php – 函数外部的变量中不允许表达式

我想将目录链接到$screenshotPath字符串,但PHPStorm中出现错误：表达式不允许作为字段默认值.我该如何解决？码：

use PHPUnit\Extensions\SeleniumTestCase;
use ApplicationTest\Bootstrap;

class AdminLoginlogoutTest extends PHPUnit_Extensions_SeleniumTestCase {
    protected $captureScreenshotOnFailure = true;
    //$screenshotPath is giving me this error...
    protected $screenshotPath = __DIR__ . "/FailedTestsScreenshots";
    protected $screenshotUrl = "http://icho/screenshots";

    protected $path = "http://icho";

    protected function SetUp() {
        $this->setbrowser( "*firefox" );
        $this->SetbrowserUrl( $this->path );
    }

    public function testAdminLoginlogout() {
        $this->open( "/admin" );
        $this->type( "name=username", "test" );
        $this->type( "name=password", "test" );
        $this->click( "id=submitbutton" );
        $this->waitForPagetoLoad( "30000" );
        $this->assertEquals( "Dashboard", $this->getText( "link=Dashboard" ) );
        $this->assertEquals( "Haios", $this->getText( "link=Haios" ) );
        $this->assertEquals( "POs", $this->getText( "link=POs" ) );
        $this->assertEquals( "Staco's", $this->getText( "link=Staco's" ) );
        $this->assertEquals( "Mail templates", $this->getText( "link=Mail templates" ) );
        $this->assertEquals( "Mailings", $this->getText( "link=Mailings" ) );
        $this->assertEquals( "Sytem texts", $this->getText( "link=System texts" ) );
        $this->assertEquals( "Advanced admin", $this->getText( "link=Advanced admin" ) );
        $this->click( "css=a[title='Sign Out']" );
        $this->click( "id=bot2-Msg1" );
        $this->waitForPagetoLoad( "30000" );
        $this->assertEquals( "Login is vereist", $this->getText( "css=h2" ) );
    }
}

解决方法:

将它移动到构造函数(或任何其他函数) – 您似乎没有该类的任何构造函数,但无论如何都将调用__construct：

protected $screenshotPath = '';

public function __construct() {
    $this->$screenshotPath = __DIR__ . "/FailedTestsScreenshots";
}

或者进入SetUp()：

protected function SetUp() {
    $this->$screenshotPath = __DIR__ . "/FailedTestsScreenshots";
    $this->setbrowser( "*firefox" );
    $this->SetbrowserUrl( $this->path );
}

原文地址：https://codeday.me/bug/20190623/1275150.html