Add daily email for 2024-02-07

Running tests in parallel with Paratest

source/_daily_emails/2024-02-07.md

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+---
+title: Running tests in parallel with Paratest
+date: 2024-02-07
+permalink: archive/2024/02/07/running-tests-in-parallel-with-paratest
+snippet: |
+    Run your tests quicker by executing them in parallel with Paratest.
+tags:
+    - software-development
+    - automated-testing
+    - test-driven-development
+    - phpunit
+---
+
+{% block content %}
+Something that I've recently added to my PHP projects is [Paratest].
+
+It adds parallel testing to PHPUnit, so your tests will be run in parallel instead of sequentially.
+
+For the example module in my [automated testing in Drupal email course][atdc], using Paratest reduces the execution time from ~16 seconds to ~8 seconds.
+
+In a client project with 136 tests, it reduces the time from four and a half minutes to less than two minutes.
+
+This is a big improvement just from running a single Composer command to add Paratest.
+
+There's also [an open issue][issue] for using it for Drupal core's tests, which is something I'll keep an eye on and will look to contribute to.
+
+[atdc]: {{site.url}}/atdc
+[issue]: https://www.drupal.org/project/drupal/issues/2781123
+[paratest]: https://github.com/paratestphp/paratest
+{% endblock %}
+
+{% block cta %}
+P.S. Do you need immediate access to an expert Drupal Developer? [With my Drupal development subscription][subscription], make unlimited requests for a fixed monthly price in less time than posting to a job board!
+
+[subscription]: {{site.url}}/subscription
+{% endblock %}