@alfheim/generator-nef-tests

@alfheim/generator-nef-tests

This package is part of the battery used to create new components for the Nasdaq Experience Framework. This package creates an <ComponentName>.styles.ts[x] file, which contains styles for the created component.

Note: It is recommended that you install and use generator-nef-component rather than installing this package directly, unless you need to modify the individual file generators.

By default, a testing file for the component named Test created using this generator looks as follows:

import { mount, render, shallow } from "enzyme";
import React from "react";
import faker from "faker";

import StyledTest from "./Test.styles";

import Test from ".";

describe("Test", () => {
  let props;
  let mountedTest;
  let renderedTest;
  let shallowTest;

  const mountTestComponent = () => {
    if (!mountedTest) {
      mountedTest = mount(<Test {...props} />);
    }
    return mountedTest;
  };

  const renderTestComponent = () => {
    if (!renderedTest) {
      renderedTest = render(<Test {...props} />);
    }
    return renderedTest;
  };

  const shallowTestComponent = () => {
    if (!shallowTest) {
      shallowTest = shallow(<Test {...props} />);
    }
    return shallowTest;
  };

  beforeEach(() => {
    props = {
      children: faker.lorem.paragraph(),
      className: faker.random.word(),
      id: faker.random.word(),
      name: faker.random.word(),
      style: { color: faker.internet.color() }
    };
    mountedTest = undefined;
    renderedTest = undefined;
    shallowTest = undefined;
  });

  // Shallow / unit tests begin here
  it(`should always render a 'StyledTest' component`, () => {
    expect(shallowTestComponent().find(StyledTest).length).toBe(1);
  });

  it(`should always pass all its props to the 'StyledTest'`, () => {
    expect(
      shallowTestComponent()
        .find(StyledTest)
        .props()
    ).toMatchObject(props);
  });

  // Render / mount / integration tests begin here
});

Options

Additionally, the following options can be provided when calling the generator:

• --no-mount-tests: disable mount tests when generating the test file
• --no-render-tests: disable render tests when generating the test file
• --no-shallow-tests: disable shallow tests when generating the test file

Getting started

To install, simply run:

yarn add @alfheim/generator-nef-tests --dev

or

npm install @alfheim/generator-nef-tests --dev 

Contributing

We'd love to have your helping hand on alfheim! Go over to our issues section and see if there's anything we're looking for help with OR open up a PR if you have an idea for a way to improve the library.

License

Alfheim is open source software licensed as MIT.