Using taste in codepen.io

index.html

<div id="results"/>

main.js

import {createSuite, expect, is, runTests, formatTestResultsAsText} from "https://cdn.skypack.dev/@benchristel/taste@0.3.1";

const {test, getAllTests} = createSuite()

test("math", {
  "adds"() {
    expect(1 + 1, is, 2)
  }
})

const results = await runTests(getAllTests())
document.getElementById("results").innerText = formatTestResultsAsText(results)

style.css

#results {
  white-space: pre-wrap;
  font-family: monospace;
}