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Test Info:

<!doctype html>
<meta charset="utf-8">
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script>
function childWindowLoaded(childWin) {
is(
childWin.getComputedStyle(childWin.document.documentElement).backgroundColor,
"rgb(0, 255, 0)",
"Sheet should apply",
)
is(
SpecialPowers.getDOMWindowUtils(childWin).parsedStyleSheets,
0,
`Shouldn't need to parse the stylesheet ${childWin.parent == window ? "frame" : "top"}`
);
if (childWin.top == childWin) {
SimpleTest.finish();
}
}
</script>
<link rel="stylesheet" href="file_shared_sheet_caching.css">
<iframe src="file_shared_sheet_caching.html"></iframe>
<a rel="opener" href="file_shared_sheet_caching.html" target="_blank">Navigation</a>
<script>
SimpleTest.waitForExplicitFinish();
onload = function() {
info("Sheets parsed: " + SpecialPowers.DOMWindowUtils.parsedStyleSheets);
is(
getComputedStyle(document.documentElement).backgroundColor,
"rgb(0, 255, 0)",
"Sheet should apply",
)
document.querySelector("a").click();
}
</script>