Node native testing demo

Basic demo of Node native testing and how to make it work with TypeScript.

Prerequisites

You will need Node 19 or later.

Install

Run npm install.

Run

Run npm test.

It should show something similar to:

ℹ (node:31562) ExperimentalWarning: Custom ESM Loaders is an experimental feature and might change at any time
ℹ (Use `node --trace-warnings ...` to show where the warning was created)
✔ Basic greet (0.246333ms)
▶ Greet
  ✔ Should greet (0.111875ms)
  ✔ Should fail (0.082334ms)
▶ Greet (0.301583ms)

▶ Greet async
  ✔ Should greet (0.050583ms)
  ✔ Should fail (0.405708ms)
▶ Greet async (0.505708ms)

ℹ tests 5
ℹ suites 2
ℹ pass 5
ℹ fail 0
ℹ cancelled 0
ℹ skipped 0
ℹ todo 0
ℹ duration_ms 133.355084