ordering.html - mozsearch

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /resize-observer/ordering.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>ResizeObserver and IntersectionObserver ordering</title>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script>

  async_test(function(t) {

    let sawResize = false;

    let sawIo = false;

    let resizeObserver = new ResizeObserver(t.step_func(function() {

      assert_false(sawIo, "ResizeObserver notification should be delivered before IntersectionObserver notification");

      sawResize = true;

      resizeObserver.disconnect();

    }));

    let io = new IntersectionObserver(t.step_func_done(function() {

      assert_true(sawResize, "IntersectionObserver notification should be delivered after ResizeObserver notification");

      sawIo = true;

      io.disconnect();

    }));

    resizeObserver.observe(document.documentElement);

    io.observe(document.documentElement);

});

</script>