174 lines
5.6 KiB
HTML
174 lines
5.6 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Space-like elements</title>
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<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
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<link rel="help" href="https://w3c.github.io/mathml-core/#definition-of-space-like-elements">
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<link rel="help" href="https://w3c.github.io/mathml-core/#operator-fence-separator-or-accent-mo">
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<link rel="help" href="https://w3c.github.io/mathml-core/#layout-of-mrow">
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<meta name="assert" content="Verify definition of space-like elements">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/mathml/support/feature-detection.js"></script>
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<style>
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/* Default spacing of operator 'X' is 0.2777777777777778em so quite different
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from the measured/specified 0em and 1em. */
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math, math * {
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font: 25px/1 Ahem;
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}
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mn {
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color: black;
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}
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mo {
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color: yellow;
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}
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.testedElement, .testedElement * {
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color: blue !important;
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background: blue !important;
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}
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</style>
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<script>
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function spaceBefore(id) {
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var element = document.getElementById(id);
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var mnBeforeParent = element.parentNode.previousElementSibling;
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return element.getBoundingClientRect().left - mnBeforeParent.getBoundingClientRect().right;
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}
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function spaceAfter(id) {
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var element = document.getElementById(id);
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var mnAfterParent = element.parentNode.nextElementSibling;
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return mnAfterParent.getBoundingClientRect().left - element.getBoundingClientRect().right;
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}
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setup({ explicit_done: true });
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window.addEventListener("load", runTests);
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function runTests() {
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var epsilon = 1;
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var emToPx = 25;
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test(function() {
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assert_true(MathMLFeatureDetection.has_operator_spacing());
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assert_approx_equals(spaceBefore("maction1"), emToPx, epsilon);
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assert_approx_equals(spaceAfter("maction1"), emToPx, epsilon);
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}, "space-like maction");
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test(function() {
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assert_true(MathMLFeatureDetection.has_operator_spacing());
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assert_approx_equals(spaceBefore("maction2"), emToPx, epsilon);
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assert_approx_equals(spaceAfter("maction2"), emToPx, epsilon);
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}, "space-like maction (no first child)");
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test(function() {
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assert_approx_equals(spaceBefore("maction3"), 0, epsilon);
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assert_true(MathMLFeatureDetection.has_operator_spacing());
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assert_approx_equals(spaceAfter("maction3"), 2 * emToPx, epsilon);
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}, "non-space like maction (first child not space-like)");
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test(function() {
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assert_true(MathMLFeatureDetection.has_operator_spacing());
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assert_approx_equals(spaceBefore("semantics1"), emToPx, epsilon);
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assert_approx_equals(spaceAfter("semantics1"), emToPx, epsilon);
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}, "space-like semantics");
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test(function() {
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assert_true(MathMLFeatureDetection.has_operator_spacing());
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assert_approx_equals(spaceBefore("semantics2"), emToPx, epsilon);
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assert_approx_equals(spaceAfter("semantics2"), emToPx, epsilon);
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}, "space-like semantics (no first child)");
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test(function() {
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assert_true(MathMLFeatureDetection.has_operator_spacing());
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assert_approx_equals(spaceBefore("semantics3"), 0, epsilon);
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assert_approx_equals(spaceAfter("semantics3"), 2 * emToPx, epsilon);
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}, "non-space like semantics (first child not space-like)");
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done();
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}
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</script>
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</head>
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<body>
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<div id="log"></div>
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<p>
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<math>
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<mn>X</mn>
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<mrow>
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<!-- maction is space-like when its first child exists and is space-like -->
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<maction id="maction1" class="testedElement" actiontype="statusline">
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<mtext>X</mtext>
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<mtext>STATUS MESSAGE</mtext>
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</maction>
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<mo lspace="1em" rspace="0em">X</mo>
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</mrow>
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<mn>X</mn>
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</math>
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</p>
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<p>
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<math>
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<mn>X</mn>
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<mrow>
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<!-- maction is not space-like when its first does not exist-like -->
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<maction id="maction2" class="testedElement" actiontype="statusline">
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</maction>
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<mo lspace="1em" rspace="0em">X</mo>
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</mrow>
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<mn>X</mn>
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</math>
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</p>
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<p>
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<math>
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<mn>X</mn>
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<mrow>
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<!-- maction is not space-like when its first is not space-like -->
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<maction id="maction3" class="testedElement" actiontype="statusline">
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<mn>1</mn>
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<mtext>STATUS MESSAGE</mtext>
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</maction>
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<mo lspace="1em" rspace="0em">X</mo>
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</mrow>
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<mn>X</mn>
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</math>
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</p>
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<p>
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<math>
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<mn>X</mn>
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<mrow>
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<!-- semantics is space-like when its first child exists and is space-like -->
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<semantics id="semantics1" class="testedElement" actiontype="statusline">
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<mtext>X</mtext>
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<annotation>TEXT ANNOTATION</annotation>
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</semantics>
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<mo lspace="1em" rspace="0em">X</mo>
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</mrow>
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<mn>X</mn>
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</math>
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</p>
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<p>
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<math>
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<mn>X</mn>
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<mrow>
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<!-- semantics is not space-like when its first does not exist-like -->
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<semantics id="semantics2" class="testedElement" actiontype="statusline">
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</semantics>
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<mo lspace="1em" rspace="0em">X</mo>
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</mrow>
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<mn>X</mn>
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</math>
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</p>
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<p>
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<math>
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<mn>X</mn>
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<mrow>
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<!-- semantics is not space-like when its first is not space-like -->
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<semantics id="semantics3" class="testedElement" actiontype="statusline">
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<mn>1</mn>
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<annotation>TEXT ANNOTATION</annotation>
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</semantics>
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<mo lspace="1em" rspace="0em">X</mo>
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</mrow>
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<mn>X</mn>
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</math>
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</p>
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</body>
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</html>
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