function test_getId()
{
//Arrange
$book_name = "Gattica";
$book_id = 2;
$test_book = new Book($book_name, $book_id);
$test_book->save();
$author_name = "Aristole";
$author_id2 = 1;
$test_author = new Author($author_name, $author_id2);
$test_author->save();
$author_id = $test_author->getId();
$book_id = $test_book->getId();
$due_date = "2015-08-29";
$id = 3;
$checkout_patron_id = 1;
$test_book_list = new BookList($author_id, $book_id, $due_date, $checkout_patron_id, $id);
$test_book_list->save();
//Act
$result = $test_book_list->getId();
//Assert
$this->assertEquals(true, is_numeric($result));
}
