Mocking TypeScript Modules with Sinon
Lately, my team has been looking for better ways to create and maintain mocks in our TypeScript project. In particular, we wanted an easy way to mock out modules that we built using Sinon.JS.
Author: Andy Peterson
Lifting Functions into Promises in JavaScript
When working on a JavaScript project, I usually spend a lot of time around promises. Lately, I’ve been using this helpful function called liftP that makes working with promises a little bit easier.
Building a Family Tree with GraphQL – Part 2: Adding New Resolvers
In my last post, I described how you can build flexible APIs with GraphQL, using a family tree API as my demonstration. The implementation of the API was fairly simple, and I was able to traverse the graph of relationships between different people in the data set. In this post, I’ll demonstrate how we can […]
Building a Family Tree With GraphQL – Part 1: Creating a Simple GraphQL API
Over the past year, I’ve been working with GraphQL to build APIs. GraphQL is a query language that allows for flexible endpoints for servers, giving consumers the power to control what data they are receiving.
Mocking in JavaScript Unit Tests Using Sinon.JS
Lately, I’ve been using Sinon.JS for mocking in my unit tests. By using mocks for dependencies inside functions, I can write unit tests that are resilient to a changing codebase. Functions with mocks can also be developed without worrying about the chain of dependencies that could affect the logic inside the functions.
Using State Tables for Testing
Tests can benefit a project in many different ways. For example, they help ensure that the software behaves as expected. They also help document that functionality for pieces of code that other developers may have to maintain. Lately, I’ve been using state tables in my tests to improve both of these benefits. State tables allow for […]
Naming Things Is Hard
When making software, you have to name a lot of things. There are functions, classes, numbers, data models, etc., and they all need meaningful names to ensure better communication within a team. Over the past few months, I’ve noticed a few things that make naming things hard in a software project. These difficulties may be […]
Using Higher-Order Functions to Build Queries in Knex.js
My team has been using Knex.js to build database queries for our latest project. To create increasingly complex queries, we developed a pattern to generate SQL queries using higher-order functions. I’d like to share how we leverage these higher-order functions to make our query builders modular, concise, and very easy to understand.
Three Tips for a Positive, Effective Team from Casey Watts
I recently heard the excellent talk “A Neurobiologist’s Guide to Mind Manipulation” by Casey Watts at EmberConf. Part of the talk focused on techniques for keeping a positive attitude, so no one shuts down or shies away from discussion during the project. Basically, having positive, active teammates leads to a more effective team. Here are […]
Timing Your Queries in Knex.js for Node.js
While developing web applications, I keep a close eye on performance issues, particularly in database queries. In my latest project, I’ve been using Knex.js, a SQL query builder for Node.js. I developed a method of logging the queries executed by Knex.js as well as the execution times for each query. This method can be applied […]