test: migrate to node test runner

README.md

@@ -330,7 +330,7 @@ module.exports = App
 ```js
 'use strict'
 
-const { test } = require('tap')
+const { test } = require('node:test')
 const Fastify = require('fastify')
 const App = require('./app.js')
 
@@ -339,7 +339,7 @@ test('connect to /', async (t) => {
 
   const fastify = Fastify()
   fastify.register(App)
-  t.teardown(fastify.close.bind(fastify))
+  t.after(() => fastify.close())
   await fastify.ready()
 
   const ws = await fastify.injectWS('/', {headers: { "api-key" : "some-random-key" }})
@@ -351,7 +351,7 @@ test('connect to /', async (t) => {
   })
   ws.send('hi from client')
 
-  t.assert(await promise, 'hi from server')
+  t.assert.deepStrictEqual(await promise, 'hi from server')
   // Remember to close the ws at the end
   ws.terminate()
 })

package.json

@@ -9,7 +9,7 @@
     "lint": "eslint",
     "lint:fix": "eslint --fix",
     "test": "npm run test:unit && npm run test:typescript",
-    "test:unit": "tap",
+    "test:unit": "c8 --100 node --test",
     "test:typescript": "tsd"
   },
   "repository": {
@@ -60,12 +60,12 @@
     "@fastify/type-provider-typebox": "^5.0.0",
     "@types/node": "^22.0.0",
     "@types/ws": "^8.5.10",
+    "c8": "^10.1.3",
     "eslint": "^9.17.0",
     "fastify": "^5.0.0",
     "fastify-tsconfig": "^3.0.0",
     "neostandard": "^0.12.0",
     "split2": "^4.2.0",
-    "tap": "^18.7.1",
     "tsd": "^0.31.0"
   },
   "dependencies": {