public function testSetValuesSafeAllowsRelations()
 {
     $book = new Book($this->conn);
     $author = new Author($this->conn, ['id' => 1]);
     $book->setValuesSafe(['id' => 34, 'name' => 'Far From The Madding Crowd', 'author' => $author]);
     $this->assertSame(['name' => 'Far From The Madding Crowd', 'authors_id' => 1], $book->getValues());
     $this->assertSame($author, $book->author);
 }