class DevelQueryDebugTest

class DevelQueryDebugTest extends KernelTestBase {
    use MessengerTrait;
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'devel',
        'system',
        'user',
    ];
    
    /**
     * The user used in test.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $develUser;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->installSchema('system', 'sequences');
        $this->installConfig([
            'system',
            'devel',
        ]);
        $this->installEntitySchema('user');
        $devel_role = Role::create([
            'id' => 'admin',
            'label' => 'Admin',
            'permissions' => [
                'access devel information',
            ],
        ]);
        $devel_role->save();
        $this->develUser = User::create([
            'name' => $this->randomMachineName(),
            'roles' => [
                $devel_role->id(),
            ],
        ]);
        $this->develUser
            ->save();
    }
    
    /**
     * Tests devel_query_debug_alter() for select queries.
     */
    public function testSelectQueryDebugTag() : void {
        // Clear the messages stack.
        $this->getDrupalMessages();
        // Ensures that no debug message is shown to user without the adequate
        // permissions.
        $query = \Drupal::database()->select('users', 'u');
        $query->fields('u', [
            'uid',
        ]);
        $query->addTag('debug');
        $query->execute();
        $messages = $this->getDrupalMessages();
        $this->assertEmpty($messages);
        // Ensures that the SQL debug message is shown to user with the adequate
        // permissions. We expect only one status message containing the SQL for
        // the debugged query.
        \Drupal::currentUser()->setAccount($this->develUser);
        $expected_message = '
SELECT u.uid AS uid\\n
FROM\\n
{users} u

';
        $query = \Drupal::database()->select('users', 'u');
        $query->fields('u', [
            'uid',
        ]);
        $query->addTag('debug');
        $query->execute();
        $messages = $this->getDrupalMessages();
        $this->assertNotEmpty($messages['status']);
        $this->assertCount(1, $messages['status']);
        $actual_message = strip_tags($messages['status'][0]);
        // In Drupal 9 the literals are quoted, but not in Drupal 8. We only need
        // the actual content, so remove all quotes from the actual message found.
        $actual_message = str_replace([
            '"',
            "'",
        ], [
            '',
            '',
        ], $actual_message);
        $this->assertEquals($expected_message, $actual_message);
    }
    
    /**
     * Tests devel_query_debug_alter() for entity queries.
     */
    public function testEntityQueryDebugTag() : void {
        // Clear the messages stack.
        $this->getDrupalMessages();
        // Ensures that no debug message is shown to user without the adequate
        // permissions.
        $query = \Drupal::entityQuery('user')->accessCheck(FALSE);
        $query->addTag('debug');
        $query->execute();
        $messages = $this->getDrupalMessages();
        $this->assertEmpty($messages);
        // Ensures that the SQL debug message is shown to user with the adequate
        // permissions. We expect only one status message containing the SQL for
        // the debugged entity query.
        \Drupal::currentUser()->setAccount($this->develUser);
        $expected_message = '
SELECT base_table.uid AS uid, base_table.uid AS base_table_uid\\n
FROM\\n
{users} base_table

';
        $query = \Drupal::entityQuery('user')->accessCheck(FALSE);
        $query->addTag('debug');
        $query->execute();
        $messages = $this->getDrupalMessages();
        $this->assertNotEmpty($messages['status']);
        $this->assertCount(1, $messages['status']);
        $actual_message = strip_tags($messages['status'][0]);
        $actual_message = str_replace([
            '"',
            "'",
        ], [
            '',
            '',
        ], $actual_message);
        $this->assertEquals($expected_message, $actual_message);
    }
    
    /**
     * Retrieves and removes the drupal messages.
     *
     * @return array
     *   The messages
     */
    protected function getDrupalMessages() {
        return $this->messenger()
            ->deleteAll();
    }

}