test component index and stub component

test/components/stub-component.js

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+/* A dummy React component which we use for stubbing out app-level components
+ */
+'use strict';
+
+var React = require('react');
+
+module.exports = React.createClass({
+    render: function() {
+        return <div />;
+    },
+});

test/test-component-index.js

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+/*
+ * test-component-index.js
+ *
+ * Stub out a bunch of the components which we expect the application to
+ * provide
+ */
+var components = require('../src/component-index.js').components;
+var stub = require('./components/stub-component.js');
+
+components['structures.LeftPanel'] = stub;
+components['structures.RightPanel'] = stub;
+components['structures.RoomDirectory'] = stub;
+components['views.globals.MatrixToolbar'] = stub;
+components['views.globals.GuestWarningBar'] = stub;
+components['views.globals.NewVersionBar'] = stub;
+components['views.elements.Spinner'] = stub;
+
+module.exports.components = components;