/**
* @test
*/
function iteration()
{
$reader = new XMLReaderStub('<!-- comment --><root><child></child></root>');
$it = new XMLChildElementIterator($reader);
$this->assertEquals(false, $it->valid());
$this->assertSame(null, $it->valid());
$it->rewind();
$this->assertEquals(true, $it->valid());
$this->assertEquals('child', $it->current()->getName());
$it->next();
$this->assertEquals(false, $it->valid());
$reader = new XMLReaderStub('<root><none></none><one><child></child></one><none></none></root>');
$base = new XMLElementIterator($reader);
$base->rewind();
$root = $base->current();
$this->assertEquals('root', $root->getName());
$children = $root->getChildElements();
$this->assertEquals('root', $reader->name);
$children->rewind();
$this->assertEquals('none', $reader->name);
$children->next();
$this->assertEquals('one', $reader->name);
$childChildren = new XMLChildElementIterator($reader);
$this->assertEquals('child', $childChildren->current()->getName());
$childChildren->next();
$this->assertEquals(false, $childChildren->valid());
$this->assertEquals('none', $reader->name);
$childChildren->next();
$this->assertEquals('none', $reader->name);
$this->assertEquals(true, $children->valid());
$children->next();
$this->assertEquals(false, $children->valid());
// children w/o descendants
$reader->rewind();
$expected = array('none', 'one', 'none');
$root = $base->current();
$this->assertEquals('root', $root->getName());
$index = 0;
$count = 0;
foreach ($root->getChildElements() as $index => $child) {
$this->assertSame($count++, $index);
$this->assertEquals($expected[$index], $reader->name);
}
$this->assertEquals(count($expected), $count);
// children w/ descendants
$reader->rewind();
$expected = array('none', 'one', 'child', 'none');
$root = $base->current();
$this->assertEquals('root', $root->getName());
$index = 0;
$count = 0;
foreach ($root->getChildElements(null, true) as $index => $child) {
$this->assertSame($count++, $index);
$this->assertEquals($expected[$index], $reader->name);
}
$this->assertEquals(count($expected), $count);
}
/**
* @test
*/
function iterateOverNamedElements()
{
$reader = new XMLReaderStub('<r><a>1</a><a>2</a><b>c</b><a>3</a></r>');
$it = new XMLElementIterator($reader, 'a');
$this->assertEquals(null, $it->valid());
$it->rewind();
$this->assertEquals(true, $it->valid());
$this->assertEquals('a', $it->current()->getName());
$it->next();
$this->assertEquals('a', $it->current()->getName());
$it->next();
$this->assertEquals('a', $it->current()->getName());
$this->assertEquals('3', $it);
$it->next();
$this->assertEquals(false, $it->valid());
}
/**
* @return XMLReaderNode|null
*/
public function current()
{
$this->didRewind || self::rewind();
return parent::current();
}