chromium/third_party/blink/web_tests/fast/forms/interactive-validation-formnovalidate-2.html

<!DOCTYPE html>
<html>
<body>
<script src="../../resources/js-test.js"></script>
<script src="resources/common.js"></script>
<form id="f" action="interactive-validation-formnovalidate-2.html">
<input type="hidden" name="submitted" value="true">
<input name="i0" required id="i0">
<input type="submit" id="s" formnovalidate>
</form>
<script>
description('Test if the form is submitted with a submit button with formnovalidate.');

function startOrVerify() {
    var query = window.location.search;
    if (query.indexOf('submitted=true') != -1) {
        testPassed('The form should not be submitted.');
        shouldBeTrue('location.search.indexOf("i0=") != -1');
        debug('TEST COMPLETE');
        if (window.testRunner)
            testRunner.notifyDone();
    } else {
        // HTMLFormElement::submit() skips validation. Use the submit button.
        clickElement(document.getElementById('s'));
        testFailed('The form was not submitted.');
    }
}

if (window.testRunner)
    testRunner.waitUntilDone();
window.onload = startOrVerify;
</script>
</body>
</html>