如何使用PHPUnit对异常进行单元测试? [英] How to unit test Exceptions with PHPUnit?

问题描述

我不了解如何使用PHPUnit进行单元测试异常.

I'm not getting how to unit test Exceptions with PHPUnit.

请查看带有异常的我的方法:

Please see my method with the Exception:

    public function getPhone($html, $tag = 'OFF', $indicative, $number_lenght) {

        // .. code

        if ($tag <> 'OFF') {

            $html = $doc[$tag]->text(); // Apanho apenas o texto dentro da TAG
                if (empty($html)) {
                    throw new Exception("Nao foi possivel apanhar qualquer texto dentro da TAG, Metodo em causa: getPhone()");
                }               
        }

        // .. code
    }

现在是我的PHPUnit测试:

And now my PHPUnit Test:

<?php

require_once '../Scrap.php';

class ScrapTest extends PHPUnit_Framework_TestCase
{

    protected $scrap;

    // Setup function to instantiate de object to $this->scrap
    protected function setUp()
    {
        $this->scrap = new Scrap;
    }

    /**
    * @covers Scrap::getPhone
    * @expectedException Exception
    *
    */
    public function testGetPhone() {

        // Variables1
        $array_static1 = Array(0 => 218559372, 1 => 927555929, 2 => 213456789, 3 => 912345678);
        $phone_list1   = '</div>A Front para<br /><br /><br /><br /><br /><br />-Apoio;<br />-Criação;<br />-Campanhas;<br />-Promoções<br /><br /><br />CONDIÇÕES:<br /><br />Local de Trabalho: Es<br />Folgas: Mistas<br /><br /><br /><br />ordem 500€<br /><br /><br /><br />Mínimos:<br /><br />- Conhecimentos;<br />- Ensino ;<br />-INGLÊS.<br /><br /><br /><br />Candidaturas: <br />[e-mail]<br />218559372 | 927 555 929 | <br />RH<br />Rua C. Sal. 40<br />1000-000 Lisboa<br /><br /><br />[phone] | (351) 912345678';

        // Variables2
        $array_static2 = Array(0 => 'NA');
        $phone_list2   = "";

        // .. more tests

        // Test Exception, Tag not found
        if (TRUE) {

            // Bloco try/catch para confirmar que aqui lança excepção
            try {            
                    $this->scrap->getPhone($phone_list1, 'hr', '351', '9');        
                }         
            catch (Exception $expected) {
                    return;        
                }         

            $this->fail('An expected exception has not been raised.');  
        }



    }
}
?>

如果我运行测试，则显示失败":

If I run the test I got "Failure":

1) ScrapTest::testGetPhone
Expected exception Exception

FAILURES!
Tests: 1, Assertions: 5, Failures: 1.

引发异常，但我不想在PHPUnit中失败，如果引发异常，我想使测试正常.

The exception raises but I don't want to get failure in the PHPUnit, If the Exception raise, I want to get the test OK.

能给我一些线索吗?

最好的问候，

推荐答案

您在那里做得太多.

任何一个使用:@expectedException异常

Either use: @expectedException Exception

OR :尝试/捕获/$ this->失败

OR: try / catch / $this->fail

您现在的操作方式是捕获该异常，然后期望代码抛出另一个异常！"

The way you are doing it right now says "catch that exception and THEN expect the code to throw another one!"

在我看来，第一种方法更干净，因为对于5行(甚至更多行)的代码来说，它只有1行，而且出错的可能性也较小.

The first way is cleaner in my opinion because it's only 1 line against 5 (or even more) lines of code and it's less error prone.

/**
* @covers Scrap::getPhone
* @expectedException Exception
*
*/
public function testGetPhone() {

    // Variables1
    $array_static1 = Array(0 => 218559372, 1 => 927555929, 2 => 213456789, 3 => 912345678);
    $phone_list1   = '...';

    // Variables2
    $array_static2 = Array(0 => 'NA');
    $phone_list2   = "";

    // .. more tests

    // Bloco try/catch para confirmar que aqui lança excepção
    $this->scrap->getPhone($phone_list1, 'hr', '351', '9');        

应该这样做.

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