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Test Info: Warnings
- This test has a WPT meta file that expects 1 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /mathml/relations/css-styling/scriptlevel-001.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Automatic scriptlevel</title>
<link rel="help" href="https://w3c.github.io/mathml-core/#the-displaystyle-and-scriptlevel-attributes">
<link rel="stylesheet" href="/fonts/ahem.css">
<meta name="assert" content="Verify automatic scriptlevel changes">
<style>
#container, math {
/* Ahem font does not have a MATH table so the font-size scale factor
is always 0.71^{computed - inherited math script level} */
font: 100px/1 Ahem;
}
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/mathml/support/mathml-fragments.js"></script>
<script>
setup({ explicit_done: true });
window.addEventListener("load", runTests);
function fontSize(element) {
return parseFloat((/(.+)px/).exec(window.getComputedStyle(element).getPropertyValue("font-size"))[1]);
}
function runTests() {
var container = document.getElementById("container");
var epsilon = .1
var fontSizeAtScriptLevelZero = fontSize(container);
test(function() {
var element = document.getElementById("mfrac_displaystyle");
assert_approx_equals(fontSize(element.children[0]), fontSizeAtScriptLevelZero, epsilon, "numerator");
assert_approx_equals(fontSize(element.children[1]), fontSizeAtScriptLevelZero, epsilon, "denominator");
}, "automatic scriptlevel on mfrac (displaystyle=true)");
test(function() {
var element = document.getElementById("mfrac_notdisplaystyle");
assert_approx_equals(fontSize(element.children[0]), fontSizeAtScriptLevelZero * .71, epsilon, "numerator");
assert_approx_equals(fontSize(element.children[1]), fontSizeAtScriptLevelZero * .71, epsilon, "denominator");
}, "automatic scriptlevel on mfrac (displaystyle=false)");
test(function() {
var element = document.getElementsByTagName("mroot")[0];
assert_approx_equals(fontSize(element.children[0]), fontSizeAtScriptLevelZero, epsilon, "base");
assert_approx_equals(fontSize(element.children[1]), fontSizeAtScriptLevelZero * .71 * .71, epsilon, "index");
}, "automatic scriptlevel on mroot");
["msub", "msup", "msubsup", "munder", "mover", "munderover", "mmultiscripts"].forEach(tag => {
test(function() {
var element = document.getElementsByTagName(tag)[0];
for (var i = 0; i < element.children.length; i++)
assert_approx_equals(fontSize(element.children[i]), i > 0 ? fontSizeAtScriptLevelZero * .71 : fontSizeAtScriptLevelZero, epsilon, `child ${i}`);
}, `automatic scriptlevel on ${tag}`);
});
test(function() {
var element = document.querySelector("munder[accentunder='true']");
assert_approx_equals(fontSize(element.children[0]), fontSizeAtScriptLevelZero, epsilon, "base");
assert_approx_equals(fontSize(element.children[1]), fontSizeAtScriptLevelZero, epsilon, "under");
}, `automatic scriptlevel on munder (accentunder=true)`);
test(function() {
var element = document.querySelector("mover[accent='true']");
assert_approx_equals(fontSize(element.children[0]), fontSizeAtScriptLevelZero, epsilon, "base");
assert_approx_equals(fontSize(element.children[1]), fontSizeAtScriptLevelZero, epsilon, "over");
}, `automatic scriptlevel on mover (accent=true)`);
test(function() {
var element = document.querySelector("munderover[accentunder='true']");
assert_approx_equals(fontSize(element.children[0]), fontSizeAtScriptLevelZero, epsilon, "base");
assert_approx_equals(fontSize(element.children[1]), fontSizeAtScriptLevelZero, epsilon, "under");
assert_approx_equals(fontSize(element.children[2]), fontSizeAtScriptLevelZero * .71, epsilon, "over");
}, `automatic scriptlevel on munderover (accentunder=true)`);
test(function() {
var element = document.querySelector("munderover[accent='true']");
assert_approx_equals(fontSize(element.children[0]), fontSizeAtScriptLevelZero, epsilon, "base");
assert_approx_equals(fontSize(element.children[1]), fontSizeAtScriptLevelZero * .71, epsilon, "under");
assert_approx_equals(fontSize(element.children[2]), fontSizeAtScriptLevelZero, epsilon, "over");
}, `automatic scriptlevel on munderover (accent=true)`);
test(function() {
var element = document.getElementById("munderover-dynamic-case-insensitive")
assert_approx_equals(fontSize(element.children[0]), fontSizeAtScriptLevelZero, epsilon, "base");
assert_approx_equals(fontSize(element.children[1]), fontSizeAtScriptLevelZero * .71, epsilon, "under");
assert_approx_equals(fontSize(element.children[2]), fontSizeAtScriptLevelZero, epsilon, "over");
element.removeAttribute("accent");
element.setAttribute("accentunder", "TrUe");
assert_approx_equals(fontSize(element.children[0]), fontSizeAtScriptLevelZero, epsilon, "base");
assert_approx_equals(fontSize(element.children[1]), fontSizeAtScriptLevelZero, epsilon, "under");
assert_approx_equals(fontSize(element.children[2]), fontSizeAtScriptLevelZero * .71, epsilon, "over");
}, "checking dynamic/case-insensitive accent/accentunder");
done();
}
</script>
</head>
<body>
<div id="log"></div>
<div id="container">
<p>
<math displaystyle="true">
<mfrac id="mfrac_displaystyle">
<mn>0</mn>
<mn>1</mn>
</mfrac>
</math>
<math displaystyle="false">
<mfrac id="mfrac_notdisplaystyle">
<mn>0</mn>
<mn>1</mn>
</mfrac>
</math>
</p>
<p>
<math>
<mroot>
<mn>0</mn>
<mn>1</mn>
</mroot>
</math>
</p>
<p>
<math>
<msub>
<mn>0</mn>
<mn>1</mn>
</msub>
</math>
<math>
<msup>
<mn>0</mn>
<mn>1</mn>
</msup>
</math>
<math>
<msubsup>
<mn>0</mn>
<mn>1</mn>
<mn>2</mn>
</msubsup>
</math>
<math>
<munder>
<mn>0</mn>
<mn>1</mn>
</munder>
</math>
<math>
<mover>
<mn>0</mn>
<mn>1</mn>
</mover>
</math>
<math>
<munderover>
<mn>0</mn>
<mn>1</mn>
<mn>2</mn>
</munderover>
</math>
<math>
<mmultiscripts>
<mn>0</mn>
<mn>1</mn>
<mn>2</mn>
<mn>3</mn>
<mn>4</mn>
<mprescripts/>
<mn>6</mn>
<mn>7</mn>
<mn>8</mn>
<mn>9</mn>
</mmultiscripts>
</math>
</p>
<p>
<math>
<munder accentunder="true">
<mn>0</mn>
<mn>1</mn>
</munder>
</math>
<math>
<mover accent="true">
<mn>0</mn>
<mn>1</mn>
</mover>
</math>
<math>
<munderover accent="true">
<mn>0</mn>
<mn>1</mn>
<mn>2</mn>
</munderover>
</math>
<math>
<munderover accentunder="true">
<mn>0</mn>
<mn>1</mn>
<mn>2</mn>
</munderover>
</math>
</p>
<p>
<math>
<munderover id="munderover-dynamic-case-insensitive" accent="TrUe">
<mn>0</mn>
<mn>1</mn>
<mn>2</mn>
</munderover>
</math>
</p>
</div>
</body>
</html>