DefaultConfigTest::testSandboxedStringsMimicStrings PHP Method

    public function testSandboxedStringsMimicStrings()
    {
        $this->sandbox->whitelistFunc(array('is_string', 'is_object', 'is_scalar'));
        $this->assertEquals(true, $this->sandbox->execute(function () {
            return is_string("system");
        }));
        $this->assertEquals(false, $this->sandbox->execute(function () {
            return is_object("system");
        }));
        $this->assertEquals(true, $this->sandbox->execute(function () {
            return is_scalar("system");
        }));
    }