test_bug1371488.html

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<!DOCTYPE html>

<html>

<head>

  <title>Test for bug 1371488</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css">

  <style id="test">

    @import url(non-exist-file.css);

  </style>

</head>

<body>

<pre id="log">

<script>

  let sheet = document.getElementById("test").sheet;

  let rule = sheet.cssRules[0];

  ok(rule, "The import rule should not be null even if the file fails to load");

  is(rule.type, CSSRule.IMPORT_RULE, "It is the import rule");

  ok(rule.styleSheet, "The associated stylesheet should exists as well");

  is(rule.styleSheet.cssRules.length, 0, "The stylesheet should be empty");

</script>

</pre>

</body>

</html>