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+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1443344
+-->
+<head>
+ <meta charset="utf-8">
+ <title>Test for Bug 1443344</title>
+ <script src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+ <script type="application/javascript">
+
+ /** Test for Bug 1443344 **/
+ SimpleTest.waitForExplicitFinish();
+
+ var sheetURL = new URL("file_bug1443344.css", location.href);
+ sheetURL.protocol = "http";
+ var link = document.createElement("link");
+ link.href = `data:text/css,@import url("${sheetURL}");`
+ link.rel = "stylesheet";
+ var loadFired = false, errorFired = false;
+ link.onload = () => loadFired = true;
+ link.onerror = () => errorFired = true;
+ document.head.appendChild(link);
+
+ addLoadEvent(() => {
+ is(loadFired, false, "Should not fire onload for erroring @import");
+ is(errorFired, true, "Should fire onerror for erroring @import");
+ is(getComputedStyle($("importTarget")).color, "rgb(0, 255, 0)",
+ "Erroring sheet should not load");
+ SimpleTest.finish();
+ });
+
+ </script>
+ <style>
+ #importTarget { color: rgb(0, 255, 0); }
+ </style>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1443344">Mozilla Bug 1443344</a>
+<p id="display"><div id="importTarget"></div></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+</pre>
+</body>
+</html>