To test Drupal 8 tests by the command line, you need to do the following. You need to export two environment variables first:
Then you can execute the test by the following command, being in the Drupal root folder:
vendor/bin/phpunit -c core modules/my_module/tests/src/Kernel/MyTest.php
Make sure to set the environment variable for PhpStorm:
export XDEBUG_CONFIG="remote_enable=1 remote_mode=req remote_port=9000 remote_host=127.0.0.1 remote_connect_back=0"
There's a phpunit.xml.dist file in PHP projects. That's a template for your PHPUnit configuration. You can specifiy there some PHP ini settings. By this method you do not need to export the variables like above. Copy it to phpunit.xml and set there your settings like follows:
<phpunit bootstrap="tests/bootstrap.php" colors="true"
<!-- Set error reporting to E_ALL. -->
<ini name="error_reporting" value="32767"/>
<!-- Do not limit the amount of memory tests take to run. -->
<ini name="memory_limit" value="-1"/>
<!-- Example SIMPLETEST_BASE_URL value: http://localhost -->
<env name="SIMPLETEST_BASE_URL" value="http://pbt-d8"/>
<!-- Example SIMPLETEST_DB value: mysql://username:password@localhost/databasename#table_prefix -->
<env name="SIMPLETEST_DB" value="mysql://root:password@localhost/pbt-d8"/>
<!-- Example BROWSERTEST_OUTPUT_DIRECTORY value: /path/to/webroot/sites/simpletest/browser_output -->
<env name="BROWSERTEST_OUTPUT_DIRECTORY" value="/home/peter/d8-tests"/>
Afterwards you are able to run your test without the manual environment variables setting, just by specifying your configuration directory by the "-c" parameter. Example:
vendor/bin/phpunit -c modules/permissions_by_term modules/permissions_by_term/tests/src/Kernel/SelectTermTest.php
This command cannot execute SimpleTest tests, which inherit from the WebTestBase class. Only unit tests and tests which inherits from the KernelTestBase class can be run.
Runs a SimpleTest
// --- SimpleTests
php core/scripts/run-tests.sh --url http://d8-paragraphs:8888 --browser --verbose --color --concurrency 4 --class 'Drupal\paragraphs\Tests\ParagraphsPreviewTest'
If the debug mode is switched on in PhpStorm and the debugger does not stop at the breakpoint and you are getting the following output in the debugger window:
Remote file path '/home/user/Websites/my-project/-' is not mapped to any file path in project
If you have already setup path mapping, then there's probably any error in your code. Chances are, that it is in the first line of the setUp() method of your test class, which inherits from KernelTestBase. Then you probably do not have Drupal 8.2.x but Drupal 8.1.x. If it's in the first line, you can insert any code line or insert
With this function the debugger will be forced to stop on a specific line.
PhpStorm IDE settings (version 2016.1.2)
If you are executing the tests from the command line (and probably also via the IDE itself) it's important that you setup the path mappings, so that Xdebug can recognize your test's location. You can to this in PhpStorm's settings at "Languages & Frameworks > PHP > Servers". Create a host for your Drupal website host and set the path mapping to your tests directory. An example you can find in the screenshot below: