public function testIteratorInterfaceSkipEmpty()
{
$content = "line1\n\nline2";
$url = vfsStream::newFile('test.txt')->withContent($content)->at($this->_root)->url();
$fileObject = new FileObject($url, 'r');
$fileObject->setFlags(\SplFileObject::DROP_NEW_LINE | \SplFileObject::SKIP_EMPTY | \SplFileObject::READ_AHEAD);
$fileObject->rewind();
$this->assertTrue($fileObject->valid());
$this->assertEquals("line1", $fileObject->current());
$this->assertSame(0, $fileObject->key());
$fileObject->next();
$this->assertTrue($fileObject->valid());
$this->assertEquals('line2', $fileObject->current());
$this->assertSame(1, $fileObject->key());
$fileObject->next();
// Beyond EOF
$this->assertFalse($fileObject->valid());
$this->assertFalse($fileObject->current());
$this->assertSame(2, $fileObject->key());
$fileObject->rewind();
$this->assertTrue($fileObject->valid());
$this->assertEquals("line1", $fileObject->current());
$this->assertSame(0, $fileObject->key());
}
