tests: add test for matching route after error

test/app.routes.error.js

@@ -3,6 +3,22 @@ var express = require('../')
 
 describe('app', function(){
   describe('.VERB()', function(){
+    it('should not get invoked without error handler on error', function(done) {
+      var app = express();
+
+      app.use(function(req, res, next){
+        next(new Error('boom!'))
+      });
+
+      app.get('/bar', function(req, res){
+        res.send('hello, world!');
+      });
+
+      request(app)
+      .post('/bar')
+      .expect(500, /Error: boom!/, done);
+    });
+
     it('should only call an error handling routing callback when an error is propagated', function(done){
       var app = express();