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Drupal 8 PHPUnit Deprecation Example
An example Drupal 8 project that uses PHPUnit to highlight deprecations within custom module code.
This project contains an example
module that uses a deprecated function - drupal_set_message()
.
When the PHPUnit tests are run, the deprecation notice is displayed in the test output:
Remaining deprecation notices (1)
1x: drupal_set_message() is deprecated in Drupal 8.5.0 and will be removed before Drupal 9.0.0. Use \Drupal\Core\Messenger\MessengerInterface::addMessage() instead. See https://www.drupal.org/node/2774931 1x in DisplayMessageTest::a_message_is_displayed_on_nodes from Drupal\Tests\example\Functional
Also, a non-zero exit code is returned.
Running the tests
The project uses DDEV and contains a custom command for running PHPUnit (see this blog post that describes how to add it).
To use the command and run the tests:
ddev phpunit web/modules/custom