DotsUnited\BundleFu\Tests\BundleTest::testCastingToStringShouldNotThrowException PHP Method

    public function testCastingToStringShouldNotThrowException()
    {
        //$this->setExpectedException('\PHPUnit_Framework_Error_Warning');
        $callback = function ($content) {
            throw new \Exception('Test');
        };
        $this->bundle->setCssFilter(new CallbackFilter($callback));
        $this->bundle->setJsFilter(new CallbackFilter($callback));
        $this->bundle->start();
        echo $this->includeAll();
        $this->bundle->end();
        $this->assertEquals('', @$this->bundle->__toString());
    }