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<!DOCTYPE html>
<link rel="help" href="https://html.spec.whatwg.org/C/#the-input-element-as-a-text-entry-widget">
<title>Test `size` attribute behavior</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<input id="missing">
<input id="invalid" size="-1">
<input id="size0" size="0">
<input id="size1" size="1">
<input id="size10" size="10">
<input id="size20" size="20">
<input id="size21" size="21">
<input id="computed" style="border:none; padding:0;" size="19">
<input id="computedNone" style="display:none" size="17">
<script>
test(() => {
assert_equals(missing.offsetWidth, size20.offsetWidth);
}, 'A misssing attribute is equivalent to size=20');
test(() => {
assert_equals(invalid.offsetWidth, size20.offsetWidth, 'size="-1"');
assert_equals(size0.offsetWidth, size20.offsetWidth, 'size="0"');
}, 'An invalid attribute value is equivalent to size=20');
test(() => {
assert_less_than(size1.offsetWidth, size10.offsetWidth, '1 < 10');
assert_less_than(size10.offsetWidth, size20.offsetWidth, '10 < 20');
assert_less_than(size20.offsetWidth, size21.offsetWidth, '20 < 21');
}, 'The width depends on a size attribute');
test(() => {
const computedString = getComputedStyle(computed).width;
assert_equals(computed.offsetWidth,
Math.round(computedString.substring(0, computedString.length - 2)));
}, 'Size attribute value affects layout-dependent computed style');
test(() => {
const computedString = getComputedStyle(computedNone).width;
assert_equals(computedString, 'auto');
}, 'Size attribute value is not a presentational hint');
</script>
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