| <!DOCTYPE html> |
| <script src="../../resources/js-test.js"></script> |
| <div id="spanner"></div> |
| <script> |
| setPrintTestResultsLazily(); |
| |
| spanner.style.height = "3000px"; |
| scrollTo(0, 1000); |
| |
| if (window.internals) { |
| var styleCount = internals.updateStyleAndReturnAffectedElementCount(); |
| var layoutCount = internals.needsLayoutCount(); |
| // scrollTo should have synchronously updated style and layout |
| shouldBe("styleCount", "0"); |
| shouldBe("layoutCount", "0"); |
| } |
| shouldBe("window.scrollY", "1000"); |
| |
| spanner.style.height = "2000px"; |
| scrollTo(0, 0); |
| |
| if (window.internals) { |
| var styleCount = internals.updateStyleAndReturnAffectedElementCount(); |
| var layoutCount = internals.needsLayoutCount(); |
| // scrollTo should not need to synchronously updated style and layout |
| shouldNotBe("styleCount", "0"); |
| shouldNotBe("layoutCount", "0"); |
| } |
| shouldBe("window.scrollY", "0"); |
| </script> |
