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chromium/third_party/blink/web_tests/transitions/zoom.html 

<!DOCTYPE html>
<script src="../resources/testharness.js"></script>
<script src="../resources/testharnessreport.js"></script>
<style>
div {
  transition-property: margin-left, transform;
  transition-duration: 5s;
}
</style>


<div id="control">control</div>
<div id="target1" style="margin-left: 100px;">100px</div>
<div id="target2" style="margin-left: 50%;">50%</div>
<div id="target3" style="transform: translateX(100px);">50%</div>


<script>
test(() => {
  let target = document.getElementById("target1");
  getComputedStyle(target).marginLeft;
  target.style.zoom = "2.0";
  assert_equals(target.getAnimations().length, 0);
}, "zooming should not trigger a transition on an absolute length;");

test(() => {
  let target = document.getElementById("target2");
  getComputedStyle(target).marginLeft;
  target.style.zoom = "2.0";
  assert_equals(target.getAnimations().length, 0);
}, "zooming should not trigger a transition on a percentage length;");

test(() => {
  let target = document.getElementById("target3");
  getComputedStyle(target).marginLeft;
  target.style.zoom = "2.0";
  assert_equals(target.getAnimations().length, 0);
}, "zooming should not trigger a transition on a transform;");
</script>