I am seeing one issue in this. I am getting "Exception in thread "main" org.openqa.selenium.WebDriverException: jQuery is not defined" exception on executing js.executeAsyncScript(jQueryLoader);
You can have a look on Karma which is based on NodeJs and specifically designed for AngularJs. http://karma-runner.github.io/
Another one, I've found is Gatling Probably - not the most lightweight, the scripts are written in Scala, but looks interesting.
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