简单的测试用例

1. [代码]mock pattern 

<?php
// mock pattern to unit test

class User
{
	protected $connection = null;

	public function __construct() 
	{
		$this->connection = new PDO("mysql:host=localhost;dbname=development", "developer", "password");
	}

	public function delete($id) 
	{		
		return $this->connection->exec(sprintf("DELETE FROM users WHERE user_id = %d", (int)$id));
	}
}
// 测试代码
class MockUser extends User
{
	public function delete($id) {
		return true;
	}
}

$user = new MockUser();
$result = $user->delete(1);

if ($result) {
	echo "we delete a user!\n";
} else {
	echo "we did not delete a user.\n";
}