Issue #2780203: Add module reinstall test.

<?php

namespace Drupal\Tests\blog\Functional;

use Drupal\Tests\BrowserTestBase;

/**

 * Test for blog module install and uninstall.

 *

 * @group blog

 */

class InstallUninstallTest extends BrowserTestBase {

  /**

   * {@inheritdoc}

   */

  protected $defaultTheme = 'stark';

  /**

   * The module installer service.

   *

   * @var \Drupal\Core\Extension\ModuleInstallerInterface

   */

  private $moduleInstaller;

  /**

   * {@inheritdoc}

   */

  protected function setUp(): void {

    parent::setUp();

    $this->moduleInstaller = \Drupal::service('module_installer');

  }

  /**

   * Tests module re-install.

   */

  public function testReinstall() {

    $this->moduleInstaller->install(['blog']);

    $problems = $this->moduleInstaller->validateUninstall(['blog']);

    $this::assertEmpty($problems);

    $this->moduleInstaller->uninstall(['blog']);

    // Blog module reinstall.

    $this->moduleInstaller->install(['blog']);

    $problems = $this->moduleInstaller->validateUninstall(['blog']);

    $this::assertEmpty($problems);

    $this->moduleInstaller->uninstall(['blog']);

  }

}