Demonstration of WordPress plugin unit test.

Run unit testing.

Install

• Install WP-CLI
• Install PHPUnit
• Install WordPress PHPUnit or Download for Windows
• Download this plugin and extract in your stand alone folder OR in the installed WordPress /wp-content/plugins/demo-plugin-test folder.

Run

• Run the command phpunit (Recommend PHPUnit 10 and PHP 8.2).
• The result should be:

OK (1 test, 2 assertions)

Run PHP CodeSniffer.

Install

• Install PHP_CodeSniffer (recommended to install via Composer and set Windows environment PATH to vendor/bin).
• Install PHPCompatibilityWP (via Composer).
• Install WordPress Coding Standard (as standalone but DO NOT follow Add its path to the PHP_CodeSniffer configuration step).
  • Manually edit vendor/squizlabs/php_codesniffer/CodeSniffer.conf file to prepend ../../../wpcs, value.

Run

• Run the command phpcs.
• The result should be:

E 1 / 1 (100%)

And follow with more details.