| <!DOCTYPE html> |
| <title>Testing default value of scroll-behavior</title> |
| <meta name="timeout" content="long"/> |
| <link rel="author" title="Frédéric Wang" href="mailto:fwang@igalia.com"> |
| <link rel="help" href="https://drafts.csswg.org/cssom-view/#propdef-scroll-behavior"> |
| <link rel="help" href="https://drafts.csswg.org/cssom-view/#scrolling-box"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="support/scroll-behavior.js"></script> |
| <style> |
| .scrollable { |
| overflow: auto; |
| width: 400px; |
| height: 200px; |
| } |
| </style> |
| <div id="log"> |
| </div> |
| <div id="overflowNode" class="scrollable"> |
| <div style="width: 2000px; height: 1000px; background: linear-gradient(135deg, red, green);"> |
| <span style="display: inline-block; width: 500px; height: 250px;"></span><span id="elementToReveal" style="display: inline-block; vertical-align: -15px; width: 10px; height: 15px; background: black;"></span> |
| </div> |
| </div> |
| <script> |
| var scrollingElement = overflowNode; |
| var elementToRevealLeft = 500; |
| var elementToRevealTop = 250; |
| var scrollFunction = "scroll"; |
| |
| promise_test(() => { |
| resetScroll(scrollingElement); |
| assert_equals(scrollingElement.scrollLeft, 0); |
| assert_equals(scrollingElement.scrollTop, 0); |
| scrollNode(scrollingElement, "scroll", "instant", elementToRevealLeft, elementToRevealTop); |
| assert_equals(scrollingElement.scrollLeft, elementToRevealLeft, "Should set scrollLeft immediately"); |
| assert_equals(scrollingElement.scrollTop, elementToRevealTop, "Should set scrollTop immediately"); |
| return new Promise((resolve) => { resolve(); }); |
| }, "Instant scrolling of an element with default scroll-behavior"); |
| |
| promise_test(() => { |
| resetScroll(scrollingElement); |
| assert_equals(scrollingElement.scrollLeft, 0); |
| assert_equals(scrollingElement.scrollTop, 0); |
| scrollNode(scrollingElement, "scroll", "smooth", elementToRevealLeft, elementToRevealTop); |
| assert_less_than(scrollingElement.scrollLeft, elementToRevealLeft, "Should not set scrollLeft immediately"); |
| assert_less_than(scrollingElement.scrollTop, elementToRevealTop, "Should not set scrollTop immediately"); |
| return waitForScrollEnd(scrollingElement).then(() => { |
| assert_equals(scrollingElement.scrollLeft, elementToRevealLeft, "Final value of scrollLeft"); |
| assert_equals(scrollingElement.scrollTop, elementToRevealTop, "Final value of scrollTop"); |
| }); |
| }, "Smooth scrolling of an element with default scroll-behavior"); |
| </script> |
