function test_delete()
{
//Arrange
$checked_in_status = 0;
$due_date = "2000 BC";
$copy_id = 4;
$patron_id = 4;
$test_checkout = new Checkout($checked_in_status, $due_date, $copy_id, $patron_id);
$test_checkout->save();
//Act
$test_checkout->delete();
$result = Checkout::getAll();
//Assert
$this->assertEquals([], $result);
}
function test_delete()
{
//Arrange
$copy_id = 1;
$patron_id = 4;
$due_date = "2015-09-03";
$test_checkout = new Checkout($copy_id, $patron_id, $due_date);
$test_checkout->save();
$copy_id2 = 2;
$patron_id2 = 1;
$due_date2 = "2015-10-05";
$test_checkout2 = new Checkout($copy_id2, $patron_id2, $due_date2);
$test_checkout2->save();
//Act
$test_checkout->delete();
//Assert
$result = Checkout::getAll();
$this->assertEquals([$test_checkout2], $result);
}