<!DOCTYPE html>
<html>
  <head>
    <script src="../../resources/testharness.js"></script>
    <script src="../../resources/testharnessreport.js"></script>
    <style>
      body {
        height: 10000px;
      }
    </style>
  </head>
  <body>
    <script>
      if (window.internals) {
        test(() => {
          window.scroll(0, 9000);
          const originalPageYOffset = pageYOffset;
          window.internals.setPageZoomFactor(2);
          const afterZoomPageYOffset = pageYOffset;
          window.internals.setPageZoomFactor(1);
          const afterResetPageYOffset = pageYOffset;

          assert_equals(originalPageYOffset, afterZoomPageYOffset);
          assert_equals(originalPageYOffset, afterResetPageYOffset);
        });
      }
    </script>
  </body>
</html>