Add tests and fixes for rehydration

* Barracks must get an initial state or state.location is undefined
* Replaces document.addEventListener w/ pkg handling existing ready doc

index.js

@@ -1,6 +1,7 @@
 const history = require('sheet-router/history')
 const sheetRouter = require('sheet-router')
 const document = require('global/document')
+const onReady = require('document-ready')
 const href = require('sheet-router/href')
 const hash = require('sheet-router/hash')
 const hashMatch = require('hash-match')
@@ -61,14 +62,14 @@ function choo (opts) {
     _store.model(appInit(startOpts))
     const createSend = _store.start(startOpts)
     _router = start._router = createRouter(_defaultRoute, _routes, createSend)
-    const state = _store.state()
+    const state = _store.state({state: {}})
 
     if (!selector) {
       const tree = _router(state.location.pathname, state)
       _rootNode = tree
       return tree
     } else {
-      document.addEventListener('DOMContentLoaded', function (event) {
+      onReady(function onReady () {
         const oldTree = document.querySelector(selector)
         assert.ok(oldTree, 'could not query selector: ' + selector)
         const newTree = _router(state.location.pathname, state)

package.json

@@ -25,6 +25,7 @@
   "license": "MIT",
   "dependencies": {
     "barracks": "^7.0.3",
+    "document-ready": "~1.0.1",
     "global": "^4.3.0",
     "hash-match": "^1.0.2",
     "sheet-router": "^3.1.0",

tests/browser/rehydration.js

@@ -0,0 +1,28 @@
+const test = require('tape')
+const onReady = require('document-ready')
+const choo = require('../../')
+const view = require('../../html')
+
+test('rehydration', function (t) {
+  t.plan(2)
+
+  const app = choo()
+
+  app.router((route) => [
+    route('/', function (state, prev, send) {
+      return view`<div id="app-root" onclick=${() => send('test')}>Hello world!</span>`
+    })
+  ])
+
+  var node = document.createElement('div')
+  node.innerHTML = app.toString('/')
+  node = node.childNodes[0]
+  document.body.appendChild(node)
+
+  app.start('#app-root')
+
+  onReady(function () {
+    t.equal(node.innerHTML, 'Hello world!', 'same content')
+    t.equal(typeof node.onclick, 'function', 'attaches dom listeners')
+  })
+})