Introduction Brakeman is a tool that scans a Ruby on Rails application for common vulnerabilities. It’s a static code analyzer that can help you find security problems before you release the application. Since you can introduce a vulnerability at any stage of you development process, it’s obvious that Brakeman should scan your application as often […]

Introduction Clojure is shipped with clojure.test — a library with basic features for writing tests. However, there are a few alternatives that aim to make writing tests more pleasant or more suitable for BDD. Expectations by Jay Fields is one of them, described as “a minimalist’s unit testing framework” with the slogan “adding signal, removing […]

Selenium is a commonly used set of tools for automating browsers. It allows you to drive a browser interaction with a web page by writing code. It’s most often used to write browser-based tests for web applications. Tests can be executed in a development environment or even on a real application as part of a […]

Clojure standard library includes a general unit testing library clojure.test. There are several other libraries created for a specific purpose in mind. One of them is Kerodon, inspired by Ruby’s Capybara. Kerodon helps you test Ring-based web applications by simulating how a user would interact with your app. The goal of Kerodon is to provide […]

Introduction This tutorial guides you through generating a new Rails 4 application with RSpec and Cucumber as testing tools. If you’d like to learn how to set up a BDD stack on a Rails 5 application, this tutorial is the best next read for you. RSpec is a testing tool often used for writing unit […]

We are continuing an introduction to RSpec, a testing tool for Ruby. After covering the very basics in the first part of this series, we will now explore other important and frequently used features of RSpec: use of subject, let helper method, before hooks and exception handling. Along the way we will encounter some more […]

NPM is a Node.js package manager that comes bundled with the installation of Node.js. It keeps track of all dependencies for your Node.js projects and gives you full control over managing them. NPM makes is easy to reuse thousands of existing open source packages that solve a multitude of common problems, as well as share […]

Mocking is a technique in test-driven development (TDD) that involves using fake dependent objects or methods in order to write a test. There are a couple of reasons why you may decide to use mock objects: As a replacement for objects that don’t exist yet. When you are working with objects which return non-deterministic values […]

Software testing is slowly becomming second nature for many developers. Knowing that your changes aren’t breaking any existing feature gives a huge confidence boost when deploying. The PHP community isn’t the first to adopt the methologies of TDD (Test-Driven Development) but it’s catching up quickly with the rest. The testing community is growing rapidly and […]

Introduction A big obstacle to the mission to treat infrastructure as code is the way we test it. In the past, the practice of writing automated tests for infrastructure did not exist. Instead, the process was manual, repetitive and error-prone: we would log into a remote machine and run various commands to verify the system. […]

The Semaphore Community is open for contributions by all developers who would like to write an article for our knowledge base. We encourage you to cover topics you are passionate about and have experience with. Nevertheless, it is useful to also have a general list of topics that we are interested in covering. Here’s an […]

Kerodon provides a friendly API for interacting with web pages in tests. With Kerodon you write a test from the perspective of a user interacting with a web application from a browser. It provides helpers for visiting a page, clicking on a button or a link, interacting with a form and inspecting the page content. […]

Semaphore is excited about building a collection of technical articles that help everyone become a well-rounded software developer. Our goal is to cover both cutting-edge technology and timeless topics on building products and collaborating within an engineering team. For this reason, the Semaphore blog is open for contributions and the goal of this article is […]

Introduction This article explains how to format Semaphore tutorials. By following the details in this guide and the companion Style Guide, your tutorial will match all of the Semaphore guidelines. Where can I submit the completed tutorial? If you have an approved writing sample and topic, you can submit the tutorial as a link to […]