added index route tests

Author: ryanflorence

modules/__tests__/IndexRoute-test.js

@@ -0,0 +1,63 @@
+/*eslint-env mocha */
+/*eslint react/prop-types: 0*/
+import expect from 'expect'
+import React from 'react'
+import createHistory from 'history/lib/createMemoryHistory'
+import IndexRoute from '../IndexRoute'
+import Router from '../Router'
+import Route from '../Route'
+
+describe('an <IndexRoute/>', function () {
+
+  var node
+  beforeEach(function () {
+    node = document.createElement('div')
+  })
+
+  afterEach(function () {
+    React.unmountComponentAtNode(node)
+  })
+
+  var Parent = React.createClass({
+    render () {
+      return <div>parent {this.props.children}</div>
+    }
+  })
+
+  var Child = React.createClass({
+    render () {
+      return <div>child </div>
+    }
+  })
+
+  it('renders when its parent’s url matches exactly', function (done) {
+    React.render((
+      <Router history={createHistory('/')}>
+        <Route path="/" component={Parent}>
+          <IndexRoute component={Child}/>
+        </Route>
+      </Router>
+    ), node, function () {
+      expect(node.textContent.trim()).toEqual('parent child')
+      done()
+    })
+  })
+
+  describe('nested deeply in the route hierarchy', function () {
+    it('renders when its parent’s url matches exactly', function (done) {
+      React.render((
+        <Router history={createHistory('/test')}>
+          <Route path="/" component={Parent}>
+            <IndexRoute component={Child}/>
+            <Route path="/test" component={Parent}>
+              <IndexRoute component={Child}/>
+            </Route>
+          </Route>
+        </Router>
+      ), node, function () {
+        expect(node.textContent.trim()).toEqual('parent parent child')
+        done()
+      })
+    })
+  })
+})