function testUpdate()
{
//Arrange
$shoe_name = "Nike";
$id = 1;
$test_shoe = new Shoe($shoe_name, $id);
$test_shoe->save();
$new_shoe_name = "Adidas";
//Act
$test_shoe->update($new_shoe_name);
//Assert
$this->assertEquals($new_shoe_name, $test_shoe->getShoeName());
}
