app.respond: support 205 status codes as no-content

pretty new to me, but it’s basically the same as 204

lib/application.js

@@ -102,7 +102,7 @@ app.callback = function(){
 
 /**
  * Set signed cookie keys.
- * 
+ *
  * These are passed to [KeyGrip](https://github.com/jed/keygrip),
  * however you may also pass your own `KeyGrip` instance. For
  * example the following are acceptable:
@@ -180,7 +180,7 @@ function *respond(next){
   var res = this.res;
   var body = this.body;
   var head = 'HEAD' == this.method;
-  var noContent = 204 == this.status || 304 == this.status;
+  var noContent = ~[204, 205, 304].indexOf(this.status);
 
   // 404
   if (null == body && 200 == this.status) {
@@ -211,12 +211,12 @@ function *respond(next){
   // Stream body
   if (body instanceof Stream) {
     if (!~body.listeners('error').indexOf(this.onerror)) body.on('error', this.onerror);
-   
+
     if (head) {
       if (body.close) body.close();
       return res.end();
     }
-   
+
     return body.pipe(res);
   }
 

test/application.js

@@ -104,19 +104,107 @@ describe('app.respond', function(){
   })
 
   describe('when .body is missing', function(){
-    it('should respond with the associated status message', function(done){
+    describe('with status=400', function(){
-      var app = koa();
+      it('should respond with the associated status message', function(done){
+        var app = koa();
 
-      app.use(function *(){
+        app.use(function *(){
-        this.status = 400;
+          this.status = 400;
-      });
+        });
 
-      var server = app.listen();
+        var server = app.listen();
 
-      request(server)
+        request(server)
-      .get('/')
+        .get('/')
-      .expect(400)
+        .expect(400)
-      .expect('Bad Request', done);
+        .expect('Bad Request', done);
+      })
+    })
+
+    describe('with status=200', function(){
+      it('should respond with a 404', function(done){
+        var app = koa();
+
+        app.use(function *(){
+          this.status = 200;
+        })
+
+        var server = app.listen();
+
+        request(server)
+        .get('/')
+        .expect(404)
+        .expect('Not Found', done);
+      })
+    })
+
+    describe('with status=204', function(){
+      it('should respond without a body', function(done){
+        var app = koa();
+
+        app.use(function *(){
+          this.status = 204;
+        })
+
+        var server = app.listen();
+
+        request(server)
+        .get('/')
+        .expect(204)
+        .expect('')
+        .end(function (err, res) {
+          if (err) return done(err);
+
+          res.header.should.not.have.property('content-type');
+          done();
+        })
+      })
+    })
+
+    describe('with status=205', function(){
+      it('should respond without a body', function(done){
+        var app = koa();
+
+        app.use(function *(){
+          this.status = 205;
+        })
+
+        var server = app.listen();
+
+        request(server)
+        .get('/')
+        .expect(205)
+        .expect('')
+        .end(function (err, res) {
+          if (err) return done(err);
+
+          res.header.should.not.have.property('content-type');
+          done();
+        })
+      })
+    })
+
+    describe('with status=304', function(){
+      it('should respond without a body', function(done){
+        var app = koa();
+
+        app.use(function *(){
+          this.status = 304;
+        })
+
+        var server = app.listen();
+
+        request(server)
+        .get('/')
+        .expect(304)
+        .expect('')
+        .end(function (err, res) {
+          if (err) return done(err);
+
+          res.header.should.not.have.property('content-type');
+          done();
+        })
+      })
     })
   })