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+<!doctype html>
+<title>Test for custom content inheritance</title>
+<style>
+ html { color: red !important; }
+</style>
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<script>
+onload = function() {
+ try {
+ let doc = SpecialPowers.wrap(document);
+ let div = doc.createElement('div');
+ div.id = "test-id";
+ ok(!!doc.insertAnonymousContent,
+ "Must have the insertAnonymousContent API");
+ let content = doc.insertAnonymousContent(div);
+ ok(!!content, "Must have anon content");
+ isnot(content.getComputedStylePropertyValue("test-id", "color"),
+ getComputedStyle(document.documentElement).color,
+ "Custom anon content shouldn't inherit from the root element");
+ } catch(e) {
+ ok(false, "Threw: " + e);
+ }
+ SimpleTest.finish();
+};
+SimpleTest.waitForExplicitFinish();
+</script>