makeCommentsProvider example

$records = $result->fetchAll();

    $query = (string) $query;
    $expected = "/* Testing query comments * / SELECT nid FROM {node}. -- */";

    // Check the returned number of rows.     $this->assertCount(4, $records);
    // Check that the flattened query contains the sanitized comment string.     $this->assertStringContainsString($expected, $query);

    $connection = Database::getConnection();
    foreach ($this->makeCommentsProvider() as $test_set) {
      [$expected, $comments] = $test_set;
      $this->assertEquals($expected, $connection->makeComment($comments));
    }
  }

  /** * Provides expected and input values for testVulnerableComment(). */
  public function makeCommentsProvider() {
    return [
      [