add tests

serve-static/serve-static-tests.ts

@@ -0,0 +1,20 @@
+/// <reference path="serve-static.d.ts" />
+
+import express = require('express');
+import serveStatic = require('serve-static');
+var app = express();
+
+app.use(serveStatic('/1'));
+app.use(serveStatic('/2', { }));
+app.use(serveStatic('/3', {
+    dotfiles: 'ignore',
+    etag: true,
+    extensions: ['html'],
+    index: true,
+    lastModified: true,
+    maxAge: 0,
+    redirect: true,
+    setHeaders: function(res: express.Response, path: string, stat: any) {
+        res.setHeader('Server', 'server-static middleware');
+    }
+}));