软断言和模拟方法测试失败

我遵循这个教程:http://jtreminio.com/2013/03/unit-testing-tutorial-part-5-mock-methods-and-overriding-constructors/。这是一个学习PHPUnit工作原理的好教程。

但是我不能理解，因为考试没有通过。

失败是:

Method was expected to be called 1 times, actually called 0 times.

这部分代码:

        $badCode->expects($this->once())
            ->method('checkPassword')
            ->with($password);

但是这是不可能的，因为下一个软断言在checkPassword方法中运行并且通过了测试。

        $badCode->expects($this->once())
            ->method('callExit');

它失败了，因为是一个模拟方法和行为是不同的?还是代码有问题?

为了便于理解，我附上了所有的文件，这是一个小的例子。

PHPUnit 3.7.18 by Sebastian Bergmann.
FYOU SHALL NOT PASS............
Time: 0 seconds, Memory: 6.00Mb
There was 1 failure:
1) phpUnitTutorial'Test'BadCodeTest::testAuthorizeExitsWhenPasswordNotSet
Expectation failed for method name is equal to <string:checkPassword> when invoked 1 time(s).
Method was expected to be called 1 times, actually called 0 times.

FAILURES!
Tests: 13, Assertions: 14, Failures: 1.

BadCode.php

<?php
namespace phpUnitTutorial;
class BadCode
{
    protected $user;
    public function __construct(array $user)
    {
        $this->user = $user;
    }
    public function authorize($password)
    {
        if ($this->checkPassword($password)) {
            return true;
        }
        return false;
    }
    protected function checkPassword($password)
    {
        if (empty($user['password']) || $user['password'] !== $password) {
            echo 'YOU SHALL NOT PASS';
            $this->callExit();
        }
        return true;
    }
    protected function callExit()
    {
        exit;
    }
}

BadCodeTest.php

<?php
namespace phpUnitTutorial'Test;
class BadCodeTest extends 'PHPUnit_Framework_TestCase
{
    public function testAuthorizeExitsWhenPasswordNotSet()
    {
        $user = array('username' => 'jtreminio');
        $password = 'foo';
        $badCode = $this->getMockBuilder('phpUnitTutorial'BadCode')
            ->setConstructorArgs(array($user))
            ->setMethods(array('callExit'))
            ->getMock();
        $badCode->expects($this->once())
            ->method('checkPassword')
            ->with($password);
        $badCode->expects($this->once())
            ->method('callExit');
        $this->expectOutputString('YOU SHALL NOT PASS');
        $badCode->authorize($password);
    }
}

有人能帮帮我吗?谢谢!

博客的作者用解决方案更新了教程。不能对模拟方法做任何断言，只能做存根。

BadCode.php

<?php
namespace phpUnitTutorial;
class BadCode
{
    protected $user;
    public function __construct(array $user)
    {
        $this->user = $user;
    }
    public function authorize($password)
    {
        if ($this->checkPassword($password)) {
            return true;
        }
        return false;
    }
    protected function checkPassword($password)
    {
        if (empty($this->user['password']) || $this->user['password'] !== $password) {
            echo 'YOU SHALL NOT PASS';
            $this->callExit();
        }
        return true;
    }
    protected function callExit()
    {
        exit;
    }
}

BadCodeTest.php

<?php
namespace phpUnitTutorial'Test;
class BadCodeTest extends 'PHPUnit_Framework_TestCase
{
    public function testAuthorizeExitsWhenPasswordNotSet()
    {
        $user = array('username' => 'jtreminio');
        $password = 'foo';
        $badCode = $this->getMockBuilder('phpUnitTutorial'BadCode')
            ->setConstructorArgs(array($user))
            ->setMethods(array('callExit'))
        $badCode->expects($this->once())
            ->method('callExit');
        $this->expectOutputString('YOU SHALL NOT PASS');
        $badCode->authorize($password);
    }
}