mx-challenge/src/rank/rank.controller.spec.ts

import { Test, TestingModule } from '@nestjs/testing';
import { JwtAuthGuard } from '../auth/jwt-auth.guard';
import { RankController } from './rank.controller';
import { RankService } from './rank.service';

describe('RankController', () => {
  let controller: RankController;

  const mockRankList = [];

  const mockRank = {
    id: `${Date.now()}`,
    points: 100,
    createdAt: Date.now(),
    updatedAt: Date.now(),
    userId: `${Date.now()}`,
  };

  mockRankList.push(mockRank);

  const mockRankService = {
    findRankList: jest.fn(() => mockRankList),
    findByUserLatest: jest.fn((_: string) => mockRank),
    findByUser: jest.fn((_: string) => mockRankList),
    create: jest.fn((pts: number) => ({
      ...mockRank,
      points: mockRank.points + pts
    })),
  };

  const mockGuard = {
    canActivate: jest.fn(() => true)
  };

  beforeEach(async () => {
    const module: TestingModule = await Test.createTestingModule({
      controllers: [RankController],
      providers: [RankService],
    }).overrideProvider(RankService)
      .useValue(mockRankService)
      .overrideGuard(JwtAuthGuard)
      .useValue(mockGuard)
      .compile();

    controller = module.get<RankController>(RankController);
  });

  it('should be defined', () => {
    expect(controller).toBeDefined();
  });

  it('should return rank list', () => {
    expect(controller.getRankList()).toEqual(mockRankList);
  });

  it('should get latest score of user', () => {
    expect(controller.getUserRank(mockRank.userId)).toEqual(mockRank);
  });

  it('should get user rank history', () => {
    expect(controller.getUserHistory(mockRank.userId)).toEqual(mockRankList);
  });

  it('should create new rank and add 20 points', () => {
    const req = {
      user: { id: mockRank.id },
    };
    expect(controller.add20Points(req)).toEqual({
      ...mockRank,
      points: 120,
    });
  });

  it('should create new rank and add 60 points', () => {
    const req = {
      user: { id: mockRank.id },
    };
    expect(controller.add60Points(req)).toEqual({
      ...mockRank,
      points: 160,
    });
  });

  it('should create new rank and add 100 points', () => {
    const req = {
      user: { id: mockRank.id },
    };
    expect(controller.add100Points(req)).toEqual({
      ...mockRank,
      points: 200,
    });
  });
});