如何在测试失败时使用PHPUnit和Selenium2捕获屏幕截图？

Question

我正在使用PHPUnit 4.6和PHPUnit Selenium 1.4.2与PhantomJS.当selenium测试失败时,我想捕获最后一页的截图.在PHPUnit Manual中有一个Selenium 1的例子,但我正在尝试使用Selenium 2,因为我需要使用GhostDriver.

WebTestCase.php

class WebTestCase extends PHPUnit_Extensions_Selenium2TestCase
{
    protected $captureScreenshotOnFailure = TRUE;
    protected $screenshotPath = '/../../screenshots';
    protected $screenshotUrl = 'http://localhost:8080/screenshots';

    protected function setUp() {
        $this->setBrowser('phantomjs');
        $this->setBrowserUrl("http://localhost:8080");
        $this->setHost('localhost');
    }
}

test.php的

class Test extends WebTestCase
{

    public function testTitle()
    {
        $this->url('');
        assertEquals($this->title(), "My App");
    }
}

但这不是截图.

$ vendor/bin/phpunit 
PHPUnit 4.6-ge85198b by Sebastian Bergmann and contributors.

Configuration read from /MyApp/phpunit.xml

F

Time: 231 ms, Memory: 5.50Mb

There was 1 failure:

1) Test::testTitle
Failed asserting that two strings are equal.
--- Expected
+++ Actual
@@ @@
-''
+'My App'

/MyApp/tests/functional/Test.php:7

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

Answer 1

结合@Jens A. Koch和@John Joseph的解决方案,我们得到了这个:

<?php

class homepageTest extends PHPUnit_Extensions_Selenium2TestCase {

    private $listener;

    public function setUp() {

        // Your screenshots will be saved in '/var/www/vhosts/screenshots/'
        $screenshots_dir = '/var/www/vhosts/screenshots/';

        $this->listener = new PHPUnit_Extensions_Selenium2TestCase_ScreenshotListener($screenshots_dir);

        $this->setBrowser('firefox');
        $this->setBrowserUrl('https://netbeans.org');
    }

    public function tearDown() {
        $this->stop();
    }

    public function testNetbeansContainsHorses() {
        $this->url('https://netbeans.org');
        $this->assertContains('Equestrian', $this->title()); // Will fail on NetBeans page.
    }


    public function onNotSuccessfulTest($e) {
        $this->listener->addError($this, $e, null);        
        parent::onNotSuccessfulTest($e);
    }
}

Answer 2

嗯.SeleniumTestCase和Selenium2TestCase之间的区别在PHPUnit手册中没有很好的记录.对于Selenium2,常见案例也没有明确的分离和充分的使用示例.

PHPUnit_Extensions_Selenium2TestCase上不存在$ captureScreenshotOnFailure .

无论如何,让我们尝试将它们组合在一起:

<?php
class Test extends PHPUnit_Extensions_Selenium2TestCase
{

    protected function setUp() {
        $this->setBrowser('phantomjs');
        $this->setBrowserUrl("http://localhost:8080");
        $this->setHost('localhost');
    }

    public function testEnterText()
    {
        $this->url("/");

        try {

            $this->assertEquals($this->title(), "My App");

        } catch (Exception $e) {

            $this->screenshot( __DIR__.'/'.$this->getName().'-'.time(). '.png');    
        }
    }

    public function screenshot($file) 
    {
        $filedata = $this->currentScreenshot();
        file_put_contents($file, $filedata);
    }
}

try-catch-block:在try部分中断言完成,如果断言失败,则捕获异常.catch-block让我们有机会(抓住异常的详细信息或重新抛出它或者)制作屏幕截图.

主要功能是$ this-> currentScreenshot(),在此测试中使用 https://github.com/giorgiosironi/phpunit-selenium/blob/master/Tests/Selenium2TestCaseTest.php#L733

ScreenshotListener

请注意,有一个ScreenshotListener,可能值得一看:https: //github.com/giorgiosironi/phpunit-selenium/blob/master/PHPUnit/Extensions/Selenium2TestCase/ScreenshotListener.php

有关使用示例,请访问https://github.com/giorgiosironi/phpunit-selenium/blob/master/Tests/Selenium2TestCase/ScreenshotListenerTest.php

这可能是一个更清晰的实现,以抓住测试失败和拍摄.