Journal

Stimulus JS is great but doesn’t provide any documentation for testing controllers, so here’s some of my own that I’ve picked up.

Required 3rd-party libraries #

• jest
• jest-dom

Basic Test #

// hello_controller.test.js
import { Application as StimulusApp } from "stimulus";
import HelloController from "path/to/js/hello_controller";

describe("HelloController", () => {
  beforeEach(() => {
    // Insert the HTML and register the controller
    document.body.innerHTML = `
      <div data-controller="hello">
        <input data-target="hello.name" type="text">
        <button data-action="click->hello#greet">
          Greet
        </button>
        <span data-target="hello.output">
        </span>
      </div>
    `;
    StimulusApp.start().register('hello', HelloController);
  })

  it("inserts a greeting using the name given", () => {
    const helloOutput =  document.querySelector("[data-target='hello.output']");
    const nameInput = document.querySelector("[data-target='hello.name']");
    const greetButton = document.querySelector("button");
    // Change the input value and click the greet button
    nameInput.value = "Laurence";
    greetButton.click();
    // Check we have the correct greeting
    expect(helloOutput).toHaveTextContent("Hello, Laurence!");
  })
})

I wanted to see if it was possible to create SVG charts that would work without JS. Well, it is. I've also created an experimental Svelte component library called Pancake to make these techniques easier to use.

RegExr is an online tool to learn, build, & test Regular Expressions.

Clair and I just watched The Farewell, a comedy-drama film written and directed by Lulu Wang starring Awkwafina and Zhao Shuzhen, and really enjoyed it. Interesting/difficult subject matter and really nicely done. If you need a break from grisly murder cases etc then I can heartily recommend it.

The sessions recorded by the band in Memphis with the legendary record producer Tom Dowd, along with the Muscle Shoals Rhythm Section musicians Roger Hawkins, drums, and David Hood, bass, did not make the light of day, because some of the mixes were not suitable in the musical climate at the time.

As I got on my usual bus from Stockwell St to Vic Rd this eve, I noticed it was the same driver whose bus I’d taken twice last week and both times it had broken down – that’s two days in a row – leaving me to walk home in the usual January post-apocalyptic shitstorm. I got on his bus today and no sooner was it 200 yards down the road than it crashed into a taxi, across from Marks and Sparks. Everybody out – again. That’s 3 times I’ve been on his bus, and three times it’s broken down for one reason or another. The shittest hat-trick ever 😂. I need to find out this guy’s name so I can never get on a plane with him.

My point with all this is that it’s easy to see every problem or design as a new component or a mix of currently existing components. But instead, we should make components that can slot into each other neatly, rather just continue to make more components.

Here’s Rob Weychert advocating a combination of CSS custom properties, calc() and Sass to automate the construction of a flexible typographic scale in CSS.

A collection of links for free stock photography, video and illustration websites