tests: add req.acceptsEncoding tests

test/req.acceptsEncoding.js

@@ -0,0 +1,36 @@
+
+var express = require('../')
+  , request = require('supertest');
+
+describe('req', function(){
+  describe('.acceptsEncodings', function(){
+    it('should be true if encoding accpeted', function(done){
+      var app = express();
+
+      app.use(function(req, res){
+        req.acceptsEncoding('gzip').should.be.true;
+        req.acceptsEncoding('deflate').should.be.true;
+        res.end();
+      });
+
+      request(app)
+      .get('/')
+      .set('Accept-Encoding', ' gzip, deflate')
+      .expect(200, done);
+    })
+
+    it('should be false if encoding not accpeted', function(done){
+      var app = express();
+
+      app.use(function(req, res){
+        req.acceptsEncoding('bogus').should.be.false;
+        res.end();
+      });
+
+      request(app)
+      .get('/')
+      .set('Accept-Encoding', ' gzip, deflate')
+      .expect(200, done);
+    })
+  })
+})