trait AssertLegacyTrait in Drupal 8

trait AssertLegacyTrait {

  /**
   * @see \Drupal\simpletest\TestBase::assert()
   *
   * Deprecated Scheduled for removal in Drupal 10.0.0. Use self::assertTrue()
   *   instead.
   */
  protected function assert($actual, $message = '') {
    parent::assertTrue((bool) $actual, $message);
  }

  /**
   * @see \Drupal\simpletest\TestBase::assertEqual()
   *
   * Deprecated Scheduled for removal in Drupal 10.0.0. Use self::assertEquals()
   *   instead.
   */
  protected function assertEqual($actual, $expected, $message = '') {
    $this
      ->assertEquals($expected, $actual, (string) $message);
  }

  /**
   * @see \Drupal\simpletest\TestBase::assertNotEqual()
   *
   * Deprecated Scheduled for removal in Drupal 10.0.0. Use
   *   self::assertNotEquals() instead.
   */
  protected function assertNotEqual($actual, $expected, $message = '') {
    $this
      ->assertNotEquals($expected, $actual, (string) $message);
  }

  /**
   * @see \Drupal\simpletest\TestBase::assertIdentical()
   *
   * Deprecated Scheduled for removal in Drupal 10.0.0. Use self::assertSame()
   *   instead.
   */
  protected function assertIdentical($actual, $expected, $message = '') {
    $this
      ->assertSame($expected, $actual, (string) $message);
  }

  /**
   * @see \Drupal\simpletest\TestBase::assertNotIdentical()
   *
   * Deprecated Scheduled for removal in Drupal 10.0.0. Use
   *   self::assertNotSame() instead.
   */
  protected function assertNotIdentical($actual, $expected, $message = '') {
    $this
      ->assertNotSame($expected, $actual, (string) $message);
  }

  /**
   * @see \Drupal\simpletest\TestBase::assertIdenticalObject()
   *
   * Deprecated Scheduled for removal in Drupal 10.0.0. Use self::assertEquals()
   *   instead.
   */
  protected function assertIdenticalObject($actual, $expected, $message = '') {

    // Note: ::assertSame checks whether its the same object. ::assertEquals
    // though compares
    $this
      ->assertEquals($expected, $actual, (string) $message);
  }

  /**
   * @see \Drupal\simpletest\TestBase::pass()
   *
   * Deprecated Scheduled for removal in Drupal 10.0.0. Use self::assertTrue()
   *   instead.
   */
  protected function pass($message) {
    $this
      ->assertTrue(TRUE, $message);
  }

  /**
   * @see \Drupal\simpletest\TestBase::verbose()
   */
  protected function verbose($message) {
    if (in_array('--debug', $_SERVER['argv'], TRUE)) {

      // Write directly to STDOUT to not produce unexpected test output.
      // The STDOUT stream does not obey output buffering.
      fwrite(STDOUT, $message . "\n");
    }
  }

}