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+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8"/>
+<title>MathML inside content-editable</title>
+<link rel="help" href="https://w3c.github.io/mathml-core/#html-and-svg">
+<meta name="assert" content="Verify that putting MathML inside a content-editable div shouldn't affect its layout.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/mathml/support/feature-detection.js"></script>
+<script>
+ setup({ explicit_done: true });
+ window.addEventListener("DOMContentLoaded", function() {
+ var epsilon = 1;
+ var mfrac = document.getElementById("mfrac");
+ var num = mfrac.firstElementChild.getBoundingClientRect();
+ var denom = mfrac.lastElementChild.getBoundingClientRect();
+ test(function() {
+ assert_true(MathMLFeatureDetection.has_mspace());
+ assert_approx_equals(num.width, 30, epsilon, "numerator width");
+ assert_approx_equals(num.height, 40, epsilon, "numerator height");
+ assert_approx_equals(denom.width, 50, epsilon, "denominator width");
+ assert_approx_equals(denom.height, 60, epsilon, "denominator height");
+ }, "mspace layout in content-editable div");
+ test(function() {
+ assert_true(MathMLFeatureDetection.has_mfrac());
+ assert_greater_than_equal(denom.bottom - num.top,
+ (40 + 60),
+ "numerator is above the denominator");
+ assert_approx_equals((num.left + num.right) / 2,
+ (denom.left + denom.right) / 2,
+ epsilon, "numerator and denominator are horizontally aligned");
+ }, "mfrac layout in content-editable div");
+ done();
+ });
+</script>
+</head>
+<body>
+ <div id="log"></div>
+ <div contenteditable="true">
+ This is
+ <math>
+ <mfrac id="mfrac">
+ <mspace width="30px" height="40px" style="background: cyan"></mspace>
+ <mspace width="50px" height="60px" style="background: yellow"></mspace>
+ </mfrac>
+ </math>
+ a content editable div
+ </div>
+</body>
+</html>