facebook / facebook-php-sdk-v4

        new Facebook($config);

    }

    public function testMcryptCsprgCanBeForced()

    {

        if (!function_exists('mcrypt_create_iv')) {

            $this->markTestSkipped(

                'Mcrypt must be installed to test mcrypt_create_iv().'

            );

        }

        $config = array_merge($this->config, [

            'persistent_data_handler' => 'memory', // To keep session errors from happening

            'pseudo_random_string_generator' => 'mcrypt'

        ]);

        $fb = new Facebook($config);

        $this->assertInstanceOf(

            'Facebook\PseudoRandomString\McryptPseudoRandomStringGenerator',

            $fb->getRedirectLoginHelper()->getPseudoRandomStringGenerator()

        );

    }

    public function testOpenSslCsprgCanBeForced()

    {

        );

    }

    public function testOpenSslCsprgCanBeForced()

    {

        if (!function_exists('openssl_random_pseudo_bytes')) {

            $this->markTestSkipped(

                'The OpenSSL extension must be enabled to test openssl_random_pseudo_bytes().'

            );

        }

        $config = array_merge($this->config, [

            'persistent_data_handler' => 'memory', // To keep session errors from happening

            'pseudo_random_string_generator' => 'openssl'

        ]);

        $fb = new Facebook($config);

        $this->assertInstanceOf(

            'Facebook\PseudoRandomString\OpenSslPseudoRandomStringGenerator',

            $fb->getRedirectLoginHelper()->getPseudoRandomStringGenerator()

        );

    }

    public function testUrandomCsprgCanBeForced()

    {

        );

    }

    public function testUrandomCsprgCanBeForced()

    {

        if (ini_get('open_basedir')) {

            $this->markTestSkipped(

                'Cannot test /dev/urandom generator due to open_basedir constraint.'

            );

        }

        if (!is_readable('/dev/urandom')) {

            $this->markTestSkipped(

                '/dev/urandom not found or is not readable.'

            );

        }

        $config = array_merge($this->config, [

            'persistent_data_handler' => 'memory', // To keep session errors from happening

            'pseudo_random_string_generator' => 'urandom'

        ]);

        $fb = new Facebook($config);

        $this->assertInstanceOf(

            'Facebook\PseudoRandomString\UrandomPseudoRandomStringGenerator',

            $fb->getRedirectLoginHelper()->getPseudoRandomStringGenerator()

        );

    }

    /**

     * @expectedException \InvalidArgumentException