<!DOCTYPE html> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=765590 --> <head> <title>Test for Bug 765590</title> <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> <style> @namespace svg "http://www.w3.org/2000/svg"; </style> </head> <body> <script> var styleElement = document.getElementsByTagName("style")[0] var rule = styleElement.sheet.cssRules[0]; is(rule.type, 10, "rule type should be equal 10") is(CSSRule.NAMESPACE_RULE, 10, "NAMESPACE_RULE should be equal to 10") </script> </body>