first ruggedy draft

tests/test_projects.py

@@ -0,0 +1,70 @@
+from __future__ import annotations
+
+from datetime import date
+from decimal import Decimal
+
+from mousehold_api import models
+from mousehold_api.services.projects import calculate_project_summary
+from mousehold_domain import (
+    PaymentLineStatus,
+    PaymentStatus,
+    PlanningStatus,
+    ProjectStatus,
+    ReconciliationStatus,
+    SettlementStatus,
+)
+from sqlalchemy.orm import Session
+
+
+def test_project_partial_payment_summary(
+    session: Session,
+    household_setup: dict[str, str],
+) -> None:
+    project = models.Project(
+        household_id=household_setup["household_id"],
+        name="Stockholm 2026",
+        status=ProjectStatus.ACTIVE,
+        currency="EUR",
+    )
+    session.add(project)
+    session.flush()
+    budget_line = models.ProjectBudgetLine(
+        project_id=project.id,
+        name="Accommodation",
+        budgeted_amount=Decimal("800.00"),
+    )
+    session.add(budget_line)
+    session.flush()
+    item = models.ProjectPlannedItem(
+        project_id=project.id,
+        budget_line_id=budget_line.id,
+        description="Hotel",
+        estimated_amount=Decimal("800.00"),
+        committed_amount=Decimal("760.00"),
+        due_date=date(2026, 8, 12),
+        planning_status=PlanningStatus.COMMITTED,
+        payment_status=PaymentStatus.PARTIALLY_PAID,
+        reconciliation_status=ReconciliationStatus.EMAIL_SEEN,
+        settlement_status=SettlementStatus.UNSETTLED,
+    )
+    session.add(item)
+    session.flush()
+    session.add(
+        models.PaymentLine(
+            planned_item_id=item.id,
+            amount=Decimal("200.00"),
+            currency="EUR",
+            date=date(2026, 1, 5),
+            paid_by_user_id=household_setup["user_a_id"],
+            status=PaymentLineStatus.PAID,
+        )
+    )
+    session.commit()
+
+    summary = calculate_project_summary(session, project.id)
+
+    assert summary.budgeted_total == Decimal("800.00")
+    assert summary.committed_total == Decimal("760.00")
+    assert summary.paid_total == Decimal("200.00")
+    assert summary.due_later_total == Decimal("560.00")
+    assert summary.remaining_uncommitted_budget == Decimal("40.00")