Add test for non-existent route returning 404 and refactor root route…

… test

test/routes/root.test.js

@@ -1,13 +1,28 @@
-"use strict";
+'use strict'
 
-const { test } = require("tap");
-const { buildApp } = require("../helper");
+const { test } = require('tap')
+const { buildApp } = require('../helper')
 
-test("default root route", async (t) => {
-  const app = await buildApp(t);
+test('default root route', async (t) => {
+  const app = await buildApp(t)
 
   const res = await app.inject({
-    url: "/",
-  });
-  t.same(JSON.parse(res.payload), { root: true });
-});
+    url: '/',
+  })
+  t.same(JSON.parse(res.payload), { root: true })
+})
+
+test('non-existent route returns 404', async (t) => {
+  const app = await buildApp(t)
+
+  const res = await app.inject({
+    url: '/non-existent',
+  })
+  t.equal(res.statusCode, 404)
+  t.same(JSON.parse(res.payload), {
+    statusCode: 404,
+    error: 'Not Found',
+    message: 'The requested resource could not be found',
+    requestId: JSON.parse(res.payload).requestId,
+  })
+})