webrcli/tests/init.test.js

cli tools for building node project with webr inside

const {init} = require('../src/init');
const { parsePackageJson } = require('../src/packagejsonmanip');

const path = require('path');
const os = require('os');
const fs = require('fs');

test('init works', async () => {
  // set a temp dir
  let temp_dir = path.join(os.tmpdir(), 'coucou')
  process.cwd = jest.fn().mockReturnValue(temp_dir);

  if (
    fs.existsSync(temp_dir)
  ) {
    fs.rmdirSync(
      temp_dir,
      { recursive: true, force: true }
    )
  };
  await init(temp_dir);

  expect(
    fs.existsSync(
      path.join(temp_dir, 'index.js')
    )
  ).toBe(true);

  expect(
    fs.existsSync(
      path.join(temp_dir, 'package.json')
    )
  ).toBe(true);

  let packageJson = parsePackageJson(path.join(temp_dir, 'package.json'));

  expect(
    packageJson.scripts.postinstall
    ).toBe('webrcli installFromPackageJson');

  expect(
    packageJson.scripts.start
  ).toBe('node index.js');

  expect(
    fs.existsSync(
      path.join(temp_dir, 'webr_packages')
    )
  ).toBe(true);

  expect(
    fs.existsSync(
      path.join(temp_dir, 'webr_packages', 'pkgload')
    )
  ).toBe(true);

  expect(
    fs.existsSync(
      path.join(temp_dir, 'node_modules')
    )
  ).toBe(true);

  // testing that the function return false
  // if the folder already exists
  const folder_can_be_created = await init(temp_dir);
  expect(folder_can_be_created).toBe(false);

}, 1000000);