ElectricBill])

Diff for: iec_api/models/response_descriptor.py

@@ -12,7 +12,7 @@ class ResponseDescriptor(DataClassDictMixin):
 
     is_success: bool = field(metadata=field_options(alias="isSuccess"))
     code: Optional[str]
-    description: Optional[str]
+    description: Optional[str] = None
 
 
 @dataclass
@@ -34,5 +34,5 @@ class ErrorResponseDescriptor(DataClassDictMixin):
 class ResponseWithDescriptor(Generic[T], DataClassDictMixin):
     """Response With Descriptor"""
 
-    data: Optional[T]
     response_descriptor: ResponseDescriptor = field(metadata=field_options(alias=RESPONSE_DESCRIPTOR_FIELD))
+    data: Optional[T] = None