chromium/third_party/blink/web_tests/fast/forms/number/number-skip-spaces-in-user-input.html

<html>
<body>
<script src="../../../resources/js-test.js"></script>
<input type="number" id="input"></input>
<script>
description('should skip spaces from user input number');
var input = document.getElementById('input');
input.onblur = function() 
{
    shouldBe('input.valueAsNumber', '123456');
    shouldBeEqualToString('input.value', '123456');
}
window.onload = function()
{
    input.focus();
    document.execCommand('InsertText', false, ' 123 456 ')
    input.blur();
}
</script>
</body>
</html>