PHPUnit 和 Mock 对象不起作用

Question

我不确定是我做错了什么，还是 PHPUnit 和模拟对象的错误。基本上我想测试是否 $Model->doSomething()在 $Model->start() 时调用被触发。

我在 VirtualBox 中使用 Ubuntu，并通过 pear 安装了 phpunit 1.1.1。

完整代码如下。任何帮助将不胜感激，这让我发疯。

<?php
require_once 'PHPUnit/Autoload.php';

class Model
{
    function doSomething( ) {
        echo 'Hello World';
    }

    function doNothing( ) { }

    function start( ) {
        $this->doNothing();
        $this->doSomething();
    }
}

class ModelTest extends PHPUnit_Framework_TestCase
{
    function testDoSomething( )
    {
        $Model = $this->getMock('Model');
        $Model->expects($this->once())->method('start'); # This works
        $Model->expects($this->once())->method('doSomething'); # This does not work
        $Model->start();
    }
}
?>

PHPUnit的输出:

There was 1 failure:

1) ModelTest::testDoSomething
Expectation failed for method name is equal to <string:doSomething> when invoked 1 time(s).
Method was expected to be called 1 times, actually called 0 times.


FAILURES!
Tests: 1, Assertions: 1, Failures: 1.

Answer 1

正如您所发现的，您需要告诉 PHPUnit 要模拟哪些方法。此外，我会避免为您直接从测试中调用的方法创建期望。我会这样写上面的测试:

function testDoSomething( )
{
    $Model = $this->getMock('Model', array('doSomething');
    $Model->expects($this->once())->method('doSomething');
    $Model->start();
}