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<!doctype html>
<meta charset=utf-8>
<title>The deadline after an expired timer must not be negative</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<div id="log"></div>
<script>
  async_test(function(t) {
    setTimeout(() => {

      requestIdleCallback(
        t.step_func((deadline) => {
          assert_false(deadline.didTimeout);
          assert_greater_than_equal(deadline.timeRemaining(), 0);
          t.done();
        }),
        { timeout: 1000 }
      );

    }, 0);
  });
</script>