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>
---
 .../css/cssom-view/scrollIntoView-smooth.html      | 108 +++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 testing/web-platform/tests/css/cssom-view/scrollIntoView-smooth.html

(limited to 'testing/web-platform/tests/css/cssom-view/scrollIntoView-smooth.html')
diff --git a/testing/web-platform/tests/css/cssom-view/scrollIntoView-smooth.html b/testing/web-platform/tests/css/cssom-view/scrollIntoView-smooth.html
new file mode 100644
index 0000000000..ddfa31076c
--- /dev/null
+++ b/testing/web-platform/tests/css/cssom-view/scrollIntoView-smooth.html
@@ -0,0 +1,108 @@
+<!DOCTYPE HTML>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<title>Check End Position of smooth scrollIntoView</title>
+<div id="container" style="height: 2500px; width: 2500px;">
+  <div id="content" style="height: 500px; width: 500px;margin-left: 1000px; margin-right: 1000px; margin-top: 1000px;margin-bottom: 1000px;background-color: red">
+  </div>
+  <div id="shadow"></div>
+</div>
+<script>
+var content_height = 500;
+var content_width = 500;
+var window_height = document.documentElement.clientHeight;
+var window_width = document.documentElement.clientWidth;
+var content = document.getElementById("content");
+add_completion_callback(() => document.getElementById("container").remove());
+
+function waitForScrollEnd() {
+  var wait_for_scroll_start = performance.now();
+  var last_changed_timestamp = wait_for_scroll_start;
+  var last_changed_frame = 0;
+  var last_x = window.scrollX;
+  var last_y = window.scrollY;
+  return new Promise((resolve, reject) => {
+    function tick(frames, timestamp) {
+      // We requestAnimationFrame until at least 200ms have elapsed and at least
+      // 5 animation frames have run since the last change to the scroll
+      // offset, timing out after 8 seconds.
+      if (window.scrollX != last_x || window.scrollY != last_y) {
+        last_changed_timestamp = timestamp;
+        last_changed_frame = frames;
+        last_x = window.scrollX;
+        last_y = window.scrollY;
+      }
+      if (timestamp - last_changed_timestamp > 200 &&
+          frames - last_changed_frame > 4) {
+        resolve();
+      } else if (timestamp - wait_for_scroll_start > 8000) {
+        reject();
+      } else {
+        requestAnimationFrame(tick.bind(null, frames + 1));
+      }
+    }
+    tick(last_changed_frame, wait_for_scroll_start);
+  });
+}
+
+// When testing manually, we need an additional frame at beginning
+// to trigger the effect.
+requestAnimationFrame(() => {
+promise_test(t => {
+  window.scrollTo(0, 0);
+  var expected_x = content.offsetLeft + content_width - window_width;
+  var expected_y = content.offsetTop + content_height - window_height;
+  assert_not_equals(window.scrollX, expected_x, "scrollX");
+  assert_not_equals(window.scrollY, expected_y, "scrollY");
+  content.scrollIntoView({behavior: "smooth", block: "nearest", inline:
+"nearest"});
+  return waitForScrollEnd().then(() => {
+    assert_approx_equals(window.scrollX, expected_x, 1, "scrollX");
+    assert_approx_equals(window.scrollY, expected_y, 1, "scrollY");
+  });
+}, "Smooth scrollIntoView should scroll the element to the 'nearest' position");
+
+promise_test(t => {
+  window.scrollTo(0, 0);
+  var expected_x = content.offsetLeft;
+  var expected_y = content.offsetTop;
+  assert_not_equals(window.scrollX, expected_x, "scrollX");
+  assert_not_equals(window.scrollY, expected_y, "scrollY");
+  content.scrollIntoView({behavior: "smooth", block: "start", inline:
+"start"});
+  return waitForScrollEnd().then(() => {
+    assert_approx_equals(window.scrollX, expected_x, 1, "scrollX");
+    assert_approx_equals(window.scrollY, expected_y, 1, "scrollY");
+  });
+}, "Smooth scrollIntoView should scroll the element to the 'start' position");
+
+promise_test(t => {
+  window.scrollTo(0, 0);
+  var expected_x = content.offsetLeft + (content_width - window_width) / 2;
+  var expected_y = content.offsetTop + (content_height - window_height) / 2;
+  assert_not_equals(window.scrollX, expected_x, "scrollX");
+  assert_not_equals(window.scrollY, expected_y, "scrollY");
+  content.scrollIntoView({behavior: "smooth", block: "center", inline:
+"center"});
+  return waitForScrollEnd().then(() => {
+    assert_approx_equals(window.scrollX, expected_x, 1, "scrollX");
+    assert_approx_equals(window.scrollY, expected_y, 1, "scrollY");
+  });
+}, "Smooth scrollIntoView should scroll the element to the 'center' position");
+
+promise_test(t => {
+  window.scrollTo(0, 0);
+  var expected_x = content.offsetLeft + content_width - window_width;
+  var expected_y = content.offsetTop + content_height - window_height;
+  assert_not_equals(window.scrollX, expected_x, "scrollX");
+  assert_not_equals(window.scrollY, expected_y, "scrollY");
+  content.scrollIntoView({behavior: "smooth", block: "end", inline:
+"end"});
+  return waitForScrollEnd().then(() => {
+    assert_approx_equals(window.scrollX, expected_x, 1, "scrollX");
+    assert_approx_equals(window.scrollY, expected_y, 1, "scrollY");
+  });
+}, "Smooth scrollIntoView should scroll the element to the 'end' position");
+
+});
+</script>
-- 
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