| <!DOCTYPE HTML> |
| <title>Element.scroll* methods exception handling with various arguments</title> |
| <link rel="help" |
| href="https://drafts.csswg.org/cssom-view/#extension-to-the-element-interface"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <!-- |
| This test makes sure that calling the element scrolling methods with a single |
| non-dictionary argument or with a dictionary whose 'behavior' field is invalid |
| throws an exception. |
| --> |
| <div id="container" style="height: 100px; width: 100px; overflow:scroll;"> |
| <div style="height: 1000px; width: 1000px;"></div> |
| </div> |
| |
| <script type="text/javascript"> |
| "use strict"; |
| |
| const container = document.getElementById("container"); |
| const x = 25; |
| const y = 50; |
| |
| function reset() { |
| container.scrollTo(0, 0); |
| } |
| |
| let scroll_methods = ["scrollTo", "scroll", "scrollBy"]; |
| |
| for (const scroll_method of scroll_methods) { |
| promise_test(async (test) => { |
| reset(); |
| try { |
| await container[scroll_method](); |
| } catch(e) { |
| assert_unreached(e); |
| } |
| }, scroll_method + " with 0 arguments"); |
| |
| promise_test(async (test) => { |
| reset(); |
| await promise_rejects_js(test, TypeError, container[scroll_method](x)); |
| }, scroll_method + " with 1 non-dictionary argument"); |
| |
| promise_test(async (test) => { |
| reset(); |
| try { |
| await container[scroll_method]({ }); |
| await container[scroll_method]({ left: x }); |
| await container[scroll_method]({ top: y }); |
| await container[scroll_method]({ behavior: "auto" }); |
| await container[scroll_method]({ behavior: "instant" }); |
| await container[scroll_method]({ behavior: "smooth" }); |
| await container[scroll_method]({ left: x, top: y }); |
| await container[scroll_method]({ left: x, top: y, behavior: "auto" }); |
| await container[scroll_method]({ left: x, top: y, behavior: "instant" }); |
| await container[scroll_method]({ left: x, top: y, behavior: "smooth" }); |
| } catch(e) { |
| assert_unreached(e); |
| } |
| }, scroll_method + " with a valid ScrollToOptions argument"); |
| |
| promise_test(async (test) => { |
| reset(); |
| await promise_rejects_js(test, TypeError, container[scroll_method]({ behavior: "" })); |
| await promise_rejects_js(test, TypeError, container[scroll_method]({ left: x, top: y, behavior: "abcd" })); |
| await promise_rejects_js(test, TypeError, container[scroll_method]({ left: x, top: y, behavior: 200 })); |
| }, scroll_method + " with an invalid ScrollToOptions argument"); |
| } |
| </script> |
