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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Edge cases for minsize and maxsize</title>
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<link rel="help" href="https://w3c.github.io/mathml-core/#dictionary-based-attributes">
<meta name="assert" content="Verify edge cases for minsize and maxsize .">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/mathml/support/fonts.js"></script>
<style>
math {
font: 25px/1 Ahem;
}
@font-face {
font-family: operators;
src: url("/fonts/math/operators.woff");
}
mo {
font-family: operators;
}
</style>
<script>
setup({ explicit_done: true });
window.addEventListener("load", () => { loadAllFonts().then(runTests); });
function runTests() {
var epsilon = 1;
var emToPx = 25;
test(function() {
assert_approx_equals(document.getElementById("negative_minsize").getBoundingClientRect().height, 5 * emToPx, epsilon);
}, `minsize < 0 is treated as 0`);
test(function() {
assert_approx_equals(document.getElementById("maxsize_less_than_minsize").getBoundingClientRect().height, 7 * emToPx, epsilon);
}, `maxsize < minsize is treated as maxsize = minsize`);
test(function() {
assert_less_than(document.getElementById("minsize_less_than_negative_maxsize").getBoundingClientRect().height, 2 * emToPx);
}, `minsize < maxsize < 0 is treated as maxsize = minsize = 0`);
test(function() {
assert_approx_equals(document.getElementById("zero_target_size_with_minsize").getBoundingClientRect().height, 4 * emToPx, epsilon);
}, `target size = 0 is treated as Tascent = Tdescent = minsize/2`);
done();
}
</script>
</head>
<body>
<div id="log"></div>
<p>
<math>
<mrow>
<mspace width="1em" height="5em" style="background: blue"/>
<mo id="negative_minsize" minsize="-10em" stretchy="true" symmetric="false">⥯</mo>
<mn><!-- not space like --></mn>
</mrow>
</math>
</p>
<p>
<math>
<mrow>
<mspace width="1em" height="5em" style="background: blue"/>
<mo id="maxsize_less_than_minsize" minsize="7em" maxsize="2em" stretchy="true" symmetric="false">⥯</mo>
<mn><!-- not space like --></mn>
</mrow>
</math>
</p>
<p>
<math>
<mrow>
<mspace width="1em" height="5em" style="background: blue"/>
<mo id="minsize_less_than_negative_maxsize" minsize="-2em" maxsize="-1em" stretchy="true" symmetric="false">⥯</mo>
<mn><!-- not space like --></mn>
</mrow>
</math>
</p>
<p>
<math>
<mrow>
<mspace width="1em" height="0em" style="background: blue"/>
<mo id="zero_target_size_with_minsize" minsize="2em" stretchy="true" symmetric="true">⥯</mo>
<mn><!-- not space like --></mn>
</mrow>
</math>
</p>
</body>
</html>
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