John Lees-Miller

A confidence interval is a good way to express the uncertainty in an estimate. This post is about how to calculate approximate confidence intervals in portable (mostly) standard SQL using bootstrapping. We’ll also see that BigQuery is surprisingly fast...

This post is the third in a short series about automated testing in node.js web applications with Docker. So far, we have looked at backend testing and frontend testing. This post will be about end-to-end testing, which covers both frontend and backend...

This post is the second in a short series about automated testing in node.js web applications with Docker. Last time, we looked at backend testing; this time, we’ll look at frontend testing.
To illustrate, we’ll continue building and testing our example application: a simple TODO list manager. So far, we’ve built and tested a RESTful API to manage the task list:...

My last post covered the basics of how to get a node.js application running in Docker. This post is the first in a short series about automated testing in node.js web applications with Docker.
It boils down to running npm test in a Docker container, which may not seem like it should require multiple blog posts! However, as an application gets more complicated and requires more kinds of testing, such as frontend testing and end-to-end testing...