From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 21:33:14 +0200
Subject: Adding upstream version 115.7.0esr.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../snap-to-visible-areas-margin-x-axis.html       | 69 ++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 testing/web-platform/tests/css/css-scroll-snap/snap-to-visible-areas-margin-x-axis.html

(limited to 'testing/web-platform/tests/css/css-scroll-snap/snap-to-visible-areas-margin-x-axis.html')
diff --git a/testing/web-platform/tests/css/css-scroll-snap/snap-to-visible-areas-margin-x-axis.html b/testing/web-platform/tests/css/css-scroll-snap/snap-to-visible-areas-margin-x-axis.html
new file mode 100644
index 0000000000..dea9225a47
--- /dev/null
+++ b/testing/web-platform/tests/css/css-scroll-snap/snap-to-visible-areas-margin-x-axis.html
@@ -0,0 +1,69 @@
+<!DOCTYPE html>
+<title>
+  Snap to an area where the element's scroll-margin is visible but not the
+  element itself (using x-axis snap type)
+</title>
+<link rel="help" href="https://drafts.csswg.org/css-scroll-snap-1/#snap-scope"/>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+div {
+  position: absolute;
+  margin: 0px;
+}
+
+#scroller {
+  height: 600px;
+  width: 600px;
+  overflow: scroll;
+  scroll-snap-type: x mandatory;
+}
+
+#space {
+  width: 2000px;
+  height: 2000px;
+}
+
+.snap {
+  width: 200px;
+  height: 200px;
+  background-color: blue;
+  scroll-snap-align: start;
+}
+
+#left-visible {
+  left: 0px;
+  top: 0px;
+}
+
+#right-visible {
+  left: 800px;
+  top: 0px;
+}
+
+#middle-margin-visible {
+  left: 700px;
+  top: 800px;
+  /* 300px makes snap area visible with margin but non-visible without it */
+  scroll-margin-top: 300px;
+}
+
+</style>
+<div id="scroller">
+  <div id="space"></div>
+  <div id="left-visible" class="snap"></div>
+  <div id="middle-margin-visible" class="snap"></div>
+  <div id="right-visible" class="snap"></div>
+</div>
+<script>
+test(() => {
+  const scroller = document.getElementById("scroller");
+  scroller.scrollTo(0, 0);
+  assert_equals(scroller.scrollLeft, 0);
+  assert_equals(scroller.scrollTop, 0);
+  scroller.scrollTo(500, 0);
+  assert_equals(scroller.scrollLeft, 700);
+  assert_equals(scroller.scrollTop, 0);
+}, 'Scroll margin should be considered when calculating snap area visibilty \
+while snapping on the x-axis');
+</script>
-- 
cgit v1.2.3

