vercel/packages/cli/test/unit/commands/link.test.ts

import { basename, join } from 'path';
import { readJSON } from 'fs-extra';
import link from '../../../src/commands/link';
import { client } from '../../mocks/client';
import { useUser } from '../../mocks/user';
import { useTeams } from '../../mocks/team';
import {
  defaultProject,
  useProject,
  useUnknownProject,
} from '../../mocks/project';
import { setupTmpDir } from '../../helpers/setup-unit-fixture';

describe('link', () => {
  it('should prompt for link', async () => {
    const user = useUser();
    const cwd = setupTmpDir();
    useTeams('team_dummy');
    const { project } = useProject({
      ...defaultProject,
      id: basename(cwd),
      name: basename(cwd),
    });
    useUnknownProject();

    client.cwd = cwd;
    const exitCodePromise = link(client);

    await expect(client.stderr).toOutput('Set up');
    client.stdin.write('y\n');

    await expect(client.stderr).toOutput(
      'Which scope should contain your project?'
    );
    client.stdin.write('y\n');

    await expect(client.stderr).toOutput('Link to it?');
    client.stdin.write('y\n');

    await expect(client.stderr).toOutput(
      `Linked to ${user.username}/${project.name} (created .vercel and added it to .gitignore)`
    );

    await expect(exitCodePromise).resolves.toEqual(0);

    const projectJson = await readJSON(join(cwd, '.vercel/project.json'));
    expect(projectJson.orgId).toEqual(user.id);
    expect(projectJson.projectId).toEqual(project.id);
  });

  it('should allow specifying `--project` flag', async () => {
    const cwd = setupTmpDir();
    const user = useUser();
    useTeams('team_dummy');
    const { project } = useProject({
      ...defaultProject,
      id: basename(cwd),
      name: basename(cwd),
    });
    useUnknownProject();

    client.cwd = cwd;
    client.setArgv('--project', project.name!, '--yes');
    const exitCodePromise = link(client);

    await expect(client.stderr).toOutput(
      `Linked to ${user.username}/${project.name} (created .vercel and added it to .gitignore)`
    );

    await expect(exitCodePromise).resolves.toEqual(0);

    const projectJson = await readJSON(join(cwd, '.vercel/project.json'));
    expect(projectJson.orgId).toEqual(user.id);
    expect(projectJson.projectId).toEqual(project.id);
  });

  it('should allow overwriting existing link', async () => {
    const cwd = setupTmpDir();
    const user = useUser();
    useTeams('team_dummy');
    const { project: proj1 } = useProject({
      ...defaultProject,
      id: 'one',
      name: 'one',
    });
    const { project: proj2 } = useProject({
      ...defaultProject,
      id: 'two',
      name: 'two',
    });
    useUnknownProject();

    client.cwd = cwd;
    client.setArgv('--project', proj1.name!, '--yes');
    await expect(link(client)).resolves.toEqual(0);

    let projectJson = await readJSON(join(cwd, '.vercel/project.json'));
    expect(projectJson.orgId).toEqual(user.id);
    expect(projectJson.projectId).toEqual(proj1.id);

    client.setArgv('--project', proj2.name!, '--yes');
    await expect(link(client)).resolves.toEqual(0);

    projectJson = await readJSON(join(cwd, '.vercel/project.json'));
    expect(projectJson.orgId).toEqual(user.id);
    expect(projectJson.projectId).toEqual(proj2.id);
  });
});