BlockInvalidRegionTest.php

<?php

namespace Drupal\Tests\block\Functional;

use Drupal\Tests\BrowserTestBase;
use Drupal\block\Entity\Block;

/**
 * Tests that an active block assigned to a non-existing region triggers the
 * warning message and is disabled.
 *
 * @group block
 */
class BlockInvalidRegionTest extends BrowserTestBase {
    
    /**
     * Modules to install.
     *
     * @var array
     */
    public static $modules = [
        'block',
        'block_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'classy';
    protected function setUp() {
        parent::setUp();
        // Create an admin user.
        $admin_user = $this->drupalCreateUser([
            'administer site configuration',
            'access administration pages',
            'administer blocks',
        ]);
        $this->drupalLogin($admin_user);
    }
    
    /**
     * Tests that blocks assigned to invalid regions work correctly.
     */
    public function testBlockInInvalidRegion() {
        // Enable a test block and place it in an invalid region.
        $block = $this->drupalPlaceBlock('test_html');
        \Drupal::configFactory()->getEditable('block.block.' . $block->id())
            ->set('region', 'invalid_region')
            ->save();
        $block = Block::load($block->id());
        $warning_message = t('The block %info was assigned to the invalid region %region and has been disabled.', [
            '%info' => $block->id(),
            '%region' => 'invalid_region',
        ]);
        // Clearing the cache should disable the test block placed in the invalid region.
        $this->drupalPostForm('admin/config/development/performance', [], 'Clear all caches');
        $this->assertRaw($warning_message, 'Enabled block was in the invalid region and has been disabled.');
        // Clear the cache to check if the warning message is not triggered.
        $this->drupalPostForm('admin/config/development/performance', [], 'Clear all caches');
        $this->assertNoRaw($warning_message, 'Disabled block in the invalid region will not trigger the warning.');
        // Place disabled test block in the invalid region of the default theme.
        \Drupal::configFactory()->getEditable('block.block.' . $block->id())
            ->set('region', 'invalid_region')
            ->save();
        $block = Block::load($block->id());
        // Clear the cache to check if the warning message is not triggered.
        $this->drupalPostForm('admin/config/development/performance', [], 'Clear all caches');
        $this->assertNoRaw($warning_message, 'Disabled block in the invalid region will not trigger the warning.');
    }

}