Assert on unsupported route method

lib/route.js

@@ -1,6 +1,7 @@
 'use strict';
 
 const Assert = require('assert');
+const Http = require('http');
 
 const Bounce = require('@hapi/bounce');
 const Catbox = require('@hapi/catbox');
@@ -19,7 +20,9 @@ const Streams = require('./streams');
 const Validation = require('./validation');
 
 
-const internals = {};
+const internals = {
+    httpVerbs: new Set([...Http.METHODS.map((s) => s.toLowerCase()), '*', '_special'])
+};
 
 
 exports = module.exports = internals.Route = class {
@@ -35,6 +38,7 @@ exports = module.exports = internals.Route = class {
 
         const method = route.method.toLowerCase();
         Hoek.assert(method !== 'head', 'Cannot set HEAD route:', route.path);
+        Hoek.assert(internals.httpVerbs.has(method), 'Unsupported "method" for route:', route.method, route.path);
 
         const path = realm.modifiers.route.prefix ? realm.modifiers.route.prefix + (route.path !== '/' ? route.path : '') : route.path;
         Hoek.assert(path === '/' || path[path.length - 1] !== '/' || !core.settings.router.stripTrailingSlash, 'Path cannot end with a trailing slash when configured to strip:', route.method, route.path);

test/route.js

@@ -85,6 +85,15 @@ describe('Route', () => {
         }).to.throw(/Invalid route options/);
     });
 
+    it('throws an error when a route uses an engine unsupported method', () => {
+
+        expect(() => {
+
+            const server = Hapi.server();
+            server.route({ method: 'HAPIIII', path: '/', handler: () => null });
+        }).to.throw(/Unsupported "method" for route/);
+    });
+
     it('throws an error when a route uses the HEAD method', () => {
 
         expect(() => {