StaticDiscoveryTest.php

<?php

namespace Drupal\KernelTests\Core\Plugin\Discovery;

use Drupal\Component\Plugin\Discovery\StaticDiscovery;

/**
 * Tests that plugins using static discovery are correctly discovered.
 *
 * @group Plugin
 */
class StaticDiscoveryTest extends DiscoveryTestBase {
    protected function setUp() {
        parent::setUp();
        $this->expectedDefinitions = [
            'apple' => [
                'label' => 'Apple',
                'color' => 'green',
            ],
            'cherry' => [
                'label' => 'Cherry',
                'color' => 'red',
            ],
            'orange' => [
                'label' => 'Orange',
                'color' => 'orange',
            ],
        ];
        // Instead of registering the empty discovery component first and then
        // setting the plugin definitions, we set them first and then delete them
        // again. This implicitly tests StaticDiscovery::deleteDefinition() (in
        // addition to StaticDiscovery::setDefinition() which we need to use
        // anyway).
        $discovery = new StaticDiscovery();
        foreach ($this->expectedDefinitions as $plugin_id => $definition) {
            $discovery->setDefinition($plugin_id, $definition);
        }
        $this->discovery = clone $discovery;
        foreach ($this->expectedDefinitions as $plugin_id => $definition) {
            $discovery->deleteDefinition($plugin_id);
        }
        $this->emptyDiscovery = $discovery;
    }

}