get_block_wrapper_attributes ACF simple test

block.json

{
    "name": "cab/test",
    "title": "Test",
    "description": "",
    "category": "",
    "icon": "",
    "apiVersion": 2,
    "keywords": [],
    "styles": [],
    "acf": {
        "mode": "preview",
        "renderTemplate": "render.php"
    },
    "supports": {
        "align": [ "wide" ],
        "anchor": false,
        "alignContent": false,
        "color": {
            "text": false,
            "background": false,
            "link": false
        },
        "alignText": false,
        "fullHeight": false
    },
    "style": "file:./style.css",
    "attributes": {
        "align": {
            "type": "string",
            "default": "wide"
        }
    }
}

render.php

<?php

echo '<div ' . get_block_wrapper_attributes() . '>';

echo 'Test';

echo '</div>';