Drupal development tests11/14/2023 Nevertheless, people can be inconsistent too. At my first job in the computer industry, I developed a great deal of respect for QA testers who could sniff out bugs I never would have expected. Testing an application completely ensures that existing, unchanged functionality remains just that: existing and unchanged.īut why automated testing? Surely, people would be better at this? Some are, of course. Implementing a new feature or changing some seemingly banal detail can lead to all kinds of wonkiness and broken functionality. The real-world grind of writing and maintaining a software project isn't something that often makes it into a college classroom. I can't fault my professors for not explaining the point to me. After all, I thought at the time, why would software ever need to be tested more than once? Why would it ever change? At the time, I thought that writing software inside your software to test your own software was a little circuitous. When I was studying computer science in college, we had a unit on writing automated tests. In this series, we'll take a closer look at how Drupal 8 provides testing functionality, the tools available, and how to write tests. Furthermore, a standard framework allowed Drupal core maintainers to maintain less code directly. PHPUnit is used by many different PHP projects, making it easier for new Drupal developers to write tests. In Drupal 8, it was decided we should "get off the island" and adopt a more standard testing framework. While this had a high degree of integration with Drupal, it was also a drupalism, something so specific to Drupal itself that it became yet another barrier to new developers. Even tests against Javascript functionality were written in PHP and executed by the Simpletest framework. Drupal has used automated testing for years, and even provides a vast, public infrastructure to run those tests on .ĭrupal 7 relied on its own testing framework, Simpletest. Tests ensure that the promised functionality of an application works as expected. You’ll notice that our seemingly simple change to the PluralTranslatableMarkup.Automated testing is a cornerstone of modern programming. Clicking on “PHP 7 & MySQL 5.5 23,209 pass, 17 fail” will bring us to the test results page, which at first glance seems indecipherable. Let’s head back to comment #32 of issue #2273889 and see if our patch is breaking anything. Now the real fun begins… and the “fast-track” ends.įor any patch to be considered for inclusion in Drupal core, it will need to (a) not break existing tests and (b) provide a test which, without the patch, confirms that the problem exists. You can try the “0 whatevers” test again and the bug should be fixed. You have now patched your local version of Drupal. In your dev environment, you can confirm that the problem exists (provided the issue has not yet been fixed) by following the instructions in the “To reproduce this problem:” section of the issue description on your local development environment.Īny calls to drush can be run on the Docker container like so:Ĭd. See the project’s README for more details. The first time you run this, it will have to download Docker images with Drupal, MySQL, and install everything you need for local development. Confirm you can access that local development environment at an address like. scripts/deploy.sh, you will see a login link to your development environment. drupal8_core_dev_helper/drupal near the end of the output of. This will create everything you need: a webserver container and database container, and your Drupal core code which will be placed in. I have create a project hosted on GitHub which will help you set up everything you need in Docker contains without local dependencies other than Docker, or any manual steps. Everything we need, Apache web server, MySql server, Drush, Drupal, will reside on Docker containers, so we won’t need to install anything locally except Docker. Is it possible to start useful local development on this within 10 minutes on a computer with nothing installed except Docker? Let’s try… Step 1: install Docker The process documented process for setting up a local environment and running tests locally is, in my opinion, so complex that it can be a barrier to even determined developers.įor those wishing to locally test and develop core patches, I think it is possible to automate the process down to a few steps and few minutes here is an example with a core issue, #2273889 Don’t use one language’s plural index formula with another language’s string in the case of untranslated strings using format_plural(), which, at the time of this writing, results in the number 0 being displayed as 1 in certain cases. Fast-track local Drupal 8 core patch development and testing
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