feat(backend): Behandlungen-Modul (Modul 8)

TreatmentsModule mit Erfassung und Colony-Historie-Endpunkt fuer
Tierarzneimittel-Behandlungen.

ApiCore-Backend/src/treatments/treatments.service.spec.ts

@@ -0,0 +1,72 @@
+import { NotFoundException } from '@nestjs/common';
+import { TreatmentsService } from './treatments.service';
+import { PrismaService } from '../prisma/prisma.service';
+import { AuditLogService } from '../audit/audit-log.service';
+
+describe('TreatmentsService', () => {
+  let service: TreatmentsService;
+  let prisma: {
+    treatment: {
+      findMany: jest.Mock;
+      findUnique: jest.Mock;
+      create: jest.Mock;
+    };
+  };
+  let auditLog: { record: jest.Mock };
+
+  const treatment = {
+    id: 'treatment-1',
+    colonyId: 'colony-1',
+    date: new Date(),
+  };
+
+  beforeEach(() => {
+    prisma = {
+      treatment: {
+        findMany: jest.fn(),
+        findUnique: jest.fn(),
+        create: jest.fn(),
+      },
+    };
+    auditLog = { record: jest.fn() };
+    service = new TreatmentsService(
+      prisma as unknown as PrismaService,
+      auditLog as unknown as AuditLogService,
+    );
+  });
+
+  it('findById throws NotFoundException when missing', async () => {
+    prisma.treatment.findUnique.mockResolvedValue(null);
+    await expect(service.findById('missing')).rejects.toBeInstanceOf(
+      NotFoundException,
+    );
+  });
+
+  it('create stores the acting user and product', async () => {
+    prisma.treatment.create.mockResolvedValue(treatment);
+
+    await service.create(
+      { colonyId: 'colony-1', date: '2026-01-01', product: 'Ameisensäure' },
+      'user-1',
+    );
+
+    const [[createArg]] = prisma.treatment.create.mock.calls as [
+      [{ data: { colonyId: string; userId: string; product: string } }],
+    ];
+    expect(createArg.data.colonyId).toBe('colony-1');
+    expect(createArg.data.userId).toBe('user-1');
+    expect(createArg.data.product).toBe('Ameisensäure');
+  });
+
+  it('findByColony orders results chronologically', async () => {
+    prisma.treatment.findMany.mockResolvedValue([treatment]);
+
+    await service.findByColony('colony-1');
+
+    const [[queryArg]] = prisma.treatment.findMany.mock.calls as [
+      [{ where: { colonyId: string }; orderBy: { date: string } }],
+    ];
+    expect(queryArg.where.colonyId).toBe('colony-1');
+    expect(queryArg.orderBy.date).toBe('asc');
+  });
+});