Update web-platform-tests to revision 50ff4f970fd8592a9f436d4e86e7d572de143260

This commit is contained in:
WPT Sync Bot 2018-09-20 21:31:18 -04:00
parent 82bbf3ad45
commit 8ea5658199
150 changed files with 4737 additions and 998 deletions

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<!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>

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<!DOCTYPE html>
<title>Testing scrollOptions' behavior for Element.scroll* and scroll-behavior on an element</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;
}
.autoBehavior {
scroll-behavior: auto;
}
.smoothBehavior {
scroll-behavior: smooth;
}
</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 styledElement = overflowNode;
var elementToRevealLeft = 500;
var elementToRevealTop = 250;
["scroll", "scrollTo", "scrollBy", "scrollIntoView"].forEach((scrollFunction) => {
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, null, 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(); });
}, `Element with auto scroll-behavior ; ${scrollFunction}() with default behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, "auto", 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(); });
}, `Element with auto scroll-behavior ; ${scrollFunction}() with auto behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, "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(); });
}, `Element with auto scroll-behavior ; ${scrollFunction}() with instant behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, "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");
});
}, `Element with auto scroll-behavior ; ${scrollFunction}() with smooth behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, null, 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");
});
}, `Element with smooth scroll-behavior ; ${scrollFunction}() with default behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, "auto", 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");
});
}, `Element with smooth scroll-behavior ; ${scrollFunction}() with auto behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, "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(); });
}, `Element with smooth scroll-behavior ; ${scrollFunction}() with instant behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, "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");
});
}, `Element with smooth scroll-behavior ; ${scrollFunction}() with smooth behavior`);
});
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, "scroll", "smooth", elementToRevealLeft, elementToRevealTop);
scrollNode(scrollingElement, "scroll", "smooth", elementToRevealLeft / 2, elementToRevealTop / 2);
return waitForScrollEnd(scrollingElement).then(() => {
assert_equals(scrollingElement.scrollLeft, elementToRevealLeft / 2, "Final value of scrollLeft");
assert_equals(scrollingElement.scrollTop, elementToRevealTop / 2, "Final value of scrollTop");
});
}, "Aborting an ongoing smooth scrolling on an element with another smooth scrolling");
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, "scroll", "smooth", elementToRevealLeft, elementToRevealTop);
scrollNode(scrollingElement, "scroll", "instant", 0, 0);
return waitForScrollEnd(scrollingElement).then(() => {
assert_equals(scrollingElement.scrollLeft, 0, "Final value of scrollLeft");
assert_equals(scrollingElement.scrollTop, 0, "Final value of scrollTop");
});
}, "Aborting an ongoing smooth scrolling on an element with an instant scrolling");
</script>

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<!DOCTYPE html>
<title>Testing scrollOptions' behavior for Element.scroll* and scroll-behavior on the root of the main frame</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>
body {
margin: 0;
}
.autoBehavior {
scroll-behavior: auto;
}
.smoothBehavior {
scroll-behavior: smooth;
}
</style>
<div id="log">
</div>
<div id="pageContent" style="position: absolute; left: 0; top: 0;">
<div id="elementToReveal" style="position: absolute; display: inline-block; width: 10px; height: 15px; background: black;"></div>
</div>
<script>
var pageLoaded = async_test("Page loaded");
var scrollingElement, styledElement, elementToRevealLeft, elementToRevealTop;
window.addEventListener("load", pageLoaded.step_func_done(function() {
scrollingElement = document.scrollingElement;
styledElement = document.documentElement;
pageContent.style.width = (10 + window.innerWidth) * 5 + "px";
pageContent.style.height = (20 + window.innerHeight) * 6 + "px";
elementToRevealLeft = (10 + window.innerWidth) * 3;
elementToRevealTop = (20 + window.innerHeight) * 4;
elementToReveal.style.left = elementToRevealLeft + "px";
elementToReveal.style.top = elementToRevealTop + "px";
add_completion_callback(() => { resetScroll(scrollingElement); });
["scroll", "scrollTo", "scrollBy", "scrollIntoView"].forEach((scrollFunction) => {
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, null, 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(); });
}, `Main frame with auto scroll-behavior ; ${scrollFunction}() with default behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, "auto", 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(); });
}, `Main frame with auto scroll-behavior ; ${scrollFunction}() with auto behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, "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(); });
}, `Main frame with auto scroll-behavior ; ${scrollFunction}() with instant behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, "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");
});
}, `Main frame with auto scroll-behavior ; ${scrollFunction}() with smooth behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, null, 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");
});
}, `Main frame with smooth scroll-behavior ; ${scrollFunction}() with default behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, "auto", 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");
});
}, `Main frame with smooth scroll-behavior ; ${scrollFunction}() with auto behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, "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(); });
}, `Main frame with smooth scroll-behavior ; ${scrollFunction}() with instant behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, "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");
});
}, `Main frame with smooth scroll-behavior ; ${scrollFunction}() with smooth behavior`);
});
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, "scroll", "smooth", elementToRevealLeft, elementToRevealTop);
scrollNode(scrollingElement, "scroll", "smooth", elementToRevealLeft / 2, elementToRevealTop / 2);
return waitForScrollEnd(scrollingElement).then(() => {
assert_equals(scrollingElement.scrollLeft, elementToRevealLeft / 2, "Final value of scrollLeft");
assert_equals(scrollingElement.scrollTop, elementToRevealTop / 2, "Final value of scrollTop");
});
}, "Aborting an ongoing smooth scrolling on the main frame with another smooth scrolling");
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, "scroll", "smooth", elementToRevealLeft, elementToRevealTop);
scrollNode(scrollingElement, "scroll", "instant", 0, 0);
return waitForScrollEnd(scrollingElement).then(() => {
assert_equals(scrollingElement.scrollLeft, 0, "Final value of scrollLeft");
assert_equals(scrollingElement.scrollTop, 0, "Final value of scrollTop");
});
}, "Aborting an ongoing smooth scrolling on the main frame with an instant scrolling");
}));
</script>

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<!DOCTYPE html>
<title>Testing scrollOptions' behavior for Element.scroll* on the window of the main frame</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>
body {
margin: 0;
}
.autoBehavior {
scroll-behavior: auto;
}
.smoothBehavior {
scroll-behavior: smooth;
}
</style>
<div id="log">
</div>
<div id="pageContent" style="position: absolute; left: 0; top: 0;">
<div id="elementToReveal" style="position: absolute; display: inline-block; width: 10px; height: 15px; background: black;"></div>
</div>
<script>
var pageLoaded = async_test("Page loaded");
var scrollingWindow, styledElement, elementToRevealLeft, elementToRevealTop;
window.addEventListener("load", pageLoaded.step_func_done(function() {
scrollingWindow = window;
styledElement = document.documentElement;
pageContent.style.width = (10 + window.innerWidth) * 5 + "px";
pageContent.style.height = (20 + window.innerHeight) * 6 + "px";
elementToRevealLeft = (10 + window.innerWidth) * 3;
elementToRevealTop = (20 + window.innerHeight) * 4;
elementToReveal.style.left = elementToRevealLeft + "px";
elementToReveal.style.top = elementToRevealTop + "px";
add_completion_callback(() => { resetScrollForWindow(window); });
["scroll", "scrollTo", "scrollBy"].forEach((scrollFunction) => {
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, scrollFunction, null, elementToRevealLeft, elementToRevealTop);
assert_equals(scrollingWindow.scrollX, elementToRevealLeft, "Should set scrollLeft immediately");
assert_equals(scrollingWindow.scrollY, elementToRevealTop, "Should set scrollTop immediately");
return new Promise((resolve) => { resolve(); });
}, `Main frame with auto scroll-behavior ; ${scrollFunction}() with default behavior`);
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, scrollFunction, "auto", elementToRevealLeft, elementToRevealTop);
assert_equals(scrollingWindow.scrollX, elementToRevealLeft, "Should set scrollLeft immediately");
assert_equals(scrollingWindow.scrollY, elementToRevealTop, "Should set scrollTop immediately");
return new Promise((resolve) => { resolve(); });
}, `Main frame with auto scroll-behavior ; ${scrollFunction}() with auto behavior`);
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, scrollFunction, "instant", elementToRevealLeft, elementToRevealTop);
assert_equals(scrollingWindow.scrollX, elementToRevealLeft, "Should set scrollLeft immediately");
assert_equals(scrollingWindow.scrollY, elementToRevealTop, "Should set scrollTop immediately");
return new Promise((resolve) => { resolve(); });
}, `Main frame with auto scroll-behavior ; ${scrollFunction}() with instant behavior`);
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, scrollFunction, "smooth", elementToRevealLeft, elementToRevealTop);
assert_less_than(scrollingWindow.scrollX, elementToRevealLeft, "Should not set scrollLeft immediately");
assert_less_than(scrollingWindow.scrollY, elementToRevealTop, "Should not set scrollTop immediately");
return waitForScrollEnd(scrollingWindow.document.scrollingElement).then(() => {
assert_equals(scrollingWindow.scrollX, elementToRevealLeft, "Final value of scrollLeft");
assert_equals(scrollingWindow.scrollY, elementToRevealTop, "Final value of scrollTop");
});
}, `Main frame with auto scroll-behavior ; ${scrollFunction}() with smooth behavior`);
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, scrollFunction, null, elementToRevealLeft, elementToRevealTop);
assert_less_than(scrollingWindow.scrollX, elementToRevealLeft, "Should not set scrollLeft immediately");
assert_less_than(scrollingWindow.scrollY, elementToRevealTop, "Should not set scrollTop immediately");
return waitForScrollEnd(scrollingWindow.document.scrollingElement).then(() => {
assert_equals(scrollingWindow.scrollX, elementToRevealLeft, "Final value of scrollLeft");
assert_equals(scrollingWindow.scrollY, elementToRevealTop, "Final value of scrollTop");
});
}, `Main frame with smooth scroll-behavior ; ${scrollFunction}() with default behavior`);
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, scrollFunction, "auto", elementToRevealLeft, elementToRevealTop);
assert_less_than(scrollingWindow.scrollX, elementToRevealLeft, "Should not set scrollLeft immediately");
assert_less_than(scrollingWindow.scrollY, elementToRevealTop, "Should not set scrollTop immediately");
return waitForScrollEnd(scrollingWindow.document.scrollingElement).then(() => {
assert_equals(scrollingWindow.scrollX, elementToRevealLeft, "Final value of scrollLeft");
assert_equals(scrollingWindow.scrollY, elementToRevealTop, "Final value of scrollTop");
});
}, `Main frame with smooth scroll-behavior ; ${scrollFunction}() with auto behavior`);
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, scrollFunction, "instant", elementToRevealLeft, elementToRevealTop);
assert_equals(scrollingWindow.scrollX, elementToRevealLeft, "Should set scrollLeft immediately");
assert_equals(scrollingWindow.scrollY, elementToRevealTop, "Should set scrollTop immediately");
return new Promise((resolve) => { resolve(); });
}, `Main frame with smooth scroll-behavior ; ${scrollFunction}() with instant behavior`);
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, scrollFunction, "smooth", elementToRevealLeft, elementToRevealTop);
assert_less_than(scrollingWindow.scrollX, elementToRevealLeft, "Should not set scrollLeft immediately");
assert_less_than(scrollingWindow.scrollY, elementToRevealTop, "Should not set scrollTop immediately");
return waitForScrollEnd(scrollingWindow.document.scrollingElement).then(() => {
assert_equals(scrollingWindow.scrollX, elementToRevealLeft, "Final value of scrollLeft");
assert_equals(scrollingWindow.scrollY, elementToRevealTop, "Final value of scrollTop");
});
}, `Main frame with smooth scroll-behavior ; ${scrollFunction}() with smooth behavior`);
});
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, "scroll", "smooth", elementToRevealLeft, elementToRevealTop);
scrollWindow(scrollingWindow, "scroll", "smooth", elementToRevealLeft / 2, elementToRevealTop / 2);
return waitForScrollEnd(scrollingWindow.document.scrollingElement).then(() => {
assert_equals(scrollingWindow.scrollX, elementToRevealLeft / 2, "Final value of scrollLeft");
assert_equals(scrollingWindow.scrollY, elementToRevealTop / 2, "Final value of scrollTop");
});
}, "Aborting an ongoing smooth scrolling on the main frame with another smooth scrolling");
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, "scroll", "smooth", elementToRevealLeft, elementToRevealTop);
scrollWindow(scrollingWindow, "scroll", "instant", 0, 0);
return waitForScrollEnd(scrollingWindow.document.scrollingElement).then(() => {
assert_equals(scrollingWindow.scrollX, 0, "Final value of scrollLeft");
assert_equals(scrollingWindow.scrollY, 0, "Final value of scrollTop");
});
}, "Aborting an ongoing smooth scrolling on the main frame with an instant scrolling");
}));
</script>

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<!DOCTYPE html>
<title>Testing scrollOptions' behavior with scrollIntoView for nested scrolling nodes</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;
height: 200px;
}
.smoothBehavior {
scroll-behavior: smooth;
}
.gradient {
background: linear-gradient(135deg, red, green);
}
</style>
<div id="log">
</div>
<div>
<div class="scrollable smoothBehavior" style="width: 450px">
<div class="gradient" style="width: 100px; height: 500px;"></div>
<div class="scrollable smoothBehavior" style="width: 400px">
<div class="gradient" style="width: 100px; height: 500px;"></div>
<div class="scrollable" style="width: 350px">
<div class="gradient" style="width: 100px; height: 500px;"></div>
<div class="scrollable" style="width: 300px">
<div class="gradient" style="width: 100px; height: 500px;"></div>
<div class="scrollable smoothBehavior" style="width: 250px">
<div class="gradient" style="width: 100px; height: 500px;"></div>
<div class="scrollable" style="width: 200px">
<div class="gradient" style="width: 100px; height: 500px;"></div>
<div id="elementToReveal" style="width: 10px; height: 10px; background: black;"></div>
<div class="gradient" style="width: 100px; height: 500px;"></div>
</div>
<div class="gradient" style="width: 100px; height: 500px;"></div>
</div>
<div class="gradient" style="width: 100px; height: 500px;"></div>
</div>
<div class="gradient" style="width: 100px; height: 500px;"></div>
</div>
<div class="gradient" style="width: 100px; height: 500px;"></div>
</div>
</div>
</div>
<script>
// The CSSOM-View spec and implementations follow different algorithms (scrolls performed in parallel, as inner-to-outer sequence or as outer-to-inner sequence).
// See https://github.com/w3c/csswg-drafts/issues/3127
promise_test(() => {
return new Promise(function(resolve, reject) {
var divs = document.querySelectorAll(".scrollable");
divs.forEach((scrollableDiv) => {
resetScroll(scrollableDiv);
});
elementToReveal.scrollIntoView({inline: "start", block: "start", behavior: "auto"});
var scrollTop = new Map();
var isSmooth = new Map();
divs.forEach((scrollableDiv) => {
scrollTop.set(scrollableDiv, scrollableDiv.scrollTop);
isSmooth.set(scrollableDiv, scrollableDiv.classList.contains("smoothBehavior"));
// If scroll operations are not performed in parallel, scroll boxes with instant behavior might also need to wait for their predecessors.
if (isSmooth.get(scrollableDiv))
assert_less_than(scrollTop.get(scrollableDiv), 500, "Element with smooth behavior should not scroll immediately");
});
observeScrolling(Array.from(divs), function(done) {
try {
divs.forEach((scrollableDiv) => {
assert_less_than_equal(scrollTop.get(scrollableDiv), scrollableDiv.scrollTop, "ScrollTop keeps increasing");
if (!isSmooth.get(scrollableDiv))
assert_any(assert_equals, scrollableDiv.scrollTop, [0, 500], "Element with instant behavior should jump to the final position");
if (done)
assert_equals(scrollableDiv.scrollTop, 500, "Final value of scrollTop");
scrollTop.set(scrollableDiv, scrollableDiv.scrollTop);
});
} catch(e) {
reject(e);
}
if (done)
resolve();
});
});
}, "scrollIntoView with nested elements with different scroll-behavior");
</script>

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<!DOCTYPE html>
<title>Testing scroll positions when scrolling an element with smooth 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;
scroll-behavior: smooth;
}
</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>
// For smooth behavior, evolution of scroll positions over time is not specified by CSSOM View.
// This test relies on the minimal assumption that scroll position functions are monotonic.
["scroll", "scrollTo", "scrollBy", "scrollIntoView"].forEach(function(scrollFunction) {
[{left:0, top:0}, {left:1000, top:0}, {left:0, top:500}, {left:1000, top:500}].forEach((initial) => {
var finalLeft = 500;
var finalTop = 250;
promise_test(() => {
return new Promise(function(resolve, reject) {
scrollNode(overflowNode, "scroll", "instant", initial.left, initial.top);
var oldLeft = overflowNode.scrollLeft;
var oldTop = overflowNode.scrollTop;
assert_equals(oldLeft, initial.left, "ScrollLeft should be at initial position");
assert_equals(oldTop, initial.top, "ScrollTop should be at initial position");
if (scrollFunction === "scrollBy")
scrollNode(overflowNode, scrollFunction, "smooth", finalLeft - initial.left, finalTop - initial.top);
else
scrollNode(overflowNode, scrollFunction, "smooth", finalLeft, finalTop);
observeScrolling(overflowNode, function(done) {
try {
var newLeft = overflowNode.scrollLeft;
var newTop = overflowNode.scrollTop;
assert_less_than_equal(Math.hypot(finalLeft - newLeft, finalTop - newTop), Math.hypot(finalLeft - oldLeft, finalTop - oldTop), "Scroll position should move towards the final position");
if (done) {
assert_equals(newLeft, finalLeft, "ScrollLeft should reach final position");
assert_equals(newTop, finalTop, "ScrollTop should reach final position");
}
oldLeft = newLeft;
oldTop = newTop;
} catch(e) {
reject(e);
}
if (done)
resolve();
});
});
}, `Scroll positions when performing smooth scrolling from (${initial.left}, ${initial.top}) to (${finalLeft}, ${finalTop}) using ${scrollFunction}() `);
});
});
promise_test(() => {
return new Promise(function(resolve, reject) {
resetScroll(overflowNode);
var initialScrollAborted = false;
var scrollDirectionChanged = false;
var oldLeft = overflowNode.scrollLeft;
var oldTop = overflowNode.scrollTop;
assert_equals(oldLeft, 0);
assert_equals(oldTop, 0);
scrollNode(overflowNode, "scroll", "smooth", 1500, 750);
observeScrolling(overflowNode, function(done) {
try {
var newLeft = overflowNode.scrollLeft;
var newTop = overflowNode.scrollTop;
if (initialScrollAborted) {
if (scrollDirectionChanged) {
assert_greater_than_equal(oldLeft, newLeft, "ScrollLeft keeps decreasing");
assert_greater_than_equal(oldTop, newTop, "ScrollTop keeps decreasing");
} else
scrollDirectionChanged = newLeft <= oldLeft && newTop <= oldTop;
} else {
assert_less_than_equal(oldLeft, newLeft, "ScrollLeft keeps increasing");
assert_less_than_equal(oldTop, newTop, "ScrollTop keeps increasing");
if (newLeft > 1000 && newTop > 500) {
// Abort the initial scroll.
initialScrollAborted = true;
scrollNode(overflowNode, "scroll", "smooth", 500, 250);
newLeft = overflowNode.scrollLeft;
newTop = overflowNode.scrollTop;
}
}
if (done) {
assert_equals(newLeft, 500, "ScrollLeft should reach final position");
assert_equals(newTop, 250, "ScrollTop should reach final position");
}
oldLeft = newLeft;
oldTop = newTop;
} catch(e) {
reject(e);
}
if (done)
resolve();
});
});
}, "Scroll positions when aborting a smooth scrolling with another smooth scrolling");
promise_test(() => {
return new Promise(function(resolve) {
resetScroll(overflowNode);
var initialScrollAborted = false;
var oldLeft = overflowNode.scrollLeft;
var oldTop = overflowNode.scrollTop;
assert_equals(oldLeft, 0);
assert_equals(oldTop, 0);
scrollNode(overflowNode, "scroll", "smooth", 1500, 750);
observeScrolling(overflowNode, function(done) {
try {
var newLeft = overflowNode.scrollLeft;
var newTop = overflowNode.scrollTop;
if (!initialScrollAborted) {
assert_less_than_equal(oldLeft, newLeft, "ScrollLeft keeps increasing");
assert_less_than_equal(oldTop, newTop, "ScrollTop keeps increasing");
if (newLeft > 1000 && newTop > 500) {
// Abort the initial scroll.
initialScrollAborted = true;
scrollNode(overflowNode, "scroll", "instant", 500, 250);
newLeft = overflowNode.scrollLeft;
newTop = overflowNode.scrollTop;
assert_equals(newLeft, 500, "ScrollLeft should reach final position");
assert_equals(newTop, 250, "ScrollTop should reach final position");
}
}
if (done) {
assert_equals(newLeft, 500, "ScrollLeft should stay at final position");
assert_equals(newTop, 250, "ScrollTop should stay at final position");
}
oldLeft = newLeft;
oldTop = newTop;
} catch(e) {
reject(e);
}
if (done)
resolve();
});
});
}, "Scroll positions when aborting a smooth scrolling with an instant scrolling");
</script>

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<!DOCTYPE html>
<title>Testing scrollOptions' behavior for Element.scroll* and scroll-behavior on the root of a subframe</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>
<div id="log">
</div>
<iframe id="iframeNode" width="400px" height="200px" srcdoc="<!DOCTYPE>
<html>
<style>
body {
margin: 0;
}
.autoBehavior {
scroll-behavior: auto;
}
.smoothBehavior {
scroll-behavior: smooth;
}
</style>
<body>
<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>
</body>
</html>">
</iframe>
<script>
var iframeLoadTest = async_test("iframe loaded");
var scrollingElement, styledElement, elementToReveal;
var elementToRevealLeft = 500;
var elementToRevealTop = 250;
iframeNode.addEventListener("load", iframeLoadTest.step_func_done(() => {
scrollingElement = iframeNode.contentDocument.scrollingElement;
styledElement = iframeNode.contentDocument.documentElement;
elementToReveal = iframeNode.contentDocument.getElementById("elementToReveal");
["scroll", "scrollTo", "scrollBy", "scrollIntoView"].forEach((scrollFunction) => {
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, null, 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(); });
}, `Subframe with auto scroll-behavior ; ${scrollFunction}() with default behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, "auto", 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(); });
}, `Subframe with auto scroll-behavior ; ${scrollFunction}() with auto behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, "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(); });
}, `Subframe with auto scroll-behavior ; ${scrollFunction}() with instant behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, "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");
});
}, `Subframe with auto scroll-behavior ; ${scrollFunction}() with smooth behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, null, 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");
});
}, `Subframe with smooth scroll-behavior ; ${scrollFunction}() with default behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, "auto", 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");
});
}, `Subframe with smooth scroll-behavior ; ${scrollFunction}() with auto behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, "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(); });
}, `Subframe with smooth scroll-behavior ; ${scrollFunction}() with instant behavior`);
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, scrollFunction, "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");
});
}, `Subframe with smooth scroll-behavior ; ${scrollFunction}() with smooth behavior`);
});
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, "scroll", "smooth", elementToRevealLeft, elementToRevealTop);
scrollNode(scrollingElement, "scroll", "smooth", elementToRevealLeft / 2, elementToRevealTop / 2);
return waitForScrollEnd(scrollingElement).then(() => {
assert_equals(scrollingElement.scrollLeft, elementToRevealLeft / 2, "Final value of scrollLeft");
assert_equals(scrollingElement.scrollTop, elementToRevealTop / 2, "Final value of scrollTop");
});
}, "Aborting an ongoing smooth scrolling on a subframe with another smooth scrolling");
promise_test(() => {
resetScroll(scrollingElement);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingElement.scrollLeft, 0);
assert_equals(scrollingElement.scrollTop, 0);
scrollNode(scrollingElement, "scroll", "smooth", elementToRevealLeft, elementToRevealTop);
scrollNode(scrollingElement, "scroll", "instant", 0, 0);
return waitForScrollEnd(scrollingElement).then(() => {
assert_equals(scrollingElement.scrollLeft, 0, "Final value of scrollLeft");
assert_equals(scrollingElement.scrollTop, 0, "Final value of scrollTop");
});
}, "Aborting an ongoing smooth scrolling on a subframe with an instant scrolling");
}));
</script>

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<!DOCTYPE html>
<title>Testing scrollOptions' behavior for Element.scroll* and scroll-behavior on the root of a subframe</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>
<div id="log">
</div>
<iframe id="iframeNode" width="400px" height="200px" srcdoc="<!DOCTYPE>
<html>
<style>
body {
margin: 0;
}
.autoBehavior {
scroll-behavior: auto;
}
.smoothBehavior {
scroll-behavior: smooth;
}
</style>
<body>
<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>
</body>
</html>">
</iframe>
<script>
var iframeLoadTest = async_test("iframe loaded");
var scrollingWindow, styledElement, elementToReveal;
var elementToRevealLeft = 500;
var elementToRevealTop = 250;
iframeNode.addEventListener("load", iframeLoadTest.step_func_done(() => {
scrollingWindow = iframeNode.contentWindow;
styledElement = iframeNode.contentDocument.documentElement;
elementToReveal = iframeNode.contentDocument.getElementById("elementToReveal");
["scroll", "scrollTo", "scrollBy"].forEach((scrollFunction) => {
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, scrollFunction, null, elementToRevealLeft, elementToRevealTop);
assert_equals(scrollingWindow.scrollX, elementToRevealLeft, "Should set scrollLeft immediately");
assert_equals(scrollingWindow.scrollY, elementToRevealTop, "Should set scrollTop immediately");
return new Promise((resolve) => { resolve(); });
}, `Main frame with auto scroll-behavior ; ${scrollFunction}() with default behavior`);
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, scrollFunction, "auto", elementToRevealLeft, elementToRevealTop);
assert_equals(scrollingWindow.scrollX, elementToRevealLeft, "Should set scrollLeft immediately");
assert_equals(scrollingWindow.scrollY, elementToRevealTop, "Should set scrollTop immediately");
return new Promise((resolve) => { resolve(); });
}, `Main frame with auto scroll-behavior ; ${scrollFunction}() with auto behavior`);
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, scrollFunction, "instant", elementToRevealLeft, elementToRevealTop);
assert_equals(scrollingWindow.scrollX, elementToRevealLeft, "Should set scrollLeft immediately");
assert_equals(scrollingWindow.scrollY, elementToRevealTop, "Should set scrollTop immediately");
return new Promise((resolve) => { resolve(); });
}, `Main frame with auto scroll-behavior ; ${scrollFunction}() with instant behavior`);
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "autoBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, scrollFunction, "smooth", elementToRevealLeft, elementToRevealTop);
assert_less_than(scrollingWindow.scrollX, elementToRevealLeft, "Should not set scrollLeft immediately");
assert_less_than(scrollingWindow.scrollY, elementToRevealTop, "Should not set scrollTop immediately");
return waitForScrollEnd(scrollingWindow.document.scrollingElement).then(() => {
assert_equals(scrollingWindow.scrollX, elementToRevealLeft, "Final value of scrollLeft");
assert_equals(scrollingWindow.scrollY, elementToRevealTop, "Final value of scrollTop");
});
}, `Main frame with auto scroll-behavior ; ${scrollFunction}() with smooth behavior`);
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, scrollFunction, null, elementToRevealLeft, elementToRevealTop);
assert_less_than(scrollingWindow.scrollX, elementToRevealLeft, "Should not set scrollLeft immediately");
assert_less_than(scrollingWindow.scrollY, elementToRevealTop, "Should not set scrollTop immediately");
return waitForScrollEnd(scrollingWindow.document.scrollingElement).then(() => {
assert_equals(scrollingWindow.scrollX, elementToRevealLeft, "Final value of scrollLeft");
assert_equals(scrollingWindow.scrollY, elementToRevealTop, "Final value of scrollTop");
});
}, `Main frame with smooth scroll-behavior ; ${scrollFunction}() with default behavior`);
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, scrollFunction, "auto", elementToRevealLeft, elementToRevealTop);
assert_less_than(scrollingWindow.scrollX, elementToRevealLeft, "Should not set scrollLeft immediately");
assert_less_than(scrollingWindow.scrollY, elementToRevealTop, "Should not set scrollTop immediately");
return waitForScrollEnd(scrollingWindow.document.scrollingElement).then(() => {
assert_equals(scrollingWindow.scrollX, elementToRevealLeft, "Final value of scrollLeft");
assert_equals(scrollingWindow.scrollY, elementToRevealTop, "Final value of scrollTop");
});
}, `Main frame with smooth scroll-behavior ; ${scrollFunction}() with auto behavior`);
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, scrollFunction, "instant", elementToRevealLeft, elementToRevealTop);
assert_equals(scrollingWindow.scrollX, elementToRevealLeft, "Should set scrollLeft immediately");
assert_equals(scrollingWindow.scrollY, elementToRevealTop, "Should set scrollTop immediately");
return new Promise((resolve) => { resolve(); });
}, `Main frame with smooth scroll-behavior ; ${scrollFunction}() with instant behavior`);
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, scrollFunction, "smooth", elementToRevealLeft, elementToRevealTop);
assert_less_than(scrollingWindow.scrollX, elementToRevealLeft, "Should not set scrollLeft immediately");
assert_less_than(scrollingWindow.scrollY, elementToRevealTop, "Should not set scrollTop immediately");
return waitForScrollEnd(scrollingWindow.document.scrollingElement).then(() => {
assert_equals(scrollingWindow.scrollX, elementToRevealLeft, "Final value of scrollLeft");
assert_equals(scrollingWindow.scrollY, elementToRevealTop, "Final value of scrollTop");
});
}, `Main frame with smooth scroll-behavior ; ${scrollFunction}() with smooth behavior`);
});
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, "scroll", "smooth", elementToRevealLeft, elementToRevealTop);
scrollWindow(scrollingWindow, "scroll", "smooth", elementToRevealLeft / 2, elementToRevealTop / 2);
return waitForScrollEnd(scrollingWindow.document.scrollingElement).then(() => {
assert_equals(scrollingWindow.scrollX, elementToRevealLeft / 2, "Final value of scrollLeft");
assert_equals(scrollingWindow.scrollY, elementToRevealTop / 2, "Final value of scrollTop");
});
}, "Aborting an ongoing smooth scrolling on the main frame with another smooth scrolling");
promise_test(() => {
resetScrollForWindow(scrollingWindow);
setScrollBehavior(styledElement, "smoothBehavior");
assert_equals(scrollingWindow.scrollX, 0);
assert_equals(scrollingWindow.scrollY, 0);
scrollWindow(scrollingWindow, "scroll", "smooth", elementToRevealLeft, elementToRevealTop);
scrollWindow(scrollingWindow, "scroll", "instant", 0, 0);
return waitForScrollEnd(scrollingWindow.document.scrollingElement).then(() => {
assert_equals(scrollingWindow.scrollX, 0, "Final value of scrollLeft");
assert_equals(scrollingWindow.scrollY, 0, "Final value of scrollTop");
});
}, "Aborting an ongoing smooth scrolling on the main frame with an instant scrolling");
}));
</script>

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@ -0,0 +1,87 @@
function observeScrolling(elements, callback) {
if (!Array.isArray(elements))
elements = [elements];
var lastChangedFrame = 0;
var lastLeft = new Map();
var lastTop = new Map();
elements.forEach((element) => {
lastLeft.set(element, element.scrollLeft);
lastTop.set(element, element.scrollTop);
});
function tick(frames) {
// We requestAnimationFrame either for 500 frames or until 20 frames with
// no change have been observed.
if (frames >= 500 || frames - lastChangedFrame > 20) {
callback(true);
} else {
var scrollHappened = elements.some((element) => {
return element.scrollLeft != lastLeft.get(element) || element.scrollTop != lastTop.get(element);
});
if (scrollHappened) {
lastChangedFrame = frames;
elements.forEach((element) => {
lastLeft.set(element, element.scrollLeft);
lastTop.set(element, element.scrollTop);
});
callback(false);
}
requestAnimationFrame(tick.bind(null, frames + 1));
}
}
tick(0);
}
function waitForScrollEnd(elements) {
return new Promise((resolve) => {
observeScrolling(elements, (done) => {
if (done)
resolve();
});
});
}
function resetScroll(scrollingElement) {
// Try various methods to ensure the element position is reset immediately.
scrollingElement.scrollLeft = 0;
scrollingElement.scrollTop = 0;
scrollingElement.scroll({left: 0, top: 0, behavior: "instant"});
}
function resetScrollForWindow(scrollingWindow) {
// Try various methods to ensure the element position is reset immediately.
scrollingWindow.document.scrollingElement.scrollLeft = 0;
scrollingWindow.document.scrollingElement.scrollTop = 0;
scrollingWindow.scroll({left: 0, top: 0, behavior: "instant"});
}
function setScrollBehavior(styledElement, className) {
styledElement.classList.remove("autoBehavior", "smoothBehavior");
styledElement.classList.add(className);
}
function scrollNode(scrollingElement, scrollFunction, behavior, elementToRevealLeft, elementToRevealTop) {
var args = {};
if (behavior)
args.behavior = behavior;
switch (scrollFunction) {
case "scrollIntoView":
args.inline = "start";
args.block = "start";
elementToReveal.scrollIntoView(args);
break;
default:
args.left = elementToRevealLeft;
args.top = elementToRevealTop;
scrollingElement[scrollFunction](args);
break;
}
}
function scrollWindow(scrollingWindow, scrollFunction, behavior, elementToRevealLeft, elementToRevealTop) {
var args = {};
if (behavior)
args.behavior = behavior;
args.left = elementToRevealLeft;
args.top = elementToRevealTop;
scrollingWindow[scrollFunction](args);
}