Upgrade ember qunit, create new interface for testing components

test/javascripts/helpers/component-test.js.es6

@@ -0,0 +1,22 @@
+import createStore from 'helpers/create-store';
+
+export default function(name, opts) {
+  opts = opts || {};
+
+  test(name, function(assert) {
+    if (opts.setup) {
+      const store = createStore();
+      opts.setup.call(this, store);
+    }
+    this.container.register('site-settings:main', Discourse.SiteSettings, { instantiate: false });
+    this.container.injection('component', 'siteSettings', 'site-settings:main');
+
+    andThen(() => {
+      this.render(opts.template);
+    });
+
+    andThen(() => {
+      opts.test.call(this, assert);
+    });
+  });
+}