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diff --git a/testing/web-platform/tests/css/css-scroll-snap/snap-after-relayout/move-current-target.html b/testing/web-platform/tests/css/css-scroll-snap/snap-after-relayout/move-current-target.html
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+++ b/testing/web-platform/tests/css/css-scroll-snap/snap-after-relayout/move-current-target.html
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+<!DOCTYPE html>
+<title>
+ Moving the current snap target should make the scroller resnap to it.
+</title>
+<link rel="help" href="https://drafts.csswg.org/css-scroll-snap/#re-snap" />
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+div {
+ position: relative;
+ margin: 0;
+}
+
+#block {
+ height: 100px;
+ width: 100px;
+}
+
+#scroller {
+ height: 500px;
+ width: 500px;
+ overflow: hidden;
+ scroll-snap-type: both mandatory;
+}
+
+#initial-target {
+ width: 300px;
+ height: 300px;
+ left: 100px;
+ top: 0;
+ transform: none;
+ background-color: green;
+ scroll-snap-align: start;
+}
+
+#other-target {
+ width: 300px;
+ height: 300px;
+ left: 300px;
+ background-color: red;
+ scroll-snap-align: start;
+}
+
+.area {
+ width: 2000px;
+ height: 2000px;
+}
+</style>
+
+<div id="scroller">
+ <div id="block"></div>
+ <div id="initial-target"></div>
+ <div id="other-target"></div>
+ <div class="area"></div>
+</div>
+
+<script>
+const initial_target = document.getElementById("initial-target");
+const other_target = document.getElementById("other-target");
+const block = document.getElementById("block");
+const scroller = document.getElementById("scroller");
+
+function cleanup() {
+ initial_target.style.setProperty("transform", "none");
+ initial_target.style.setProperty("top", "0");
+ block.style.setProperty("height", "100px");
+}
+
+test(t => {
+ t.add_cleanup(cleanup);
+ scroller.scrollTo(0,0);
+ assert_equals(scroller.scrollTop, 100);
+ assert_equals(scroller.scrollLeft, 100);
+
+ initial_target.style.setProperty("top", "300px");
+ assert_equals(scroller.scrollTop, 400);
+ assert_equals(scroller.scrollLeft, 100);
+}, "Moving the current snap target should make the scroller resnap to it.");
+
+test(t => {
+ t.add_cleanup(cleanup);
+ scroller.scrollTo(0,0);
+ assert_equals(scroller.scrollTop, 100);
+ assert_equals(scroller.scrollLeft, 100);
+
+ block.style.setProperty("height", "200px");
+ assert_equals(scroller.scrollTop, 200);
+ assert_equals(scroller.scrollLeft, 100);
+}, "Changing the layout of other elements should be able to cause resnapping to \
+the target.");
+
+test(t => {
+ t.add_cleanup(cleanup);
+ scroller.scrollTo(0,0);
+ assert_equals(scroller.scrollTop, 100);
+ assert_equals(scroller.scrollLeft, 100);
+
+ initial_target.style.setProperty("transform", "translate(0,100px)");
+ assert_equals(scroller.scrollTop, 200);
+ assert_equals(scroller.scrollLeft, 100);
+}, "Transforming the current snap target should make the scroller resnap to it.");
+
+test(t => {
+ t.add_cleanup(cleanup);
+ initial_target.style.setProperty("top", "100px");
+ scroller.scrollTo(0,0);
+ assert_equals(scroller.scrollTop, 200);
+ assert_equals(scroller.scrollLeft, 100);
+
+ initial_target.style.setProperty("transform", "translate(0,100px)");
+ initial_target.style.setProperty("top", "0");
+ assert_equals(scroller.scrollTop, 200);
+ assert_equals(scroller.scrollLeft, 100);
+}, "Applying two property changes that do not change the visual offset of the \
+target should not change the scroll offset.");
+</script>