Add multiple middlewares support

Readme.md

@@ -1,7 +1,7 @@
 # koa-mount
 
   Mount other Koa applications as middleware. The `path` passed to `mount()` is stripped
-  from the URL temporarily until the stack unwinds. This is useful for creating entire 
+  from the URL temporarily until the stack unwinds. This is useful for creating entire
   apps or middleware that will function correctly regardless of which path segment(s)
   they should operate on.
 
@@ -96,6 +96,35 @@ app.listen(3000);
 console.log('listening on port 3000');
 ```
 
+You can also mount multiple middlewares if needed. It can be useful when you want to have an endpoint secured with the same app instance.
+
+```js
+var mount = require('koa-mount');
+var koa = require('koa');
+
+function *isAuthed(next){
+  // apply logic here
+}
+
+function *hello(next){
+  yield next;
+  this.body = 'Hello';
+}
+
+function *world(next){
+  yield next;
+  this.body = '*Secured* World';
+}
+
+var app = new koa();
+
+app.use(mount('/hello', hello));
+app.use(mount('/secured', [isAuthed, world]));
+
+app.listen(3000);
+console.log('listening on port 3000');
+```
+
 ### Optional Paths
 
   The path argument is optional, defaulting to "/":

index.js

@@ -24,7 +24,11 @@ module.exports = mount;
  * @api public
  */
 
-function mount(prefix, app) {
+function mount(prefix, _app) {
+  var app = Array.isArray(_app)
+    ? compose(_app)
+    : _app;
+
   if ('string' != typeof prefix) {
     app = prefix;
     prefix = '/';

test/mounting.js

@@ -2,6 +2,7 @@
 var request = require('supertest');
 var mount = require('..');
 var koa = require('koa');
+var should = require('should');
 
 describe('mount(app)', function(){
   it('should mount at /', function(done){
@@ -237,6 +238,59 @@ describe('mount(path, app)', function(){
       });
     })
   })
+
+  describe('when multiple middlewares are passed', function() {
+    var app = new koa();
+
+    var say = text => function *(next) {
+      this.body = text;
+      yield next;
+    };
+
+    var setStatus = status => function *() {
+      this.status = status;
+    };
+
+    app.use(mount('/hello', [say('hello'), setStatus(201)]));
+    app.use(mount('/world', [say('world'), setStatus(200)]));
+    app.use(mount('/prefix', function *() {
+      this.status = 204;
+    }));
+
+    var server = app.listen();
+
+    it('should match /prefix', function(done) {
+      request(server)
+        .get('/prefix')
+        .expect(204, done)
+    })
+
+    it('should match /hello', function(done){
+      request(server)
+      .get('/hello')
+      .end(function (err, res) {
+        should.not.exists(err);
+        should.exists(res);
+        res.statusCode.should.be.equal(201);
+        should.exists(res.text);
+        res.text.should.be.equal('hello');
+        done();
+      })
+    })
+
+    it('should match /world', function(done){
+      request(server)
+      .get('/world')
+      .end(function (err, res) {
+        should.not.exists(err);
+        should.exists(res);
+        res.statusCode.should.be.equal(200);
+        should.exists(res.text);
+        res.text.should.be.equal('world');
+        done();
+      })
+    })
+  })
 })
 
 describe('mount(/prefix)', function(){
@@ -317,4 +371,4 @@ describe('mount(/prefix/)', function(){
     .get('/prefix/lkjasdf')
     .expect(204, done);
   })
-})
+})