$this->assertNoText(t('Security update required!'));
$this->assertRaw(\Drupal::l("8.$minor_version.1" . $extra_version, Url::fromUri("http://example.com/drupal-8-$minor_version-1$extra_version-release")), 'Link to release appears.');
$this->assertRaw(\Drupal::l(t('Download'), Url::fromUri("http://example.com/drupal-8-$minor_version-1$extra_version.tar.gz")), 'Link to download appears.');
$this->assertNoText(t('Security update required!'));
$this->assertRaw(\Drupal::l("8.$minor_version.1" . $extra_version, Url::fromUri("http://example.com/drupal-8-$minor_version-1$extra_version-release")), 'Link to release appears.');
$this->assertRaw(\Drupal::l(t('Download'), Url::fromUri("http://example.com/drupal-8-$minor_version-1$extra_version.tar.gz")), 'Link to download appears.');