Ljubljana, Slovenia

Virtualization

Tue, Oct 6, 2015

Testing PHP code using Docker

Setting up a testing environment can be a rewarding pursuit - if you do your testing before you deploy code, your tests can signal errors and stop you from deploying a critical mistake to production. Testing requires various software, depending on your development process. One of the most common php testing frameworks is phpunit. Let’s see how we can set up a Docker driven test environment.

Getting started with docker

Docker is a popular way of packaging your applications, or micro services into container images, which can be copied to any running docker server. Docker uses a linux kernel feature - namespacing - which allows it to run applications in isolation away from the operating system, much like virtual machines, avoiding common pitfalls of virtualization like CPU and RAM allocation. Each docker container is much like any standalone application, except for the fact that it’s isolated away from the host OS.