PHPUnit and Globals

Question

I am learning and exploring applications of PHPUnit with PHP 5.2.9 and have run into the globals issue. I have set $backupGlobals to FALSE, included the doc '@backupGlobals disabled' and this doesn't seem to affect the behaviour of PHPUnit's backing up of the globals. Is there something I'm missing? Do I need to alter PHPUnit's xml file? Create a bootstrap?

config.php:

$testString = 'Hello world!';

basicApp.php:

require ('D:\data\clients\security.ca\web_sites\QRASystems.com\wwwroot\__tests\BasicApp\config.php');

class BasicApp {

public $test;

public function __construct() {
    global $testString;
    $this->test = $testString;
}

public function getTest() {
    return $this->test;
}

public function setTest($test){
    $this->test = $test;
}

BasicAppTest.php:

require ('D:\data\clients\security.ca\web_sites\QRASystems.com\wwwroot\__tests\BasicApp\BasicApp.php');

class BasicAppTest extends PHPUnit_Framework_TestCase{
    protected $testClass;
    protected $backupGlobals = FALSE;
    protected $backupGlobalsBlacklist = array('testString');

    public function SetUp(){
        $this->testClass = new BasicApp;
        $this->testClass->bootstrap();
    }

    public function testGlobal(){
        echo $this->testClass->getTest();
        $this->assertNotNull($this->backupGlobals);
        $this->assertFalse($this->backupGlobals);
        $this->assertNotEmpty($this->testClass->test);
    }

    public function testMethods(){
        $this->testClass->setTest('Goodbye World!');
        echo $this->testClass->getTest();
        $this->assertNotNull($this->backupGlobals);
        $this->assertNotNull($this->testClass->test);
        if (empty($this->testClass->test)) echo 'Method set failed!';
    }
}

testGlobal() fails on $this->assertNotEmpty($this->testClass->test), indicating that $this->backupGlobals is set to FALSE and that globals are still being back up by PHPUnit.

EDIT: I got this working by making the following changes-

BasicAppTest.php:

    protected $backupGlobals = FALSE; <- REMOVED
    protected $backupGlobalsBlacklist = array('testString');  <- REMOVED

config.php:

global $testString; <- ADDED
$testString = 'Hello world!';

I am dumbfounded that this hasn't been covered before somewhere!

Answer 1

In your test case you are defining a new $backupGlobals property that PHPUnit won't see. Since the property is protected, you could set it to false in the constructor, but PHPUnit uses its constructors to pass information on how to run the test method. Instead, create a phpunit.xml configuration file to set the backupGlobals property to false.

<phpunit backupGlobals="false">
    <testsuites>
        <testsuite name="Test">
            <directory>.</directory>
        </testsuite>
    </testsuites>
</phpunit>