<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Ignored CSS properties</title>
<link rel="help" href="https://w3c.github.io/mathml-core/#css-styling">
<meta name="assert" content="Verify style with ignored properties does not affect MathML layout.">
<meta name="timeout" content="long">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/mathml/support/feature-detection.js"></script>
<script src="/mathml/support/layout-comparison.js"></script>
<script src="/mathml/support/mathml-fragments.js"></script>
<script>
  var epsilon = 1;

  setup({ explicit_done: true });
  window.addEventListener("load", runTests);

  function runTests() {

      for (tag in MathMLFragments) {
          if (!FragmentHelper.isValidChildOfMrow(tag))
              continue;

          var ignoredProperties = [
              "writing-mode: vertical-rl;",
              "white-space: normal;",
              "float: right;",
              "align-content: end; justify-content: end;",
              "align-self: end; justify-self: end;",
          ];

          ignoredProperties.forEach(ignoredStyle => {
              document.body.insertAdjacentHTML("beforeend", `<div style="position: absolute;">\
<div style="display: inline-block"><math>${MathMLFragments[tag]}</math></div>\
<div style="display: inline-block"><math>${MathMLFragments[tag]}</math></div>\
</div>`);
              var div = document.body.lastElementChild;

              // Create MathML structure with ignored style properties.
              var elementContainer = div.firstElementChild;
              var elementContainerWidth = elementContainer.getBoundingClientRect().width;
              var element = FragmentHelper.element(elementContainer);
              if (!FragmentHelper.isEmpty(tag))
                  FragmentHelper.forceNonEmptyDescendants(element);
              element.setAttribute("style", ignoredStyle);
              Array.from(element.getElementsByTagNameNS("*", FragmentHelper.mathml_namespace)).forEach(descendant => {
                  descendant.setAttribute("style", ignoredStyle);
              });

              var referenceContainer = div.lastElementChild;
              var referenceContainerWidth = referenceContainer.getBoundingClientRect().width;
              var reference = FragmentHelper.element(referenceContainer);
              if (!FragmentHelper.isEmpty(tag))
                  FragmentHelper.forceNonEmptyDescendants(reference);

              test(function() {
                  assert_true(MathMLFeatureDetection[`has_${tag}`](), `${tag} is supported`);
                  assert_approx_equals(elementContainerWidth, referenceContainerWidth, epsilon);
              }, `${tag} preferred width calculation is not affected by ${ignoredStyle}`);

              test(function() {
                  assert_true(MathMLFeatureDetection[`has_${tag}`](), `${tag} is supported`);
                  compareLayout(element, reference, epsilon);
              }, `${tag} layout is not affected by ${ignoredStyle}`);

              div.style = "display: none;"; // Hide the div after measurement.
          });
      }

      done();
  }
</script>
</head>
<body>
  <div id="log"></div>
</body>
</html>
