fairnesscoop / permacoop

import {mock, instance, when, verify, anything} from 'ts-mockito';

import {FileRepository} from 'src/Infrastructure/File/Repository/FileRepository';

import {LocalFileStorageAdapter} from 'src/Infrastructure/Adapter/LocalFileStorageAdapter';

import {File} from 'src/Domain/File/File.entity';

import {DownloadFileQueryHandler} from './DownloadFileQueryHandler';

import {DownloadFileQuery} from './DownloadFileQuery';

import {DownloadedFileView} from '../View/DownloadedFileView';

import {FileNotFoundException} from 'src/Domain/File/Exception/FileNotFoundException';

describe('DownloadFileCommandHandler', () => {

  let handler: DownloadFileQueryHandler;

  let localFileStorageAdapter: LocalFileStorageAdapter;

  let fileRepository: FileRepository;

  beforeEach(() => {

    localFileStorageAdapter = mock(LocalFileStorageAdapter);

    fileRepository = mock(FileRepository);

    handler = new DownloadFileQueryHandler(

      instance(fileRepository),

      instance(localFileStorageAdapter)

    );

  });

  it('testDownloadFile', async () => {

    const buffer = mock(Buffer);

    const file = mock(File);

    when(file.getOriginalName()).thenReturn('file_mathieu_marchois.pdf');

    when(file.getMimeType()).thenReturn('application/pdf');

    when(

      fileRepository.findOneById('cfdd06eb-cd71-44b9-82c6-46110b30ce05')

    ).thenResolve(instance(file));

    when(localFileStorageAdapter.download(instance(file))).thenResolve(

      instance(buffer)

    );

    expect(

      await handler.execute(

        new DownloadFileQuery('cfdd06eb-cd71-44b9-82c6-46110b30ce05')

      )

    ).toMatchObject(

      new DownloadedFileView(

        'file_mathieu_marchois.pdf',

        'application/pdf',

        instance(buffer)

      )

    );

    verify(

      fileRepository.findOneById('cfdd06eb-cd71-44b9-82c6-46110b30ce05')

    ).once();

    verify(localFileStorageAdapter.download(instance(file))).once();

  });

  it('testFileNotFound', async () => {

    when(

      fileRepository.findOneById('cfdd06eb-cd71-44b9-82c6-46110b30ce05')

    ).thenResolve(null);

    try {

      await handler.execute(

        new DownloadFileQuery('cfdd06eb-cd71-44b9-82c6-46110b30ce05')

      );

    } catch (e) {

      expect(e).toBeInstanceOf(FileNotFoundException);

      expect(e.message).toBe('file.errors.not_found');

      verify(

        fileRepository.findOneById('cfdd06eb-cd71-44b9-82c6-46110b30ce05')

      ).once();

      verify(localFileStorageAdapter.download(anything())).never();

    }

  });

});