CommentUninstallTest.php

<?php

namespace Drupal\Tests\comment\Kernel;

use Drupal\comment\Tests\CommentTestTrait;
use Drupal\Core\Extension\ModuleUninstallValidatorException;
use Drupal\field\Entity\FieldStorageConfig;
use Drupal\KernelTests\KernelTestBase;
use Drupal\node\Entity\NodeType;

/**
 * Tests comment module uninstall.
 *
 * @group comment
 */
class CommentUninstallTest extends KernelTestBase {
    use CommentTestTrait;
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'comment',
        'field',
        'node',
        'system',
        'text',
        'user',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() {
        parent::setUp();
        $this->installEntitySchema('comment');
        $this->installConfig([
            'comment',
        ]);
        $this->installSchema('user', [
            'users_data',
        ]);
        NodeType::create([
            'type' => 'article',
        ])->save();
        // Create comment field on article so that it adds 'comment_body' field.
        FieldStorageConfig::create([
            'type' => 'text_long',
            'entity_type' => 'comment',
            'field_name' => 'comment',
        ])->save();
        $this->addDefaultCommentField('node', 'article');
    }
    
    /**
     * Tests if comment module uninstall fails if the field exists.
     */
    public function testCommentUninstallWithField() {
        // Ensure that the field exists before uninstalling.
        $field_storage = FieldStorageConfig::loadByName('comment', 'comment_body');
        $this->assertNotNull($field_storage);
        // Uninstall the comment module which should trigger an exception.
        $this->expectException(ModuleUninstallValidatorException::class);
        $this->expectExceptionMessage('The following reasons prevent the modules from being uninstalled: The <em class="placeholder">Comments</em> field type is used in the following field: node.comment');
        $this->container
            ->get('module_installer')
            ->uninstall([
            'comment',
        ]);
    }
    
    /**
     * Tests if uninstallation succeeds if the field has been deleted beforehand.
     */
    public function testCommentUninstallWithoutField() {
        // Tests if uninstall succeeds if the field has been deleted beforehand.
        // Manually delete the comment_body field before module uninstall.
        FieldStorageConfig::loadByName('comment', 'comment_body')->delete();
        // Check that the field is now deleted.
        $field_storage = FieldStorageConfig::loadByName('comment', 'comment_body');
        $this->assertNull($field_storage);
        // Manually delete the comment field on the node before module uninstall.
        $field_storage = FieldStorageConfig::loadByName('node', 'comment');
        $this->assertNotNull($field_storage);
        $field_storage->delete();
        // Check that the field is now deleted.
        $field_storage = FieldStorageConfig::loadByName('node', 'comment');
        $this->assertNull($field_storage);
        field_purge_batch(10);
        // Ensure that uninstall succeeds even if the field has already been deleted
        // manually beforehand.
        $this->container
            ->get('module_installer')
            ->uninstall([
            'comment',
        ]);
    }

}