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Test Info:
- This WPT test may be referenced by the following Test IDs:
            - /css/bug1833279-001.html - WPT Dashboard Interop Dashboard
 
<!DOCTYPE HTML>
<meta charset="utf-8">
<link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
  setup({ single_test: true });
  // The following callback-function gets called twice by our iframe inner-doc:
  // 1. when the iframe's document finishes printing.
  // 2. when the iframe's document finishes loading its own <object> child-document.
  // When those two steps have completed, we're past the situation that would
  // trigger a fatal assertion when the object document gets cycle-collected.
  // So at that point we remove our iframe, and (after a rAF tick) trigger a
  // GC and CC, and then consider the test as having passed if we're still
  // alive at that point.
  const MAX_STEPS = 2;
  let stepsComplete = 0;
  function iframeStepComplete() {
    stepsComplete++;
    if (stepsComplete < MAX_STEPS) {
      return;
    }
    requestAnimationFrame(()=> {
      myIframe.remove();
      requestAnimationFrame(()=> {
        SpecialPowers.DOMWindowUtils.garbageCollect();
        SpecialPowers.DOMWindowUtils.cycleCollect();
        assert_true(true, "successfully completed without crashing");
        done();
      });
    });
  }
</script>