public function testFnToLower()
{
$fn = FnString::fnToLower();
$this->assertEquals('hello', $fn('HELLO'));
$fn = FnString::fnToLower('UTF-8');
$this->assertEquals('hello', $fn('HELLO'));
$this->assertEquals('hellö', $fn('HELLÖ'));
$this->assertNotEquals(strtolower('HELLÖ'), $fn('HELLÖ'));
}
/**
* @return TraverseSequence|MappedSequence
*/
public function getChildren()
{
$x = $this->current();
if ($this->canGoDeeper()) {
return TraverseSequence::make($x, $this->key(), $this->pathSeparator)->setMaxDepth($this->depth - 1);
} else {
return IterationTraits::map(Sequence::make($x), FnGen::fnIdentity(), FnString::fnAddPrefix($this->key() . $this->pathSeparator));
}
}