1 files changed, 38 insertions, 0 deletions
diff --git a/layout/reftests/mathml/opentype-fraction-dynamic-linethickness.html b/layout/reftests/mathml/opentype-fraction-dynamic-linethickness.html
new file mode 100644
index 0000000000..aaf9089e45
--- /dev/null
+++ b/layout/reftests/mathml/opentype-fraction-dynamic-linethickness.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+  <head>
+    <title>mfrac linethickness</title>
+    <style type="text/css">
+      math {
+        font-size: 10px;
+      }
+      @font-face {
+        font-family: fraction-1;
+        src: url(../fonts/math/fraction-1.otf);
+      }
+    </style>
+    <script type="text/javascript">
+      function doTest() {
+        var mfracs = document.getElementsByTagName("mfrac");
+        mfracs[0].removeAttribute("linethickness");
+        mfracs[1].removeAttribute("linethickness");
+        document.documentElement.removeAttribute("class");
+      }
+      window.addEventListener("MozReftestInvalidate", doTest);
+    </script>
+  </head>
+  <body>
+    <math style="font-family: fraction-1;">
+      <mfrac linethickness="200%">
+        <mspace height="1em" width="1em" mathbackground="red"/>
+        <mspace height="1em" width="1em" mathbackground="red"/>
+      </mfrac>
+    </math>
+      <math displaystyle="true" style="font-family: fraction-1;">
+        <mfrac linethickness="200%">
+          <mspace height="1em" width="1em" mathbackground="red"/>
+          <mspace height="1em" width="1em" mathbackground="red"/>
+        </mfrac>
+      </math>
+  </body>
+</html>