Inventory_backend/test/app.e2e-spec.ts

import { Test, TestingModule } from '@nestjs/testing';
import { INestApplication } from '@nestjs/common';
import * as request from 'supertest';
import { App } from 'supertest/types';
import { AppModule } from './../src/app.module';
import { PrismaService } from '../src/prisma/prisma.service';

describe('AppController (e2e)', () => {
  let app: INestApplication<App>;
  let prisma: PrismaService;


  function createMockPrismaService() {
    return {
      composant: {
        create: jest.fn(),
        findUnique: jest.fn(),
      },
      piece: {
        create: jest.fn(),
      },
      machine: {
        findUnique: jest.fn(),
      },
      profile: {
        count: jest.fn().mockResolvedValue(0),
        create: jest.fn().mockResolvedValue({ id: 'profile-1' }),
      },
      onModuleInit: jest.fn(),
      onModuleDestroy: jest.fn(),
    };
  }

  let prisma: ReturnType<typeof createMockPrismaService>;

  beforeEach(async () => {
    prisma = createMockPrismaService();


    const moduleFixture: TestingModule = await Test.createTestingModule({
      imports: [AppModule],
    })
      .overrideProvider(PrismaService)
      .useValue(prisma)
      .compile();

    app = moduleFixture.createNestApplication();
    await app.init();

    prisma = app.get(PrismaService);
  });

  afterAll(async () => {
    await app.close();
  });

  beforeEach(async () => {
    await prisma.$executeRawUnsafe(
      'TRUNCATE TABLE custom_field_values, documents, pieces, composants, machines, composant_models, piece_models, type_machine_component_requirements, type_machine_piece_requirements, custom_fields, type_machines, type_composants, type_pieces, constructeurs, sites RESTART IDENTITY CASCADE',
    );
  });

  afterEach(async () => {
    await app.close();
  });

  it('/ (GET)', () => {
    return request(app.getHttpServer())
      .get('/')
      .expect(200)
      .expect('Hello World!');
  });

  describe('POST /composants', () => {
    it('accepts creation when requirement matches the machine skeleton', async () => {
      prisma.machine.findUnique.mockResolvedValue({
        id: 'machine-1',
        typeMachine: {
          componentRequirements: [
            { id: 'req-1', typeComposantId: 'type-comp-1' },
          ],
        },
      });

      const created = { id: 'component-1' };
      prisma.composant.create.mockResolvedValue(created);

      const response = await request(app.getHttpServer())
        .post('/composants')
        .send({
          name: 'Comp A',
          machineId: 'machine-1',
          typeComposantId: 'type-comp-1',
          typeMachineComponentRequirementId: 'req-1',
        })
        .expect(201);

      expect(response.body).toEqual(created);
      expect(prisma.composant.create).toHaveBeenCalled();
    });

    it('refuses creation when requirement is not part of the machine skeleton', async () => {
      prisma.machine.findUnique.mockResolvedValue({
        id: 'machine-1',
        typeMachine: {
          componentRequirements: [
            { id: 'req-1', typeComposantId: 'type-comp-1' },
          ],
        },
      });

      await request(app.getHttpServer())
        .post('/composants')
        .send({
          name: 'Comp A',
          machineId: 'machine-1',
          typeComposantId: 'type-comp-1',
          typeMachineComponentRequirementId: 'req-2',
        })
        .expect(400);

      expect(prisma.composant.create).not.toHaveBeenCalled();
    });
  });

  describe('POST /pieces', () => {
    it('accepts creation when requirement matches the machine skeleton', async () => {
      prisma.machine.findUnique.mockResolvedValue({
        id: 'machine-1',
        typeMachine: {
          pieceRequirements: [
            { id: 'req-1', typePieceId: 'type-piece-1' },
          ],
        },
      });

      const created = { id: 'piece-1' };
      prisma.piece.create.mockResolvedValue(created);

      const response = await request(app.getHttpServer())
        .post('/pieces')
        .send({
          name: 'Piece A',
          machineId: 'machine-1',
          typePieceId: 'type-piece-1',
          typeMachinePieceRequirementId: 'req-1',
        })
        .expect(201);

      expect(response.body).toEqual(created);
      expect(prisma.piece.create).toHaveBeenCalled();
    });

    it('refuses creation when requirement is not part of the machine skeleton', async () => {
      prisma.machine.findUnique.mockResolvedValue({
        id: 'machine-1',
        typeMachine: {
          pieceRequirements: [
            { id: 'req-1', typePieceId: 'type-piece-1' },
          ],
        },
      });

      await request(app.getHttpServer())
        .post('/pieces')
        .send({
          name: 'Piece A',
          machineId: 'machine-1',
          typePieceId: 'type-piece-1',
          typeMachinePieceRequirementId: 'req-2',
        })
        .expect(400);

      expect(prisma.piece.create).not.toHaveBeenCalled();

    });
  });
});