ladybird/Tests/LibWeb/Text/input/form-formMethod-attribute.html

<script src="./include.js"></script>
<script>
    test(() => {
        const btn = document.createElement('button');
        const values = [
            '', undefined, null,
            'get', 'post', 'dialog',
            'GeT', 'POST', 'DIAlog',
            'foo', 'xpost', '5%'
        ];

        println('button: unset');
        println(`button.getAttribute('formMethod') == '${btn.getAttribute('formMethod')}'`);
        println(`button.formMethod == '${btn.formMethod}'`);
        for (value of values) {
            btn.setAttribute('formMethod', value);
            println('');
            println(`button.setAttribute('formMethod', '${value}')`);
            println(`button.getAttribute('formMethod') == '${btn.getAttribute('formMethod')}'`);
            println(`button.formMethod == '${btn.formMethod}'`);
        }
    });
</script>