yo-inception

Imagine if you could run your generated tests within your yeoman generator tests, just as simple as dreaming within a dream... Lol

Install

$ npm install --save-dev yo-inception

or

$ yarn add --dev yo-inception

Examples

More examples coming soon...

Jest Example

describe('run generated tests', () => {
  let inception;
 
  beforeAll(done => {
    inception = new Inception(path.join(__dirname, 'tempDir'));
    inception.copyPackageJson(
      path.join(__dirname, '../path/to/generator/templates/_package.json'), {
        someAnswer: true
      }
    );
    return inception.npmInstall()
      .then(() => inception.runGen(path.join(__dirname, '../path/to/generator'), { someAnswer: true }))
      .then(() => done());
  });
 
  it('should pass', async () => {
      await expect(inception.runAsyncCommand('npm', ['run', 'test-pass'])).resolves.toBe(0);
  });
 
  afterAll(() => {
    inception.clean();
  });
});

Copy and process package.json into tempDir

const Inception = require('yo-inception');
const path = require('path');
const inception = new Inception(path.join(__dirname, 'tempDir');
inception.copyPackageJson(
  path.join(__dirname, '../path/to/generator/_package.json'), {
    someAnswer: true
  });

Install dependencies into tempDir (package.json required in tempDir)

const Inception = require('yo-inception');
const path = require('path');
const inception = new Inception(path.join(__dirname, 'tempDir');
// with npm
inception.npmInstall();
// or with yarn
inception.yarnInstall();

Run test command on generated code (node_modules needs to be present in tempDir)

const Inception = require('yo-inception');
const path = require('path');
const inception = new Inception(path.join(__dirname, 'tempDir');
inception.runGen(path.join(__dirname, '../path/to/gen'), { someAnswer: true })
  .then(() => inception.runAsyncCommand(['gulp'], ['test']));

Clean TempDir

const Inception = require('yo-inception');
const path = require('path');
const inception = new Inception(path.join(__dirname, 'tempDir');
inception.clean(); // removes tempDir