function testGetPatron()
{
//Arrange
$book_id = 1;
$id = 1;
$test_copy = new Copy($book_id, $id);
$test_copy->save();
$name = "Ping Pong";
$id2 = 1;
$test_patron = new Patron($name, $id2);
$test_patron->save();
$name2 = "Ding Dong";
$id3 = 2;
$test_patron2 = new Patron($name2, $id3);
$test_patron2->save();
//Act
$test_copy->addPatron($test_patron->getId());
$test_copy->addPatron($test_patron2->getId());
//Assert
$this->assertEquals($test_copy->getPatron(), [$test_patron, $test_patron2]);
}
