improve torrent.createServer() test

- check that index page works
- wait for destroy

test/server.js

@@ -1,41 +1,49 @@
-var path = require('path')
 var fs = require('fs')
 var get = require('simple-get')
+var path = require('path')
 var test = require('tape')
 var WebTorrent = require('../')
 
 var leavesPath = path.resolve(__dirname, 'content', 'Leaves of Grass by Walt Whitman.epub')
 var leavesTorrent = fs.readFileSync(path.resolve(__dirname, 'torrents', 'leaves.torrent'))
 
-test('start http server programmatically', function (t) {
-  t.plan(4)
+test('torrent.createServer(): programmatic http server', function (t) {
+  t.plan(9)
 
   var client = new WebTorrent({ tracker: false, dht: false })
-
   client.on('error', function (err) { t.fail(err) })
   client.on('warning', function (err) { t.fail(err) })
 
-  var torrent = client.add(leavesTorrent, { dht: false, tracker: false }, function (torrent) {
+  client.add(leavesTorrent, function (torrent) {
     t.pass('got "torrent" event')
-
     var server = torrent.createServer()
+
     server.listen(0, function () {
-      t.pass('server is listening')
       var port = server.address().port
-      get.concat('http://localhost:' + port + '/0', function (err, data) {
-        if (err) throw err
-        // Verify data for first (and only file)
-        t.deepEqual(data, fs.readFileSync(leavesPath))
+      t.pass('server is listening on ' + port)
 
-        server.close()
-        client.destroy()
+      // Seeding after server is created should work
+      torrent.load(fs.createReadStream(leavesPath), function (err) {
+        t.error(err, 'loaded seed content into torrent')
+      })
+
+      var host = 'http://localhost:' + port
+
+      // Index page should list files in the torrent
+      get.concat(host + '/', function (err, data) {
+        t.error(err)
+        data = data.toString()
+        t.ok(data.indexOf('Leaves of Grass by Walt Whitman.epub') !== -1)
+
+        // Verify file content for first (and only) file
+        get.concat(host + '/0', function (err, data) {
+          t.error(err)
+          t.deepEqual(data, fs.readFileSync(leavesPath))
+
+          server.close(function () { t.pass('server closed') })
+          client.destroy(function () { t.pass('client destroyed') })
+        })
       })
-    })
-  })
-  torrent.on('ready', function () {
-    torrent.load(fs.createReadStream(leavesPath), function (err) {
-      if (err) throw err
-      t.pass('loaded seed content into torrent')
     })
   })
 })