import { describe, it, expect, beforeEach } from 'vitest';
import { GetSponsorsPresenter } from './GetSponsorsPresenter';

describe('GetSponsorsPresenter', () => {
  let presenter: GetSponsorsPresenter;

  beforeEach(() => {
    presenter = new GetSponsorsPresenter();
  });

  describe('reset', () => {
    it('should reset the result to null', () => {
      const mockResult = { sponsors: [] };
      presenter.present(mockResult);
      expect(presenter.viewModel).toEqual(mockResult);

      presenter.reset();
      expect(() => presenter.viewModel).toThrow('Presenter not presented');
    });
  });

  describe('present', () => {
    it('should store the result', () => {
      const mockResult = {
        sponsors: [
          { id: 'sponsor-1', name: 'Sponsor One', contactEmail: 's1@example.com' },
          { id: 'sponsor-2', name: 'Sponsor Two', contactEmail: 's2@example.com' },
        ],
      };

      presenter.present(mockResult);

      expect(presenter.viewModel).toEqual(mockResult);
    });
  });

  describe('getViewModel', () => {
    it('should return null when not presented', () => {
      expect(presenter.getViewModel()).toBeNull();
    });

    it('should return the result when presented', () => {
      const mockResult = { sponsors: [] };
      presenter.present(mockResult);

      expect(presenter.getViewModel()).toEqual(mockResult);
    });
  });

  describe('viewModel', () => {
    it('should throw error when not presented', () => {
      expect(() => presenter.viewModel).toThrow('Presenter not presented');
    });

    it('should return the result when presented', () => {
      const mockResult = { sponsors: [] };
      presenter.present(mockResult);

      expect(presenter.viewModel).toEqual(mockResult);
    });
  });
});