Ticket #14485: test-term-cache.php

<?php

function test_term_cache() {
        wp_delete_term(get_term_by('name', 'Parent', 'category')->term_id, 'category');
        wp_delete_term(get_term_by('name', 'Child', 'category')->term_id, 'category');

        $parent = wp_insert_term('Parent', 'category');
        $parent_id = $parent['term_id'];

        $child = wp_insert_term('Child', 'category', array('parent' => $parent_id));
        $child_id = $child['term_id'];

        echo '<pre>';
        print_r(get_term_children($parent_id, 'category'));
        echo '</pre>';
}

add_action('admin_notices', 'test_term_cache');