add ability to customize the content-type header

lib/scheme.js

@@ -12,6 +12,11 @@ var headers = {
     'Access-Control-Allow-Origin': '*',
     'Content-Type': 'text/plain'
 };
+var CONTENT_TYPE = {
+    js: 'application/javascript',
+    css: 'text/css',
+    json: 'application/json'
+};
 
 var RE_DELAY_RANGE = /(\d+)-(\d+)/;
 
@@ -25,6 +30,21 @@ function mix(reciever, sender) {
     return reciever;
 }
 
+function done(req, res, code, headers, body) {
+    var query  = parse(req.url).query,
+        parsed = qs.parse(query),
+        type   = parsed.type;
+
+    if (CONTENT_TYPE[type]) {
+        headers = mix({
+            'Content-Type': CONTENT_TYPE[type]
+        }, headers);
+    }
+
+    res.writeHead(code, headers);
+    res.end(body);
+}
+
 var rand = exports.rand = function (min, max) {
     return Math.random() * (max - min) + min;
 };
@@ -44,17 +64,17 @@ exports.status = function (code, res) {
 };
 
 exports.get = function (req, res, body) {
-    var code = ((req.method === 'GET' || req.method === 'HEAD' || req.method === 'OPTIONS') ? 200 : 403);
+    var code = ((req.method === 'GET' || req.method === 'HEAD' || req.method === 'OPTIONS') ? 200 : 403),
+        content = body || parse(req.url).query || '';
 
-    res.writeHead(code, headers);
-    res.end(body || parse(req.url).query || '');
+    done(req, res, code, headers, content);
 };
 
 exports['delete'] = function (req, res, body) {
-    var code = ((req.method === 'DELETE') ? 200 : 403);
+    var code = ((req.method === 'DELETE') ? 200 : 403),
+        content = body || parse(req.url).query || '';
 
-    res.writeHead(code, headers);
-    res.end(body || parse(req.url).query || '');
+    done(req, res, code, headers, content);
 };
 
 var post = function (method, req, res, body) {
@@ -79,8 +99,7 @@ var post = function (method, req, res, body) {
 
         sent = true;
 
-        res.writeHead(code, headers);
-        res.end(body);
+        done(req, res, code, headers, body);
     }
 
     // Check if we have data, and aid Express' `req` object.
@@ -136,8 +155,8 @@ exports.delay = function (req, res, body) {
         if (scheme && exports[scheme]) {
             exports[scheme](req, res, body);
         } else {
-            res.writeHead(200, headers);
-            res.end('waited for ' + seconds + ' seconds');
+            done(req, res, 200, headers, 'waited for '
+                + seconds + ' seconds');
         }
     }, seconds * 1000);
 };
@@ -160,10 +179,9 @@ exports.json = function (req, res, body) {
         json = '{ "echo": true }';
     }
 
-    res.writeHead(200, mix({
-        'Content-Type': 'application/json'
-    }, headers));
-    res.end(json);
+    done(req, res, 200, mix({
+        'Content-Type': CONTENT_TYPE.json
+    }, headers), json);
 };
 
 exports.jsonp = function (req, res) {
@@ -208,8 +226,7 @@ exports.jsonp = function (req, res) {
         json = callback + '(' + JSON.stringify(content) + ');';
     }
 
-    res.writeHead(code, mix({
-        'Content-Type': 'application/json'
-    }, headers));
-    res.end(json);
+    done(req, res, code, mix({
+        'Content-Type': CONTENT_TYPE.json
+    }, headers), json);
 };

package.json

@@ -2,7 +2,7 @@
     "name": "echoecho",
     "description": "Simple testing echo responses to HTTP requests",
     "author": "Dav Glass <davglass@gmail.com>",
-    "version": "0.1.6",
+    "version": "0.1.7",
     "devDependencies": {
         "vows": "*",
         "yui-lint": "~0.1.1",

tests/tests.js

@@ -902,5 +902,37 @@ testRoutes.forEach(function (route) {
             = assertDelayedRoute(route.name, route.method);
 });
 
+// -- `type` query parameter tests --------------------------------------------
+
+function assertContentType(route, method) {
+    var path = '/foo/bar/baz/echo/' + route + '?type=css';
+        context = {
+            topic: function() {
+                fetch({
+                    method: method,
+                    path: path
+                }, this.callback);
+            }
+        };
+
+    context[route + ' route should respond with specified content type'] = function (res) {
+        assert.equal(res.headers['content-type'], 'text/css');
+    }
+
+    return context;
+}
+
+tests['should be loaded']
+     ['and should load paths']
+     ['and should respond with specified content type'] = {};
+
+testRoutes.forEach(function (route) {
+    tests['should be loaded']
+         ['and should load paths']
+         ['and should respond with specified content type']
+         ['for route ' + route.name]
+            = assertContentType(route.name, route.method);
+});
+
 
 vows.describe('echoecho').addBatch(tests).export(module);