list_test.module

<?php


/**
 * @file
 * Helper module for the List module tests.
 */

/**
 * Allowed values callback.
 */
function list_test_allowed_values_callback($field) {
    $values = array(
        'Group 1' => array(
            0 => 'Zero',
        ),
        1 => 'One',
        'Group 2' => array(
            2 => 'Some <script>dangerous</script> & unescaped <strong>markup</strong>',
        ),
    );
    return $values;
}

/**
 * An entity-bound allowed values callback.
 */
function list_test_dynamic_values_callback($field, $instance, $entity_type, $entity, &$cacheable) {
    $cacheable = FALSE;
    // We need the values of the entity as keys.
    return drupal_map_assoc(array_merge(array(
        $entity->ftlabel,
    ), entity_extract_ids($entity_type, $entity)));
}