`get_terms()` with `child_of` and `childless` combined

[nonverbla]

Hi there! I'm not sure if I found a bug or this is intended behaviour: If I use a combination of childless and child_of in a get_terms call, I get zero results.
My taxonomy's structure:

- Genre
-- Hip Hop
-- Trap
-- Rap
- Location
-- Europe
--- Germany
--- Sweden
--- Austria
-- Asia
--- China
--- Japan
--- Taiwan

My code:

<?php
$location_parent = get_term(123, 'my_custom_taxonomy');

$countries = get_terms(array(
  'taxonomy' => $location_parent->taxonomy,
  'hide_empty' => false,
  'child_of' => $location_parent->term_id, 
  'childless' => true
));

I'm trying to only list countries, basically children of 'location' that don't have children of their own.

[boonebgorges]

Hi @nonverbla - Thanks for the ticket. I'm unable to reproduce the problem with a unit test - see 44279.test.diff​, which is passing. Can you have a look at that test to see if I've accurately captured what you're describing?

[nonverbla]

Sorry @boonebgorges, I absolutely missed that this ticket got a reply 6 years ago!! If there is a passing unit test already in place, I'm trusting that much more than myself.

[oglekler]

I am closing this ticket because this issue is not replicated so far and this case is covered by Unit tests.

Trac ticket: https://core.trac.wordpress.org/ticket/44279

[jorbin]

I think that the test doesn't actually show the case described in the ticket so I updated it.

The test originally demonstrated direct children, but not all levels of children. To use the locations example, the test would return Antarctica which has no nations.