Model/tests/orchestration/fakes.py
2026-06-05 12:18:13 +00:00

134 lines
4.5 KiB
Python

"""In-memory fakes for orchestrator unit tests (no DB, no network).
A `FakeUnitOfWork` exposes dict-backed fake repos and records commits, so a
test can drive an orchestrator and then assert what was persisted and that the
batch committed exactly once (ADR-0012)."""
from __future__ import annotations
from types import TracebackType
from typing import Any, Optional
from datatypes.epc.domain.epc_property_data import EpcPropertyData
from domain.property_baseline.property_baseline_performance import PropertyBaselinePerformance
from domain.property.properties import Properties
from domain.property.property import Property
from repositories.property_baseline.property_baseline_repository import PropertyBaselineRepository
from repositories.epc.epc_repository import EpcRepository
from repositories.property.property_repository import (
PropertyIdentityInsert,
PropertyRepository,
)
from repositories.solar.solar_repository import SolarRepository
from repositories.unit_of_work import UnitOfWork
class FakePropertyRepo(PropertyRepository):
def __init__(self, by_id: dict[int, Property]) -> None:
self._by_id = by_id
def get(self, property_id: int) -> Property:
return self._by_id[property_id]
def get_many(self, property_ids: list[int]) -> Properties:
return Properties([self._by_id[property_id] for property_id in property_ids])
def insert_all(self, rows: list[PropertyIdentityInsert]) -> int:
self.inserted: list[PropertyIdentityInsert] = list(rows)
return len(rows)
def ids_by_uprn(self, portfolio_id: int, uprns: list[int]) -> dict[int, int]:
# Not exercised by the baseline/EPC orchestrator tests that use this fake.
return {}
class FakeEpcRepo(EpcRepository):
def __init__(self, by_property: Optional[dict[int, EpcPropertyData]] = None) -> None:
self.saved: list[tuple[EpcPropertyData, Optional[int]]] = []
self._by_property = by_property or {}
def save(
self,
data: EpcPropertyData,
property_id: Optional[int] = None,
portfolio_id: Optional[int] = None,
) -> int:
self.saved.append((data, property_id))
if property_id is not None:
self._by_property[property_id] = data
return len(self.saved)
def get(self, epc_property_id: int) -> EpcPropertyData: # pragma: no cover
raise NotImplementedError
def get_for_property(self, property_id: int) -> Optional[EpcPropertyData]:
return self._by_property.get(property_id)
def get_for_properties(
self, property_ids: list[int]
) -> dict[int, EpcPropertyData]:
return {
property_id: self._by_property[property_id]
for property_id in property_ids
if property_id in self._by_property
}
class FakeSolarRepo(SolarRepository):
def __init__(self) -> None:
self.saved: list[tuple[int, dict[str, Any]]] = []
def save(self, property_id: int, insights: dict[str, Any]) -> None:
self.saved.append((property_id, insights))
def get(self, property_id: int) -> Optional[dict[str, Any]]: # pragma: no cover
raise NotImplementedError
class FakePropertyBaselineRepo(PropertyBaselineRepository):
def __init__(self) -> None:
self.saved: list[tuple[PropertyBaselinePerformance, int]] = []
def save(self, baseline: PropertyBaselinePerformance, property_id: int) -> int:
self.saved.append((baseline, property_id))
return len(self.saved)
def get_for_property(
self, property_id: int
) -> Optional[PropertyBaselinePerformance]: # pragma: no cover
raise NotImplementedError
class FakeUnitOfWork(UnitOfWork):
"""A unit that holds in-memory repos and counts commits."""
def __init__(
self,
*,
property: FakePropertyRepo,
epc: Optional[FakeEpcRepo] = None,
solar: Optional[FakeSolarRepo] = None,
property_baseline: Optional[FakePropertyBaselineRepo] = None,
) -> None:
self.property = property
self.epc = epc or FakeEpcRepo()
self.solar = solar or FakeSolarRepo()
self.property_baseline = property_baseline or FakePropertyBaselineRepo()
self.commits = 0
def __enter__(self) -> "FakeUnitOfWork":
return self
def __exit__(
self,
exc_type: Optional[type[BaseException]],
exc: Optional[BaseException],
tb: Optional[TracebackType],
) -> None:
return None
def commit(self) -> None:
self.commits += 1
def rollback(self) -> None:
return None