How We Avoid A/B Testing Errors with Shrinkage

October 29, 2015

At Wealthfront, we use A/B tests to make our services more effective, informative, and convenient. Each A/B test consists of two or more variants of a feature or design, which we expose to visitors at random until we have have enough data to infer which is better. In a previous post, we explained why we… Read more

Testing JavaScript Modules

October 13, 2015

In our previous post we outlined benefits of writing JavaScript in modules. One benefit we didn’t mention was how much more testable JavaScript modules are. In your test file you can require the module under test and let the require system import any dependencies. The goal of this post is to outline some of the… Read more