PhantomJS is a lightweight headless test runner which is perfect for command-line-based testing. What is PhantomJS? It allows us to access the browser’s DOM API. After all, PhantomJS is still a browser without the GUI skin. It is suitable for local development, version control pre-commit hooks testing, and as part of your continuous integration pipeline testing.
The headless test runner WILL NOT be a replacement for Selenium functional testing. The idea behind a command-line base testing suite is that it will provide fast feedback for a deployed web application without spinning up a browser. It is critical to set a standard where developers naturally execute static code analysis, unit tests, server spec tests, and PhantomJS tests in a local development environment before creating a pull request. The next section will help you understand why a well-defined cloud testing strategy will reduce web application bugs in production.
Cloud Testing Strategy
A major component of cloud platform solutions is that all of the code goes through the gauntlet of testing before merging a pull request into the master branch, and before pushing changes to production. We need to prove that the code deploys the web application correctly before we start using it in the cloud staging and production environment. It’s much easier and cheaper to catch and troubleshoot issues locally, as opposed to having production servers go down or affect the user experience. (more…)