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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>MathML tabIndex attribute</title>
<link rel="help" href="https://w3c.github.io/mathml-core/#css-styling">
<link rel="help" href="https://w3c.github.io/mathml-core/#the-top-level-math-element">
<meta name="assert" content="Verify default values for the tabIndex attribute">
<script src="/mathml/support/mathml-fragments.js"></script>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<div id="log"></div>
<math>
</math>
<script>
const htmlLinkableElements =
new Set([
'mi', 'mo', 'mn', 'ms', 'mtext', 'mrow'
]);
Object.keys(MathMLFragments).forEach(elName => {
const mathEl = document.querySelector('math');
mathEl.innerHTML = `
<${elName} id="el" onfocus="alert('fail')"></${elName}>
<${elName} id="el-link" href="javascript:alert('fail')" onfocus="alert('fail')"></${elName}>
`;
const el = mathEl.querySelector('#el');
const elLink = mathEl.querySelector('#el-link');
const expectedDefault = (htmlLinkableElements.has(elName)) ? 0 : -1;
test(() => {
assert_equals(el.tabIndex, expectedDefault, "no attribute");
el.setAttribute("tabindex", "invalid");
assert_equals(el.getAttribute("tabindex"), "invalid");
assert_equals(el.tabIndex, expectedDefault, "invalid");
el.setAttribute("tabindex", "9999999999");
assert_equals(el.getAttribute("tabindex"), "9999999999");
assert_equals(el.tabIndex, expectedDefault, "too large integer");
}, `default and invalid values for ${elName} without href`);
test(() => {
assert_equals(elLink.tabIndex, expectedDefault, "no attribute");
elLink.setAttribute("tabindex", "invalid");
assert_equals(elLink.getAttribute("tabindex"), "invalid");
assert_equals(elLink.tabIndex, expectedDefault, "invalid");
elLink.setAttribute("tabindex", "9999999999");
assert_equals(elLink.getAttribute("tabindex"), "9999999999");
assert_equals(elLink.tabIndex, expectedDefault, "too large integer");
}, `default and invalid values for ${elName} with href`);
});
</script>
</body>
</html>
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