ForumUninstallTest.php

<?php

namespace Drupal\Tests\forum\Functional;

use Drupal\comment\CommentInterface;
use Drupal\field\Entity\FieldStorageConfig;
use Drupal\node\Entity\NodeType;
use Drupal\comment\Entity\Comment;
use Drupal\taxonomy\Entity\Term;
use Drupal\taxonomy\Entity\Vocabulary;
use Drupal\Tests\BrowserTestBase;

/**
 * Tests forum module uninstallation.
 *
 * @group forum
 */
class ForumUninstallTest extends BrowserTestBase {
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'forum',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Tests if forum module uninstallation properly deletes the field.
     */
    public function testForumUninstallWithField() {
        $this->drupalLogin($this->drupalCreateUser([
            'administer taxonomy',
            'administer nodes',
            'administer modules',
            'delete any forum content',
            'administer content types',
        ]));
        // Ensure that the field exists before uninstallation.
        $field_storage = FieldStorageConfig::loadByName('node', 'taxonomy_forums');
        $this->assertNotNull($field_storage, 'The taxonomy_forums field storage exists.');
        // Create a taxonomy term.
        $term = Term::create([
            'name' => 'A term',
            'langcode' => \Drupal::languageManager()->getDefaultLanguage()
                ->getId(),
            'description' => '',
            'parent' => [
                0,
            ],
            'vid' => 'forums',
            'forum_container' => 0,
        ]);
        $term->save();
        // Create a forum node.
        $node = $this->drupalCreateNode([
            'title' => 'A forum post',
            'type' => 'forum',
            'taxonomy_forums' => [
                [
                    'target_id' => $term->id(),
                ],
            ],
        ]);
        // Create at least one comment against the forum node.
        $comment = Comment::create([
            'entity_id' => $node->nid->value,
            'entity_type' => 'node',
            'field_name' => 'comment_forum',
            'pid' => 0,
            'uid' => 0,
            'status' => CommentInterface::PUBLISHED,
            'subject' => $this->randomMachineName(),
            'hostname' => '127.0.0.1',
        ]);
        $comment->save();
        // Attempt to uninstall forum.
        $this->drupalGet('admin/modules/uninstall');
        // Assert forum is required.
        $this->assertSession()
            ->fieldDisabled('uninstall[forum]');
        $this->assertSession()
            ->pageTextContains('To uninstall Forum, first delete all Forum content');
        // Delete the node.
        $this->drupalGet('node/' . $node->id() . '/delete');
        $this->submitForm([], 'Delete');
        // Attempt to uninstall forum.
        $this->drupalGet('admin/modules/uninstall');
        // Assert forum is still required.
        $this->assertSession()
            ->fieldDisabled('uninstall[forum]');
        $this->assertSession()
            ->pageTextContains('To uninstall Forum, first delete all Forums terms');
        // Delete any forum terms.
        $vid = $this->config('forum.settings')
            ->get('vocabulary');
        $storage = \Drupal::entityTypeManager()->getStorage('taxonomy_term');
        $terms = $storage->loadByProperties([
            'vid' => $vid,
        ]);
        $storage->delete($terms);
        // Ensure that the forum node type can not be deleted.
        $this->drupalGet('admin/structure/types/manage/forum');
        $this->assertSession()
            ->linkNotExists('Delete');
        // Now attempt to uninstall forum.
        $this->drupalGet('admin/modules/uninstall');
        // Assert forum is no longer required.
        $this->assertSession()
            ->fieldExists('uninstall[forum]');
        $this->drupalGet('admin/modules/uninstall');
        $this->submitForm([
            'uninstall[forum]' => 1,
        ], 'Uninstall');
        $this->submitForm([], 'Uninstall');
        // Check that the field is now deleted.
        $field_storage = FieldStorageConfig::loadByName('node', 'taxonomy_forums');
        $this->assertNull($field_storage, 'The taxonomy_forums field storage has been deleted.');
        // Check that a node type with a machine name of forum can be created after
        // uninstalling the forum module and the node type is not locked.
        $edit = [
            'name' => 'Forum',
            'title_label' => 'title for forum',
            'type' => 'forum',
        ];
        $this->drupalGet('admin/structure/types/add');
        $this->submitForm($edit, 'Save content type');
        $this->assertTrue((bool) NodeType::load('forum'), 'Node type with machine forum created.');
        $this->drupalGet('admin/structure/types/manage/forum');
        $this->clickLink('Delete');
        $this->submitForm([], 'Delete');
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertFalse((bool) NodeType::load('forum'), 'Node type with machine forum deleted.');
        // Double check everything by reinstalling the forum module again.
        $this->drupalGet('admin/modules');
        $this->submitForm([
            'modules[forum][enable]' => 1,
        ], 'Install');
        $this->assertSession()
            ->pageTextContains('Module Forum has been enabled.');
    }
    
    /**
     * Tests uninstallation if the field storage has been deleted beforehand.
     */
    public function testForumUninstallWithoutFieldStorage() {
        // Manually delete the taxonomy_forums field before module uninstallation.
        $field_storage = FieldStorageConfig::loadByName('node', 'taxonomy_forums');
        $this->assertNotNull($field_storage, 'The taxonomy_forums field storage exists.');
        $field_storage->delete();
        // Check that the field is now deleted.
        $field_storage = FieldStorageConfig::loadByName('node', 'taxonomy_forums');
        $this->assertNull($field_storage, 'The taxonomy_forums field storage has been deleted.');
        // Delete all terms in the Forums vocabulary. Uninstalling the forum module
        // will fail unless this is done.
        $terms = \Drupal::entityTypeManager()->getStorage('taxonomy_term')
            ->loadByProperties([
            'vid' => 'forums',
        ]);
        foreach ($terms as $term) {
            $term->delete();
        }
        // Ensure that uninstallation succeeds even if the field has already been
        // deleted manually beforehand.
        $this->container
            ->get('module_installer')
            ->uninstall([
            'forum',
        ]);
    }
    
    /**
     * Tests uninstallation of forum module when vocabulary is deleted.
     */
    public function testForumUninstallWithoutForumVocabulary() {
        $this->drupalLogin($this->rootUser);
        Vocabulary::load('forums')->delete();
        // Now attempt to uninstall forum.
        $this->drupalGet('admin/modules/uninstall');
        $this->assertSession()
            ->responseNotContains('The website encountered an unexpected error. Please try again later');
        $this->assertSession()
            ->statusCodeEquals(200);
        // Assert forum is no longer required.
        $this->assertSession()
            ->fieldExists('uninstall[forum]');
        $this->drupalGet('admin/modules/uninstall');
        $this->submitForm([
            'uninstall[forum]' => 1,
        ], 'Uninstall');
    }

}